springBoot和vue实现登录操作和JWT验证（1）

package com.itheima.controller;
import com.itheima.pojo.Emp;
import com.itheima.pojo.Result;
import com.itheima.service.EmpService;
import com.itheima.utils.JwtUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import java.util.HashMap;
import java.util.Map;
@Slf4j
@RestController
public class LoginConroller {
    @Autowired
    private EmpService empService;
    @PostMapping("/login")
    public Result login(@RequestBody Emp emp)
    {log.info("员工登录:{}");
        log.info("登录");
        Emp e=empService.login(emp);
        //登录成功
        if(e!=null){
            Map<String, Object> claims=new HashMap<>();
            claims.put("id",e.getId());
            claims.put("name",e.getName());
            claims.put("username",e.getUsername());
           String jwt= JwtUtils.generateJwt(claims);
           return Result.success(jwt);
        }
        return e!=null?Result.success():Result.error("用户名和密码错误");
    }
}

package com.itheima.service;
import com.itheima.pojo.Emp;
import com.itheima.pojo.PageBean;
import org.springframework.stereotype.Service;
import java.time.LocalDate;
import java.util.List;
public interface EmpService {
    PageBean page(Integer page, Integer pageSize, String name, Short gender, LocalDate begin,LocalDate end);
    void delete(List<Integer> ids);
    void save(Emp emp);
    Emp getById(Integer id);
    void update(Emp emp);
    Emp login(Emp emp);
}

package com.itheima.service.impl;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.autoconfigure.PageHelperAutoConfiguration;
import com.itheima.mapper.EmpMapper;
import com.itheima.pojo.Emp;
import com.itheima.pojo.PageBean;
import com.itheima.service.EmpService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.List;
//@Service
//public class EmpServiceImpl implements EmpService {
//    @Autowired
//    private EmpMapper empMapper;
//    @Override
//    public PageBean page(Integer page, Integer pageSize) {
//        Long count= empMapper.count();
//        Integer start=(page-1)*pageSize;
//        empMapper.page(start,pageSize);
//        List<Emp> empList=empMapper.page(start,pageSize);
//        PageBean pageBean=new PageBean(count,empList);
//        return pageBean;
//    }
//}
@Service
public class EmpServiceImpl implements EmpService {
    @Autowired
    private EmpMapper empMapper;
    @Override
    public PageBean page(Integer page, Integer pageSize, String name, Short gender, LocalDate begin, LocalDate end) {
        PageHelper.startPage(page,pageSize);
        List<Emp> empList = empMapper.list(name,gender,begin,end);
        Page<Emp> p= (Page<Emp>) empList;
        PageBean pageBean=new PageBean(p.getTotal(),p.getResult());
        return pageBean;
    }
    @Override
    public void delete(List<Integer> ids){
        empMapper.delete(ids);
    }
    @Override
    public void save(Emp emp) {
        emp.setCreateTime(LocalDateTime.now());
        emp.setUpdateTime(LocalDateTime.now());
        empMapper.insert(emp);
    }
    @Override
    public Emp getById(Integer id) {
        return empMapper.getById(id);
    }
    @Override
    public void update(Emp emp) {
        emp.setUpdateTime(LocalDateTime.now());
        empMapper.update(emp);
    }
    @Override
    public Emp login(Emp emp) {
        return empMapper.getByUsernameAndPassword(emp);
    }
}

package com.itheima.mapper;
import com.itheima.pojo.Emp;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;
import java.time.LocalDate;
import java.util.List;
/**
 * 员工管理
 */
//@Mapper
//public interface EmpMapper {
//    @Select("select count(*) from emp")
//    public Long count();
//@Select("select * from emp limit #{start},#{pageSize}")
//    public List<Emp> page(Integer start, Integer pageSize);
//}
@Mapper
public interface EmpMapper {
   // @Select("select * from emp")
    public List<Emp> list(String name, Short gender, LocalDate begin, LocalDate end);
    void delete(List<Integer> ids);
@Insert("insert into emp(username,name,gender,image,job,entrydate,dept_id,create_time,update_time)"+
"values(#{username},#{name},#{gender},#{image},#{job},#{entrydate},#{deptId},#{createTime},#{updateTime})")
    void insert(Emp emp);
    @Select("select * from emp where id=#{id}")
    Emp getById(Integer id);
    void update(Emp emp);
    @Select("select * from emp where username=#{username} and password=#{password}"
            )
    Emp getByUsernameAndPassword(Emp emp);
@Delete("delete from emp where dept_id=#{deptId}")
    void deleteByDeptId(Integer deptId);
}