为客户端添加拥有业务逻辑的Handler
以HelloWord为例，客户端的LogicalHandler可以拦截出站的请求消息以检查调用sayHello服务操作的输入参数。如果参数name值为“老板”则修改为“刘诗诗”。示例如下：
服务端：
HelloWord.java
package ch03.ts;
import javax.jws.WebMethod;
import javax.jws.WebParam;
import javax.jws.WebService;
import javax.xml.ws.Holder;
@WebService
public interface HelloWord {
@WebMethod
void sayHello(@WebParam(name="name") String name,
@WebParam(name="wh",mode=WebParam.Mode.INOUT) Holder<String> wh,
@WebParam(name="hf",mode=WebParam.Mode.OUT) Holder<String> hf);
}
HelloWordImpl.java
package ch03.ts;
import javax.jws.WebService;
import javax.xml.ws.Holder;
@WebService(endpointInterface = "ch03.ts.HelloWord")
public class HelloWordImpl implements HelloWord {
@Override
public void sayHello(String name, Holder<String> wh, Holder<String> hf) {
System.out.println(name + "!" + wh.value);
wh.value = "你们好";
hf.value = "同学们";
}
}
HelloWordPublisher.java
package ch03.ts;
import javax.xml.ws.Endpoint;
public class HelloWordPublisher {
public static void main(String[] args) {
Endpoint.publish("http://localhost:7654/ts", new HelloWordImpl());
}
}
客户端：
HelloWord.java
package hw4;
import javax.jws.WebMethod;
import javax.jws.WebParam;
import javax.jws.WebService;
import javax.xml.bind.annotation.XmlSeeAlso;
import javax.xml.ws.Action;
import javax.xml.ws.Holder;
import javax.xml.ws.RequestWrapper;
import javax.xml.ws.ResponseWrapper;
/**
* This class was generated by the JAX-WS RI.
* JAX-WS RI 2.2.4-b01
* Generated source version: 2.2
*/
@WebService(name = "HelloWord", targetNamespace = "http://ts.ch03/")
@XmlSeeAlso({
ObjectFactory.class
})
public interface HelloWord {
/**
* @param wh
* @param name
* @param hf
*/
@WebMethod
@RequestWrapper(localName = "sayHello", targetNamespace = "http://ts.ch03/",
className = "hw4.SayHello")
@ResponseWrapper(localName = "sayHelloResponse", targetNamespace = "http://ts.ch03/",
className = "hw4.SayHelloResponse")
@Action(input = "http://ts.ch03/HelloWord/sayHelloRequest",
output = "http://ts.ch03/HelloWord/sayHelloResponse")
public void sayHello(
@WebParam(name = "name", targetNamespace = "")
String name,
@WebParam(name = "wh", targetNamespace = "", mode = WebParam.Mode.INOUT)
Holder<String> wh,
@WebParam(name = "hf", targetNamespace = "", mode = WebParam.Mode.OUT)
Holder<String> hf);
}
HelloWordImplService.java（注意：这里添加了注解 @HandlerChain(file="handler-chain1.xml")）：
package hw4;
import java.net.MalformedURLException;
import java.net.URL;
import javax.jws.HandlerChain;
import javax.xml.namespace.QName;
import javax.xml.ws.Service;
import javax.xml.ws.WebEndpoint;
import javax.xml.ws.WebServiceClient;
import javax.xml.ws.WebServiceException;
import javax.xml.ws.WebServiceFeature;
/**
* This class was generated by the JAX-WS RI.
