return axios.delete(`/address/${id}`);解释代码

这是一个使用 axios 库发送 HTTP DELETE 请求来删除指定 id 的地址的代码。其中，`/address/${id}` 是请求的 URL，`axios.delete()` 是发送 DELETE 请求的方法。

相关问题

使用springboot+mybatis-plus+vue+element-ui技术编写高校教师评价管理系统的前后端分离代码

很高兴能为您提供这方面的帮助，以下是基本的代码结构和技术选型：

## 后端代码结构

├── src
│   ├── main
│   │   ├── java
│   │   │   ├── com
│   │   │   │   ├── example
│   │   │   │   │   ├── config
│   │   │   │   │   │   ├── MybatisPlusConfig.java
│   │   │   │   │   │   ├── WebMvcConfig.java
│   │   │   │   │   ├── controller
│   │   │   │   │   │   ├── TeacherController.java
│   │   │   │   │   ├── dao
│   │   │   │   │   │   ├── TeacherDao.java
│   │   │   │   │   ├── entity
│   │   │   │   │   │   ├── Teacher.java
│   │   │   │   │   ├── service
│   │   │   │   │   │   ├── TeacherService.java
│   │   │   │   │   │   ├── impl
│   │   │   │   │   │   │   ├── TeacherServiceImpl.java
│   │   │   │   │   ├── Application.java
│   │   │   │   ├── common
│   │   │   │   │   ├── Result.java
│   │   │   │   ├── interceptor
│   │   │   │   │   ├── LoginInterceptor.java
│   │   │   │   ├── mapper
│   │   │   │   │   ├── TeacherMapper.java
│   │   │   │   ├── utils
│   │   │   │   │   ├── JwtUtils.java
│   │   ├── resources
│   │   │   ├── application.yml
│   │   │   ├── mapper
│   │   │   │   ├── TeacherMapper.xml
│   │   ├── static
│   │   ├── templates

## 技术选型

- 后端技术栈：Spring Boot、Mybatis-Plus、JWT、MySQL
- 前端技术栈：Vue、Element UI、Axios

## 后端代码实现

### 配置文件

在 `application.yml` 中配置数据库和 JWT 相关信息。

server:
  port: 8080

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/teacher_evaluation?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=Asia/Shanghai
    username: root
    password: 123456
    driver-class-name: com.mysql.cj.jdbc.Driver

mybatis-plus:
  mapper-locations: classpath:mapper/*.xml
  type-aliases-package: com.example.entity
  configuration:
    map-underscore-to-camel-case: true

jwt:
  secret: secret
  expire: 3600

### 实体类

@Data
public class Teacher {

    private Integer id;
    private String name;
    private Integer age;
    private String sex;
    private String phone;
    private String email;
    private String address;
    private Integer departmentId;
    private Integer status;

}

### Mapper 接口

public interface TeacherMapper extends BaseMapper<Teacher> {

}

### DAO 层

public interface TeacherDao {

    Teacher selectById(Integer id);

    List<Teacher> selectList();

    int insert(Teacher teacher);

    int update(Teacher teacher);

    int delete(Integer id);

}

### Service 层

public interface TeacherService {

    Teacher selectById(Integer id);

    List<Teacher> selectList();

    boolean save(Teacher teacher);

    boolean update(Teacher teacher);

    boolean delete(Integer id);

}

### Service 实现类

@Service
public class TeacherServiceImpl implements TeacherService {

    @Autowired
    private TeacherDao teacherDao;

    @Override
    public Teacher selectById(Integer id) {
        return teacherDao.selectById(id);
    }

    @Override
    public List<Teacher> selectList() {
        return teacherDao.selectList();
    }

    @Override
    public boolean save(Teacher teacher) {
        return teacherDao.insert(teacher) > 0;
    }

    @Override
    public boolean update(Teacher teacher) {
        return teacherDao.update(teacher) > 0;
    }

    @Override
    public boolean delete(Integer id) {
        return teacherDao.delete(id) > 0;
    }
}

### Controller 层

@RestController
@RequestMapping("/teacher")
public class TeacherController {

    @Autowired
    private TeacherService teacherService;

    @GetMapping("/list")
    public Result list() {
        List<Teacher> list = teacherService.selectList();
        return Result.success(list);
    }

    @PostMapping("/save")
    public Result save(@RequestBody Teacher teacher) {
        boolean result = teacherService.save(teacher);
        return result ? Result.success() : Result.fail("添加失败");
    }

    @PostMapping("/update")
    public Result update(@RequestBody Teacher teacher) {
        boolean result = teacherService.update(teacher);
        return result ? Result.success() : Result.fail("更新失败");
    }

    @PostMapping("/delete")
    public Result delete(@RequestParam Integer id) {
        boolean result = teacherService.delete(id);
        return result ? Result.success() : Result.fail("删除失败");
    }

