使用HttpClient发送WebService Security（WSS）请求

  使用HttpClient发起普通的WebService还是非常方便的，为了测试代码能够正常运行，最好是先准备以下的JAR包：
    commons-codec-1.3.jar
    commons-httpclient-3.1.jar
    commons-logging-1.1.1.jar
    not-yet-commons-ssl-0.3.11.jar
    saxon-9.1.0.8j.jar
    wsdl4j-1.6.2-fixed.jar
    wss4j-1.5.8.jar
    xalan-2.7.1.jar
    xbean-fixed-2.4.0.jar
    xbean_xpath-2.4.0.jar
    xercesImpl.jar
    xml-apis-2.9.1.jar
    xml-apis.jar
    xmlpublic-2.4.0.jar
    xmlsec-1.4.3.jar

    这里先看一个简单的调用示例，几行代码就可以搞定：   

public static void sendWSRequest() throws IOException, SAXException, ParserConfigurationException{
    	String soapRequestXml = "(You soapRequest Xml)";
        PostMethod postmethod = new PostMethod("http://****/soapAddress");
        byte[] b = soapRequestXml.getBytes("UTF-8");
        InputStream is = new ByteArrayInputStream(b, 0, b.length);
        RequestEntity re = new InputStreamRequestEntity(is, b.length,"application/xop+xml; charset=UTF-8; type=\"text/xml\"");
        postmethod.setRequestEntity(re);
        HttpClient httpClient = new HttpClient();
        httpClient.executeMethod(postmethod);
        System.out.println(postmethod.getResponseBodyAsString());
    } 

    这里的soapReuqestXml是符合soap请求规范的XML String，如下：

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
   <soapenv:Header>
   </soapenv:Header>
   <soapenv:Body>
			<Field1>600001</Field1>
			<Field2>3123619</Field2>
			<Field3>HK</Field3>
   </soapenv:Body>
</soapenv:Envelope>

    这里的Header因为是普通的SOAP请求，所以是可以为空的；如果是WebService Security请求，我们需要做的就是在Header里面补充上Security Header就OK了，而下面我们要继续的就是为WSS请求补充Security Header。

    这里假设你已经准备好了JKS文件了，并且知道JKS的密码和需要使用的ALIAS的密码，后面要做的就是使用Apache的WS Security生成Security Header了。

    第一步，先获取Crypto，下面是一个我去掉了一些东西，但是功能完整实现类，不过使用者需要根据自己的情况修改JKS文件名以及密码等：

   

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.KeyStore;
import java.util.Properties;

import org.apache.commons.ssl.KeyStoreBuilder;
import org.apache.commons.ssl.Util;
import org.apache.ws.security.components.crypto.CredentialException;
import org.apache.ws.security.components.crypto.Crypto;
import org.apache.ws.security.components.crypto.Merlin;

public class KeyMaterialWssCrypto
{
	private KeyStore keyStore;
	private static Crypto crypto;
	
	//Notice: This must be modified.
	String jksFile = "Your JKS File.";
	String jksPass = "Your JKS Password.";
	String alias = "The jks alias";
	String aliasPass = "The jks alias password";

	public KeyStore load() throws Exception
	{
		if( keyStore != null ){
			return keyStore;
		}
		if( !isEmpty( alias ) && !isEmpty( aliasPass ) ){
			keyStore = KeyStoreBuilder.build( Util.streamToBytes( new FileInputStream( jksFile ) ),
					alias.getBytes(), jksPass.toCharArray(), aliasPass.toCharArray() );
		}
		else{
			keyStore = KeyStoreBuilder.build( Util.streamToBytes( new FileInputStream( jksFile ) ),	jksPass.toCharArray() );
		}
		return keyStore;
	}
	
