工具类--HttpUtil

工具类–HttpUtil

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.http.HttpEntity;
import org.apache.http.HttpStatus;
import org.apache.http.StatusLine;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.junit.Test;

import com.core.config.JsonUtil;
import com.core.config.pay.PayDigestUtil;

/**
 * HttpUtil-工具类
 * @author yuelong
 *
 */

public class HttpUtil {
	 
/**
 * post请求
 */
@Test
public static String doPost(String uri,Map<String,Object> map) {
	  
    try {
        CloseableHttpClient client = null;
        CloseableHttpResponse response = null;
        try {
            // 创建一个提交数据的容器
            List<BasicNameValuePair> parames = new ArrayList<>();
            for(String key : map.keySet()){
 			   String value = map.get(key).toString();
 			  parames.add(new BasicNameValuePair(key,value));
 			  }
           
            HttpPost httpPost = new HttpPost(uri);
            httpPost.setEntity(new UrlEncodedFormEntity(parames, "UTF-8"));

            client = HttpClients.createDefault();
            response = client.execute(httpPost);
            HttpEntity entity = response.getEntity();
            String result = EntityUtils.toString(entity);
            System.out.println(">>>>>result》》》"+result+"!!!!!");
            return  result;
        } finally {
            if (response != null) {
                response.close();
            }
            if (client != null) {
                client.close();
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
        return e.toString();
    }
	
}


/**
 * post请求（Content-Type=application/x-www-form-urlencoded），使用原生HttpURLConnection实现post请求
 * @param url
 * @param parameterData
 * @return
 * @throws Exception
 */
public static String doPost1(String url,String parameterData) throws Exception {
	
    
    URL localURL = new URL(url);
    URLConnection connection = localURL.openConnection();
    HttpURLConnection httpURLConnection = (HttpURLConnection)connection;
    
    httpURLConnection.setDoOutput(true);
    httpURLConnection.setRequestMethod("POST");
    httpURLConnection.setRequestProperty("Accept-Charset", "utf-8");
    httpURLConnection.setConnectTimeout(1000);
    httpURLConnection.setReadTimeout(6000);

    httpURLConnection.setRequestProperty("Content-Type", "application/json");
    httpURLConnection.setRequestProperty("Content-Length", String.valueOf(parameterData.length()));
    
    OutputStream outputStream = null;
    OutputStreamWriter outputStreamWriter = null;
    InputStream inputStream = null;
    InputStreamReader inputStreamReader = null;
    BufferedReader reader = null;
    StringBuffer resultBuffer = new StringBuffer();
    String tempLine = null;
    
    try {
        outputStream = httpURLConnection.getOutputStream();
        outputStreamWriter = new OutputStreamWriter(outputStream);
        
        outputStreamWriter.write(parameterData.toString());
        outputStreamWriter.flush();
        
        if (httpURLConnection.getResponseCode() >= 300) {
            throw new Exception("HTTP Request is not success, Response code is " + httpURLConnection.getResponseCode());
        }
        
        inputStream = httpURLConnection.getInputStream();
        inputStreamReader = new InputStreamReader(inputStream);
        reader = new BufferedReader(inputStreamReader);
        
        while ((tempLine = reader.readLine()) != null) {
            resultBuffer.append(tempLine);
        }
        
    } finally {
        
        if (outputStreamWriter != null) {
            outputStreamWriter.close();
        }
        
        if (outputStream != null) {
            outputStream.close();
        }
        
        if (reader != null) {
            reader.close();
        }
        
        if (inputStreamReader != null) {
            inputStreamReader.close();
        }
        
        if (inputStream != null) {
            inputStream.close();
        }
        
    }

    return resultBuffer.toString();
}


/**
 * post请求（用于请求json格式的参数，Content-Type=application/x-www-form-urlencoded），使用CloseableHttpClient实现post请求
 * @param url
 * @param params
 * @return
 */
public static String doPost(String url, String params) throws Exception {
	
	CloseableHttpClient httpclient = HttpClients.createDefault();
	HttpPost httpPost = new HttpPost(url);// 创建httpPost   
		httpPost.setHeader("Accept", "*/*"); 
		httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded");
		String charSet = "UTF-8";
		StringEntity entity = new StringEntity(params, charSet);
		httpPost.setEntity(entity);        
    CloseableHttpResponse response = null;
    try {
    		response = httpclient.execute(httpPost);
        StatusLine status = response.getStatusLine();
        int state = status.getStatusCode();
        if (state == HttpStatus.SC_OK) {
        	HttpEntity responseEntity = response.getEntity();
        	String jsonString = EntityUtils.toString(responseEntity);
        	return jsonString;
        }
        else{
			 System.err.println("请求返回:"+state+"("+url+")");
		}
    }
    finally {
        if (response != null) {
            try {
                response.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        try {
			httpclient.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
    }
    return null;
}


/**
 * post请求（用于请求json格式的参数，Content-Type=application/json），使用CloseableHttpClient实现post请求）
 * @param url
 * @param params
 * @return
 */
public static String doPost2(String url, String params) throws Exception {
	
	CloseableHttpClient httpclient = HttpClients.createDefault();
	HttpPost httpPost = new HttpPost(url);// 创建httpPost   
	httpPost.setHeader("Accept", "application/json"); 
	httpPost.setHeader("Content-Type", "application/json");
	String charSet = "UTF-8";
	StringEntity entity = new StringEntity(params, charSet);
	httpPost.setEntity(entity);        
    CloseableHttpResponse response = null;
    try {
    		response = httpclient.execute(httpPost);
        StatusLine status = response.getStatusLine();
        int state = status.getStatusCode();
        if (state == HttpStatus.SC_OK) {
        	HttpEntity responseEntity = response.getEntity();
        	String jsonString = EntityUtils.toString(responseEntity);
        	return jsonString;
        }
        else{
			 System.err.println("请求返回:"+state+"("+url+")");
		}
    }
    finally {
        if (response != null) {
            try {
                response.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        try {
			httpclient.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
    }
    return "请求失败";
}


public static void main(String[] args) throws Exception {
	//盛京银行账户检查参数
	Map<String, Object> paramMap = new HashMap<String, Object>();
	paramMap.put("cardNo", "6231080303421812"); //盛京银行卡号
	paramMap.put("limitation", "7"); //拉取乘车码账户最低金额，gateWayApp服务传入
	
	//签名
	String reqSign = PayDigestUtil.shengjingGetSign(paramMap);
	paramMap.put("sign", reqSign);
	
	String result = HttpUtil.doPost1("http://16.7.65.75:8888/sjtapp/queryAccount", JsonUtil.toJson(paramMap));
	System.out.println(result);
}	
}