JAVA利用HttpClient进行POST请求(HTTPS)

xiaoxiao2021-02-28  7

目前,要为另一个项目提供接口,接口是用HTTP URL实现的,最初的想法是另一个项目用JQuery post进行请求。

但是,很可能另一个项目是部署在别的机器上,那么就存在跨域问题,而JQuery的post请求是不允许跨域的。

这时,就只能够用HttpClient包进行请求了,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

[java] view plain copy print ? 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(nullnew 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));      }  }   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

[java] view plain copy print ? 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;      }  }   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

[java] view plain copy print ? import java.util.HashMap;  import java.util.Map;  //对接口进行测试  public class TestMain {      private String url = “https://192.168.1.101/”;      private String charset = “utf-8”;      private HttpClientUtil httpClientUtil = null;            public TestMain(){          httpClientUtil = new HttpClientUtil();      }            public void test(){          String httpOrgCreateTest = url + ”httpOrg/create”;          Map<String,String> createMap = new HashMap<String,String>();          createMap.put(”authuser”,“*****”);          createMap.put(”authpass”,“*****”);          createMap.put(”orgkey”,“****”);          createMap.put(”orgname”,“****”);          String httpOrgCreateTestRtn = httpClientUtil.doPost(httpOrgCreateTest,createMap,charset);          System.out.println(”result:”+httpOrgCreateTestRtn);      }            public static void main(String[] args){          TestMain main = new TestMain();          main.test();      }  }   import java.util.HashMap; import java.util.Map; //对接口进行测试 public class TestMain { private String url = "https://192.168.1.101/"; private String charset = "utf-8"; private HttpClientUtil httpClientUtil = null; public TestMain(){ httpClientUtil = new HttpClientUtil(); } public void test(){ String httpOrgCreateTest = url + "httpOrg/create"; Map<String,String> createMap = new HashMap<String,String>(); createMap.put("authuser","*****"); createMap.put("authpass","*****"); createMap.put("orgkey","****"); createMap.put("orgname","****"); String httpOrgCreateTestRtn = httpClientUtil.doPost(httpOrgCreateTest,createMap,charset); System.out.println("result:"+httpOrgCreateTestRtn); } public static void main(String[] args){ TestMain main = new TestMain(); main.test(); } } httpClient4.2的jar包下载路径:http://download.csdn.net/detail/hqmryang/4582440#comment
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