JAVA利用HttpClient进行POST请求（HTTPS）

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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

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HttpClientpublic 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

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

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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