DefaultRedirectStrategyclient.setRedirectHandler(new DefaultRedirectHandler() {                                      @Override                      public boolean isRedirectRequested(HttpResponse response, HttpContext context) {                          boolean isRedirect = super.isRedirectRequested(response, context);                          if (!isRedirect) {                              int responseCode = response.getStatusLine().getStatusCode();                              if (responseCode == 301 || responseCode == 302) {                                  return true;                              }                          }                          return isRedirect;                      }                  });      /**     * @since 4.2     */    protected boolean isRedirectable(final String method) {        for (final String m: REDIRECT_METHODS) {            if (m.equalsIgnoreCase(method)) {                return true;            }        }        return false;    }   /**     * Redirectable methods.     */    private static final String[] REDIRECT_METHODS = new String[] {        HttpGet.METHOD_NAME,        HttpHead.METHOD_NAME    };http://blog.csdn.net/chszs/article/details/16996489

/**      * spring中Around通知        * @param joinPoint      * @return      * @throws Throwable       */      @Around("com.leanyu.lcsystem.pointcut.PointcutsDefinition.inServiceLayer()")         public Object checkPermissionAround( ProceedingJoinPoint joinPoint )        {          try          {                Object[] args           = joinPoint.getArgs();               AbstractRequest request =  (AbstractRequest)args[0];               int userId          = request.getUserId();               String password     = request.getPassword();               Signature signature = joinPoint.getSignature();               String service      = signature.getDeclaringTypeName();               String method       = signature.getName();                                          if ( checkPermission.hasServicePermission(userId, service , method , password) )               {                   Object result = joinPoint.proceed( args );                     return result;               }                          }catch(Throwable e)           {               logger.error(e.toString(), e);           }           return null;      }