kaizhuQin 2011-09-14
CXF 拦截器的使用
在做SP短信管理平台开发时,需要连接电信ISAG短信网关,而电信ISAG短信网关提供WebService 短信提交服务,需要开发WebService客户端连接网关。开发时使用CXF技术为开发技术。 连接时,根据服务要求添加头信息,在头信息中增加验证信息,比如用户ID,加密密码,还有其他业务信息,类似下面的Demo代码:
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Header>
<tns:RequestSOAPHeader
xmlns:tns="http://www.chinatelecom.com.cn/schema/ctcc/common/v2_1">
<tns:usernamexmlns="http://www.chinatelecom.com.cn/schema/ctcc/common/v2_1">
test_username
</tns:username>
<tns:passwordxmlns="http://www.chinatelecom.com.cn/schema/ctcc/common/v2_1">
b936443545b5061eceff663eadd8e91d
</tns:password>
<tns:timeStampxmlns="http://www.chinatelecom.com.cn/schema/ctcc/common/v2_1">
1013135742
</tns:timeStamp>
</tns:RequestSOAPHeader>
</soap:Header>
<soap:Body>
<!--省略-->
</soap:Body>
</soap:Envelope>而SoapHeader信息使用拦截器,可以很容易添加,下面的Sample代码添加头信息:
import java.security.NoSuchAlgorithmException;
importjava.text.SimpleDateFormat;
importjava.util.Date;
import java.util.List;import javax.xml.namespace.QName;
import org.apache.cxf.binding.soap.SoapHeader;
importorg.apache.cxf.binding.soap.SoapMessage;
importorg.apache.cxf.binding.soap.interceptor.AbstractSoapInterceptor;
importorg.apache.cxf.headers.Header;
importorg.apache.cxf.helpers.DOMUtils;
importorg.apache.cxf.interceptor.Fault;
importorg.apache.cxf.phase.Phase;
importorg.w3c.dom.Document;
import org.w3c.dom.Element;public class SampleHeaderInterceptor extends AbstractSoapInterceptor {
private static String namespaceURI = "http://www.chinatelecom.com.cn/schema/ctcc/common/v2_1";
public SampleHeaderInterceptor() {
super(Phase.WRITE);
}public void handleMessage(SoapMessage message) throws Fault {
String timeStampStr = df.format(new Date()); String spPasswordStr = getSpPassword(System.getProperty("spId", ""), System.getProperty("spKey", "") );
QName qName = new QName("RequestSOAPHeader");
Document document = DOMUtils.createDocument();
Element spId = document.createElement("tns:spId"); spId.setTextContent(System.getProperty("spId", ""));
Element spPassword = document.createElement("tns:spPassword"); spPassword.setTextContent(spPasswordStr);
Element root = document.createElementNS(namespaceURI, "tns:RequestSOAPHeader");
root.appendChild(spId);
root.appendChild(spPassword);SoapHeader header = new SoapHeader(qName, root);
List<Header>headers=message.getHeaders();
headers.add(header);
}private static String getSpPassword(String spId, String key) {
try{
returnMD5.md5((spId+key).getBytes());
}catch(NoSuchAlgorithmExceptione){
thrownewRuntimeException(e.getMessage(),e);
}
}}
使用时,在配置文件中添加Out 拦截器,配置文件如下:
<beanid="clientFactory"class="org.apache.cxf.jaxws.JaxWsProxyFactoryBean">
<propertyname="serviceClass"value="sample.service.SendSms"/>
<propertyname="address"value="http://localhost:8080/service/sms/SendSmsService"/>
<propertyname="outInterceptors">
<list>
<beanclass="sample.client.SampleSOAPHeaderInterceptor"/>
</list>
