带有复合（两部分）主键的Glassfish/PostgreSQL表生成com.sun.jersey.spi.inject.errors

Question

• abstractfacade.java
• TestTable.java
• TestTableRest.java
• TestTablePK.java

部署到服务器，并选择“测试RESTful Web服务”，测试页面无法加载：

exception 
javax.servlet.ServletException: PWC1391: Servlet.init() for servlet org.netbeans.rest.application.config.ApplicationConfig threw exception

root cause 
com.sun.jersey.spi.inject.Errors$ErrorMessagesException

查看glassfish事件日志,有两个严重错误：

The following errors and warnings have been detected with resource and/or provider classes:
SEVERE: Missing dependency for method public void service.TesttableFacadeREST.remove(service.TesttablePK) at parameter at index 0
SEVERE: Method, public void service.TesttableFacadeREST.remove(service.TesttablePK), annotated with DELETE of resource, class service.TesttableFacadeREST, is not recognized as valid resource method.
SEVERE: Missing dependency for method public service.Testtable service.TesttableFacadeREST.find(service.TesttablePK) at parameter at index 0
SEVERE: Method, public service.Testtable service.TesttableFacadeREST.find(service.TesttablePK), annotated with GET of resource, class service.TesttableFacadeREST, is not recognized as valid resource method. 

WebModule[/tabletest]StandardWrapper.Throwable com.sun.jersey.spi.inject.Errors$ErrorMessagesException
    at com.sun.jersey.spi.inject.Errors.processErrorMessages(Errors.java:170)
    at com.sun.jersey.spi.inject.Errors.postProcess(Errors.java:136)
    at com.sun.jersey.spi.inject.Errors.processWithErrors(Errors.java:199)
    at com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:771)
    at com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:766)
    at com.sun.jersey.spi.container.servlet.ServletContainer.initiate(ServletContainer.java:488)
    at com.sun.jersey.spi.container.servlet.ServletContainer$InternalWebComponent.initiate(ServletContainer.java:318)
    at com.sun.jersey.spi.container.servlet.WebComponent.load(WebComponent.java:609)
    at com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:210)
    at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:373)
    at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:556)
    at javax.servlet.GenericServlet.init(GenericServlet.java:244)
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1453)
    at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:1093)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:189)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
    at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
    at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860)
    at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757)
    at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056)
    at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229)
    at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
    at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
    at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
    at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
    at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
    at java.lang.Thread.run(Thread.java:722) 

在我用NetBeans编写错误报告之前，我只想看看这是否更可能是开发人员的错误，而不是开发人员的工具集的错误。想法？

• 数据库：PostgreSQL 8.4
• 应用程序服务器：Glassfish 3.1.2.2
• IDE：NetBeans 7.2
• JDK:7更新7

Answer 1

出现问题的原因是remove和find方法都使用了TesttablePK类型和@PathParam，但Jersey无法找到将字符串从url转换为这样一个对象的方法。这可以通过修改TesttablePK类型来解决。您有两个选择：

• 添加接受单个字符串参数的构造函数。
• 或添加名为valueOf或fromString的静态方法，该方法接受单个String参数

因此您需要决定如何将复合键表示为字符串并将这样的字符串转换为TesttablePK类型。