zuulGateway 通过filter统一修改返回值的操作

import java.io.InputStream;
import java.nio.charset.Charset;
import org.springframework.cloud.netflix.zuul.filters.support.FilterConstants;
import org.springframework.util.StreamUtils;
import org.springframework.util.StringUtils;
import com.netflix.zuul.ZuulFilter;
import com.netflix.zuul.context.RequestContext;
import com.poly.zuul.common.Constants;
import com.poly.zuul.enums.ServiceId;
import com.poly.zuul.utils.AESJSEncryptUtils;
import com.poly.zuul.utils.RsaEncryptUtil;
/**
 * 返回值输出过滤器，这里用来处理返回值
 * 
 * @Title: ResponseFilter
 * @Description:
 * @author kokJuis
 * @date 上午9:52:42
 */
public class ResponseFilter extends ZuulFilter
{
 @Override
 public Object run()
 {
  RequestContext context = RequestContext.getCurrentContext();
  try
  {
   // 获取返回值内容，加以处理
   InputStream stream = context.getResponseDataStream();
   String body = StreamUtils.copyToString(stream, Charset.forName("UTF-8"));
   String returnStr = "";
 
 //你的处理逻辑，加密，添加新的返回值等等.....
 
   // 内容重新写入
   context.setResponseBody(returnStr);
  }
  catch (Exception e)
  {
   e.printStackTrace();
  }
  return null;
 }
 @Override
 public boolean shouldFilter()
 {
  RequestContext ctx = RequestContext.getCurrentContext();
  String requestURI = String.valueOf(ctx.get("requestURI"));
  if (requestURI.contains(Constants.alipay))
  {
 //不需要处理的URL请求，返回false
   return false;
  }
  return true;
 }
 @Override
 public int filterOrder()
 {
  return FilterConstants.SEND_RESPONSE_FILTER_ORDER - 3;
 }
 @Override
 public String filterType()
 {
  return FilterConstants.POST_TYPE;// 在请求被处理之后，会进入该过滤器
 }
}

 @Bean
 public ResponseFilter responseFilter()
 {
  return new ResponseFilter();
 }

package com.zledu.commonentity.entity;
import lombok.AllArgsConstructor;
import lombok.Data;
import java.io.Serializable;
import java.util.List;
/**
 * @Author: husToy.Wang
 * @Date: 2019/6/27 8:55
 * @Version 1.0
 * @date 2019-06-27 08:58
 * @author wangzhilei
 */
@Data
public class BaseResult implements Serializable {
 private static final String OK = "OK";
 private static final String NotOK = "notOk" ;
 private static final String SUCCESS = "操作成功";
 private String result;
 private Object data;
 private String success;
 private Cursor cursor;
 private List<Error> errors;
 // TODO 返回无参ok
 public static BaseResult ok(){
  return createRestult(OK, null, SUCCESS,null,null ) ;
 }
 // TODO 返回带success 的 ok
 public static BaseResult ok(String success){
  return createRestult(OK, null, success, null, null);
 }
 // TODO 返回带 data 的ok
 public static BaseResult ok(Object data){
  return createRestult(OK, data, SUCCESS, null, null);
 }
 // 返回带分页的数据
 public static BaseResult ok(Object data, Cursor cursor) {
  return createRestult(OK, data, SUCCESS, cursor, null);
 }
 // TODO 返回错误数据
 public static BaseResult notOk(List<BaseResult.Error> errors){
  return createRestult(NotOK, null, null, null, errors);
 }
 // TODO 构建错误与正确方法
 public static BaseResult createRestult(String result, Object data,String success, Cursor cursor, List<BaseResult.Error> errors){
  BaseResult baseResult = new BaseResult();
  baseResult.setResult(result);
  baseResult.setData(data);
  baseResult.setSuccess(success);
  baseResult.setCursor(cursor);
  baseResult.setErrors(errors);
  return baseResult;
 }
 @Data
 @AllArgsConstructor
 public static class Cursor {
  private int total;
  private int offset;
  private int limit;
 }
 @Data
 @AllArgsConstructor
 public static class Error{
  private String field;
  private String message;
 }
}