HTTP调用

POST通用

 

package com.hongware.uitl;

import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

/**
 * HTTP API调用辅助类
 * 
 * @author leo
 *
 */
public class HttpApiUitl {
	
	
	public static String httpPost(String requestUrl,Map params,String data,String charset,String contentType,int conTimeout,int readTimeout){
		URL url = null;
        try {
            if(params!=null&&!params.isEmpty()) {
            	StringBuffer sb = new StringBuffer(requestUrl).append("?");
            	Set keys = params.keySet();
            	for(String key : keys) {
            		Object value = params.get(key);
            		sb.append(key).append("=").append(value).append("&");
            	}
            	requestUrl = sb.substring(0,sb.length()-1);
            }
            url = new URL(requestUrl);
            HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
            httpURLConnection.setRequestMethod("POST");// 提交模式
            httpURLConnection.setConnectTimeout(conTimeout);//连接超时 单位毫秒
            httpURLConnection.setReadTimeout(readTimeout);//读取超时 单位毫秒
            httpURLConnection.setRequestProperty("Connection", "Keep-Alive");
            httpURLConnection.setRequestProperty("Charset", charset);
            // 设置文件类型:
            httpURLConnection.setRequestProperty("Content-Type",contentType);
            // 发送POST请求必须设置如下两行
            httpURLConnection.setDoOutput(true);
            httpURLConnection.setDoInput(true);
            // 获取URLConnection对象对应的输出流
            PrintWriter printWriter = new PrintWriter(httpURLConnection.getOutputStream());
            // 发送请求参数
            if(data!=null) {
            	printWriter.write(data);//data的参数 流数据
            	// flush输出流的缓冲
            	printWriter.flush();
            }
            //开始获取数据
            BufferedInputStream bis = new BufferedInputStream(httpURLConnection.getInputStream());
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            int len;
            byte[] arr = new byte[1024];
            while((len=bis.read(arr))!= -1){
                bos.write(arr,0,len);
                bos.flush();
            }
            bos.close();
            return bos.toString(charset);
        } catch (Exception e) {
            e.printStackTrace();
            return "error";
        }
	}
	
	public static String httpPost(String requestUrl,Map params){
		return httpPost(requestUrl, params, "我是中国人", "UTF-8", "application/json; charset=UTF-8", 30000, 3000);
	}

	
	public static void main(String[] args) {
		String url = "http://192.168.20.69:9000/login";
		Map params = new HashMap();
		params.put("userId", "test@hongware");
		params.put("userIp", "61.152.234.226");
		params.put("ati", "0000000000");
		
		String resp = HttpApiUitl.httpPost(url, params);
		System.out.println(resp);
	}
	
}