* JAX-WS RI 2.2.4-b01
* Generated source version: 2.2
*/
@WebServiceClient(name = "HelloWordImplService", targetNamespace = "http://ts.ch03/",
wsdlLocation = "http://localhost:7654/ts?wsdl")
@HandlerChain(file = "handler-chain1.xml")
public class HelloWordImplService extends Service{
private final static URL HELLOWORDIMPLSERVICE_WSDL_LOCATION;
private final static WebServiceException HELLOWORDIMPLSERVICE_EXCEPTION;
private final static QName HELLOWORDIMPLSERVICE_QNAME =
new QName("http://ts.ch03/", "HelloWordImplService");
static {
URL url = null;
WebServiceException e = null;
try {
url = new URL("http://localhost:7654/ts?wsdl");
} catch (MalformedURLException ex) {
e = new WebServiceException(ex);
}
HELLOWORDIMPLSERVICE_WSDL_LOCATION = url;
HELLOWORDIMPLSERVICE_EXCEPTION = e;
}
public HelloWordImplService() {
super(__getWsdlLocation(), HELLOWORDIMPLSERVICE_QNAME);
}
public HelloWordImplService(WebServiceFeature... features) {
super(__getWsdlLocation(), HELLOWORDIMPLSERVICE_QNAME, features);
}
public HelloWordImplService(URL wsdlLocation) {
super(wsdlLocation, HELLOWORDIMPLSERVICE_QNAME);
}
public HelloWordImplService(URL wsdlLocation,
WebServiceFeature... features) {
super(wsdlLocation, HELLOWORDIMPLSERVICE_QNAME, features);
}
public HelloWordImplService(URL wsdlLocation, QName serviceName) {
super(wsdlLocation, serviceName);
}
public HelloWordImplService(URL wsdlLocation, QName serviceName,
WebServiceFeature... features) {
super(wsdlLocation, serviceName, features);
}
/**
* @return
* returns HelloWord
*/
@WebEndpoint(name = "HelloWordImplPort")
public HelloWord getHelloWordImplPort() {
return super.getPort(new QName("http://ts.ch03/", "HelloWordImplPort"),
HelloWord.class);
}
/**
*
* @param features
* A list of {@link javax.xml.ws.WebServiceFeature} to configure on t
* he proxy. Supported features not in the <code>features</code> parameter
* will have their default values.
* @return
* returns HelloWord
*/
@WebEndpoint(name = "HelloWordImplPort")
public HelloWord getHelloWordImplPort(WebServiceFeature... features) {
return super.getPort(new QName("http://ts.ch03/", "HelloWordImplPort"),
HelloWord.class, features);
}
private static URL __getWsdlLocation() {
if (HELLOWORDIMPLSERVICE_EXCEPTION!= null) {
throw HELLOWORDIMPLSERVICE_EXCEPTION;
}
return HELLOWORDIMPLSERVICE_WSDL_LOCATION;
}
}
SayHello.java：
package hw4;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlType;
/**
* <p>Java class for sayHello complex type.
* <p>The following schema fragment specifies the expected content
* contained within this class.
* <pre>
* <complexType name="sayHello">
* <complexContent>
* <restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
* <sequence>
* <element name="name" type="{http://www.w3.org/2001/XMLSchema}string"
* minOccurs="0"/>
* <element name="wh" type="{http://www.w3.org/2001/XMLSchema}string"
* minOccurs="0"/>
* </sequence>
* </restriction>
* </complexContent>
* </complexType>
* </pre>
*/
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "sayHello", propOrder = {
"name",
"wh"
})
public class SayHello {
protected String name;
protected String wh;
/**
* Gets the value of the name property.
* @return
* possible object is
* {@link String }
*/
public String getName() {
return name;
}
/**
* Sets the value of the name property.
* @param value
* allowed object is
* {@link String }
*/
public void setName(String value) {
this.name = value;
}
/**
* Gets the value of the wh property.
* @return
* possible object is
* {@link String }
*/
public String getWh() {
return wh;
}
/**
* Sets the value of the wh property.
* @param value
* allowed object is
* {@link String }
*/
public void setWh(String value) {
this.wh = value;
}
}
SayHelloResponse.java：
package hw4;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlType;
/**
* <p>Java class for sayHelloResponse complex type.
* <p>The following schema fragment specifies the expected content
* contained within this class.
