Java JSON 的 Http 415 Unsupported Media type 错误
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Http 415 Unsupported Media type error with JSON
提问by user3443794
I am calling REST service with JSON request and it gives Http 415 "Unsupported Media Type" error.
我正在使用 JSON 请求调用 REST 服务，它给出了 Http 415“不支持的媒体类型”错误。
Request content type is set to ("Content-Type", "application/json; charset=utf8").
请求内容类型设置为 ("Content-Type", "application/json; charset=utf8")。
It works fine if I don't include Json object in the request. I am using google-gson-2.2.4 library for json.
如果我不在请求中包含 Json 对象，它工作正常。我正在为 json 使用 google-gson-2.2.4 库。
I tried using a couple of different libraries but it made no difference.
我尝试使用几个不同的库，但没有任何区别。
Can anybody please help me to resolve this?
有人可以帮我解决这个问题吗？
Here is my code:
这是我的代码：
public static void main(String[] args) throws Exception
{
JsonObject requestJson = new JsonObject();
String url = "xxx";
//method call for generating json
requestJson = generateJSON();
URL myurl = new URL(url);
HttpURLConnection con = (HttpURLConnection)myurl.openConnection();
con.setDoOutput(true);
con.setDoInput(true);
con.setRequestProperty("Content-Type", "application/json; charset=utf8");
con.setRequestProperty("Accept", "application/json");
con.setRequestProperty("Method", "POST");
OutputStream os = con.getOutputStream();
os.write(requestJson.toString().getBytes("UTF-8"));
os.close();
StringBuilder sb = new StringBuilder();
int HttpResult =con.getResponseCode();
if(HttpResult ==HttpURLConnection.HTTP_OK){
BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream(),"utf-8"));
String line = null;
while ((line = br.readLine()) != null) {
sb.append(line + "\n");
}
br.close();
System.out.println(""+sb.toString());
}else{
System.out.println(con.getResponseCode());
System.out.println(con.getResponseMessage());
}
}
public static JsonObject generateJSON () throws MalformedURLException
{
String s = "http://www.abc.com";
s.replaceAll("/", "\/");
JsonObject reqparam=new JsonObject();
reqparam.addProperty("type", "arl");
reqparam.addProperty("action", "remove");
reqparam.addProperty("domain", "staging");
reqparam.addProperty("objects", s);
return reqparam;
}
}
Value of requestJson.toString is :
requestJson.toString 的值是：
{"type":"arl","action":"remove","domain":"staging","objects":"http://www.abc.com"}
{"type":"arl","action":"remove","domain":"staging","objects":" http://www.abc.com"}
采纳答案by user3443794
Not sure about the reason but Removing lines charset=utf8from con.setRequestProperty("Content-Type", "application/json; charset=utf8")resolved the issue.
不知道的原因，但删除线charset=utf8，从 con.setRequestProperty("Content-Type", "application/json; charset=utf8")解决问题。
回答by Rahul Rastogi
I was sending "delete" rest request and it failed with 415. I saw what content-type my server uses to hit the api. In my case, It was "application/json" instead of "application/json; charset=utf8".
我正在发送“删除”休息请求，但失败了 415。我看到我的服务器使用什么内容类型来访问 api。就我而言，它是“application/json”而不是“application/json; charset=utf8”。
So ask from your api developer And in the meantime try sending request with content-type= "application/json" only.
因此，请询问您的 api 开发人员，同时尝试仅使用 content-type="application/json" 发送请求。
回答by Dhruv
This is because charset=utf8should be without a space after application/json. That will work fine. Use it like application/json;charset=utf-8
这是因为charset=utf8应该没有后一个空间application/json。那会工作得很好。使用它就像application/json;charset=utf-8
回答by karthik
If you are making jquery ajax request, dont forget to add
如果您正在制作 jquery ajax 请求，请不要忘记添加
contentType:'application/json'
回答by Parth Solanki
Add Content-Type: application/jsonand Accept: application/json
添加内容类型：application/json并接受：application/json
回答by spajdo
I had the same issue. My problem was complicated object for serialization. One attribute of my object was Map<Object1, List<Object2>>.
I changed this attribute like List<Object3>where Object3contains Object1and Object2and everything works fine.
我遇到过同样的问题。我的问题是序列化的复杂对象。我的对象的一个属性是Map<Object1, List<Object2>>. 我改变了这样的属性List<Object3>，其中Object3包含Object1和Object2一切工作正常。
回答by Murali Gundappan
Some times Charset Metada breaks the json while sending in the request. Better, not use charset=utf8 in the request type.
有时，Charset Metada 在发送请求时会破坏 json。最好不要在请求类型中使用 charset=utf8 。
回答by Jero Dungog
I know this is way too late to help the OP with his problem, but to all of us who is just encountering this problem, I had solved this issue by removing the constructor with parameters of my Class which was meant to hold the json data.
我知道这对于帮助 OP 解决他的问题为时已晚，但对于我们所有刚刚遇到此问题的人来说，我已经通过删除带有我的类的参数的构造函数来解决这个问题，该参数用于保存 json 数据。
回答by Arjun Duggal
Add the HTTP header manager and add in it your API's header names and values. e.g. Content-type, Accept, etc. That will resolve your issue.
添加 HTTP 标头管理器并将您的 API 的标头名称和值添加到其中。例如内容类型、接受等。这将解决您的问题。
回答by Dulith De Costa
If you are using AJAXjQueryRequest this is a must to apply. If not it will throw you 415Error.
如果您正在使用AJAXjQuery请求，这是必须申请的。如果不是，它会抛出你的415错误。
dataType: "json",
contentType:'application/json'
