Golang / Java无法从中间件解组JSON

I am writing a middleware for a GoLang application (http://hoverfly.io/) but having some issues.

The concept is very simple. Golang passes in a JSON input to my Java middleware, and my middleware then returns a modified json output to the Golang application.

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;
import org.json.JSONObject;

public class mid
{

    static String payload  ="";
    public static void main (String[] args) throws Exception
  {
    try {
        @SuppressWarnings("resource")
        Scanner scanner = new Scanner(System.in);


         payload = scanner.nextLine();


        JSONObject obj = new JSONObject(payload);


        JSONObject response = obj.getJSONObject("response");

        response.remove("status");

        response.put("status", "500");



        String newjson = obj.toString();


         write (newjson);

        System.out.print(obj);


    } catch (Exception e) {
        e.printStackTrace();
    }



  }    
}

I then run the program:

./hoverfly -middleware "java -jar mid.jar"

The JSON input to my program is this:

{"response":{"status":200,"body":"\u003c?xml version=\"1.0\"?\u003e\u003cpathList xmlns:xlink=\"http://www.w3.org/1999/xlink\"\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/0/\"\u003e0\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/1/\"\u003e1\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/3/\"\u003e3\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/4/\"\u003e4\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/5/\"\u003e5\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/6/\"\u003e6\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/7/\"\u003e7\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/8/\"\u003e8\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/9/\"\u003e9\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/10/\"\u003e10\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/11/\"\u003e11\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/12/\"\u003e12\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/13/\"\u003e13\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/14/\"\u003e14\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/15/\"\u003e15\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/16/\"\u003e16\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/17/\"\u003e17\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/18/\"\u003e18\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/19/\"\u003e19\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/20/\"\u003e20\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/21/\"\u003e21\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/22/\"\u003e22\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/23/\"\u003e23\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/25/\"\u003e25\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/26/\"\u003e26\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/27/\"\u003e27\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/28/\"\u003e28\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/29/\"\u003e29\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/30/\"\u003e30\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/31/\"\u003e31\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/32/\"\u003e32\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/33/\"\u003e33\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/34/\"\u003e34\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/35/\"\u003e35\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/36/\"\u003e36\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/37/\"\u003e37\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/38/\"\u003e38\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/39/\"\u003e39\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/40/\"\u003e40\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/41/\"\u003e41\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/42/\"\u003e42\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/43/\"\u003e43\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/44/\"\u003e44\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/45/\"\u003e45\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/46/\"\u003e46\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/47/\"\u003e47\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/48/\"\u003e48\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/49/\"\u003e49\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/50/\"\u003e50\u003c/path\u003e
    \u003cpath xlink:href=\"http://www.testapi.com/endpoint/path/5555/\"\u003e5555\u003c/path\u003e
\u003c/pathList\u003e","encodedBody":false,"headers":{"Content-Length":["4580"],"Content-Type":["application/xml"],"Date":["Fri, 02 Sep 2016 11:31:17 GMT"],"Hoverfly":["Was-Here"],"Server":["Apache-Coyote/1.1"]}},"request":{"requestType":"recording","path":"/endpoint/path/","method":"GET","destination":"www.testapi.com","scheme":"http","query":"","body":"","headers":{"Accept":["text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"],"Accept-Encoding":["gzip, deflate"],"Accept-Language":["en-US,sv-SE;q=0.8,sv;q=0.5,en;q=0.3"],"Connection":["keep-alive"],"User-Agent":["Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:47.0) Gecko/20100101 Firefox/47.0"]}}}

The output sent to hoverfly is then this:

{"response":{"headers":{"Hoverfly":["Was-Here"],"Date":["Fri, 02 Sep 2016 11:31:17 GMT"],"Content-Length":["4580"],"Content-Type":["application/xml"],"Server":["Apache-Coyote/1.1"]},"body":"<?xml version=\"1.0\"?><endpointList xmlns:xlink=\"http://www.w3.org/1999/xlink\">
    <endpoint xlink:href=\"http://testapi/path/endpoint/0/\">0<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/1/\">1<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/3/\">3<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/4/\">4<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/5/\">5<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/6/\">6<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/7/\">7<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/8/\">8<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/9/\">9<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/10/\">10<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/11/\">11<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/12/\">12<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/13/\">13<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/14/\">14<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/15/\">15<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/16/\">16<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/17/\">17<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/18/\">18<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/19/\">19<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/20/\">20<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/21/\">21<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/22/\">22<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/23/\">23<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/25/\">25<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/26/\">26<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/27/\">27<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/28/\">28<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/29/\">29<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/30/\">30<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/31/\">31<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/32/\">32<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/33/\">33<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/34/\">34<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/35/\">35<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/36/\">36<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/37/\">37<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/38/\">38<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/39/\">39<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/40/\">40<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/41/\">41<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/42/\">42<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/43/\">43<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/44/\">44<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/45/\">45<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/46/\">46<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/47/\">47<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/48/\">48<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/49/\">49<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/50/\">50<\/endpoint>
    <endpoint xlink:href=\"http://testapi/path/endpoint/5555/\">5555<\/endpoint>
<\/endpointList>","status":"500","encodedBody":false},"request":{"headers":{"Accept-Language":["en-US,sv-SE;q=0.8,sv;q=0.5,en;q=0.3"],"Accept-Encoding":["gzip, deflate"],"User-Agent":["Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:47.0) Gecko/20100101 Firefox/47.0"],"Connection":["keep-alive"],"Accept":["text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"]},"body":"","scheme":"http","query":"","path":"/path/endpoint/","method":"GET","requestType":"recording","destination":"testapi"}}

However when I run this I get the error:

"error":"json: cannot unmarshal string into Go value of type int","level":"error","msg":"Failed to unmarshal JSON

Is Go expecting some kind of special JSON format or what can the problem be?