}

### JWT 鉴权

@Component
public class LoginInterceptor implements HandlerInterceptor {

    @Autowired
    private JwtUtils jwtUtils;

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String token = request.getHeader("Authorization");
        if (token == null || !token.startsWith("Bearer ")) {
            throw new RuntimeException("无效的token");
        }
        token = token.replace("Bearer ", "");
        if (!jwtUtils.validateToken(token)) {
            throw new RuntimeException("无效的token");
        }
        return true;
    }
}

## 前端代码实现

### Axios 请求封装

import axios from 'axios'
import { Message } from 'element-ui'

let instance = axios.create({
  baseURL: '/api',
  timeout: 5000,
  headers: {
    'Content-Type': 'application/json;charset=UTF-8'
  }
})

instance.interceptors.request.use(config => {
  let token = localStorage.getItem('token')
  if (token) {
    config.headers.Authorization = `Bearer ${token}`
  }
  return config
}, error => {
  return Promise.reject(error)
})

instance.interceptors.response.use(response => {
  if (response.status === 200) {
    return response.data
  } else {
    Message.error('请求错误')
  }
}, error => {
  if (error.response.status === 401) {
    Message.error('登录过期')
    localStorage.removeItem('token')
    window.location.href = '/login'
  } else if (error.response.status === 403) {
    Message.error('权限不足')
  } else if (error.response.status === 500) {
    Message.error('服务器错误')
  } else {
    Message.error('请求错误')
  }
  return Promise.reject(error)
})

export default instance

### Vue 页面

<template>
  <div>
    <el-row>
      <el-col :span="24"><h2>教师列表</h2></el-col>
    </el-row>
    <el-row>
      <el-col :span="24"><el-button type="primary" @click="add">添加教师</el-button></el-col>
    </el-row>
    <el-row>
      <el-col :span="24">
        <el-table :data="tableData" style="width: 100%">
          <el-table-column prop="id" label="ID"></el-table-column>
          <el-table-column prop="name" label="姓名"></el-table-column>
          <el-table-column prop="age" label="年龄"></el-table-column>
          <el-table-column prop="sex" label="性别"></el-table-column>
          <el-table-column prop="phone" label="电话"></el-table-column>
          <el-table-column prop="email" label="邮箱"></el-table-column>
          <el-table-column prop="address" label="地址"></el-table-column>
          <el-table-column prop="departmentId" label="部门"></el-table-column>
          <el-table-column prop="status" label="状态"></el-table-column>
          <el-table-column label="操作">
            <template slot-scope="scope">
              <el-button type="primary" size="mini" @click="edit(scope.row)">编辑</el-button>
              <el-button type="danger" size="mini" @click="remove(scope.row)">删除</el-button>
            </template>
          </el-table-column>
        </el-table>
      </el-col>
    </el-row>
    <el-dialog title="添加教师" :visible.sync="addDialogVisible">
      <el-form :model="addForm" :rules="addRules" ref="addForm">
        <el-form-item label="姓名" prop="name">
          <el-input v-model="addForm.name"></el-input>
        </el-form-item>
        <el-form-item label="年龄" prop="age">
          <el-input v-model="addForm.age"></el-input>
        </el-form-item>
        <el-form-item label="性别" prop="sex">
          <el-radio-group v-model="addForm.sex">
            <el-radio label="男"></el-radio>
            <el-radio label="女"></el-radio>
          </el-radio-group>
        </el-form-item>
        <el-form-item label="电话" prop="phone">
          <el-input v-model="addForm.phone"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="地址" prop="address">
          <el-input v-model="addForm.address"></el-input>
        </el-form-item>
        <el-form-item label="部门" prop="departmentId">
          <el-select v-model="addForm.departmentId">
            <el-option v-for="item in departmentList" :key="item.value" :label="item.label" :value="item.value"></el-option>
          </el-select>
        </el-form-item>
      </el-form>
      <div slot="footer">
        <el-button @click="addDialogVisible = false">取消</el-button>
        <el-button type="primary" @click="addFormSubmit">添加</el-button>
      </div>
    </el-dialog>
    <el-dialog title="编辑教师" :visible.sync="editDialogVisible">
      <el-form :model="editForm" :rules="editRules" ref="editForm">
        <el-form-item label="ID" prop="id">
          <el-input v-model="editForm.id" disabled></el-input>
        </el-form-item>
        <el-form-item label="姓名" prop="name">
          <el-input v-model="editForm.name"></el-input>
        </el-form-item>
        <el-form-item label="年龄" prop="age">
          <el-input v-model="editForm.age"></el-input>
        </el-form-item>
        <el-form-item label="性别" prop="sex">
          <el-radio-group v-model="editForm.sex">
            <el-radio label="男"></el-radio>
            <el-radio label="女"></el-radio>
          </el-radio-group>
        </el-form-item>
        <el-form-item label="电话" prop="phone">
          <el-input v-model="editForm.phone"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="地址" prop="address">
          <el-input v-model="editForm.address"></el-input>
        </el-form-item>
        <el-form-item label="部门" prop="departmentId">
          <el-select v-model="editForm.departmentId">
            <el-option v-for="item in departmentList" :key="item.value" :label="item.label" :value="item.value"></el-option>
          </el-select>
        </el-form-item>
      </el-form>
      <div slot="footer">
        <el-button @click="editDialogVisible = false">取消</el-button>
        <el-button type="primary" @click="editFormSubmit">保存</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import api from '@/utils/api'

