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×tamp=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，希望大家多多支持武林网~