HttpURLConnection使用

import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class Test {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        URL url;
        try {
            url = new URL("");
            HttpURLConnection httpURLConnection=(HttpURLConnection)url.openConnection();

            //设置连接超时
            httpURLConnection.setConnectTimeout(1000);

            //设置是否向httpUrlConnection输出，因为这个是post请求，参数要放在
            //http正文内，因此需要设为true, 默认情况下是false;
            httpURLConnection.setDoOutput(true);

            //不使用cache
            httpURLConnection.setUseCaches(false);

            // 设定传送的内容类型是可序列化的java对象
            // (如果不设此项,在传送序列化对象时,当WEB服务默认的不是这种类型时可能抛java.io.EOFException)
            httpURLConnection.setRequestProperty("Content-type", "application/x-java-serialized-object");

            //设置请求方式
            httpURLConnection.setRequestMethod("POST");

            httpURLConnection.connect();

            //上面的connect只是建立了一个link，下面的getInputStream才开始真正的向服务端发送数据
            InputStream inputStream=httpURLConnection.getInputStream();

            //接收服务器返回的数据
            byte[] buffer=new byte[inputStream.available()];
            inputStream.read(buffer);

            String msg=new String(buffer);
            System.out.println(msg);
            httpURLConnection.disconnect();
            inputStream.close();

        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }


    }

}