该应用程序使用的是 JAX-WS 版本 2.2.1，我在其中发现了处理 CustomException 的问题。由于 com.sun.xml.internal.bind.v2.runtime.IllegalAnnotationsException 无法生成类:IllegalAnnotationExceptions 计数为 1。所以我将 JAX WS 的版本更改为 JAX-WS 2.2.8，上述问题得到解决(CustomExceptions 的类已创建)。但是现在我在尝试使用该服务时遇到以下错误:
Dec 20, 2013 2:42:42 AM com.sun.xml.ws.server.sei.TieHandler createResponse
SEVERE: null
java.lang.NullPointerException
at server.service.SampleServiceEndpoint.getItems(SampleServiceEndpoint.java:14)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.sun.xml.ws.api.server.InstanceResolver$1.invoke(InstanceResolver.java:250)
at com.sun.xml.ws.server.InvokerTube$2.invoke(InvokerTube.java:149)
at com.sun.xml.ws.server.sei.SEIInvokerTube.processRequest(SEIInvokerTube.java:88)
at com.sun.xml.ws.api.pipe.Fiber.__doRun(Fiber.java:1136)
at com.sun.xml.ws.api.pipe.Fiber._doRun(Fiber.java:1050)
at com.sun.xml.ws.api.pipe.Fiber.doRun(Fiber.java:1019)
at com.sun.xml.ws.api.pipe.Fiber.runSync(Fiber.java:877)
at com.sun.xml.ws.server.WSEndpointImpl$2.process(WSEndpointImpl.java:420)
at com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit.handle(HttpAdapter.java:687)
at com.sun.xml.ws.transport.http.HttpAdapter.handle(HttpAdapter.java:266)
at com.sun.xml.ws.transport.http.servlet.ServletAdapter.invokeAsync(ServletAdapter.java:225)
at com.sun.xml.ws.transport.http.servlet.WSServletDelegate.doGet(WSServletDelegate.java:161)
at com.sun.xml.ws.transport.http.servlet.WSServletDelegate.doPost(WSServletDelegate.java:197)
at com.sun.xml.ws.transport.http.servlet.WSServlet.doPost(WSServlet.java:81)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1852)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:722)
以下是我的自定义异常类和故障 bean。
public class ConcurrencyException extends Exception {
private ConcurrencyInfoBean faultInfo;
public ConcurrencyException(String message, ConcurrencyInfoBean faultInfo) {
super(message);
this.faultInfo = faultInfo;
}
public ConcurrencyException(String message, ConcurrencyInfoBean faultInfo, Throwable cause) {
super(message, cause);
this.faultInfo = faultInfo;
}
public ConcurrencyInfoBean getFaultInfo() {
return faultInfo;
}
}
public class ConcurrencyInfoBean {
protected String message;
public ConcurrencyInfoBean() {}
public String getMessage() {
return message;
}
public void setMessage(String value) {
this.message = value;
}
}
为其生成以下类:
package client.service.jaxws;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlType;
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name="ConcurrencyException", propOrder={"faultInfo", "message"})
public class ConcurrencyException
{
protected ConcurrencyInfoBean faultInfo;
protected String message;
public ConcurrencyInfoBean getFaultInfo()
{
return this.faultInfo;
}
public void setFaultInfo(ConcurrencyInfoBean paramConcurrencyInfoBean)
{
this.faultInfo = paramConcurrencyInfoBean;
}
public String getMessage()
{
return this.message;
}
public void setMessage(String paramString)
{
this.message = paramString;
}
}
package client.service.jaxws;
import javax.xml.ws.WebFault;
@WebFault(name="ConcurrencyException", targetNamespace="http://service.server/")
public class ConcurrencyException_Exception extends Exception
{
private ConcurrencyException faultInfo;
public ConcurrencyException_Exception(String paramString, ConcurrencyException paramConcurrencyException)
{
super(paramString);
this.faultInfo = paramConcurrencyException;
}
public ConcurrencyException_Exception(String paramString, ConcurrencyException paramConcurrencyException, Throwable paramThrowable)
{
super(paramString, paramThrowable);
this.faultInfo = paramConcurrencyException;
}
public ConcurrencyException getFaultInfo()
{
return this.faultInfo;
}
}
package client.service.jaxws;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlType;
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name="concurrencyInfoBean", propOrder={"message"})
public class ConcurrencyInfoBean
{
protected String message;
public String getMessage()
{
return this.message;
}
public void setMessage(String paramString)
{
this.message = paramString;
}
}
之后我在 Web 服务端点类中获得了 NPE:
@MTOM
@WebService(name = "sampleService")
@SOAPBinding(style = SOAPBinding.Style.DOCUMENT, use = SOAPBinding.Use.LITERAL, parameterStyle=ParameterStyle.WRAPPED)
public class SampleServiceEndpoint extends SpringBeanAutowiringSupport {
@Autowired
LookupService lookupService;
@Autowired
PersistenceService persistenceService;
@WebMethod
public List<Items> getItems() {
