最近开发开始学习 Web Service，如果你是大神，请路过！谢谢！遵循前辈大神们的教导 ，内事不决问度娘，外事不决问谷歌（现在谷歌已经不能用了） ，只能问度娘了！上网 一百度，套用周董的一句歌词，霍，霍，霍，霍，这么多的套路(axis,axis2,XFire,CXF 等)， 我到底选择哪一个？因为要和 Spring 进行对接，看了一下，CXF 与 Spring 的耦合度最好， 于是就选择了 CXF。上官网下 jar 包，下了最新的 apache-cxf-3.1.4.zip 包。解压出来，看看 里面的最简单的实例，apache-cxf-3.1.4samplesjava_first_jaxws，本着你快乐所以我快乐加 上不要脸的原则，我抄抄抄，改了一下名字，开发环境开发环境 jdk1.6, jdk1.5 没试过，上眼呐！ 新建工程 mywbs，导入 jar 包cxf-core-3.1.4.jar jetty-continuation-9.2.11.v20150529.jar jetty-http-9.2.11.v20150529.jar jetty-io-9.2.11.v20150529.jar jetty-server-9.2.11.v20150529.jar jetty-util-9.2.11.v20150529.jar wsdl4j-1.6.3.jar xmlschema-core-2.2.1.jar一、接口类IHelloWorld.java package com.ws.hello;import java.util.List;import javax.jws.WebService;import com.ws.entity.Users;WebServicepublic interface IHelloWorld public String sayHello(String name);public String getUserName(Users user);public List getListUser();二、实现类（说明endpointInterface = “com.ws.hello.IHelloWorld“，IHelloWorld 类加上路径，此处注意类加上路径，此处注意） HelloWorldImpl.javapackage com.ws.hello;import java.util.ArrayList;import java.util.List;import javax.jws.WebService;import com.ws.entity.Users;WebService(endpointInterface = “com.ws.hello.IHelloWorld“,serviceName = “IHelloWorld“, portName=“IHelloWorldPort“)public class HelloWorldImpl implements IHelloWorld Overridepublic String sayHello(String name) return name + “: 您好啊!“; Overridepublic String getUserName(Users user) return user.getName();Overridepublic List getListUser() System.out.println(“getListUser called“);List list = new ArrayList();list.add(new Users(2,“张三“);list.add(new Users(3, “十八罗汉“);list.add(new Users(4,“五王“); return list;三、实体类Users package com.ws.entity;import java.io.Serializable;public class Users implements Serializableprivate static final long serialVersionUID = -5031894017095689998L;private Integer id;private String name;public Integer getId() return id;public void setId(Integer id) this.id = id;public String getName() return name;public void setName(String name) this.name = name;public Users(Integer id, String name) super();this.id = id;this.name = name;public Users() super();Users 类如果不写默认构造方法，将报如下异常： Exception in thread “main“ javax.xml.ws.WebServiceException: Unable to create JAXBContextat com.sun.xml.internal.ws.model.AbstractSEIModelImpl.createJAXBContext(Unknown Source)at com.sun.xml.internal.ws.model.AbstractSEIModelImpl.postProcess(Unknown Source)at com.sun.xml.internal.ws.model.RuntimeModeler.buildRuntimeModel(Unknown Source)at com.sun.xml.internal.ws.server.EndpointFactory.createSEIModel(Unknown Source)at com.sun.xml.internal.ws.server.EndpointFactory.createEndpoint(Unknown Source)at com.sun.xml.internal.ws.api.server.WSEndpoint.create(Unknown Source)at com.sun.xml.internal.ws.api.server.WSEndpoint.create(Unknown Source)at com.sun.xml.internal.ws.transport.http.server.EndpointImpl.createEndpoint(Unknown Source)at com.sun.xml.internal.ws.transport.http.server.EndpointImpl.publish(Unknown Source)at com.sun.xml.internal.ws.spi.ProviderImpl.createAndPublishEndpoint(Unknown Source)at javax.xml.ws.Endpoint.publish(Endpoint.java:220)at com.ws.deploy.DeployHelloWorldService.(DeployHelloWorldService.java:14)at com.ws.deploy.DeployHelloWorldService.main(DeployHelloWorldService.java:23)Caused by: java.security.PrivilegedActionException: com.sun.xml.internal.bind.v2.runtime.IllegalAnnotationsException: 1 counts of IllegalAnnotationExceptionscom.ws.entity.Users does not have a no-arg default constructor.this problem is related to the following location:at com.ws.entity.Usersat public java.util.List com.ws.hello.jaxws.GetListUserResponse._returnat com.ws.hello.jaxws.GetListUserResponseat java.security.AccessController.doPrivileged(Native Method). 13 moreCaused by: com.sun.xml.internal.bind.v2.runtime.IllegalAnnotationsException: 1 counts of IllegalAnnotationExceptions com.ws.entity.Users does not have a no-arg default constructor.this problem is related to the following location:at com.ws.entity.Usersat public java.util.List com.ws.hello.jaxws.GetListUserResponse._returnat com.ws.hello.jaxws.GetListUserResponseat com.sun.xml.internal.bind.v2.runtime.IllegalAnnotationsException$Builder.check(Unknown Source)at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getTypeInfoSet(Unknown Source)at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.(Unknown Source)at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl$JAXBContextBuilder.build(Unknown Source)at com.sun.xml.internal.bind.v2.ContextFactory.createContext(Unknown Source)at com.sun.xml.internal.bind.api.JAXBRIContext.newInstance(Unknown Source)at com.sun.xml.internal.ws.developer.JAXBContextFactory$1.createJAXBContext(Unknown Source)at com.sun.xml.internal.ws.model.AbstractSEIModelImpl$1.run(Unknown Source)at com.sun.xml.internal.ws.model.AbstractSEIModelImpl$1.run(Unknown Source). 14 more晕了，真是崩溃了，就写了这么几句话！错误代码比正常代码还要多！真是婶婶能忍叔叔 不能忍，虽然英语很烂，连猜带蒙吧，看黑色的一句话，大概似乎是告诉我们Users类中没 有默认的构造方法，果断加上，错误消失！此处应有掌声！鼓掌！四、DeployHelloWorldService.javapackage com.ws.d