export default {
  name: 'TeacherList',
  data() {
    return {
      tableData: [],
      addDialogVisible: false,
      addForm: {
        name: '',
        age: '',
        sex: '男',
        phone: '',
        email: '',
        address: '',
        departmentId: ''
      },
      addRules: {
        name: [
          { required: true, message: '请输入姓名', trigger: 'blur' },
          { min: 2, max: 20, message: '长度在 2 到 20 个字符', trigger: 'blur' }
        ],
        age: [
          { required: true, message: '请输入年龄', trigger: 'blur' },
          { type: 'number', message: '年龄必须为数字', trigger: 'blur' }
        ],
        sex: [
          { required: true, message: '请选择性别', trigger: 'change' }
        ],
        phone: [
          { required: true, message: '请输入电话', trigger: 'blur' },
          { pattern: /^1[3456789]\d{9}$/, message: '手机号码格式不正确', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { type: 'email', message: '邮箱格式不正确', trigger: 'blur' }
        ],
        address: [
          { required: true, message: '请输入地址', trigger: 'blur' }
        ],
        departmentId: [
          { required: true, message: '请选择所属部门', trigger: 'change' }
        ]
      },
      editDialogVisible: false,
      editForm: {
        id: '',
        name: '',
        age: '',
        sex: '男',
        phone: '',
        email: '',
        address: '',
        departmentId: ''
      },
      editRules: {
        name: [
          { required: true, message: '请输入姓名', trigger: 'blur' },
          { min: 2, max: 20, message: '长度在 2 到 20 个字符', trigger: 'blur' }
        ],
        age: [
          { required: true, message: '请输入年龄', trigger: 'blur' },
          { type: 'number', message: '年龄必须为数字', trigger: 'blur' }
        ],
        sex: [
          { required: true, message: '请选择性别', trigger: 'change' }
        ],
        phone: [
          { required: true, message: '请输入电话', trigger: 'blur' },
          { pattern: /^1[3456789]\d{9}$/, message: '手机号码格式不正确', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { type: 'email', message: '邮箱格式不正确', trigger: 'blur' }
        ],
        address: [
          { required: true, message: '请输入地址', trigger: 'blur' }
        ],
        departmentId: [
          { required: true, message: '请选择所属部门', trigger: 'change' }
        ]
      },
      departmentList: [
        { value: 1, label: '计算机科学与技术' },
        { value: 2, label: '信息管理与信息系统' },
        { value: 3, label: '软件工程' }
      ]
    }
  },
  created() {
    this.getList()
  },
  methods: {
    getList() {
      api.get('/teacher/list').then(res => {
        this.tableData = res.data
      })
    },
    add() {
      this.addDialogVisible = true
    },
    addFormSubmit() {
      this.$refs.addForm.validate(valid => {
        if (valid) {
          api.post('/teacher/save', this.addForm).then(res => {
            this.addDialogVisible = false
            this.getList()
          })
        }
      })
    },
    edit(row) {
      this.editForm = Object.assign({}, row)
      this.editDialogVisible = true
    },
    editFormSubmit() {
      this.$refs.editForm.validate(valid => {
        if (valid) {
          api.post('/teacher/update', this.editForm).then(res => {
            this.editDialogVisible = false
            this.getList()
          })
        }
      })
    },
    remove(row) {
      this.$confirm('确定删除？', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        api.post('/teacher/delete', { id: row.id }).then(res => {
          this.getList()
        })
      })
    }
  }
}
</script>

