调用SOAP WS时java.lang.reflect.InvocationTargetException的原因是什么？

Question

我只是尝试了解Soap WS。所以我只写了一些简单的类如下。但是当我在GlassFish中部署此应用程序并对其进行测试时，服务器将返回java.lang.reflect.InvocationTargetException。有人可以说出什么问题吗？

@WebService 
public class AuthorWS { 
AuthorService authorService = new AuthorService(); 

@WebMethod 
public Author getAuthorById(int authorId) { 
    return authorService.getAuthorById(authorId); 
} 

@WebMethod 
public ArrayList<Author> getAllAuthors() { 
    return authorService.getAllAuthors(); 
} 
} 

服务类：

public class AuthorService { 
AuthorDAO authorDAO = new AuthorDAO(); 
public Author getAuthorById(int authorId){ 

    return authorDAO.getAuthorById(authorId); 
} 
public ArrayList<Author> getAllAuthors(){ 
    return authorDAO.getAllAuthors(); 
} 
} 

DAO类：

public class AuthorDAO { 

public Author getAuthorById(int authorId){ 
    SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory(); 
    Criteria criteria = sessionFactory.openSession().createCriteria(Author.class); 
    criteria.add(Restrictions.eq("authorId", authorId)); 
    return (Author) criteria.uniqueResult(); 

} 
public ArrayList<Author> getAllAuthors(){ 
    SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory(); 
    Criteria criteria = sessionFactory.openSession().createCriteria(Author.class); 
    return (ArrayList<Author>) criteria.list(); 
} 

例外：在java.lang.reflect.InvocationTargetException sun.reflect.NativeMethodAccessorImpl：

“致.invoke0（Native Method）at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl .java：62）at sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）at java.lang.reflect.Method.invoke（Method.java:483）at org.glassfish.webservices.monitoring.WebServiceTesterServlet.doPost（ WebServiceTesterServlet.java:313）... 32更多原因：com.sun.xml.ws.fault.ServerSOAPFaultException：客户端从服务器收到SOAP错误：com.sun.enterprise.container.common.spi.util.InjectionException：错误为类创建托管对象：class com.hojat.LibrarySoapWS.ws.AuthorWS请参阅服务器日志以查找有关失败原因的更多详细信息。 com.sun.xml.ws.fault.SOAP11Fault.getProtocolException（SOAP11Fault.java:193）at com.sun.xml.ws.fault.SOAPFaultBuilder.createException（SOAPFaultBuilder.java:131）at com.sun.xml.ws .client.sei.StubHandler.readResponse（StubHandler.java:253）at com.sun.xml.ws.db.DatabindingImpl.deserializeResponse（DatabindingImpl.java:203）at com.sun.xml.ws.db.DatabindingImpl.deserializeResponse （DatabindingImpl.java:290）at com.sun.xml.ws.client.sei.SyncMethodHandler.invoke（SyncMethodHandler.java:119）at com.sun.xml.ws.client.sei.SyncMethodHandler.invoke（SyncMethodHandler.java ：92）at com.sun.xml.ws.client.sei.SEIStub.invoke（SEIStub.java:161）at com.sun.proxy。$ Proxy312.getAllAuthors（Unknown Source）'

Answer 1

问题是服务器端，如您从堆栈跟踪中看到的那样

: Client received SOAP Fault from server: 
com.sun.enterprise.container.common.spi.util.InjectionException: 
Error creating managed object for class: 
class com.hojat.LibrarySoapWS.ws.AuthorWS 
Please see the server log to find more detail regarding exact cause of the failure. 

因此检查服务器日志。