return lookupService.getItems(); // Throws NPE
}
@WebMethod
public long updateItem(@WebParam(name = "item") Item item) throws ConcurrencyException{
return persistenceService.updateItem(item);
}
@XmlMimeType("application/octet-stream")
@WebMethod
public DataHandler downloadFaxFile(String filename){
return new DataHandler(new FileDataSource(filename));
}
}
使用Fiddler捕获的请求详情:(请注意User-Agent提到的版本:JAX-WS RI 2.2.4-b01，但实际上我在服务器中使用的是2.2.8。)
POST http://172.16.1.17:8080/sample-server/sampleService HTTP/1.1
Accept: text/xml, multipart/related
Content-Type: multipart/related;start="<rootpart*c42f6a20-3467-47db-9f42-2fd710e98a91@example.jaxws.sun.com>";type="application/xop+xml";boundary="uuid:c42f6a20-3467-47db-9f42-2fd710e98a91";start-info="text/xml"
SOAPAction: "http://service.server/sampleService/getItemsRequest"
User-Agent: JAX-WS RI 2.2.4-b01
Host: 172.16.1.17:8080
Connection: keep-alive
Content-Length: 461
Connection: close
--uuid:c42f6a20-3467-47db-9f42-2fd710e98a91
Content-Id: <rootpart*c42f6a20-3467-47db-9f42-2fd710e98a91@example.jaxws.sun.com>
Content-Type: application/xop+xml;charset=utf-8;type="text/xml"
Content-Transfer-Encoding: binary
<?xml version="1.0" ?><S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/"><S:Body><ns2:getItems xmlns:ns2="http://service.server/"></ns2:getItems></S:Body></S:Envelope>
--uuid:c42f6a20-3467-47db-9f42-2fd710e98a91--
使用 Fiddler 捕获的响应:
HTTP/1.1 500 Internal Server Error
Server: Apache-Coyote/1.1
Content-Type: multipart/related; start="<rootpart*fd6818ff-12f2-490b-b0fe-7d99e1196491@example.jaxws.sun.com>"; type="application/xop+xml"; boundary="uuid:fd6818ff-12f2-490b-b0fe-7d99e1196491"; start-info="text/xml"
Transfer-Encoding: chunked
Date: Sat, 21 Dec 2013 08:30:25 GMT
Connection: close
154
--uuid:fd6818ff-12f2-490b-b0fe-7d99e1196491
Content-Id: <rootpart*fd6818ff-12f2-490b-b0fe-7d99e1196491@example.jaxws.sun.com>
Content-Type: application/xop+xml;charset=utf-8;type="text/xml"
Content-Transfer-Encoding: binary
<?xml version='1.0' encoding='UTF-8'?><S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/"><S:Body>
b5
<S:Fault xmlns:ns4="http://www.w3.org/2003/05/soap-envelope"><faultcode>S:Server</faultcode><faultstring>java.lang.NullPointerException</faultstring></S:Fault></S:Body></S:Envelope>
2f
--uuid:fd6818ff-12f2-490b-b0fe-7d99e1196491--
0
Spring 配置文件: 1.applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
<context:component-scan base-package="server"/>
<import resource="datasource.xml"/>
<import resource="services.xml"/>
</beans>
服务.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"> <bean id="lookupService" class="server.service.LookupServiceImpl"> <property name="statusDAO" ref="statusDAO"/> <property name="utilDAO" ref="utilDAO"/> <property name="logDAO" ref="logDAO"/> <property name="faxHistoryDAO" ref="faxHistoryDAO"/> </bean> <bean id="persistenceService" class="server.service.PersistenceServiceImpl"> <property name="logDAO" ref="logDAO"/> <property name="faxHistoryDAO" ref="faxHistoryDAO"/> </bean> <bean id="adminService" class="server.service.AdminServiceImpl"> <property name="userDAO" ref="userDAO"/> </bean> <bean id="reportService" class="server.service.ReportServiceImpl"> <property name="reportDAO" ref="reportDAO"/> </bean>
环境细节: jdk1.7.0_21、tomcat 7、windows 7
最佳答案
我可以通过修改我的 Web 服务端点类来避免 NPE，但不确定以下解决方案是否最佳，但它对我有用:
@MTOM
@WebService(name = "sampleService")
@SOAPBinding(style = SOAPBinding.Style.DOCUMENT, use = SOAPBinding.Use.LITERAL, parameterStyle=ParameterStyle.WRAPPED)
public class SampleServiceEndpoint extends SpringBeanAutowiringSupport {
@Autowired
LookupService lookupService;
@Autowired
PersistenceService persistenceService;
@WebMethod(exclude=true)
private void initLookupService(){
if(lookupService == null)
processInjectionBasedOnCurrentContext(this);
}
@WebMethod(exclude=true)
private void initPersistenceService(){
if(persistenceService == null)
processInjectionBasedOnCurrentContext(this);
}
@WebMethod
public List<Items> getItems() {
initLookupService();
return lookupService.getItems();
}
@WebMethod
public long updateItem(@WebParam(name = "item") Item item) throws ConcurrencyException{
initPersistenceService()
return persistenceService.updateItem(item);
}
@XmlMimeType("application/octet-stream")
@WebMethod
public DataHandler downloadFaxFile(String filename){
return new DataHandler(new FileDataSource(filename));
}
}
关于java - 将 JAX-WS 版本 2.2.1 升级到 2.2.8 后的 NPE，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/20692167/