基于瀑布模型的LLM Agent设计

瀑布模型？！

瀑布模型是一种经典的软件开发模型，因其流程像瀑布一样逐级下落而得名。它将软件开发过程划分为一系列固定顺序的阶段，每个阶段都有明确的输入输出，并且需要在上一个阶段完成后才能开始下一个阶段。

瀑布模型的典型阶段包括：

1. 需求分析: 全面了解用户需求，确定软件功能、性能等方面的具体要求，并形成详细的需求规格说明书。
2. 系统设计: 根据需求规格说明书，设计软件系统的架构、模块、接口和数据结构等，并形成系统设计文档。
3. 编码实现: 将系统设计转换为可执行的代码，并进行单元测试，确保每个模块的功能正常。
4. 测试: 对已完成的软件进行集成测试、系统测试和验收测试，发现并修复软件缺陷，确保软件质量符合要求。
5. 部署: 将测试通过的软件部署到实际运行环境中，并进行用户培训。
6. 维护: 对已上线的软件进行持续的维护和更新，修复bug，改进功能，提高用户体验。

瀑布模型的优点:

• 流程清晰易懂: 每个阶段都有明确的目标和产出，易于理解和管理，适合新手团队或大型项目。
• 文档规范完整: 每个阶段都需要输出详细的文档，便于团队成员之间的沟通和协作，也方便后期的维护和升级。
• 早期缺陷发现: 在需求分析和设计阶段就进行严格的评审，可以尽早发现和解决问题，降低后期修改成本。

为什么是瀑布模型？

瀑布模型和 LLM Agent 在运作流程和理念上存在一些有趣的相似性：

1. 线性流程与阶段性

• 瀑布模型 以线性方式运作，将软件开发过程分解为一系列按顺序执行的阶段。
• LLM Agent 在解决问题或完成任务时，也遵循着一定的步骤，例如：接收指令、理解指令、规划步骤、执行步骤、输出结果。

2. 明确的需求与目标

• 瀑布模型 强调在项目初期进行详细的需求分析，明确软件功能和目标。
• LLM Agent 需要清晰的指令或目标，才能理解用户的意图并有效地执行任务。 模糊或不明确的指令会导致 Agent 产生错误的理解和输出。

3. 文档和记录的重要性

• 瀑布模型 注重文档记录，每个阶段都需要产出详细的文档，例如需求规格说明书、系统设计文档等。
• LLM Agent 的训练和评估也依赖于大量的文本数据和记录。 训练数据质量越高，Agent 的性能就越好。 同时，记录 Agent 的交互历史可以帮助开发者分析其行为、改进算法和优化性能。

瀑布模型常见分工

在遵循瀑布模型的软件开发过程中，通常涉及以下主要角色和分工：
1. 项目经理 (Project Manager):

• 职责:
  • 规划、组织和管理整个软件开发项目。
  • 制定项目计划，包括时间进度、资源分配、风险管理等。
  • 领导和协调团队成员，确保项目按计划执行。
  • 与客户沟通，获取需求并汇报项目进展。
• 参与阶段: 所有阶段

2. 产品经理/业务分析师 (Product Manager/Business Analyst):

• 职责:
  • 深入了解用户需求，并将需求转化为详细的需求规格说明书。
  • 负责与客户沟通，明确需求细节，并解答疑问。
  • 参与需求评审，确保需求文档的准确性和完整性。
• 参与阶段: 需求分析与定义

3. 系统架构师 (System Architect):

• 职责:
  • 根据需求规格说明书，设计软件系统的整体架构。
  • 确定系统模块划分、接口定义、数据结构等。
  • 选择合适的技术方案，并进行技术评估。
  • 指导开发团队进行系统设计和编码工作。
• 参与阶段: 系统设计

4. 软件开发工程师 (Software Developer/Programmer):

• 职责:
  • 根据系统设计文档，编写程序代码实现系统功能。
  • 进行单元测试，确保代码质量。
  • 修复测试过程中发现的缺陷。
  • 参与代码评审，提高代码质量。
• 参与阶段: 程序编码

5. 测试工程师 (Test Engineer/QA Engineer):

• 职责:
  • 制定测试计划和测试用例，进行软件测试。
  • 执行测试用例，发现并报告软件缺陷。
  • 跟踪缺陷修复情况，确保软件质量。
  • 参与需求评审和设计评审，尽早发现潜在问题。
• 参与阶段: 软件测试

6. 运维工程师 (Operations Engineer/DevOps Engineer):

• 职责:
  • 负责软件的部署、维护和监控。
  • 确保软件在生产环境的稳定运行。
  • 处理生产环境出现的故障和问题。
  • 参与软件部署方案的制定和实施。
• 参与阶段: 软件部署, 软件维护

7. 客户 (Customer/Stakeholder):

• 职责:
  • 提出软件需求，并与开发团队沟通需求细节。
  • 参与需求评审，确认需求文档的准确性。
  • 参与软件测试，验收软件功能。
• 参与阶段: 需求分析与定义, 软件测试

LLM Agent 模仿瀑布模型开发任务的设计方案

为了更好地模拟瀑布模型的开发流程，利用 LLM Agent 的能力，将其分别扮演不同的角色，并按照瀑布模型的阶段划分任务。以下是一个详细的设计方案：
阶段一：需求分析与定义

1. 角色： 用户, LLM Agent (扮演业务分析师)
2. 输入： 用户提供开发任务的概述，例如：
   • “我需要一个可以分析用户评论情感的工具。”
   • “我希望构建一个可以自动生成代码文档的程序。”
3. LLM Agent 行为：
   • 主动与用户沟通，详细询问需求细节，例如目标用户、功能需求、性能需求、数据格式等。
   • 根据用户的描述，生成详细的需求规格说明书，并与您确认。
4. 输出： 一份完整的需求规格说明书，包含以下内容：
   • 任务目标
   • 功能需求
   • 性能需求
   • 数据格式
   • 评估指标