</property>
</bean>也可以在代码中直接添加拦截器:
JaxWsProxyFactoryBeanfactory=newJaxWsProxyFactoryBean();
factory.setAddress("http://localhost:8080/service/sms/SendSmsService");
factory.setServiceClass(SendSms.class);
factory.getOutInterceptors().add(new sample.client.SampleSOAPHeaderInterceptor());这样就可以完成Out拦截器了。但接下来就遇到问题了,短信上行(回复),还有状态报告返回都会添加回访用户名和密码,(类似提交短信也要进行用户名密码验证,否则我们的接收平台会收到很多可能是别人无效的信息),于是获取用户名和密码的拦截器也需要开发,但是在开发读取拦截器时都无法获取头信息,弄了快一天都行,而任务要求时间紧,到网上Google 下,使用了Handler 处理机制进行了处理,代码如下:
import javax.xml.soap.SOAPException;
importjavax.xml.soap.SOAPHeader;
importjavax.xml.soap.SOAPMessage;
importjavax.xml.ws.handler.Handler;
importjavax.xml.ws.handler.MessageContext;
import javax.xml.ws.handler.soap.SOAPMessageContext;import org.apache.log4j.Logger;
importorg.w3c.dom.Node;
import org.w3c.dom.NodeList;public class SampleSoapAuthHandler implements Handler<SOAPMessageContext> {
private static Logger log = Logger.getLogger(SampleSoapAuthHandler.class);
privateStringspRevId;
private String spRevpassword;public void close(MessageContext messageContext) {
log.info("SampleSoapAuthHandlerclose");
}public boolean handleFault(SOAPMessageContext messageContext) {
log.error("handleFaulterror");
returnfalse;
}public boolean handleMessage(SOAPMessageContext messageContext) {
SOAPMessagemessage=messageContext.getMessage();
BooleanoutboundProperty=(Boolean)messageContext.get(MessageContext.MESSAGE_OUTBOUND_PROPERTY);
if(!outboundProperty){//InBoundMessage,
StringspRevid="";
StringspRevpassword="";
try{
SOAPHeadersoapHeader=message.getSOAPHeader();
NodeListnodeList=soapHeader.getChildNodes();
for(inti=0;i<nodeList.getLength();i++){
NodenodeAuth=nodeList.item(i);
if(nodeAuth.getNodeType()==Node.ELEMENT_NODE&&"SampleSOAPHeader".equals(nodeAuth.getLocalName())){
for(Nodenode=nodeAuth.getFirstChild();node!=null;node=node.getNextSibling()){
if(node.getNodeType()==Node.ELEMENT_NODE){
if("spRevId".equals(node.getLocalName())&&node.getFirstChild()!=null){
spRevId=node.getFirstChild().getTextContent();
}elseif("spRevpassword".equals(node.getLocalName())&&node.getFirstChild()!=null){
spRevpassword=node.getFirstChild().getTextContent();
}
}
}
}
}boolean ret = validUserAndPswd(spRevId, spRevpassword);
if(!ret){
log.warn("错误的反调用户名和密码,spRevId:"+spRevId+",spRevPassword:"+spRevpassword);
returnret;
}
log.info("收到信息,验证通过");
System.setProperty("mo:linkId",linkId);
return ret;} catch (SOAPException e) {
log.error("解析异常,SOAPException:"+e,e);
}
}
returnfalse;
}
privatebooleanvalidUserAndPswd(StringspRevId,StringspRevpassword){
if(this.spRevId==null&&this.spRevpassword==null)
returntrue;
if(this.spRevId==null&&this.spRevpassword!=null)
returnthis.spRevpassword.equals(spRevpassword);
if(this.spRevId!=null&&this.spRevpassword==null)
returnthis.spRevId.equals(spRevId);
returnthis.spRevId.equals(spRevId)&&this.spRevpassword.equals(spRevpassword);
}public void setSpRevId(String spRevId) {
