springboot中@component注解的使用实例

/**
 * 拦截器--用户身份确认。
 */
public class RestInterceptor implements HandlerInterceptor {    
    private static final Logger log = LoggerFactory.getLogger(RestInterceptor.class);
    private static final String tokenHeader = "Authorization";
 
    /** 
         *  返回值：true表示继续流程（如调用下一个拦截器或处理器）；false表示流程中断（如登录检查失败），不会继续调用其他的拦截器或处理器，此时我们需要通过response来产生响应； 
     */
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        log.info("拦截请求");
        //响应头
        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setHeader("Access-Control-Allow-Headers", "x-requested-with,content-type,authorization");
        response.setHeader("Access-Control-Allow-Methods", "POST,GET,OPTIONS");
        
        if(request.getMethod().equals("OPTIONS")){
            response.setStatus(204);
            return true;
        }        
        log.info("调用接口:method=" +request.getParameter("method")+",params="+JSON.toJSONString(request.getParameterMap()));
        
//        HandlerMethod handlerMethod = (HandlerMethod)handler;
//        RequestAuth requestAuth = handlerMethod.getMethodAnnotation(RequestAuth.class);
//        if(requestAuth!=null && requestAuth.auth()==false){ //非验证API 
//            return true;//跳过验证
//        }
        //验证
//        String token = request.getHeader(tokenHeader);
//        if(token == null || token.equals("")) {
//            log.info("没有找到token");
//            throw new BusinessException(ResMsg.CODE_TOKEN_NOTFOUND, "没有找到token");
//        } else {
//            JWSObject jwsObject = JWSObject.parse(token);
//            Payload payload = jwsObject.getPayload();
//            JSONObject obj = payload.toJSONObject();
            
//            String roleNames = String.valueOf(obj.get("roleNames"));
//            Authentication auth = new Authentication();
//            if(obj.containsKey("platformId")) {
//                Long platformId = Long.valueOf(String.valueOf(obj.get("platformId")));
//                auth.setPlatformId(platformId);
//            }
//            if(obj.containsKey("userid")) {
//                Long userId = Long.valueOf(String.valueOf(obj.get("userid")));
//                auth.setUserId(userId);
//            }
//            if(obj.containsKey("orgId")) {
//                Long orgId = Long.valueOf(String.valueOf(obj.get("orgId")));
//                auth.setOrgId(orgId);
//            }
//            if(obj.containsKey("orgid")) {//为兼容老版本的接口
//                String orgid = String.valueOf(obj.get("orgid"));
//                orgid = orgid.replace(",", "");
//                Long orgId = Long.valueOf(orgid);
//                auth.setOrgId(orgId);
//            }
//            auth.setRoleNames(roleNames);
//            SecurityContext.setContext(auth);
//            JwtUtil.verify(jwsObject);
//        }
        return true;
    }
 
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
            ModelAndView modelAndView) throws Exception {
        //log.info("处理中");
    }
 
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
            throws Exception {
        if(ex != null) {
            log.error("接口处理异常:"+ex);
            throw ex;
        }
    }
}

public class RestInterceptor implements HandlerInterceptor {    
    private static final Logger log = LoggerFactory.getLogger(RestInterceptor.class);
    private static final String tokenHeader = "Authorization";
 
    /** 
         * 返回值：true表示继续流程（如调用下一个拦截器或处理器）；false表示流程中断（如登录检查失败），不会继续调用其他的拦截器或处理器，此时我们需要通过response来产生响应； 
     */
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        log.info("拦截请求");
          
        if(request.getMethod().equals("OPTIONS")){
            response.setStatus(204);
            return true;
        }        
        log.info("调用接口:method=" +request.getParameter("method")+",params="+JSON.toJSONString(request.getParameterMap()));         
        return true;
    }
 
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
            ModelAndView modelAndView) throws Exception {
        //log.info("处理中");
    }
 
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
            throws Exception {
        if(ex != null) {
            log.error("接口处理异常:"+ex);
            throw ex;
        }
    }
}

@Component
public class SimpleCORSFilter implements Filter {
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
        HttpServletResponse response = (HttpServletResponse) res;
        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
        response.setHeader("Access-Control-Max-Age", "3600");
        response.setHeader("Access-Control-Allow-Headers", "x-requested-with,content-type,authorization");
        chain.doFilter(req, res);
    }
 
    public void init(FilterConfig filterConfig) {} 
    public void destroy() {}    
}