阶段二：系统设计

1. 角色： LLM Agent (扮演系统架构师)
2. 输入： 需求规格说明书
3. LLM Agent 行为：
   • 根据需求规格说明书，设计 LLM Agent 的架构，包括：
     • Prompt 模板设计
     • 数据处理流程
     • 评估指标的计算方法
   • 生成系统设计文档，并解释设计思路。
4. 输出： 一份系统设计文档，至少包含以下内容：
   • Prompt 模板设计
   • 数据处理流程
   • 评估指标计算方法

阶段三：程序编码

1. 角色： LLM Agent (扮演软件开发工程师)
2. 输入： 系统设计文档
3. LLM Agent 行为：
   • 根据系统设计文档，编写代码实现 LLM Agent 的功能，包括：
     • 调用 LLM 模型 API
     • 实现 Prompt 模板
     • 编写数据处理代码
     • 实现评估指标计算代码
4. 输出： LLM Agent 的代码实现

阶段四：软件测试

1. 角色： LLM Agent (扮演测试工程师)，用户
2. 输入： LLM Agent 代码实现, 测试数据集
3. LLM Agent 行为：
   • 根据需求规格说明书，自动生成测试用例，并对 LLM Agent 进行测试。
   • 生成测试报告，包括测试结果、评估指标得分等。
4. 用户行为：
   • 您可以根据实际需求，对 LLM Agent 进行人工测试，并提供反馈。
5. 输出： 测试报告，包含以下内容：
   • 测试用例
   • 测试结果
   • 评估指标得分
   • 用户反馈

阶段五：软件部署

1. 角色： 用户
2. 输入： 测试通过的 LLM Agent 代码
3. 用户行为：
   • 您可以选择将 LLM Agent 部署到合适的环境中，例如：
     • 本地机器
     • 云服务器
     • API 服务
4. 输出： 可运行的 LLM Agent

阶段六：软件维护

1. 角色： 用户
2. 行为：
   • 根据实际使用情况，对 LLM Agent 进行维护，例如：
     • 更新训练数据
     • 优化 Prompt 模板
     • 改进代码实现
   • 收集用户反馈，持续改进 LLM Agent 的性能。

简化的验证实现方案

阶段一：需求分析与定义

• 角色： 用户, LLM Agent (扮演需求分析师)
• System Prompt:

1

你是一位专业的需求分析师，你的目标是根据用户输入的的需求，不要向用户提问，你能且仅能生成一份完整的需求规格说明书。

• User Prompt:

1

提出问题

阶段二：系统设计

• 角色： LLM Agent (扮演系统架构师)
• System Prompt:

1

你是一位经验丰富的系统架构师，负责根据需求规格说明书设计软件架构并生成一份系统设计文档​。请解释你的设计思路，并说明选择特定方案的原因。

• User Prompt:

1
2
3
4
5

用户期望：
{{用户}}
产品经理根据用户期望形成了需求规格说明书，请仔细阅读需求规格说明书，结合用户期望生成系统设计文档​。解释设计思路，说明选择特定方案的原因。
需求规格说明书：
{{需求书}}

阶段三：程序编码

• 角色： LLM Agent (扮演软件开发工程师)
• System Prompt:

1

你是一位专业的软件开发工程师，负责根据系统设计文档编写代码。使用英文进行回复。

• User Prompt:

1
2
3
4
5

架构师根据用户期望形成了系统设计文档，请仔细阅读系统设计文档，结合用户期望编写代码实现，确保代码的质量和可读性。
用户期望：
{{用户}}
系统设计文档：
{{架构设计}}

阶段四：软件测试

• 角色： LLM Agent (扮演测试工程师)
• System Prompt:

1
2
3
4

你是一位专业的测试工程师，负责根据需求规格说明书设计测试用例。
请仔细阅读以下需求规格说明书：
[插入需求规格说明书]
请设计全面的测试用例，以覆盖需求的所有功能和性能需求。

• User Prompt:

1
2
3
4
5
6
7

产品经理根据用户期望形成了需求规格说明书，程序员撰写了代码实现，请仔细阅读需求规格说明书，结合用户期望生成进行测试。
用户期望：
{{用户}}
需求规格说明书：
{{需求书}}
待测试代码：
{{待测试代码}}

对比测试

瀑布模型Agent

最终输出

User

Help me implement a front-end interface for a website for temporary file sharing over a LAN.