	public Crypto getCrypto() throws CredentialException, IOException
	{
		if(crypto==null){
			Properties properties = new Properties();
			properties.put( "org.apache.ws.security.crypto.merlin.file", jksFile );
			properties.put( "org.apache.ws.security.crypto.merlin.keystore.provider", "this" );
			if( !isEmpty( alias ) )
				properties.put( "org.apache.ws.security.crypto.merlin.keystore.alias", alias );
			if( !isEmpty( aliasPass ) )
				properties.put( "org.apache.ws.security.crypto.merlin.alias.password", aliasPass );
			crypto = new KeyMaterialCrypto( properties );
		}
		return crypto;
	}

	private class KeyMaterialCrypto extends Merlin
	{
		private KeyMaterialCrypto( Properties properties ) throws CredentialException, IOException
		{
			super( properties );
		}
		@Override
		public KeyStore load( InputStream input, String storepass, String provider, String type )
				throws CredentialException
		{
			if( "this".equals( provider ) )
			{
				try
				{
					return CopyOfKeyMaterialWssCrypto.this.load();
				}
				catch( Exception e )
				{
					throw new CredentialException( 0, null, e );
				}
			}
			else
				return super.load( input, storepass, provider, type );
		}
	}
	public static boolean isEmpty(String str){
		if(str==null || "".equals(str.trim())){
			return true;
		}
		return false;
	}
}

    第二步，根据生成的Crypto生成WSS Header，首先需要将WS请求字符串转换为Document对象，然后才可以的，看下面源码：

   

import java.io.IOException;

import org.apache.ws.security.WSSecurityException;
import org.apache.ws.security.components.crypto.CredentialException;
import org.apache.ws.security.message.WSSecHeader;
import org.apache.ws.security.message.WSSecSignature;
import org.w3c.dom.Document;

import com.ubs.tools.wsclient.util.StringUtil;
import com.ubs.tools.wsclient.wsdl.wss.crypto.KeyMaterialWssCrypto;
import com.ubs.tools.wsclient.wsdl.wss.crypto.WssCrypto;
/**
 * 
 * @author libinfeng
 *
 */
public class CopyOfWSSUtil {
	/**
	 * Add Web Service Security Header to Request Document
	 * @param doc
	 * @param wssEntry
	 * @return
	 * @throws IOException 
	 * @throws CredentialException 
	 * @throws WSSecurityException 
	 * @throws Exception
	 */
	public static void addWSSecurity(Document doc, WSSEntry wssEntry ) throws WSSecurityException, CredentialException, IOException
	{
		KeyMaterialWssCrypto wssCrypto = new KeyMaterialWssCrypto(wssEntry);
		WSSecSignature wssSign = new WSSecSignature();
		wssSign.setUserInfo( wssEntry.getAlias(), wssEntry.getAliasPassword() );

		if( wssEntry.getKeyIdentifierType() != 0 )
			wssSign.setKeyIdentifierType( wssEntry.getKeyIdentifierType() );

		if( !StringUtil.isEmpty( wssEntry.getSignatureAlgorithm() ) )
			wssSign.setSignatureAlgorithm( wssEntry.getSignatureAlgorithm() );

		if( !StringUtil.isEmpty( wssEntry.getSignatureCanonicalization() ) )
			wssSign.setSigCanonicalization( wssEntry.getSignatureCanonicalization() );

		wssSign.setUseSingleCertificate( Boolean.FALSE );

		WSSecHeader secHeader = new WSSecHeader();
        secHeader.insertSecurityHeader(doc);
        
		wssSign.build( doc, wssCrypto.getCrypto(), secHeader );
	}
	class WSSEntry {
		private String jksFile;
		private String jksPass;
		private String alias;
		private String aliasPassword;
		private int keyIdentifierType=3;
		private String signatureAlgorithm;
		private String signatureCanonicalization;
		private String cryptoProvider;
		//omit get and set method
	}
}

    通过调用方法addWSSecurity后，Document对象就包含了WSS Header了，此时只需要把这个Document对象转换为字符串，再通过HttpClient发送就OK了。

本文出自：冯立彬的博客