JAVA利用HttpClient进行POST请求(HTTPS)实例_JAVA教程

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，希望大家多多支持服务器之家~