AI

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74

// Using React for demonstration purposes. 
// Adapt to Vue.js or other frameworks as needed.
import React, { useState } from 'react';
import axios from 'axios'; // Or your preferred HTTP client
function App() {
  const [selectedFile, setSelectedFile] = useState(null);
  const [uploadProgress, setUploadProgress] = useState(0);
  const [downloadLink, setDownloadLink] = useState('');
  const [expirationTime, setExpirationTime] = useState(3600); // Default: 1 hour
  const handleFileChange = (event) => {
    setSelectedFile(event.target.files[0]);
  };
  const handleUpload = async () => {
    const formData = new FormData();
    formData.append('file', selectedFile);
    formData.append('expirationTime', expirationTime);
    try {
      const response = await axios.post('/api/upload', formData, {
        onUploadProgress: (progressEvent) => {
          const percentCompleted = Math.round(
            (progressEvent.loaded * 100) / progressEvent.total
          );
          setUploadProgress(percentCompleted);
        },
      });
      setDownloadLink(response.data.downloadLink);
    } catch (error) {
      console.error('Upload failed:', error);
      // Handle upload errors appropriately (e.g., display error message)
    }
  };
  const handleExpirationChange = (event) => {
    setExpirationTime(parseInt(event.target.value, 10));
  };
  return (
    <div className="container">
      <h1>LAN File Sharing</h1>
      {/* File Upload Section */}
      <div className="upload-section">
        <h2>Upload File</h2>
        <input type="file" onChange={handleFileChange} />
        <button onClick={handleUpload} disabled={!selectedFile}>
          Upload
        </button>
        {/* Progress Bar */}
        {uploadProgress > 0 && (
          <div className="progress-bar">
            <div
              className="progress-bar-fill"
              style={{ width: `${uploadProgress}%` }}
            ></div>
          </div>
        )}
      </div>
      {/* File Sharing Section */}
      {downloadLink && (
        <div className="sharing-section">
          <h2>Share File</h2>
          <p>Download Link: {downloadLink}</p>
          {/* Expiration Time Selection */}
          <label htmlFor="expiration">Expiration Time (seconds):</label>
          <input
            type="number"
            id="expiration"
            min="60" // Minimum 1 minute
            value={expirationTime}
            onChange={handleExpirationChange}
          />
        </div>
      )}
    </div>
  );
}
export default App;

Explanation:

1. Import Statements: Imports necessary modules like React, useState hook, and Axios for HTTP requests.
2. State Management: Uses useState hooks to manage component state:
   • selectedFile: Stores the selected file for upload.
   • uploadProgress: Tracks the progress of the file upload.
   • downloadLink: Stores the generated download link after successful upload.
   • expirationTime: Stores the selected expiration time for the shared file.
3. File Selection: The handleFileChange function updates the selectedFile state when a user selects a file.
4. File Upload: The handleUpload function handles the file upload logic:
   • Creates a FormData object to send the file and expiration time to the backend.
   • Makes a POST request to the /api/upload endpoint (replace with your actual backend endpoint).
   • Updates the uploadProgress state based on the upload progress event.
   • Sets the downloadLink state with the link received from the backend upon successful upload.
5. Expiration Time Handling: The handleExpirationChange function updates the expirationTime state when the user changes the expiration time input.
6. UI Rendering:
   • Renders a file upload section with a file input, upload button, and progress bar.
   • Conditionally renders a file sharing section with the download link and expiration time controls once the upload is complete.
     Key Points:

• Backend Integration: This code assumes you have a backend service set up to handle file uploads, storage, and download link generation. You’ll need to replace /api/upload with your actual backend endpoint.
• Error Handling: Basic error handling is included in the handleUpload function. Implement more robust error handling and user feedback mechanisms as needed.
• Security: This code provides a basic implementation and does not include security measures like authentication, authorization, or input validation. Implement appropriate security measures in both your frontend and backend to protect against vulnerabilities.
• Styling: The code uses minimal inline styling for demonstration purposes. Apply your preferred CSS framework or custom styles for a polished look and feel.
  This code provides a solid starting point for building the frontend of your temporary file sharing website. Remember to adapt it to your specific requirements, integrate it with your backend, and implement appropriate security and error handling measures.
  Test Plan for Temporary File Sharing Website Frontend
  This test plan outlines the test cases to be executed to ensure the frontend of the temporary file sharing website meets the requirements outlined in the specification document.
  1. Test Environment:
• Browser Compatibility: Chrome (latest), Firefox (latest), Edge (latest)
• Device Compatibility: Desktop, Tablet, Mobile (responsive design testing)
• Network: Local Area Network (LAN)
  2. Test Data:
• File Types:
  • Documents: .doc, .docx, .pdf, .txt
  • Images: .jpg, .png, .gif
  • Videos: .mp4, .avi
  • Compressed Files: .zip, .rar
• File Sizes:
  • Small (KB)
  • Medium (MB)
  • Large (GB) - Consider limitations based on LAN speed and backend configuration.
• Expiration Times:
  • 1 hour
  • 1 day
  • 1 week
  • No expiration (test warning message)
    3. Test Cases:
    3.1 File Upload Functionality:

• Test Report documenting the test results, including any defects found and their severity.
  5. Test Schedule:
• To be determined based on project timelines and resource availability.
  6. Entry and Exit Criteria:
• Entry Criteria:
  • Frontend codebase ready for testing.
  • Test environment set up.
  • Test data prepared.
• Exit Criteria:
  • All test cases executed.
  • All critical and high-severity defects fixed and verified.
  • Test report finalized.

产品经理输出

User

Help me implement a front-end interface for a website for temporary file sharing over a LAN.

AI

Temporary File Sharing Website - Frontend Requirements Specification
1. Introduction
This document outlines the functional and non-functional requirements for the front-end interface of a website designed for temporary file sharing over a Local Area Network (LAN).
2. Target Audience
This document is intended for use by the development team responsible for building the front-end interface of the website.
3. Scope
This document covers the user interface and user experience aspects of the website. It does not cover the back-end infrastructure, database design, or security implementation details.
4. Functional Requirements
4.1 File Upload

• 4.1.1 The user should be able to select one or multiple files from their local machine for upload.
• 4.1.2 Supported file types should include, but not be limited to: documents (.doc, .docx, .pdf, .txt), images (.jpg, .png, .gif), videos (.mp4, .avi), and compressed files (.zip, .rar).
• 4.1.3 The user should be able to view the upload progress of each file.
• 4.1.4 The system should provide an estimated time remaining for the upload process.
• 4.1.5 Upon successful upload, a unique download link should be generated for each file.
  4.2 File Sharing
• 4.2.1 The generated download link should be easily copyable to the clipboard.
• 4.2.2 The user should be able to set an optional expiration time for the shared file (e.g., 1 hour, 1 day, 1 week).
• 4.2.3 The system should display a clear warning message if the user attempts to share a file without setting an expiration time.
  4.3 File Download
• 4.3.1 Any user on the same LAN should be able to download the shared file by accessing the unique download link.
• 4.3.2 The download page should display the file name, size, and expiration time (if set).
• 4.3.3 The user should be able to download the file directly by clicking on the download button.
  4.4 User Interface
• 4.4.1 The website should have a clean, intuitive, and user-friendly interface.
• 4.4.2 The design should be responsive and adapt to different screen sizes (desktop, tablet, mobile).
• 4.4.3 The website should use clear and concise language throughout.

