我正在用JSON请求调用REST服务,它给出了Http 415“不支持的媒体类型”错误。
请求内容类型设置为(“ Content-Type”,“ application / json; charset = utf8”)。
如果我在请求中不包含Json对象,则效果很好。我正在使用json的google-gson-2.2.4库。
我尝试使用几个不同的库,但这没什么区别。
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.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; } }
requestJson.toString的值为:
{“ type”:“ arl”,“ action”:“删除”,“ domain”:“ staging”,“ objects:” http://www.abc.com “}
不确定原因,但是charset=utf8从中 删除行con.setRequestProperty("Content-Type", "application/json; charset=utf8")解决了该问题。
charset=utf8
con.setRequestProperty("Content-Type", "application/json; charset=utf8")