使用http的post方式与网络交互通信

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.io.OutputStreamWriter;

import java.net.HttpURLConnection;

import java.net.MalformedURLException;

import java.net.URL;

class ReadByPost extends Thread {
@Override
public void run() {
try {
URL url = new URL("http://fanyi.youdao.com/openapi.do");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.addRequestProperty("encoding", "UTF-8");
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setRequestMethod("POST");

OutputStream oStream = connection.getOutputStream();
OutputStreamWriter oWriter = new OutputStreamWriter(oStream);
BufferedWriter bWriter = new BufferedWriter(oWriter);

bWriter.write("keyfrom=IOT-HttpGet-test&key=1093201680&type=data&doctype=xml&version=1.1&q=welcome");
bWriter.flush();

InputStream iStream = connection.getInputStream();
InputStreamReader iReader = new InputStreamReader(iStream);
BufferedReader bReader = new BufferedReader(iReader);

String line;
StringBuilder builder = new StringBuilder();

while ((line = bReader.readLine()) != null) {
builder.append(line);
}

bWriter.close();
oWriter.close();
oStream.close();

bReader.close();
iReader.close();
iStream.close();

System.out.println(builder);
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}

}

public class TestHttpPost {

public static void main(String[] args) {

new ReadByPost().start();
}

}