5. Non-Functional Requirements
5.1 Performance

• 5.1.1 The website should load quickly and respond to user actions promptly.
• 5.1.2 File uploads and downloads should be efficient and utilize the available bandwidth effectively.
  5.2 Security
• 5.2.1 All file transfers should occur within the LAN and not be exposed to the public internet.
• 5.2.2 Shared files should be inaccessible after their expiration time.
  5.3 Usability
• 5.3.1 The website should be easy to use for users with varying levels of technical expertise.
• 5.3.2 The user interface should provide clear instructions and feedback to the user.
  6. Future Considerations
• 6.1 Implement user authentication to track shared files and download history.
• 6.2 Integrate with cloud storage services for extended file storage options.
• 6.3 Develop a desktop application for easier file sharing.
  7. Glossary
• LAN: Local Area Network
• UI: User Interface
• UX: User Experience
  8. Appendix
  (This section can include wireframes, mockups, or other visual representations of the user interface.)

架构师输出

User

User expectation:

1

Help me implement a front-end interface for a website for temporary file sharing over a LAN. 

The product manager has formed a requirement specification based on user expectations. Please carefully read the requirement specification and generate a system design document based on user expectations. Explain the design ideas and explain the reasons for choosing specific solutions.
Requirement Specification Document

1

## Temporary File Sharing Website - Frontend Requirements Specification **1. Introduction** This document outlines the functional and non-functional requirements for the front-end interface of a website designed for temporary file sharing over a Local Area Network (LAN). **2. Target Audience** This document is intended for use by the development team responsible for building the front-end interface of the website. **3. Scope** This document covers the user interface and user experience aspects of the website. It does not cover the back-end infrastructure, database design, or security implementation details. **4. Functional Requirements** **4.1 File Upload** * **4.1.1** The user should be able to select one or multiple files from their local machine for upload. * **4.1.2** Supported file types should include, but not be limited to: documents (.doc, .docx, .pdf, .txt), images (.jpg, .png, .gif), videos (.mp4, .avi), and compressed files (.zip, .rar). * **4.1.3** The user should be able to view the upload progress of each file. * **4.1.4** The system should provide an estimated time remaining for the upload process. * **4.1.5** Upon successful upload, a unique download link should be generated for each file. **4.2 File Sharing** * **4.2.1** The generated download link should be easily copyable to the clipboard. * **4.2.2** The user should be able to set an optional expiration time for the shared file (e.g., 1 hour, 1 day, 1 week). * **4.2.3** The system should display a clear warning message if the user attempts to share a file without setting an expiration time. **4.3 File Download** * **4.3.1** Any user on the same LAN should be able to download the shared file by accessing the unique download link. * **4.3.2** The download page should display the file name, size, and expiration time (if set). * **4.3.3** The user should be able to download the file directly by clicking on the download button. **4.4 User Interface** * **4.4.1** The website should have a clean, intuitive, and user-friendly interface. * **4.4.2** The design should be responsive and adapt to different screen sizes (desktop, tablet, mobile). * **4.4.3** The website should use clear and concise language throughout. **5. Non-Functional Requirements** **5.1 Performance** * **5.1.1** The website should load quickly and respond to user actions promptly. * **5.1.2** File uploads and downloads should be efficient and utilize the available bandwidth effectively. **5.2 Security** * **5.2.1** All file transfers should occur within the LAN and not be exposed to the public internet. * **5.2.2** Shared files should be inaccessible after their expiration time. **5.3 Usability** * **5.3.1** The website should be easy to use for users with varying levels of technical expertise. * **5.3.2** The user interface should provide clear instructions and feedback to the user. **6. Future Considerations** * **6.1** Implement user authentication to track shared files and download history. * **6.2** Integrate with cloud storage services for extended file storage options. * **6.3** Develop a desktop application for easier file sharing. **7. Glossary** * **LAN:** Local Area Network * **UI:** User Interface * **UX:** User Experience **8. Appendix** (This section can include wireframes, mockups, or other visual representations of the user interface.) 

AI

System Design Document - Temporary File Sharing Website (Frontend)
1. Introduction
This document outlines the system design for the front-end of a web application facilitating temporary file sharing within a LAN. The design prioritizes usability, performance, and security while adhering to the provided requirements specification.
2. Architectural Overview
The frontend will be a single-page application (SPA) built using a modern JavaScript framework like React or Vue.js. This choice allows for a dynamic and responsive user experience.
3. Components and Functionality
3.1 File Upload Component

