springboot -- jwt
LoginInterceptor
LoginInterceptor
/**
* 登陆拦截
*/
@Component
@Slf4j
public class LoginInterceptor implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
if (request.getMethod().equals("OPTIONS")) {
log.info("11111");
response.setStatus(HttpServletResponse.SC_OK);
return true;
}
System.out.println("进入登陆拦截器...");
String token=request.getHeader("token");
System.out.println("***检查令牌"+token);
Claims claims= Jwts.parser().setSigningKey("Mr_xiao").parseClaimsJws(token).getBody();
System.out.println(claims);
// 出错了会报异常
return true;
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
}
}
/**
* 支持跨域
*/
@Configuration
public class WebConfig implements WebMvcConfigurer {
@Autowired
LoginInterceptor login_lj;
@Override
public void addCorsMappings(CorsRegistry registry) {
registry.addMapping("/**")
.allowedOriginPatterns("*")
.allowedMethods("*")
.allowCredentials(true)
.maxAge(3600)
.allowedHeaders("*");
}
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(login_lj)
.addPathPatterns("/**")
.excludePathPatterns("/swagger-ui/**")
.excludePathPatterns("/user/login");
}
}
public class JwtUtil {
public static String maketoken(Object obj){
Date now=new Date(); //当前时间
long guoqi=now.getTime()+1000*120; //过期时间2分钟
Date expire=new Date(guoqi); //转型
JwtBuilder builder= Jwts.builder().setId("001")
.setIssuedAt(now) //创建时间
.setExpiration(expire) //过期时间
.claim("login",obj) //可以存对象[Object]
.signWith(SignatureAlgorithm.HS256,"Mr_xiao"); //设置签名 用HS256算法,设置密钥为Mr_xiao
String token=builder.compact();
return token;
}
}
@ApiOperation(value = "用户登录", notes = "登录")
@GetMapping("/login")
public R<String> login(@ApiParam(value = "用户名", required = true) String tel, @ApiParam(value = "用户名", required = true) String idcode) {
System.out.println("前台数据:"+tel+"pwd="+idcode);
LambdaQueryWrapper<User> lambdaQueryWrapper = new LambdaQueryWrapper<>();
lambdaQueryWrapper.eq(StringUtils.isNotEmpty(tel), User::getTel, tel);
User u1 = userService.getOne(lambdaQueryWrapper);
System.out.println("user="+u1);
String token= JwtUtil.maketoken(u1); //封装令牌
if(u1!=null){
return R.success(token);
}else {
return R.error("登陆失败");
}
}
https://blog.csdn.net/m_xiaozhilei/article/details/121740064
