千峰商城-springboot项目搭建-54-拦截器校验Token
1.创建拦截器
@Component
public class CheckTokenInterceptor implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
String token = request.getParameter("token");
if (token == null) {
ResultVO resultVO = new ResultVO(ResStatus.NO, "请先登录", null);
//提示请先登录
doResponse(response,resultVO);
return false;
} else {
try {
//验证token
JwtParser parser = Jwts.parser();
parser.setSigningKey("QIANfeng6666");//解析token时的SigningKey必须与设置token时设置的密码一致
//如果token正确(密码正确,有效期内)则正常执行,否则抛出异常
Jwt<Header, Claims> claimsJwt = parser.parseClaimsJwt(token);
return true;
} catch (ExpiredJwtException e) {
ResultVO resultVO = new ResultVO(ResStatus.NO, "登陆过期", null);
doResponse(response,resultVO);
} catch (UnsupportedJwtException e) {
ResultVO resultVO = new ResultVO(ResStatus.NO, "token不合法", null);
doResponse(response,resultVO);
} catch (Exception e) {
ResultVO resultVO = new ResultVO(ResStatus.NO, "请先登录", null);
doResponse(response,resultVO);
}
return false;
}
}
private void doResponse(HttpServletResponse response,ResultVO resultVO) throws IOException {
response.setContentType("application/json");
response.setCharacterEncoding("utf-8");
PrintWriter out = response.getWriter();
String s = new ObjectMapper().writeValueAsString(resultVO);
out.println(s);
out.flush();
out.close();
}
}
2.配置拦截器
@Configuration
public class InterceptorConfig implements WebMvcConfigurer {
@Autowired
private CheckTokenInterceptor checkTokenInterceptor;
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(checkTokenInterceptor)
.addPathPatterns("/**")
.excludePathPatterns("/user/**");
}
}
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