• Technology: HTML5 File API for handling file selection and upload progress tracking.
• Functionality:
  • Drag-and-drop file selection or traditional file picker dialog.
  • Display selected file(s) with name, size, and type.
  • Real-time upload progress bar with estimated time remaining.
  • Upon successful upload:
    • Generate and display a unique, time-limited download link.
    • Option to copy the link to the clipboard.
      3.2 File Sharing Component
• Technology: JavaScript for handling link generation and clipboard functionality.
• Functionality:
  • Display the generated download link prominently.
  • Option to set an expiration time for the shared file using a dropdown or calendar interface.
  • Clear warning message if attempting to share without setting an expiration time.
    3.3 File Download Component
• Technology: Standard HTML anchor tags for download links.
• Functionality:
  • Display file information (name, size, expiration time).
  • Clear call to action for downloading the file.
    3.4 User Interface
• Technology: HTML, CSS, and a JavaScript framework (React or Vue.js).
• Design Considerations:
  • Clean, modern, and intuitive design.
  • Responsive layout adapting to different screen sizes.
  • Clear and concise language.
  • Accessibility considerations (e.g., ARIA attributes).
    4. Technology Stack
• Frontend Framework: React or Vue.js
• Language: JavaScript (or TypeScript for enhanced type safety)
• Styling: CSS framework like Bootstrap or Materialize for responsiveness and pre-built components.
• Build Tools: Webpack or Parcel for bundling and optimization.
  5. Communication and Data Flow
• The frontend will communicate with a backend service (not detailed in this document) for file handling and storage.
• Communication will be primarily through RESTful APIs using JSON for data exchange.
• WebSockets could be considered for real-time updates during file uploads and downloads.
  6. Security Considerations
• Frontend:
  • Input validation to prevent XSS vulnerabilities.
  • Secure handling of download links (e.g., JWT for temporary access).
• Backend (out of scope for this document):
  • Restrict file access to the LAN.
  • Implement proper authentication and authorization if user accounts are introduced in the future.
    7. Performance Considerations
• Optimize asset loading (minification, caching).
• Utilize CDNs for libraries and frameworks.
• Implement lazy loading for images or large files.
• Efficiently handle large file uploads and downloads.
  8. Future Considerations
• User Authentication: Implement user accounts to track shared files and download history.
• Cloud Storage Integration: Allow users to connect to cloud storage services for extended storage options.
• Desktop Application: Develop a desktop application for a more integrated file sharing experience.
  9. Conclusion
  This document has outlined a robust and scalable frontend design for a temporary file sharing website. The chosen technologies and architecture prioritize usability, performance, and security, ensuring a positive user experience. Future iterations can build upon this foundation to incorporate additional features and functionalities.

软件工程师输出

User

User expectation:

1

Help me implement a front-end interface for a website for temporary file sharing over a LAN. 

The architect has formed the system design document based on user expectations. Please read the system design document carefully and write code implementation in conjunction with user expectations. Ensure the quality and readability of the code.

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60

## System Design Document - Temporary File Sharing Website (Frontend)
**1. Introduction**
This document outlines the system design for the front-end of a web application facilitating temporary file sharing within a LAN. The design prioritizes usability, performance, and security while adhering to the provided requirements specification.
**2. Architectural Overview**
The frontend will be a single-page application (SPA) built using a modern JavaScript framework like React or Vue.js. This choice allows for a dynamic and responsive user experience. 
**3. Components and Functionality**
**3.1 File Upload Component**
*   **Technology:** HTML5 File API for handling file selection and upload progress tracking.
*   **Functionality:**
    *   Drag-and-drop file selection or traditional file picker dialog.
    *   Display selected file(s) with name, size, and type.
    *   Real-time upload progress bar with estimated time remaining.
    *   Upon successful upload:
        *   Generate and display a unique, time-limited download link.
        *   Option to copy the link to the clipboard.
**3.2 File Sharing Component**
*   **Technology:** JavaScript for handling link generation and clipboard functionality.
*   **Functionality:**
    *   Display the generated download link prominently.
    *   Option to set an expiration time for the shared file using a dropdown or calendar interface.
    *   Clear warning message if attempting to share without setting an expiration time.
**3.3 File Download Component**
*   **Technology:** Standard HTML anchor tags for download links.
*   **Functionality:**
    *   Display file information (name, size, expiration time).
    *   Clear call to action for downloading the file.
**3.4 User Interface**
*   **Technology:** HTML, CSS, and a JavaScript framework (React or Vue.js).
*   **Design Considerations:**
    *   Clean, modern, and intuitive design.
    *   Responsive layout adapting to different screen sizes.
    *   Clear and concise language.
    *   Accessibility considerations (e.g., ARIA attributes).
**4. Technology Stack**
*   **Frontend Framework:** React or Vue.js
*   **Language:** JavaScript (or TypeScript for enhanced type safety)
*   **Styling:** CSS framework like Bootstrap or Materialize for responsiveness and pre-built components.
*   **Build Tools:** Webpack or Parcel for bundling and optimization.
**5. Communication and Data Flow**
*   The frontend will communicate with a backend service (not detailed in this document) for file handling and storage.
*   Communication will be primarily through RESTful APIs using JSON for data exchange.
*   WebSockets could be considered for real-time updates during file uploads and downloads.
**6. Security Considerations**
*   **Frontend:**
    *   Input validation to prevent XSS vulnerabilities.
    *   Secure handling of download links (e.g., JWT for temporary access).
*   **Backend (out of scope for this document):**
    *   Restrict file access to the LAN.
    *   Implement proper authentication and authorization if user accounts are introduced in the future.
**7. Performance Considerations**
*   Optimize asset loading (minification, caching).
*   Utilize CDNs for libraries and frameworks.
*   Implement lazy loading for images or large files.
*   Efficiently handle large file uploads and downloads.
**8. Future Considerations**
*   **User Authentication:** Implement user accounts to track shared files and download history.
*   **Cloud Storage Integration:** Allow users to connect to cloud storage services for extended storage options.
*   **Desktop Application:** Develop a desktop application for a more integrated file sharing experience.
**9. Conclusion**
This document has outlined a robust and scalable frontend design for a temporary file sharing website. The chosen technologies and architecture prioritize usability, performance, and security, ensuring a positive user experience. Future iterations can build upon this foundation to incorporate additional features and functionalities. 

