我正在使用 JSON 请求调用 REST 服务,它以HTTP 415 "Unsupported Media Type"错误响应。
HTTP 415 "Unsupported Media Type"
请求内容类型设置为("Content-Type", "application/json; charset=utf8")。
("Content-Type", "application/json; charset=utf8")
如果我不在请求中包含 JSON 对象,它工作正常。我正在使用google-gson-2.2.4JSON 库。
google-gson-2.2.4
我尝试使用几个不同的库,但没有任何区别。
有人可以帮我解决这个问题吗?
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.example.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; } }
的值为requestJson.toString():
requestJson.toString()
{"type":"arl","action":"remove","domain":"staging","objects":"http://www.example.com"}
不确定原因,但删除行charset=utf8解决 con.setRequestProperty("Content-Type", "application/json; charset=utf8")了问题。
charset=utf8
con.setRequestProperty("Content-Type", "application/json; charset=utf8")