HttpClient向HTTPS地址发送POST请求

HttpClient向HTTPS地址发送POST请求

package com.jadyer.util;

import java.io.IOException;

import java.io.UnsupportedEncodingException;

import java.security.KeyManagementException;

import java.security.NoSuchAlgorithmException;

import java.security.cert.CertificateException;

import java.security.cert.X509Certificate;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import javax.net.ssl.SSLContext;

import javax.net.ssl.TrustManager;

import javax.net.ssl.X509TrustManager;

import org.apache.http.HttpEntity;

import org.apache.http.HttpResponse;

import org.apache.http.NameValuePair;

import org.apache.http.ParseException;

import org.apache.http.client.ClientProtocolException;

import org.apache.http.client.HttpClient;

import org.apache.http.client.entity.UrlEncodedFormEntity;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.conn.scheme.Scheme;

import org.apache.http.conn.ssl.SSLSocketFactory;

import org.apache.http.impl.client.DefaultHttpClient;

import org.apache.http.message.BasicNameValuePair;

import org.apache.http.util.EntityUtils;

/**

* @see =====================================================================================================

* @see 在开发HTTPS应用时，时常会遇到两种情况

* @see 1、要么测试服务器没有有效的SSL证书,客户端连接时就会抛异常

* @see javax.net.ssl.SSLPeerUnverifiedException: peer not authenticated

* @see 2、要么测试服务器有SSL证书,但可能由于各种不知名的原因,它还是会抛一个堆烂码七糟的异常

* @see =====================================================================================================

* @see 由于我们这里使用的是HttpComponents-Client-4.1.2创建的连接，所以，我们就要告诉它使用一个不同的TrustManager

* @see TrustManager是一个用于检查给定的证书是否有效的类

* @see SSL使用的模式是X.509....对于该模式,Java有一个特定的TrustManager,称为X509TrustManager

* @see 所以我们自己创建一个X509TrustManager实例

* @see 而在X509TrustManager实例中，若证书无效，那么TrustManager在它的checkXXX()方法中将抛出CertificateException

* @see 既然我们要接受所有的证书,那么X509TrustManager里面的方法体中不抛出异常就行了

* @see 然后创建一个SSLContext并使用X509TrustManager实例来初始化之

* @see 接着通过SSLContext创建SSLSocketFactory，最后将SSLSocketFactory注册给HttpClient就可以了

* @see =====================================================================================================

* @create Jul 30, 2012 1:11:52 PM

* @author 玄玉(http://blog.csdn/net/jadyer)

*/

public class HttpClientUtil {

public static void main(String[] args)throws Exception{

Map<String, String> params = new HashMap<String, String>();

params.put("TransName", "IQSR");

params.put("Plain", "transId=IQSR~|~originalorderId=2012~|~originalTransAmt= ~|~merURL= ");

params.put("Signature", "9b759887e6ca9d4c24509d22ee4d22494d0dd2dfbdbeaab3545c1acee62eec7");

sendSSLPostRequest("https://www.cebbank.com/per/QueryMerchantEpay.do",
params);

}

/**

* 向HTTPS地址发送POST请求

* @param reqURL 请求地址

* @param params 请求参数

* @return 响应内容

*/

@SuppressWarnings("finally")

public static String sendSSLPostRequest(String reqURL, Map<String, String> params){

long responseLength = 0; //响应长度

String responseContent = null; //响应内容

HttpClient httpClient = new DefaultHttpClient(); //创建默认的httpClient实例

X509TrustManager xtm = new X509TrustManager(){ //创建TrustManager

public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {}

public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {}

public X509Certificate[] getAcceptedIssuers() { return null; }

};

try {

//TLS1.0与SSL3.0基本上没有太大的差别，可粗略理解为TLS是SSL的继承者，但它们使用的是相同的SSLContext

SSLContext ctx = SSLContext.getInstance("TLS");

//使用TrustManager来初始化该上下文，TrustManager只是被SSL的Socket所使用

ctx.init(null, new TrustManager[]{xtm}, null);

//创建SSLSocketFactory

SSLSocketFactory socketFactory = new SSLSocketFactory(ctx);

//通过SchemeRegistry将SSLSocketFactory注册到我们的HttpClient上

httpClient.getConnectionManager().getSchemeRegistry().register(new Scheme("https", 443, socketFactory));

HttpPost httpPost = new HttpPost(reqURL); //创建HttpPost

List<NameValuePair> formParams = new ArrayList<NameValuePair>(); //构建POST请求的表单参数

for(Map.Entry<String,String> entry : params.entrySet()){

formParams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));

}

httpPost.setEntity(new UrlEncodedFormEntity(formParams, "UTF-8"));

HttpResponse response = httpClient.execute(httpPost); //执行POST请求

HttpEntity entity = response.getEntity(); //获取响应实体

if (null != entity) {

responseLength = entity.getContentLength();

responseContent = EntityUtils.toString(entity, "UTF-8");

EntityUtils.consume(entity); //Consume response content

}

System.out.println("请求地址: " + httpPost.getURI());

System.out.println("响应状态: " + response.getStatusLine());

System.out.println("响应长度: " + responseLength);

System.out.println("响应内容: " + responseContent);

} catch (KeyManagementException e) {

e.printStackTrace();

} catch (NoSuchAlgorithmException e) {

e.printStackTrace();

} catch (UnsupportedEncodingException e) {

e.printStackTrace();

} catch (ClientProtocolException e) {

e.printStackTrace();

} catch (ParseException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

} finally {

httpClient.getConnectionManager().shutdown(); //关闭连接,释放资源

return responseContent;

}

}

}