AI

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74

// Using React for demonstration purposes. 
// Adapt to Vue.js or other frameworks as needed.
import React, { useState } from 'react';
import axios from 'axios'; // Or your preferred HTTP client
function App() {
  const [selectedFile, setSelectedFile] = useState(null);
  const [uploadProgress, setUploadProgress] = useState(0);
  const [downloadLink, setDownloadLink] = useState('');
  const [expirationTime, setExpirationTime] = useState(3600); // Default: 1 hour
  const handleFileChange = (event) => {
    setSelectedFile(event.target.files[0]);
  };
  const handleUpload = async () => {
    const formData = new FormData();
    formData.append('file', selectedFile);
    formData.append('expirationTime', expirationTime);
    try {
      const response = await axios.post('/api/upload', formData, {
        onUploadProgress: (progressEvent) => {
          const percentCompleted = Math.round(
            (progressEvent.loaded * 100) / progressEvent.total
          );
          setUploadProgress(percentCompleted);
        },
      });
      setDownloadLink(response.data.downloadLink);
    } catch (error) {
      console.error('Upload failed:', error);
      // Handle upload errors appropriately (e.g., display error message)
    }
  };
  const handleExpirationChange = (event) => {
    setExpirationTime(parseInt(event.target.value, 10));
  };
  return (
    <div className="container">
      <h1>LAN File Sharing</h1>
      {/* File Upload Section */}
      <div className="upload-section">
        <h2>Upload File</h2>
        <input type="file" onChange={handleFileChange} />
        <button onClick={handleUpload} disabled={!selectedFile}>
          Upload
        </button>
        {/* Progress Bar */}
        {uploadProgress > 0 && (
          <div className="progress-bar">
            <div
              className="progress-bar-fill"
              style={{ width: `${uploadProgress}%` }}
            ></div>
          </div>
        )}
      </div>
      {/* File Sharing Section */}
      {downloadLink && (
        <div className="sharing-section">
          <h2>Share File</h2>
          <p>Download Link: {downloadLink}</p>
          {/* Expiration Time Selection */}
          <label htmlFor="expiration">Expiration Time (seconds):</label>
          <input
            type="number"
            id="expiration"
            min="60" // Minimum 1 minute
            value={expirationTime}
            onChange={handleExpirationChange}
          />
        </div>
      )}
    </div>
  );
}
export default App;

Explanation:

1. Import Statements: Imports necessary modules like React, useState hook, and Axios for HTTP requests.
2. State Management: Uses useState hooks to manage component state:
   • selectedFile: Stores the selected file for upload.
   • uploadProgress: Tracks the progress of the file upload.
   • downloadLink: Stores the generated download link after successful upload.
   • expirationTime: Stores the selected expiration time for the shared file.
3. File Selection: The handleFileChange function updates the selectedFile state when a user selects a file.
4. File Upload: The handleUpload function handles the file upload logic:
   • Creates a FormData object to send the file and expiration time to the backend.
   • Makes a POST request to the /api/upload endpoint (replace with your actual backend endpoint).
   • Updates the uploadProgress state based on the upload progress event.
   • Sets the downloadLink state with the link received from the backend upon successful upload.
5. Expiration Time Handling: The handleExpirationChange function updates the expirationTime state when the user changes the expiration time input.
6. UI Rendering:
   • Renders a file upload section with a file input, upload button, and progress bar.
   • Conditionally renders a file sharing section with the download link and expiration time controls once the upload is complete.
     Key Points:

• Backend Integration: This code assumes you have a backend service set up to handle file uploads, storage, and download link generation. You’ll need to replace /api/upload with your actual backend endpoint.
• Error Handling: Basic error handling is included in the handleUpload function. Implement more robust error handling and user feedback mechanisms as needed.
• Security: This code provides a basic implementation and does not include security measures like authentication, authorization, or input validation. Implement appropriate security measures in both your frontend and backend to protect against vulnerabilities.
• Styling: The code uses minimal inline styling for demonstration purposes. Apply your preferred CSS framework or custom styles for a polished look and feel.
  This code provides a solid starting point for building the frontend of your temporary file sharing website. Remember to adapt it to your specific requirements, integrate it with your backend, and implement appropriate security and error handling measures.

测试工程师输出

User

Please translate: The product manager has formed the requirement specification based on user expectations, and the programmer has written the code implementation. Please read the requirement specification carefully and generate tests based on user expectations.
User expectation:

1

Help me implement a front-end interface for a website for temporary file sharing over a LAN. 

Requirement Specification Document ：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46

