发送http请求 Java.net

发送http请求的例子

package com.jrt.common;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;

public class Http {
	public static String post(String url, String param) throws IOException {

		URL reqUrl = new URL(url);
		final HttpURLConnection connection = (HttpURLConnection) reqUrl
				.openConnection();
		connection.setDoOutput(true);
		connection.setRequestMethod("POST");
		connection.setConnectTimeout(300 * 1000);
		connection.setReadTimeout(300 * 1000);
		OutputStreamWriter reqOut = null;
		if (param != null) {
			reqOut = new OutputStreamWriter(connection.getOutputStream());
			reqOut.write(param);
			reqOut.flush();
		}
		int charCount = -1;
		InputStream in = connection.getInputStream();
		BufferedReader br = new BufferedReader(new InputStreamReader(in, "GBK"));
		StringBuffer responseMessage = new StringBuffer();
		while ((charCount = br.read()) != -1) {
			responseMessage.append((char) charCount);
		}
		in.close();
		if (reqOut != null)
			reqOut.close();
		return responseMessage.toString();
	}
}