this.spRevId=spRevId;
}public void setSpRevpassword(String spRevpassword) {
this.spRevpassword=spRevpassword;
}}
上述代码部分来自google 搜索到的,在此谢谢原作者。
添加处理器配置文件:
<beanid="isagReceiver"class="sample.SampleReceiver"singleton="false">
<propertyname="address"value="http://localhost:8080/service/MessageService"/>
<propertyname="handlers">
<list>
<refbean="authHandler"/>
</list>
</property>
</bean>
<beanid="authHandler"class="sample.SampleSoapAuthHandler"singleton="true">
<propertyname="spRevId"value="username"></property>
<propertyname="spRevpassword"value="pawd"></property>
</bean>
因为自定义的处理器实现Handler接口,所以代码中只需要把自己的业务处理放在handler方法中即可,处理器链会自动调用。
终于可以完成任务了。之后,有了空闲时间,对cxf的拦截器还是决定各种方式进行测试,今天终于得到满意的结果,把拦截验证的拦截器代码贴出来,如果有更好的建议,可以交流下:
import javax.xml.soap.SOAPException;
importjavax.xml.soap.SOAPHeader;
import javax.xml.soap.SOAPMessage;import org.apache.cxf.binding.soap.SoapMessage;
importorg.apache.cxf.binding.soap.saaj.SAAJInInterceptor;
importorg.apache.cxf.interceptor.Fault;
importorg.apache.cxf.phase.AbstractPhaseInterceptor;
importorg.apache.cxf.phase.Phase;
importorg.w3c.dom.Node;
import org.w3c.dom.NodeList;public class SpInfoInterceptor extends AbstractPhaseInterceptor<SoapMessage> { private SAAJInInterceptor inInterceptor = new SAAJInInterceptor();
public SampleInterceptor() {
super(Phase.PRE_PROTOCOL);
getAfter().add(SAAJInInterceptor.class.getName());//这一步好像是必须的,与inInterceptor.handleMessage(message);关联
}public void handleMessage(SoapMessage message) throws Fault {
//此处注意是javax.xml.soap.SOAPMessage而不是org.apache.cxf.binding.soap.SoapMessage
//虽然方法参数是SoapMessage
SOAPMessagesm=message.getContent(SOAPMessage.class);
if(sm==null){
inInterceptor.handleMessage(message);
sm=message.getContent(SOAPMessage.class);
}
SOAPHeaderheader=null;
try{
header=sm.getSOAPHeader();
}catch(SOAPExceptione){
e.printStackTrace();
}
if(header==null){
return;
}//获取<soap:Header ..><tns:RequestSOAPHeader ...> ... </tns:RequestSOAPHeader></soap:Header>中指定的标签的内容
NodeListnodeList=header.getElementsByTagName("tns:RequestSOAPHeader");
for(inti=0;i<nodeList.getLength();i++){
NodenodeAuth=nodeList.item(i);
for(Nodenode=nodeAuth.getFirstChild();node!=null;node=node.getNextSibling()){
if(node.getNodeType()==Node.ELEMENT_NODE){
//if("username".equals(node.getLocalName())&&node.getFirstChild()!=null){
//username=node.getFirstChild().getTextContent();//获取<soap:Header>中的username参数的值
//}
if(node.getLocalName()!=null&&node.getFirstChild()!=null)
System.out.println(node.getLocalName()+"<===========>"+node.getFirstChild().getTextContent());
}
}
//}
}
}}
上述部分代码也是参考网上代码,谢谢原作者。代码中省略的日志信息的输出,可以自行添加。
至此, cxf 添加头信息和验证信息的两种拦截器都完成了,其他类似的功能的拦截器可以相互参考,其他的如附件的拦截器有空再补充了,今天就写到这里。
文章出处:飞诺网(www.diybl.com):http://www.diybl.com/course/3_program/java/javajs/20100106/186733.html
的错误。geronimo-servlet_2.5_spec-1.2.jar (or Sun's Servlet jar). <?xml version="1.0" encoding="UTF-8"?>