webservice的错误

第一次自学写webservice给我感觉真的很痛苦，曾经看见老师们几分钟就搞定，可现在我花了几个小时都没弄出处，还出了不少的错，现在我就把这些错记一记，以防以后写webservice又出错找不到解决办法

 

1.  错误：  

Exception in thread "main" javax.xml.ws.WebServiceException: Unable to create
 JAXBContext due to the security restriction
（WebServiceException:无法创建JAXBContext由于安全限制）

说明：数据库的数据已经全部读取完了，却还报空指针异常，去修改 Endpoint.publish的实例
Hibernate: 
    select
        student0_.sid as sid1_0_,
        student0_.sNAME as sNAME2_0_,
        student0_.classId as classId3_0_ 
    from
        Students student0_
Student [sid=10, sname=倪明, classId=2]
Student [sid=11, sname=倪明, classId=2]
Student [sid=2, sname=李红, classId=2]
Student [sid=3, sname=黎明, classId=3]
Student [sid=4, sname=张洋, classId=4]
Exception in thread "main" java.lang.NullPointerException
	at com.sun.xml.internal.ws.server.EndpointFactory.getWsdlLocation(EndpointFactory.java:385)
	at com.sun.xml.internal.ws.transport.http.server.EndpointImpl.getPrimaryWsdl(EndpointImpl.java:265)
	at com.sun.xml.internal.ws.transport.http.server.EndpointImpl.createEndpoint(EndpointImpl.java:208)
	at com.sun.xml.internal.ws.transport.http.server.EndpointImpl.publish(EndpointImpl.java:138)
	at com.sun.xml.internal.ws.spi.ProviderImpl.createAndPublishEndpoint(ProviderImpl.java:92)
	at javax.xml.ws.Endpoint.publish(Endpoint.java:170)
	at com.youmeng.ws.servlet.StudentWs.main(StudentWs.java:43)

 

  原代码：

@WebService
@SOAPBinding(style=Style.RPC)
public class StudentWs {
	
	StudentDaoImpl daoImpl = new StudentDaoImpl();	
	public List<Student> selectStudent(){
		return (ArrayList<Student>) daoImpl.selectStudent();
	}
		
	public static void main(String[] arg){
		//发布webService
	  Endpoint.publish("http://192.168.0.132/student", new StudentWs());
	  System.out.println("已经连接上IP为：http://192.168.0.132的地址");
	}

 解决办法：

将List<Student> 改为 ArrayList<Student>

 

 

 

2. 错误

org.apache.cxf.service.factory.ReflectionServiceFactoryBean buildServiceFromClass
信息: Creating Service {http://webservice.qxqpw.com/}HelloWorldService from class com.qxqpw.webservice.HelloWorld
Exception in thread "main" javax.xml.ws.WebServiceException: Could not find wsdl:binding operation info for web method sayHi.
 at org.apache.cxf.jaxws.JaxWsClientProxy.invoke(JaxWsClientProxy.java:113)
 at $Proxy14.sayHi(Unknown Source)
 at com.qxqp.test.TestWebservice.main(TestWebservice.java:12)

    解决：

spring cxf 异常：
    有两个原因：

客户端的接口的包名（或者接口名）和服务端的包名（或者接口名）不一致
客户端的接口没有加上@Webservice注解

 

 

3. 错误

Exception in thread "main" javax.xml.ws.WebServiceException: Could not find wsdl:binding operation info for web method getListPnameByuid.
at org.apache.cxf.jaxws.JaxWsClientProxy.invoke(JaxWsClientProxy.java:113)
at $Proxy17.getListPnameByuid(Unknown Source)
at cn.navidog.front.users.testwebservice.main(testwebservice.java:21)

    解决方法

 

原因是因为客户端的service中的方法没有跟服务端绑定，只需要将客户端的Service接口加上注解@WebService，异常便解决了。

 

 3.转化为xml形式

    引入javax.ws.rs（jaxwr）见下方新文件

    在方法上面添加

在方法上加   @GET  
	@Path("/greeting") 
	@Produces({ MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON })

   代码如下

 

 

@GET  
@Path("/greeting") 
@Produces("application/json")
@Connsumes(MediaType.Appliaction_JSON)
public List<Student> getStudentAll(@QueryParam("start")String start,@QueryParam("count") String count));