Description
Reads data from the data reader and posts it to a server via POST request.
License
Open Source License
Parameter
| Parameter | Description |
|---|
| data | Data to be sent |
| endpoint | The endpoint to which the data has to be POSTed |
| output | Output |
Exception
| Parameter | Description |
|---|
| Exception | If an error occurs while POSTing |
Declaration
public static void sendPostRequest(Reader data, URL endpoint, Writer output) throws Exception
Method Source Code
//package com.java2s;
/*/*from w w w . ja va2s . c o m*/
*
* Copyright (c) 2016, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. licenses this file to you under the Apache License,
* Version 2.0 (the "License"); you may not use this file except
* in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Reader;
import java.io.Writer;
import java.net.HttpURLConnection;
import java.net.ProtocolException;
import java.net.URL;
public class Main {
/**
* Reads data from the data reader and posts it to a server via POST request. data - The data you want to send
* endpoint - The server's address output - writes the server's response to output
*
* @param data Data to be sent
* @param endpoint The endpoint to which the data has to be POSTed
* @param output Output
* @throws Exception If an error occurs while POSTing
*/
public static void sendPostRequest(Reader data, URL endpoint, Writer output) throws Exception {
HttpURLConnection urlConnection = null;
try {
urlConnection = (HttpURLConnection) endpoint.openConnection();
try {
urlConnection.setRequestMethod("POST");
} catch (ProtocolException e) {
throw new Exception("Shouldn't happen: HttpURLConnection doesn't support POST??", e);
}
urlConnection.setDoOutput(true);
urlConnection.setDoInput(true);
urlConnection.setUseCaches(false);
urlConnection.setAllowUserInteraction(false);
urlConnection.setRequestProperty("Content-type", "text/xml; charset=" + "UTF-8");
OutputStream out = urlConnection.getOutputStream();
try {
Writer writer = new OutputStreamWriter(out, "UTF-8");
pipe(data, writer);
writer.close();
} catch (IOException e) {
throw new Exception("IOException while posting data", e);
} finally {
if (out != null) {
out.close();
}
}
InputStream in = urlConnection.getInputStream();
try {
Reader reader = new InputStreamReader(in);
pipe(reader, output);
reader.close();
} catch (IOException e) {
throw new Exception("IOException while reading response", e);
} finally {
if (in != null) {
in.close();
}
}
} catch (IOException e) {
throw new Exception("Connection error (is server running at " + endpoint + " ?): " + e);
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
}
}
/**
* Reads data from the data reader and posts it to a server via POST request. data - The data you want to send
* endpoint - The server's address output - writes the server's response to output contentType content type of the
* message
*
* @param data Data to be sent
* @param endpoint The endpoint to which the data has to be POSTed
* @param output Output
* @param contentType content type of the message
* @throws Exception If an error occurs while POSTing
*/
public static void sendPostRequest(Reader data, URL endpoint, Writer output, String contentType)
throws Exception {
HttpURLConnection urlConnection = null;
try {
urlConnection = (HttpURLConnection) endpoint.openConnection();
try {
urlConnection.setRequestMethod("POST");
} catch (ProtocolException e) {
throw new Exception("Shouldn't happen: HttpURLConnection doesn't support POST??", e);
}
urlConnection.setDoOutput(true);
urlConnection.setDoInput(true);
urlConnection.setUseCaches(false);
urlConnection.setAllowUserInteraction(false);
urlConnection.setRequestProperty("Content-type", contentType);
OutputStream out = urlConnection.getOutputStream();
try {
Writer writer = new OutputStreamWriter(out, "UTF-8");
pipe(data, writer);
writer.close();
} catch (IOException e) {
throw new Exception("IOException while posting data", e);
} finally {
if (out != null) {
out.close();
}
}
InputStream in = urlConnection.getInputStream();
try {
Reader reader = new InputStreamReader(in);
pipe(reader, output);
reader.close();
} catch (IOException e) {
throw new Exception("IOException while reading response", e);
} finally {
if (in != null) {
in.close();
}
}
} catch (IOException e) {
throw new Exception("Connection error (is server running at " + endpoint + " ?): " + e);
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
}
}
/**
* Pipes everything from the reader to the writer via a buffer
*
* @param reader Reader
* @param writer Writer
* @throws java.io.IOException If piping fails
*/
private static void pipe(Reader reader, Writer writer) throws IOException {
char[] buf = new char[1024];
int read;
while ((read = reader.read(buf)) >= 0) {
writer.write(buf, 0, read);
}
writer.flush();
}
}
Related
- sendJsonData(final HttpURLConnection connection, final String data)
- sendPost(String link, String urlParameters)
- sendPost(String url, String data)
- sendPost(String url, String urlParameters)
- sendPost(String webURL, HashMap postOptions)
- sendPostRequest(Reader data, URL endpoint, Writer output)
- sendPostRequest(String requestURL, Map params)
- URLPost(String strUrl, Map map)
- writeBody(HttpURLConnection connection, String body)