## Temporary File Sharing Website - Frontend Requirements Specification
**1. Introduction**
This document outlines the functional and non-functional requirements for the front-end interface of a website designed for temporary file sharing over a Local Area Network (LAN). 
**2. Target Audience**
This document is intended for use by the development team responsible for building the front-end interface of the website.
**3. Scope**
This document covers the user interface and user experience aspects of the website. It does not cover the back-end infrastructure, database design, or security implementation details.
**4. Functional Requirements**
**4.1 File Upload**
* **4.1.1** The user should be able to select one or multiple files from their local machine for upload.
* **4.1.2** Supported file types should include, but not be limited to: documents (.doc, .docx, .pdf, .txt), images (.jpg, .png, .gif), videos (.mp4, .avi), and compressed files (.zip, .rar).
* **4.1.3** The user should be able to view the upload progress of each file.
* **4.1.4** The system should provide an estimated time remaining for the upload process.
* **4.1.5** Upon successful upload, a unique download link should be generated for each file.
**4.2 File Sharing**
* **4.2.1** The generated download link should be easily copyable to the clipboard.
* **4.2.2** The user should be able to set an optional expiration time for the shared file (e.g., 1 hour, 1 day, 1 week).
* **4.2.3** The system should display a clear warning message if the user attempts to share a file without setting an expiration time.
**4.3 File Download**
* **4.3.1** Any user on the same LAN should be able to download the shared file by accessing the unique download link.
* **4.3.2** The download page should display the file name, size, and expiration time (if set).
* **4.3.3** The user should be able to download the file directly by clicking on the download button.
**4.4 User Interface**
* **4.4.1** The website should have a clean, intuitive, and user-friendly interface.
* **4.4.2** The design should be responsive and adapt to different screen sizes (desktop, tablet, mobile).
* **4.4.3** The website should use clear and concise language throughout.
**5. Non-Functional Requirements**
**5.1 Performance**
* **5.1.1** The website should load quickly and respond to user actions promptly.
* **5.1.2** File uploads and downloads should be efficient and utilize the available bandwidth effectively.
**5.2 Security**
* **5.2.1** All file transfers should occur within the LAN and not be exposed to the public internet.
* **5.2.2** Shared files should be inaccessible after their expiration time.
**5.3 Usability**
* **5.3.1** The website should be easy to use for users with varying levels of technical expertise.
* **5.3.2** The user interface should provide clear instructions and feedback to the user.
**6. Future Considerations**
* **6.1** Implement user authentication to track shared files and download history.
* **6.2** Integrate with cloud storage services for extended file storage options.
* **6.3** Develop a desktop application for easier file sharing.
**7. Glossary**
* **LAN:** Local Area Network
* **UI:** User Interface
* **UX:** User Experience
**8. Appendix**
(This section can include wireframes, mockups, or other visual representations of the user interface.) 

