使用java.net.URL实现Post数据

实现：利用URL访问URL并传递参数，然后获取返回结果。

可用于模拟http访问。

 

package test;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

import java.net.URL;
import java.net.URLConnection;

public class JavaPostTest {

	public String post() throws Exception {
		URL url = new URL("http://www.renren.com/PLogin.do");
		URLConnection conn = url.openConnection();
		conn.setDoOutput(true);

		OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream());

		writer.write("email=[e-mail]&password=123");
		writer.flush();
		writer.close();

		InputStreamReader reder = new InputStreamReader(conn.getInputStream(), "utf-8");

		BufferedReader breader = new BufferedReader(reder);

		BufferedWriter w = new BufferedWriter(new FileWriter("d:/1.txt"));

		String content = null;
		String result = null;
		while ((content = breader.readLine()) != null) {
			result += content + "\n";
		}
		w.write(result);
		w.flush();
		w.close();
		return result;

	}

	public static void main(String[] args) throws Exception {
		JavaPostTest post = new JavaPostTest();
		String aa = post.post();
		String bb = new String(aa.getBytes("utf-8"));
		System.out.println(bb);
	}
}