后台功能开发
登录功能
接口地址 /employee/login
请求方式 POST
请求参数
参数 | 类型 | 必须 | 说明 |
---|---|---|---|
username | string | 是 | 用户名 |
password | string | 是 | 密码 |
响应数据
参数 | 类型 | 说明 |
---|---|---|
code | int | 用户名 |
msg | string | 消息 |
data | string | 数据 |
代码实现
Entity
java
package com.github.mouday.reggie.entity;
import com.baomidou.mybatisplus.annotation.FieldFill;
import com.baomidou.mybatisplus.annotation.TableField;
import lombok.Data;
import java.io.Serializable;
import java.time.LocalDateTime;
/**
* 员工实体类
*/
@Data
public class Employee implements Serializable {
private static final long serialVersionUID = 1L;
private Long id;
private String username;
private String name;
private String password;
private String phone;
private String sex;
private String idNumber;
private Integer status;
private LocalDateTime createTime;
private LocalDateTime updateTime;
@TableField(fill = FieldFill.INSERT)
private Long createUser;
@TableField(fill = FieldFill.INSERT_UPDATE)
private Long updateUser;
}
Mapper
java
package com.github.mouday.reggie.mapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.github.mouday.reggie.entity.Employee;
import org.apache.ibatis.annotations.Mapper;
@Mapper
public interface EmployeeMapper extends BaseMapper<Employee> {
}
Service接口
java
package com.github.mouday.reggie.service;
import com.baomidou.mybatisplus.extension.service.IService;
import com.github.mouday.reggie.entity.Employee;
public interface EmployeeService extends IService<Employee> {
}
ServiceImpl
java
package com.github.mouday.reggie.service.impl;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.github.mouday.reggie.entity.Employee;
import com.github.mouday.reggie.mapper.EmployeeMapper;
import com.github.mouday.reggie.service.EmployeeService;
import org.springframework.stereotype.Service;
@Service
public class EmployeeServiceImpl
extends ServiceImpl<EmployeeMapper, Employee>
implements EmployeeService {
}
Controller
java
package com.github.mouday.reggie.controller;
import com.github.mouday.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
@Autowired
private EmployeeService employeeService;
}
通用返回结果
java
package com.github.mouday.reggie.common;
import lombok.Data;
import java.util.HashMap;
import java.util.Map;
/**
* 通用返回结果
* @param <T>
*/
@Data
public class R<T> {
private Integer code; //编码:1成功,0和其它数字为失败
private String msg; //错误信息
private T data; //数据
private Map map = new HashMap(); //动态数据
public static <T> R<T> success(T object) {
R<T> r = new R<T>();
r.data = object;
r.code = 1;
return r;
}
public static <T> R<T> error(String msg) {
R r = new R();
r.msg = msg;
r.code = 0;
return r;
}
public R<T> add(String key, Object value) {
this.map.put(key, value);
return this;
}
}
登录页面
http://127.0.0.1:8080/backend/page/login/login.html
登录逻辑实现
java
/**
* 登录逻辑
* 1、通过username查数据库
* 2、校验密码password md5加密
* 3、判断账号是否可用 status
* 4、登录成功
*
* @param employee
* @return
*/
@PostMapping("/login")
public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
// 1、通过username查数据库
LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
queryWrapper.eq(Employee::getUsername, employee.getUsername());
Employee employeeRow = employeeService.getOne(queryWrapper);
if (employeeRow == null) {
return R.error("登录失败");
}
// 2、校验密码password md5加密
String password = employee.getPassword();
password = DigestUtils.md5DigestAsHex(password.getBytes());
if (!employeeRow.getPassword().equals(password)) {
return R.error("登录失败");
}
// 3、判断账号是否可用 status
if (employeeRow.getStatus() == 0) {
return R.error("账号已禁用");
}
// 4、登录成功
request.getSession().setAttribute("employee", employeeRow.getId());
return R.success(employeeRow);
}
退出功能
接口地址 /employee/logout
请求方式 POST
请求参数
无
响应数据
无
代码实现
java
/**
* 退出逻辑
* 清除session
*
* @return R
*/
@PostMapping("/logout")
public R<Employee> logout(HttpServletRequest request) {
request.getSession().removeAttribute("employee");
return R.success(null);
}
完善登录功能
过滤器或者拦截器限制未登录用户查看页面
登录拦截器
java
package com.github.mouday.reggie.filter;
import com.alibaba.fastjson.JSON;
import com.github.mouday.reggie.common.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.util.AntPathMatcher;
import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
* 检查用户是否已登录
*/
@WebFilter(filterName = "loginCheckFilter", urlPatterns = "/*")
@Slf4j
public class LoginCheckFilter implements Filter {
// 路径匹配器
private static final AntPathMatcher PATH_MATCHER = new AntPathMatcher();
// 白名单
private static String[] whiteListUrls = new String[]{
"/employee/login",
"/employee/logout",
"/backend/**",
"/front/**",
};
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) servletRequest;
HttpServletResponse response = (HttpServletResponse) servletResponse;
// 1、获取请求uri
String requestURI = request.getRequestURI();
log.info("LoginCheckFilter requestURI: {}", requestURI);
// 2、白名单放行
if (this.isWhiteUrl(requestURI)) {
filterChain.doFilter(request, response);
return;
}
// 3、非白名单登录后放行
if(request.getSession().getAttribute("employee") != null){
filterChain.doFilter(request, response);
return;
}
// 4、未登录,返回与前端约定好跳转登录的标识
response.getWriter().write(JSON.toJSONString(R.error("NOTLOGIN")));
}
/**
* 检查路径是否是白名单
*
* @param url
* @return
*/
private boolean isWhiteUrl(String url) {
for (String whiteUrl : whiteListUrls) {
boolean match = PATH_MATCHER.match(whiteUrl, url);
if (match) {
return true;
}
}
return false;
}
}
启动类添加注解ServletComponentScan
java
package com.github.mouday.reggie;
import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;
@Slf4j
@SpringBootApplication
@ServletComponentScan
public class ReggieApplication {
public static void main(String[] args) {
SpringApplication.run(ReggieApplication.class, args);
log.info("项目启动成功:http://127.0.0.1:8080");
}
}