Code to be tested:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98

```javascript
// Using React for demonstration purposes. 
// Adapt to Vue.js or other frameworks as needed.
import React, { useState } from 'react';
import axios from 'axios'; // Or your preferred HTTP client
function App() {
  const [selectedFile, setSelectedFile] = useState(null);
  const [uploadProgress, setUploadProgress] = useState(0);
  const [downloadLink, setDownloadLink] = useState('');
  const [expirationTime, setExpirationTime] = useState(3600); // Default: 1 hour
  const handleFileChange = (event) => {
    setSelectedFile(event.target.files[0]);
  };
  const handleUpload = async () => {
    const formData = new FormData();
    formData.append('file', selectedFile);
    formData.append('expirationTime', expirationTime);
    try {
      const response = await axios.post('/api/upload', formData, {
        onUploadProgress: (progressEvent) => {
          const percentCompleted = Math.round(
            (progressEvent.loaded * 100) / progressEvent.total
          );
          setUploadProgress(percentCompleted);
        },
      });
      setDownloadLink(response.data.downloadLink);
    } catch (error) {
      console.error('Upload failed:', error);
      // Handle upload errors appropriately (e.g., display error message)
    }
  };
  const handleExpirationChange = (event) => {
    setExpirationTime(parseInt(event.target.value, 10));
  };
  return (
    <div className="container">
      <h1>LAN File Sharing</h1>
      {/* File Upload Section */}
      <div className="upload-section">
        <h2>Upload File</h2>
        <input type="file" onChange={handleFileChange} />
        <button onClick={handleUpload} disabled={!selectedFile}>
          Upload
        </button>
        {/* Progress Bar */}
        {uploadProgress > 0 && (
          <div className="progress-bar">
            <div
              className="progress-bar-fill"
              style={{ width: `${uploadProgress}%` }}
            ></div>
          </div>
        )}
      </div>
      {/* File Sharing Section */}
      {downloadLink && (
        <div className="sharing-section">
          <h2>Share File</h2>
          <p>Download Link: {downloadLink}</p>
          {/* Expiration Time Selection */}
          <label htmlFor="expiration">Expiration Time (seconds):</label>
          <input
            type="number"
            id="expiration"
            min="60" // Minimum 1 minute
            value={expirationTime}
            onChange={handleExpirationChange}
          />
        </div>
      )}
    </div>
  );
}
export default App;
**Explanation:**
1. **Import Statements:** Imports necessary modules like React, useState hook, and Axios for HTTP requests.
2. **State Management:** Uses `useState` hooks to manage component state:
   - `selectedFile`: Stores the selected file for upload.
   - `uploadProgress`: Tracks the progress of the file upload.
   - `downloadLink`: Stores the generated download link after successful upload.
   - `expirationTime`: Stores the selected expiration time for the shared file.
3. **File Selection:** The `handleFileChange` function updates the `selectedFile` state when a user selects a file.
4. **File Upload:** The `handleUpload` function handles the file upload logic:
   - Creates a `FormData` object to send the file and expiration time to the backend.
   - Makes a POST request to the `/api/upload` endpoint (replace with your actual backend endpoint).
   - Updates the `uploadProgress` state based on the upload progress event.
   - Sets the `downloadLink` state with the link received from the backend upon successful upload.
5. **Expiration Time Handling:** The `handleExpirationChange` function updates the `expirationTime` state when the user changes the expiration time input.
6. **UI Rendering:**
   - Renders a file upload section with a file input, upload button, and progress bar.
   - Conditionally renders a file sharing section with the download link and expiration time controls once the upload is complete.
**Key Points:**
- **Backend Integration:** This code assumes you have a backend service set up to handle file uploads, storage, and download link generation. You'll need to replace `/api/upload` with your actual backend endpoint.
- **Error Handling:** Basic error handling is included in the `handleUpload` function. Implement more robust error handling and user feedback mechanisms as needed.
- **Security:** This code provides a basic implementation and does not include security measures like authentication, authorization, or input validation. Implement appropriate security measures in both your frontend and backend to protect against vulnerabilities.
- **Styling:** The code uses minimal inline styling for demonstration purposes. Apply your preferred CSS framework or custom styles for a polished look and feel.
This code provides a solid starting point for building the frontend of your temporary file sharing website. Remember to adapt it to your specific requirements, integrate it with your backend, and implement appropriate security and error handling measures. 

AI

Test Plan for Temporary File Sharing Website Frontend
This test plan outlines the test cases to be executed to ensure the frontend of the temporary file sharing website meets the requirements outlined in the specification document.
1. Test Environment:

• Browser Compatibility: Chrome (latest), Firefox (latest), Edge (latest)
• Device Compatibility: Desktop, Tablet, Mobile (responsive design testing)
• Network: Local Area Network (LAN)
  2. Test Data:
• File Types:
  • Documents: .doc, .docx, .pdf, .txt
  • Images: .jpg, .png, .gif
  • Videos: .mp4, .avi
  • Compressed Files: .zip, .rar
• File Sizes:
  • Small (KB)
  • Medium (MB)
  • Large (GB) - Consider limitations based on LAN speed and backend configuration.
• Expiration Times:
  • 1 hour
  • 1 day
  • 1 week
  • No expiration (test warning message)
    3. Test Cases:
    3.1 File Upload Functionality:

3.2 File Sharing Functionality:

• Test Report documenting the test results, including any defects found and their severity.
  5. Test Schedule:
• To be determined based on project timelines and resource availability.
  6. Entry and Exit Criteria:
• Entry Criteria:
  • Frontend codebase ready for testing.
  • Test environment set up.
  • Test data prepared.
• Exit Criteria:
  • All test cases executed.
  • All critical and high-severity defects fixed and verified.
  • Test report finalized.

LLM直接回复

直接输出

User

Help me implement a front-end interface for a website for temporary file sharing over a LAN.

AI

Okay, I can help you outline the front-end implementation for a LAN file-sharing website. Here’s a breakdown of the structure, technologies, and considerations:
I. Technologies

• HTML, CSS, JavaScript: The core web technologies for structure, styling, and interactivity.
• WebRTC (Peer-to-Peer Communication): Enables direct browser-to-browser communication within the LAN, eliminating the need for a central server to handle file transfers.
• WebSocket (Optional): Can be used for signaling and establishing the initial WebRTC connection between peers.
  II. Front-End Structure (Simplified)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

<!DOCTYPE html>
<html>
<head>
  <title>LAN File Share</title>
  <link rel="stylesheet" href="style.css">
</head>
<body>
  <div id="file-drop-area">
    <h2>Drag and Drop Files Here</h2>
    <input type="file" id="file-input" multiple>
  </div>
  <div id="peer-list">
    <h3>Connected Devices:</h3>
    <ul>
      </ul>
  </div>
  <script src="script.js"></script>
</body>
</html>

III. JavaScript Functionality (script.js)

1. File Selection and Handling:
   • Listen for “drag and drop” events or file selections using the <input type="file"> element.
   • Use the File API to access file data (name, size, type, blob).
2. Peer Discovery and Connection (WebRTC):
   • Signaling Server (Optional):
     • Use a simple WebSocket server (e.g., Node.js with ws or socket.io) to handle peer discovery within the LAN.
     • Peers connect to the signaling server and exchange connection information (IP addresses, port numbers).
   • Peer-to-Peer Connection:
     • Use the RTCPeerConnection API to establish a direct connection between peers.
     • Exchange ICE candidates (network path information) to find the best route for data transfer.
3. File Transfer (WebRTC Data Channels):
   • Create a reliable RTCDataChannel between connected peers.
   • Chunk the file data into smaller pieces for efficient transfer.
   • Send file chunks over the data channel.
   • Implement error handling and retransmission logic for reliable transfer.
4. Progress Display and User Interface:
   • Display a list of connected peers.
   • Show file transfer progress (upload/download).
   • Provide feedback messages (success, errors).
     IV. Code Example (Conceptual)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

// ... (File handling and UI logic) ...
// WebRTC setup (simplified)
const peerConnection = new RTCPeerConnection();
// Handle ICE candidate exchange
peerConnection.onicecandidate = (event) => {
  if (event.candidate) {
    // Send candidate to the signaling server
  }
};
// Create data channel
const dataChannel = peerConnection.createDataChannel('fileTransfer');
// Handle data channel events (open, close, message)
dataChannel.onopen = () => {
  // Start sending file chunks
};
dataChannel.onmessage = (event) => {
  // Receive and assemble file chunks
};
// ... (File chunking and transfer logic) ...

V. Additional Considerations

• Security: Implement security measures to prevent unauthorized access and file sharing within the LAN. Consider using HTTPS for the website and encrypting data during transfer.
• File Size Limits: Handle large file transfers efficiently and set appropriate limits to prevent network congestion.
• Browser Compatibility: Test your implementation across different browsers and devices on your LAN.
• User Experience: Design a user-friendly interface with clear instructions and progress indicators.
  VI. Alternatives to WebRTC
• Local Web Server: Set up a simple web server on one device and allow others to download files through a web interface.
• File Sharing Protocols (SMB, FTP): Use JavaScript libraries to interact with these protocols, but this might require browser extensions or specific browser configurations.
  Remember: This is a simplified outline. Building a robust LAN file-sharing application involves handling various edge cases, network conditions, and security considerations.

许可协议

本文采用 署名-非商业性使用-相同方式共享 4.0 国际 许可协议，转载请注明出处。

分享文章