JAVA利用HttpClient进行POST请求(HTTPS)实例

最近，需要对客户的接口做一个包装，然后供自己公司别的系统调用，客户接口是用HTTP URL实现的，我想用HttpClient包进行请求，同时由于请求的URL是HTTPS的，为了避免需要证书，所以用一个类继承DefaultHttpClient类，忽略校验过程。

1.写一个SSLClient类，继承至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;  
//用于进行Https请求的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.写一个利用HttpClient发送post请求的类

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;  
/* 
 * 利用HttpClient进行post请求的工具类 
 */  
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);  
      //设置参数  
      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.调用post请求的测试代码

package com.pcmall.service.sale.miaomore.impl; 
 
import java.util.HashMap;  
import java.util.Map;  
//对接口进行测试  
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();  
  }  
}  

刚开始不是很明白BasicNameValuePair的用法，后来慢慢摸索了一下，发现BasicNameValuePair是存储键值对的类，当添加新的key和value值，它会自动给装换成http的格式，=和&符号，比如https://xxx.xxx.xxx/xxx/xxxx/delivery?delivery_code=DQZZSM2A&timestamp=1479198840000&sign=F209C33FEADE99F93E8970FA0F68D3EB，我们都不用自己进行拼接和匹配了，个人觉得它用起来还是挺方便而且准确度也高，希望可以帮助到大家！

以上就是小编为大家带来的JAVA利用HttpClient进行POST请求(HTTPS)实例全部内容了，希望大家多多支持呐喊教程~