* <pre>
* <complexType name="sayHelloResponse">
* <complexContent>
* <restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
* <sequence>
* <element name="wh" type="{http://www.w3.org/2001/XMLSchema}string"
* minOccurs="0"/>
* <element name="hf" type="{http://www.w3.org/2001/XMLSchema}string"
* minOccurs="0"/>
* </sequence>
* </restriction>
* </complexContent>
* </complexType>
* </pre>
*/
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "sayHelloResponse", propOrder = {
"wh",
"hf"
})
public class SayHelloResponse {
protected String wh;
protected String hf;
/**
* Gets the value of the wh property.
* @return
* possible object is
* {@link String }
*/
public String getWh() {
return wh;
}
/**
* Sets the value of the wh property.
* @param value
* allowed object is
* {@link String }
*/
public void setWh(String value) {
this.wh = value;
}
/**
* Gets the value of the hf property.
* @return
* possible object is
* {@link String }
*/
public String getHf() {
return hf;
}
/**
* Sets the value of the hf property.
* @param value
* allowed object is
* {@link String }
*/
public void setHf(String value) {
this.hf = value;
}
}
ObjectFactory.java与package-info.java省略。
HelloWordClient1.java：
package hw4;
import javax.xml.ws.Holder;
public class HelloWordClient1 {
public static void main(String[] args) {
String name = "老板";
Holder<String> wh = new Holder<String>();
wh.value = "你好";
Holder<String> hf = new Holder<String>();
HelloWordImplService service = new HelloWordImplService();
HelloWord port = service.getPort(HelloWord.class);
port.sayHello(name, wh, hf);
System.out.println(hf.value + "," + wh.value);
}
}
ArgHandler.java：
package fibC;
import hw4.SayHello;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.ws.LogicalMessage;
import javax.xml.ws.handler.LogicalHandler;
import javax.xml.ws.handler.LogicalMessageContext;
import javax.xml.ws.handler.MessageContext;
/**
* 如果称呼不正确，对称呼进行修正
* @author fuhd
*/
public class ArgHandler implements LogicalHandler<LogicalMessageContext> {
@SuppressWarnings({ "unchecked", "rawtypes" })
@Override
public boolean handleMessage(LogicalMessageContext context) {
Boolean b = (Boolean) context.get(MessageContext.MESSAGE_OUTBOUND_PROPERTY);
if(b){
System.out.println("ArgHandler.handleMessage");
LogicalMessage msg = context.getMessage();
try {
JAXBContext jaxb_ctx = JAXBContext.newInstance("hw4");
Object payload = msg.getPayload(jaxb_ctx);
if(payload instanceof JAXBElement){
Object obj = ((JAXBElement)payload).getValue();
SayHello sayH = (SayHello)obj;
String name1 = sayH.getName();
if("老板".equals(name1)){
sayH.setName("刘诗诗");
((JAXBElement)payload).setValue(obj);
msg.setPayload(payload, jaxb_ctx);
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
return true;
}
@Override
public boolean handleFault(LogicalMessageContext context) {
return true;
}
@Override
public void close(MessageContext context) {
}
}
handler-chain1.xml：
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?> <javaee:handler-chains xmlns:javaee="http://java.sun.com/xml/ns/javaee" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <javaee:handler-chain> <javaee:handler> <javaee:handler-class>fibC.ArgHandler</javaee:handler-class> </javaee:handler> </javaee:handler-chain> </javaee:handler-chains>
ArgHandler利用JAXBContext对象实例从LogicalMessage中解析出消息单元。这个消息单元就是出站的SOAP消息。LogicalMessage中还有一个无参数的getPayload方法，该方法返回一个XML源对象，可以从这个源对象中的XML编码为一个Java对象。拥有一个输入参数的getPayload方法中，参数可以是一个类，也可以是一个或多个包名称（注：上面这个例子中，hw4是wsimport生成的工件所在包的名称）。消息单元解析成一个JAXBElement对象，对应XML中描述SayHello对象的元素。SayHello是wsimport生成的工具集合中的一个类。尤其是Java对象类hw4.SayHello对应于服务操作sayHello中一个SOAP请求消息。请求参数修改完之后，通过JAXBElement更新转换参数值，最后通过调用方法setPayload更新消息体内容。