在HttpURLConnection中发送PUT,DELETE HTTP请求 [英] Send PUT, DELETE HTTP request in HttpURLConnection
本文介绍了在HttpURLConnection中发送PUT,DELETE HTTP请求的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我使用java下面的代码创建了Web服务调用。现在我需要进行删除和执行操作。
I have created web service call using java below code. Now I need to make delete and put operations to be perform.
URL url = new URL("http://example.com/questions");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setDoOutput(true);
conn.setRequestMethod( "POST" );
conn.setRequestProperty("Content-Type", "application/json");
OutputStream os = conn.getOutputStream();
os.write(jsonBody.getBytes());
os.flush();
当我添加以下代码来执行DELETE操作时,它会出错:
When I add below code to perform DELETE action it gives errors saying:
java.net.ProtocolException:HTTP方法DELETE不支持输出。
java.net.ProtocolException: HTTP method DELETE doesn't support output.
conn.setRequestMethod( "DELETE" );
那么如何执行删除和放置请求?
So how to perform delete and put requests?
推荐答案
PUT
示例使用 HttpURLConnection
:
URL url = null;
try {
url = new URL("http://localhost:8080/putservice");
} catch (MalformedURLException exception) {
exception.printStackTrace();
}
HttpURLConnection httpURLConnection = null;
DataOutputStream dataOutputStream = null;
try {
httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
httpURLConnection.setRequestMethod("PUT");
httpURLConnection.setDoInput(true);
httpURLConnection.setDoOutput(true);
dataOutputStream = new DataOutputStream(httpURLConnection.getOutputStream());
dataOutputStream.write("hello");
} catch (IOException exception) {
exception.printStackTrace();
} finally {
if (dataOutputStream != null) {
try {
dataOutputStream.flush();
dataOutputStream.close();
} catch (IOException exception) {
exception.printStackTrace();
}
}
if (httpsURLConnection != null) {
httpsURLConnection.disconnect();
}
}
DELETE
示例使用 HttpURLConnection
:
URL url = null;
try {
url = new URL("http://localhost:8080/deleteservice");
} catch (MalformedURLException exception) {
exception.printStackTrace();
}
HttpURLConnection httpURLConnection = null;
try {
httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");
httpURLConnection.setRequestMethod("DELETE");
System.out.println(httpURLConnection.getResponseCode());
} catch (IOException exception) {
exception.printStackTrace();
} finally {
if (httpURLConnection != null) {
httpURLConnection.disconnect();
}
}
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