JAVA makes POST requests for of HTTPS instances using HttpClient

Recently, we need to make a wrapper for the customer's interface, and then make it available for other system calls of our company. The customer interface is implemented with HTTP URL. I want to make a request with HttpClient package.

1. Write an SSLClient class and inherit to HttpClient

package com.pcmall.service.sale.miaomore.impl; 
 
import java.security.cert.CertificateException;  
import java.security.cert.X509Certificate;  
import javax.net.ssl.SSLContext;  
import javax.net.ssl.TrustManager;  
import javax.net.ssl.X509TrustManager;  
import org.apache.http.conn.ClientConnectionManager;  
import org.apache.http.conn.scheme.Scheme;  
import org.apache.http.conn.scheme.SchemeRegistry;  
import org.apache.http.conn.ssl.SSLSocketFactory;  
import org.apache.http.impl.client.DefaultHttpClient;  
// Used for Https The request of HttpClient  
public class SSLClient extends DefaultHttpClient{  
  public SSLClient() throws Exception{  
    super();  
    SSLContext ctx = SSLContext.getInstance("TLS");  
    X509TrustManager tm = new X509TrustManager() {  
        @Override  
        public void checkClientTrusted(X509Certificate[] chain,  
            String authType) throws CertificateException {  
        }  
        @Override  
        public void checkServerTrusted(X509Certificate[] chain,  
            String authType) throws CertificateException {  
        }  
        @Override  
        public X509Certificate[] getAcceptedIssuers() {  
          return null;  
        }  
    };  
    ctx.init(null, new TrustManager[]{tm}, null);  
    SSLSocketFactory ssf = new SSLSocketFactory(ctx,SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);  
    ClientConnectionManager ccm = this.getConnectionManager();  
    SchemeRegistry sr = ccm.getSchemeRegistry();  
    sr.register(new Scheme("https", 443, ssf));  
  }  
}  

2. Write a class that sends an post request using HttpClient

package com.pcmall.service.sale.miaomore.impl; 
 
import java.util.ArrayList;  
import java.util.Iterator;  
import java.util.List;  
import java.util.Map;  
import java.util.Map.Entry;  
import org.apache.http.HttpEntity;  
import org.apache.http.HttpResponse;  
import org.apache.http.NameValuePair;  
import org.apache.http.client.HttpClient;  
import org.apache.http.client.entity.UrlEncodedFormEntity;  
import org.apache.http.client.methods.HttpPost;  
import org.apache.http.message.BasicNameValuePair;  
import org.apache.http.util.EntityUtils;  
/* 
 *  using HttpClient for post Requested utility class  
 */  
public class HttpClientUtil {  
  public String doPost(String url,Map<String,String> map,String charset){  
    HttpClient httpClient = null;  
    HttpPost httpPost = null;  
    String result = null;  
    try{  
      httpClient = new SSLClient();  
      httpPost = new HttpPost(url);  
      // Set the parameters   
      List<NameValuePair> list = new ArrayList<NameValuePair>();  
      Iterator iterator = map.entrySet().iterator();  
      while(iterator.hasNext()){  
        Entry<String,String> elem = (Entry<String, String>) iterator.next();  
        list.add(new BasicNameValuePair(elem.getKey(),elem.getValue()));  
      }  
      if(list.size() > 0){  
        UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list,charset);  
        httpPost.setEntity(entity);  
      }  
      HttpResponse response = httpClient.execute(httpPost);  
      if(response != null){  
        HttpEntity resEntity = response.getEntity();  
        if(resEntity != null){  
          result = EntityUtils.toString(resEntity,charset);  
        }  
      }  
    }catch(Exception ex){  
      ex.printStackTrace();  
    }  
    return result;  
  }  
}  

3. Call the test code requested by post

package com.pcmall.service.sale.miaomore.impl; 
 
import java.util.HashMap;  
import java.util.Map;  
// Test the interface   
public class TestMain {  
  private String url = "https://xxx.xxx.xxx/";  
  private String charset = "utf-8";  
  private HttpClientUtil httpClientUtil = null;  
    
  public TestMain(){  
    httpClientUtil = new HttpClientUtil();  
  }  
    
  public void test(){  
    String httpOrgCreateTest = url + "xxx/xxx/delivery";  
    Map<String,String> createMap = new HashMap<String,String>();  
    createMap.put("delivery_code","1D1QZ222Z22SM21A");  
    createMap.put("timestamp","1479198840000");  
    createMap.put("sign","F2109C333F3EADE929F932E89703FA0F683D43EB");  
    String httpOrgCreateTestRtn = httpClientUtil.doPost(httpOrgCreateTest,createMap,charset);  
    System.out.println("result:"+httpOrgCreateTestRtn);  
  }  
    
  public static void main(String[] args){  
    TestMain main = new TestMain();  
    main.test();  
  }  
}  

Is not very understand BasicNameValuePair usage at first, then slowly groping under 1, find BasicNameValuePair is stored key/value pair of classes, when adding new key and value value, it will automatically to pack into http format, = and & symbols, such as https: / / xxx xxx. xxx/xxx/xxxx/delivery & # 63; delivery_code = DQZZSM2A & timestamp = 1479198840000 & sign = F209C33FEADE99F93E8970FA0F68D3EB, we all need not oneself splicing and matching, personal think it's very convenient to use and the accuracy is high, hope you can help to you!