生成JWT令牌

 依赖

<!--jwt令牌-->
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
<version>0.9.1</version>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.0</version>
</dependency>

解析JWT令牌

案例

package com.lwy.controller;

import com.lwy.pojo.Emp;
import com.lwy.pojo.Result;
import com.lwy.service.EmpService;
import com.lwy.utils.JwtUtils;
import io.jsonwebtoken.Claims;
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 LoginController {
    @Autowired
    private EmpService empService;

    /**
     * 登录
     * @param emp
     * @return
     */
    @PostMapping("/login")
    public Result login(@RequestBody Emp emp){
        log.info("员工登录,{}",emp);
        Emp result = empService.login(emp);

        //登录成功，生成令牌jwt
        if(result !=null){
            Map<String,Object> claims = new HashMap<>();
            claims.put("id", result.getId());
            claims.put("name", result.getName());
            claims.put("username",result.getUsername());
            String jwt = JwtUtils.generateJwt(claims); //jwt包含了当前登录的信息
            return Result.success(jwt);
        }
        return result !=null?Result.success("登录成功"):Result.error("用户名或密码错误");
    }
}