JAVA利用HttpClient進行POST請求(HTTPS)執行個體_java

最近，需要對客戶的介面做一個封裝，然後供自己公司別的系統調用，客戶介面是用HTTP URL實現的，我想用HttpClient包進行請求，同時由於請求的URL是HTTPS的，為了避免需要認證，所以用一個類繼承DefaultHttpClient類，忽略校正過程。

1.寫一個SSLClient類，繼承至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;  //用於進行Https請求的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.寫一個利用HttpClient發送post請求的類

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進行post請求的工具類  */  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);        //設定參數        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.調用post請求的測試代碼

package com.pcmall.service.sale.miaomore.impl;  import java.util.HashMap;  import java.util.Map;  //對介面進行測試  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();    }  }  

剛開始不是很明白BasicNameValuePair的用法，後來慢慢摸索了一下，發現BasicNameValuePair是儲存索引值對的類，當添加新的key和value值，它會自動給裝換成http的格式，=和&符號，比如https://xxx.xxx.xxx/xxx/xxxx/delivery?delivery_code=DQZZSM2A&timestamp=1479198840000&sign=F209C33FEADE99F93E8970FA0F68D3EB，我們都不用自己進行拼接和匹配了，個人覺得它用起來還是挺方便而且準確度也高，希望可以協助到大家！

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