最近在测试通过http delete method传参数调用服务端方法，遇到了java.net.ProtocolException: DELETE does not support writing

 

try {				url = new URL(path);				HttpURLConnection httpCon = (HttpURLConnection) url.openConnection();				httpCon.setDoOutput(true);				httpCon.setRequestMethod(method);				OutputStreamWriter out = new OutputStreamWriter(						httpCon.getOutputStream());				out.write(new Gson().toJson(params));				out.close();							String urlStringsss = convertStreamToString(httpCon.getInputStream());				InfoPrinter.printLog(convertStreamToString(httpCon.getInputStream()));			} catch (MalformedURLException e) {				// TODO Auto-generated catch block				e.printStackTrace();			} catch (IOException e) {				// TODO Auto-generated catch block				e.printStackTrace();			}

　　执行时捕捉到

java.net.ProtocolException: DELETE does not support writing

后来在万能的google帮助下，最终在stackoverflow上找到了答案，先来看国外的一位Coder怎么说

I do not believe that HTTP DELETE takes input - I believe it acts like a GET variant.The implementation provided by HTTP Client seems to support this conjecture as well.If you are looking to provide a delete with a body, you /might/ want to consider using a POST to a location that accepts a body.But in answer to your question, no, delete does not accept a body. You can add query parameters but not a body.

HTTP DELETE 不支持通过output来write参数，只能像GET方法一样通过url paramter来传递参数，否则会报标题上遇到的错误。