Java工具类_模拟HTTP POST请求

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

public class HttpPostTest {

    public static void main(String[] args) throws Exception {

        //请求数据【加密】
        String netPoint = "JTNDJTNGeG1sK3ZQyUyRmh0dHBBcGklM0UlMEE=";

        //Xml或json格式  netPoint = "{ \"userName\": \"01404673\" }"; netPoint = "<userName>01404673</userName>";

        //请求地址[ 本地 ]
        String strurl = "http://127.0.0.1:8080/hop/order/getForwardConfirmToAccountCenter?app_key=1201&secret=927666f2";

        URL url = new URL(strurl);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("POST");
        conn.setConnectTimeout(5 * 1000);//设置超时的时间
        conn.setDoInput(true);
        conn.setDoOutput(true);//如果通过post提交数据，必须设置允许对外输出数据
        conn.setRequestProperty("Content-Type", "text/xml; charset=UTF-8");
        conn.setRequestProperty("Content-Length", String.valueOf(netPoint.length()));
        conn.addRequestProperty("Authorization", "Basic ZWhhaWVyMjAxMTplaGFpZXImMmFiKihf");
        conn.connect();
        DataOutputStream out = new DataOutputStream(conn.getOutputStream());
        out.write(netPoint.getBytes("UTF-8"));//写入请求的字符串
        out.flush();
        out.close();
        //请求返回的状态
        if (conn.getResponseCode() == 200) {
            //请求返回的数据
            byte[] datas = readInputStream(conn.getInputStream());
            //转成字符串
            String responseMsg = new String(datas, "utf-8");
            System.out.println("返回数据：\n" + responseMsg);

			//将返回数据写入文件
            //            File dest = new File("D:\\abc.txt");

            //            InputStream is = new ByteArrayInputStream(responseMsg.getBytes());
            //            OutputStream os = new FileOutputStream(dest);

            //            byte[] flush = new byte[1024];
            //            int len = 0;
            //
            //            while (-1 != (len = is.read(flush))) {
            //                os.write(flush, 0, len);
            //            }
            //
            //            os.flush();
            //            os.close();
            //            is.close();

        } else {
            System.out.println("请求失败：\n code：" + conn.getResponseCode() + "\n msg："
                               + conn.getResponseMessage());
        }
        //关闭连接
        conn.disconnect();
    }

    private static byte[] readInputStream(InputStream inStream) throws Exception {
        ByteArrayOutputStream outStream = new ByteArrayOutputStream();
        try {
            byte[] buffer = new byte[1024];
            int len = 0;
            while ((len = inStream.read(buffer)) != -1) {
                outStream.write(buffer, 0, len);
            }
            byte[] data = outStream.toByteArray();//二进制数据
            return data;
        } finally {
            outStream.close();
            inStream.close();
        }
    }

}