代码示例，使用Element,Koa,SQLyog创建用户管理的页面，用户信息包括姓名，电话，邮箱，地址，可以对用户进行增，删，改，查操作

好的，根据您的要求，以下是一个使用Element,Koa,SQLyog创建用户管理页面的代码示例：

前端页面代码（使用Element实现）：

<template>
  <div>
    <el-table :data="userData" border>
      <el-table-column label="姓名" prop="name"></el-table-column>
      <el-table-column label="电话" prop="phone"></el-table-column>
      <el-table-column label="邮箱" prop="email"></el-table-column>
      <el-table-column label="地址" prop="address"></el-table-column>
      <el-table-column>
        <template slot-scope="scope">
          <el-button type="primary" @click="editUser(scope.$index, scope.row)">编辑</el-button>
          <el-button type="danger" @click="removeUser(scope.$index, scope.row)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    <el-dialog :visible.sync="dialogVisible" title="添加/编辑用户信息">
      <el-form :model="userForm">
        <el-form-item label="姓名" :label-width="formLabelWidth">
          <el-input v-model="userForm.name" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="电话" :label-width="formLabelWidth">
          <el-input v-model="userForm.phone" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" :label-width="formLabelWidth">
          <el-input v-model="userForm.email" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="地址" :label-width="formLabelWidth">
          <el-input v-model="userForm.address" autocomplete="off"></el-input>
        </el-form-item>
      </el-form>
      <div slot="footer">
        <el-button @click="dialogVisible = false">取消</el-button>
        <el-button type="primary" @click="saveUser">保存</el-button>
      </div>
    </el-dialog>
    <el-button type="primary" @click="addUser">添加用户</el-button>
  </div>
</template>

<script>
import axios from 'axios';

export default {
  data() {
    return {
      userData: [],        // 用户数据
      userForm: {},        // 用户表单
      dialogVisible: false, // 弹窗可见
      formLabelWidth: '80px', // 表单标签宽度
    }
  },
  mounted() {
    this.getUserData();   // 加载用户数据
  },
  methods: {
    // 获取用户数据
    getUserData() {
      axios.get('/api/user')
        .then(res => {
          this.userData = res.data.data;
        })
        .catch(err => {
          console.log(err);
        });
    },
    // 打开添加用户弹窗
    addUser() {
      this.userForm = {};
      this.dialogVisible = true;
    },
    // 打开编辑用户弹窗
    editUser(index, row) {
      this.userForm = Object.assign({}, row);
      this.dialogVisible = true;
    },
    // 保存用户信息
    saveUser() {
      axios.post('/api/user', this.userForm)
        .then(res => {
          this.dialogVisible = false;
          this.getUserData();
        })
        .catch(err => {
          console.log(err);
        });
    },
    // 删除用户信息
    removeUser(index, row) {
      axios.delete(`/api/user/${row.id}`)
        .then(res => {
          this.getUserData();
        })
        .catch(err => {
          console.log(err);
        });
    },
  }
};
</script>

后端代码（使用Koa和SQLyog实现）：

const Koa = require('koa');
const Router = require('koa-router');
const bodyParser = require('koa-bodyparser');
const mysql = require('mysql');
const cors = require('@koa/cors');

const app = new Koa();
const router = new Router();
const connection = mysql.createConnection({
  host: 'localhost',
  user: 'root',
  password: '',
  database: 'user',
});

app.use(cors());
app.use(bodyParser());

// 获取用户列表
router.get('/api/user', async ctx => {
  try {
    const results = await new Promise((resolve, reject) => {
      connection.query('SELECT * FROM user', (err, results) => {
        if (err) {
          reject(err);
        } else {
          resolve(results);
        }
      });
    });
    ctx.body = {
      code: 0,
      msg: 'success',
      data: results,
    }
  } catch (err) {
    ctx.body = {
      code: -1,
      msg: 'error',
      data: err.message,
    }
  }
});

// 添加/编辑用户
router.post('/api/user', async ctx => {
  const user = ctx.request.body;
  const sql = user.id
    ? `UPDATE user SET name='${user.name}', phone='${user.phone}', email='${user.email}', address='${user.address}' WHERE id=${user.id}`
    : `INSERT INTO user (name, phone, email, address) VALUES ('${user.name}', '${user.phone}', '${user.email}', '${user.address}')`;
  try {
    await new Promise((resolve, reject) => {
      connection.query(sql, (err, results) => {
        if (err) {
          reject(err);
        } else {
          resolve(results);
        }
      });
    });
    ctx.body = {
      code: 0,
      msg: 'success',
    }
  } catch (err) {
    ctx.body = {
      code: -1,
      msg: 'error',
      data: err.message,
    }
  }
});

// 删除用户
router.delete('/api/user/:id', async ctx => {
  const id = ctx.params.id;
  try {
    await new Promise((resolve, reject) => {
      connection.query(`DELETE FROM user WHERE id=${id}`, (err, results) => {
        if (err) {
          reject(err);
        } else {
          resolve(results);
        }
      });
    });
    ctx.body = {
      code: 0,
      msg: 'success',
    }
  } catch (err) {
    ctx.body = {
      code: -1,
      msg: 'error',
      data: err.message,
    }
  }
});

app.use(router.routes());
app.use(router.allowedMethods());

app.listen(3000, () => {
  console.log('server is running at http://localhost:3000');
});

注意，以上代码示例为简化版，可能需要您根据实际情况进行修改。另外，此代码示例仅供参考，不保证完全正确、合法和可用。