1.登录接口

controller层
@PostMapping
@ApiOperation(value="申请token")
public ResponseData<Map> applyToken(@RequestBody LoginUser loginUser){
   Map<String, String> map = new HashMap<>();
   map.put("token", loginService.applyAccessToken(loginUser));
   return ResponseData.success().setData(map);
}

service层代码
public String applyAccessToken(LoginUser loginUser){
        1.查询登录账号信息是否存在以及合法性
        2.账户合法返回token,不合法报异常(使用jwt生成token)
}

jwt依赖
<dependencies>
    <dependency>
        <groupId>io.jsonwebtoken</groupId>
        <artifactId>jjwt</artifactId>
        <version>0.6.0</version>
    </dependency>
</dependencies>

jwtUtil工具类
@Component
@ConfigurationProperties("jwt.config")
public class jwtUtil{

    private String key ;
    private long ttl;

    //get,set方法
    public String createJWT(String uname, String subject, String type) {
        long