Android 开发工具类 29_sendPOSTRequest

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://192.168.1.103:8080/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;
}
}