All help is appreciated.

写回答
好问题 0 提建议
追加酬金
关注问题
分享
邀请回答
编辑收藏删除结题
收藏举报

1条回答默认最新

关注

码龄粉丝数原力等级 --

被采纳

被点赞

采纳率
dongxun5349 2016-09-04 17:35
关注
The error message says cannot unmarshal string into Go value of type int. Which means you are sending something as string when Go is expecting it to be an int.

The Go code is trying to unmarshall JSON using this definition

Solution:

"status":"500" should be sent as "status":500

Try

response.put("status", 500);
本回答被题主选为最佳回答 , 对您是否有帮助呢?

解决无用
评论打赏
分享
举报

评论

按下Enter换行，Ctrl+Enter发表内容

报告相同问题？

关注问题

在Go / Golang中解组嵌套的JSON数组 json
2016-10-06 17:45

回答 2 已采纳 Yes the answer is just an slice of slices: type AutoGenerated [][][]struct { Aaa string `jso
golang结构仅部分从json解组 json
2017-10-22 15:25

回答 1 已采纳 In your JSON, you have a typo (an extra colon). You call the field in question "Id:" instead of "I
如何避免找不到包“ github.com/golang/protobuf/jsonpb”错误 docker
2018-11-02 13:12

回答 1 已采纳 Make sure you installed all your package inside container. Because your docker container is a diff
golang java 中间件_Go middleware中间件
2021-03-03 11:26

weixin_39992788的博客先从业务开发角度出发，来逐渐引出中间件。一、刚开始时业务开发开始业务开发时，业务需求比较少。当我们最开始进行业务开发时，需求不是很多。第一个需求产是品向大家打声招呼：“hello world”。接到需求任务，...
Golang解码/解组JSON中的无效unicode json
2014-06-18 19:41

回答 1 已采纳 You can use json.RawMessage instead of string, that way json.Decode won't try to decode the invali
扫描github.com/golang/protobuf/proto/testdata时出错：找不到包“。”
2018-05-27 07:53

回答 1 已采纳 Before your own PR (995), there was glide issue 968 It looks like it's caused by a repository'
Golang：如何解析/解组/解码json数组API响应？ json
2017-04-26 03:18

回答 2 已采纳 Your solution: data := struct { Items []struct { Project string `json:"project"`
golang无法代替java_论golang是世界上最好的语言
2021-03-19 08:20

weixin_39756416的博客原标题：论golang是世界上最好的语言文 | zengfan共 3729字，阅读需 9分钟概述golang is a better C and a simple C++golang主要特性1、语法简单舍弃语法糖，严格控制关键字C++语法糖之多，令人发指，而C又太过于...
在Golang中解组json json
2019-01-05 04:37

回答 1 已采纳 For marshalling and unmarshalling, fields must be exported. type Context struct { Tit
Golang从api.nal.usda.gov/ndb解组JSON json
2017-04-11 15:02

回答 2 已采纳 The Go types do not match the structure of the JSON. There's one more level of objects in the JSON
Golang-通过更改键值来解组JSON json
2016-08-05 16:57

回答 1 已采纳 You have a series of JSON objects, mapping a unique id to each Device. Unmarshal that into a map
golang gin自定义用户登录校验中间件代码示例
2022-08-27 15:42

学亮编程手记的博客【代码】golang gin自定义用户登录校验中间件代码示例。
Json在Golang中解码/解组 json
2016-04-07 05:09

回答 2 已采纳 Json arrays should be unmarshalled into Go slices or arrays. Looks like you are trying to unmarsha
golang java微服务_Golang 微服务教程（四）
2021-02-27 13:31

郑多强的博客 } // AuthWrapper 是一个高阶函数，入参是 ”下一步“ 函数，出参是认证函数 // 在返回的函数内部处理完认证逻辑后，再手动调用 fn() 进行下一步处理 // token 是从 consignment-ci 上下文中取出的，再调用 user-...
golang学习笔记-gin中间件
2020-07-28 23:34

搬砖的小青年儿的博客 gin中间件类似java的拦截器，通过中间件可以在处理具体的route请求时，提前做一些业务。比如用户有效性的校验，特定日志格式的打印，错误日志的打印等等。 gin的中间件大致可以分为两类，全局中间件和路由中间件，...
没有解决我的问题, 去提问

悬赏问题

¥15 腾讯云如何建立同一个项目中物模型之间的联系
¥30 VMware 云桌面水印如何添加
¥15 用ns3仿真出5G核心网网元
¥15 matlab答疑关于海上风电的爬坡事件检测
¥88 python部署量化回测异常问题
¥30 酬劳2w元求合作写文章
¥15 在现有系统基础上增加功能
¥15 远程桌面文档内容复制粘贴，格式会变化
¥15 这种微信登录授权谁可以做啊
¥15 请问我该如何添加自己的数据去运行蚁群算法代码

Golang / Java无法从中间件解组JSON

1条回答 默认 最新

悬赏问题

1条回答默认最新