Android 开发工具类 29_sendPOSTRequest

sendPOSTRequest 业务类

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;
    }
}