uploaduserinformationbypostservice.java

android4.0网络编程详解

package com.wangjialin.internet.userInformation.service;

import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;

public class UploadUserInformationByPostService {
	public static boolean save(String title, String length) throws Exception{
		String path = "http://192.168.1.100:8080/ServerForPOSTMethod/ServletForPOSTMethod";
		Map<String, String> params = new HashMap<String, String>();
		params.put("name", title);
		params.put("age", length);
		return sendPOSTRequest(path, params, "UTF-8");
	}

	/**
	 * 发送POST请求
	 * @param path 请求路径
	 * @param params 请求参数
	 * @return
	 */
	private static boolean sendPOSTRequest(String path, Map<String, String> params, String encoding) throws Exception{
		//  title=liming&length=30
		StringBuilder sb = new StringBuilder();
		if(params!=null && !params.isEmpty()){
			for(Map.Entry<String, String> entry : params.entrySet()){
				sb.append(entry.getKey()).append("=");
				sb.append(URLEncoder.encode(entry.getValue(), encoding));
				sb.append("&");
			}
			sb.deleteCharAt(sb.length() - 1);
		}
		byte[] data = sb.toString().getBytes();
		
		HttpURLConnection conn = (HttpURLConnection) new URL(path).openConnection();
		conn.setConnectTimeout(5000);
		conn.setRequestMethod("POST");
		conn.setDoOutput(true);//允许对外传输数据
		conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
		conn.setRequestProperty("Content-Length", data.length+"");
		OutputStream outStream = conn.getOutputStream();
		outStream.write(data);
		outStream.flush();
		if(conn.getResponseCode() == 200){
			return true;
		}
		return false;
	}
}