JAX-WS简介:
JAX_RPC(Java API for XML-Based RPC)允许Java应用程序可以通过已知的描述信息调用一个基于Java的Web服务,描述信息与Web服务的WSDL描述相一致
JAX-RPC2.0更名为JAX-WS2.0(Java API for XML-Based Web Services)
JAX-WS中,一个远程调用可以转换为一个基于XML的协议,如SOAP。开发者在使用JAX-WS的过程中,不需要编写任何生成、处理SOAP消息的代码,JAX-WS在运行时自动将API的调用转换为相应的SOAP消息
在服务器端,用户只需要通过Java语言定义远程调用所需实现的接口,并提供相应实现,通过调用JAX-WS的服务发布接口即可将其发布为WebService接口
在客户端,用户可以通过JAX-WS的API创建一个代理来实现对于远程服务器端的调用
JAX-WS服务端:
JAX-WS服务端采用注释描述WebService,不再依赖WebService描述文件
使用JDK1.6_45(JDK1.5中不包含所需类)
package com.sean.server; import javax.jws.WebMethod; import javax.jws.WebParam; import javax.jws.WebService; @WebService public interface Plus { @WebMethod public int plus(@WebParam(name="x") int x,@WebParam(name="y") int y); }
package com.sean.server; import javax.jws.WebMethod; import javax.jws.WebParam; import javax.jws.WebService; @WebService public class PlusImpl implements Plus { @WebMethod public int plus(@WebParam(name="x") int x, @WebParam(name="y") int y) { return x + y; } }
package com.sean.server; import javax.xml.ws.Endpoint; public class Server { public static void main(String[] args) { PlusImpl plus = new PlusImpl(); String addr = "http://127.0.0.1:8888/Plus"; Endpoint.publish(addr, plus); } }
程序启动后,访问http://127.0.0.1:8888/Plus?wsdl即可查看自动生成的WSDL文件
<?xml version="1.0" encoding="UTF-8"?> <!-- Published by JAX-WS RI at http://jax-ws.dev.java.net. RI's version is JAX-WS RI 2.1.6 in JDK 6. --> <!-- Generated by JAX-WS RI at http://jax-ws.dev.java.net. RI's version is JAX-WS RI 2.1.6 in JDK 6. --> <definitions name="PlusImplService" targetNamespace="http://server.sean.com/" xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:tns="http://server.sean.com/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"> <types> <xsd:schema> <xsd:import schemaLocation="http://127.0.0.1:8888/Plus?xsd=1" namespace="http://server.sean.com/" /> </xsd:schema> </types> <message name="plus"> <part name="parameters" element="tns:plus" /> </message> <message name="plusResponse"> <part name="parameters" element="tns:plusResponse" /> </message> <portType name="PlusImpl"> <operation name="plus"> <input message="tns:plus" /> <output message="tns:plusResponse" /> </operation> </portType> <binding name="PlusImplPortBinding" type="tns:PlusImpl"> <soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http" /> <operation name="plus"> <soap:operation soapAction="" /> <input> <soap:body use="literal" /> </input> <output> <soap:body use="literal" /> </output> </operation> </binding> <service name="PlusImplService"> <port name="PlusImplPort" binding="tns:PlusImplPortBinding"> <soap:address location="http://127.0.0.1:8888/Plus" /> </port> </service> </definitions>
使用 SoapUI5.0.0尝试用上面的WSDL创建WebService服务端报错(org.apache.xmlbeans.XmlException:error:does not close tag.)
使用SoapUI4.5.2则一切正常,只能归咎于不同版本的SoapUI对文件格式校验不同
JAX-WS客户端:
package com.sean.client; import java.net.URL; import javax.xml.namespace.QName; import javax.xml.ws.Service; import com.sean.server.Plus; public class Client { public static void main(String[] args) throws Exception { QName serviceName = new QName("http://server.sean.com/", "PlusImplService"); QName portName = new QName("http://server.sean.com/", "PlusImplPort"); String addr = "http://127.0.0.1:8888/Plus?wsdl"; URL url = new URL(addr); Service service = Service.create(url, serviceName); Plus plus = service.getPort(portName,Plus.class); //Plus plus = service.getPort(Plus.class); int result = plus.plus(1, 2); System.out.println("result:" + result); } }
使用Plus plus = service.getPort(Plus.class)方法时,客户端调用时报错:
Exception in thread "main" javax.xml.ws.WebServiceException: Undefined port type: {http://server.sean.com/}Plus
解决方式一:
如客户端示例,将Plus plus = service.getPort(Plus.class)修改为Plus plus = service.getPort(portName,Plus.class)
解决方式二:
修改PlusImpl类的@WebService标记修改为@WebService(endpointInterface="com.sean.server.Plus")
参考:http://stackoverflow.com/questions/13417454/javax-xml-ws-webserviceexception-undefined-port-type-java-struts-soap-wsdl