Java–Http向服务端提交字条串数据

package com.joye3g.http;import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;import android.util.Log;public class UploadFile {
// 上传代码，第一个参数，为要使用的URL，第二个参数，为提交的内容
public static String post(String actionUrl, String jsonData) throws IOException {URL uri = new URL(actionUrl);
HttpURLConnection conn = (HttpURLConnection) uri.openConnection();
conn.setReadTimeout(30 * 1000);
conn.setRequestMethod("POST"); // Post方式
conn.setDoOutput(true);// 允许输出
conn.setRequestProperty("connection", "keep-alive"); //客户端到服务器端的连接持续有效
conn.setRequestProperty("Content-Type", "application/x-javascript; charset=UTF-8");
DataOutputStream outStream = new DataOutputStream(conn.getOutputStream());
outStream.write(jsonData.getBytes());
outStream.flush();
// 得到响应码
String result = "-1";  //-1请示请求失败
if(conn.getResponseCode()==200){
InputStream in = conn.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(in));
result = br.readLine();
Log.e("System.out.println", result);
br.close();
in.close();
}
outStream.close();
conn.disconnect();
return result;
}
}