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# 2.6 第一个接口调试
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:::tip 概述
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本章通过实际操作,带您完成第一个 API 接口的调试,从登录获取 Token 到调用业务接口。
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:::
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## 调试工具
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推荐使用以下工具进行 API 调试:
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- **ApiFox**:图形化 API 调试工具(https://apifox.com/)
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- **curl**:命令行工具(系统自带)
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- **浏览器开发者工具**:F12 → Network 面板
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## 步骤一:获取验证码
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```bash
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# GET 请求获取验证码(返回 Base64 编码的图片 + 验证码 key)
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curl http://localhost:8000/api/captcha
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```
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响应示例:
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```json
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{
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"code": 0,
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"ok": true,
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"msg": "操作成功",
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"data": {
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"key": "a1b2c3d4e5f6...",
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"image": "data:image/png;base64,iVBOR..."
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}
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}
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```
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将 `key` 保存备用,`image` 是 Base64 编码的验证码图片。
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## 步骤二:登录获取 Token
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```bash
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# -----------------------------------------------------------------------------
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# 登录接口(POST + JSON)
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# -----------------------------------------------------------------------------
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# -X POST → 使用 POST 方法
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# -H "Content-Type: ..." → 告诉服务器请求体是 JSON 格式
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# -d '{...}' → 发送 JSON 请求体
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# username → 用户名
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# password → 密码
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# captchaKey → 步骤一返回的验证码 key
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# captchaCode → 验证码图片上显示的字符
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curl -X POST http://localhost:8000/api/login \
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-H "Content-Type: application/json" \
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-d '{
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"username": "admin",
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"password": "123456",
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"captchaKey": "a1b2c3d4e5f6...",
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"captchaCode": "1234"
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}'
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```
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响应示例:
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```json
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{
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"code": 0,
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"ok": true,
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"msg": "登录成功",
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"data": {
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"access_token": "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9...",
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"refresh_token": "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9...",
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"token_type": "Bearer",
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"expires_in": 7200,
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"user": {
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"id": 1,
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"username": "admin",
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"realname": "管理员",
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"avatar": ""
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}
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}
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}
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```
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将 `access_token` 保存备用。
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## 步骤三:调用业务接口
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使用 Token 调用需要认证的接口:
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```bash
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# -----------------------------------------------------------------------------
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# 获取用户分页列表(GET + Authorization 头)
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# -----------------------------------------------------------------------------
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# pageNo=1\&pageSize=10 → 分页参数(\& 是 bash 转义,防止 & 被解释为后台运行符)
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# -H "Authorization: Bearer <token>" → 在请求头中携带 JWT Token
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curl http://localhost:8000/api/user/page?pageNo=1\&pageSize=10 \
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-H "Authorization: Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9..."
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```
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响应示例:
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```json
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{
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"code": 0,
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"ok": true,
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"msg": "操作成功",
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"data": {
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"records": [
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{
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"id": 1,
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"username": "admin",
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"realname": "管理员",
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"status": 1,
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"statusText": "启用",
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"createTime": "2026-01-01 00:00:00"
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}
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],
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"total": 1,
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"size": 10,
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"current": 1,
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"pages": 1
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}
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}
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```
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## 步骤四:测试其他接口
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```bash
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# -----------------------------------------------------------------------------
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# 获取当前登录用户信息
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# -----------------------------------------------------------------------------
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curl http://localhost:8000/api/index/getUser \
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-H "Authorization: Bearer <your_token>"
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# -----------------------------------------------------------------------------
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# 获取当前用户的菜单列表(用于前端动态路由)
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# -----------------------------------------------------------------------------
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curl http://localhost:8000/api/index/getMenus \
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-H "Authorization: Bearer <your_token>"
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# -----------------------------------------------------------------------------
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# 获取字典项(gender = 性别字典的编码)
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# -----------------------------------------------------------------------------
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curl http://localhost:8000/api/dict/item/getDictItemList/gender \
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-H "Authorization: Bearer <your_token>"
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# -----------------------------------------------------------------------------
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# 刷新 Token(access_token 过期后,用 refresh_token 换取新的)
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# -----------------------------------------------------------------------------
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curl -X POST http://localhost:8000/api/oauth2/token \
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-H "Content-Type: application/json" \
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-d '{"grant_type": "refresh_token", "refresh_token": "<your_refresh_token>"}'
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```
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## 错误响应示例
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### 401 未授权(Token 缺失或无效)
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```json
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{
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"code": 401,
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"ok": false,
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"msg": "未提供认证令牌",
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"data": null
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}
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```
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### 403 禁止访问(权限不足)
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```json
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{
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"code": 403,
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"ok": false,
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"msg": "无访问权限:用户列表",
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"data": null
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}
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```
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### 422 参数验证失败
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```json
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{
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"code": 1,
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"ok": false,
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"msg": "参数验证失败",
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"data": {
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"username": "用户名不能为空"
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}
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}
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```
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## ApiFox 配置建议
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1. 创建环境,设置变量:
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- `base_url` = `http://localhost:8000`
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- `token` = 登录后填入 access_token
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2. 在请求头中使用变量:
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- `Authorization` = `Bearer {{token}}`
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3. 登录请求的「后置操作」中添加脚本自动保存 Token:
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```javascript
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// 解析响应 JSON
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var response = pm.response.json();
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// 登录成功时自动将 access_token 保存到环境变量
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if (response.code === 0) {
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pm.environment.set("token", response.data.access_token);
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}
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```
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