使用Jersey從一個JSON創建多個JPA持久實體？

Question

也許有人可以指出我的方向是正確的，我潛伏了太久的解決方案..

我使用球衣從POST數據獲取JSON發送到REST服務，並創建一個持久性實體插入我的數據庫。像這樣的東西：

@POST 
@Path("/create") 
@Consumes(MediaType.APPLICATION_JSON) 
@Produces(MediaType.APPLICATION_JSON) 
public Response createRecord(Element element) throws Exception{ 

    violations = validator.validate(element); 

    if (violations.size() > 0) { 

     jsonResponse.setSuccess(false); 
     jsonResponse.setMessage("TODO error message"); 
     jsonResponse.setValidationError(this.getValidationErrorList());  

    } 
    else { 
     try { 
      em.persist(element); 
      em.flush(); 
      } 
     catch (PersistenceException e) { 
      System.out.println(e.getMessage()); 
      jsonResponse.setSuccess(false); 
      jsonResponse.setMessage("TODO error"); 
      } 

    } 

      jsonResponse.setSuccess(true); 
      jsonResponse.setMessage("Success!"); 

    return Response.ok().entity(new ObjectMapper().writeValueAsString(jsonResponse)).build(); 

} 

但是我想從一個JSON構建多個實體是這樣的：

：

[ 
{ 
    "usrcre": 0, 
    "usrmod": 0, 
    "datmod": null, 
    "vaecleint": 40, 
    "vaeelecle": "1fdsfds", 
    "vaevalcle": "fdsf", 
    "vaedsc": "dsfdsf" 
}, 
{ 
    "usrcre": 0, 
    "usrmod": 0, 
    "datmod": null, 
    "vaecleint": 41, 
    "vaeelecle": "1TEST", 
    "vaevalcle": "0003", 
    "vaedsc": "fdgfdgfdg" 
}, 
{ 
    "usrcre": 0, 
    "usrmod": 0, 
    "datmod": null, 
    "vaecleint": 42, 
    "vaeelecle": "1TEST", 
    "vaevalcle": "0004", 
    "vaedsc": "Valeur 0004gfdgfdg" 
}, 
{ 
    "usrcre": 0, 
    "usrmod": 0, 
    "datmod": null, 
    "vaecleint": 43, 
    "vaeelecle": "1TEST", 
    "vaevalcle": "0005", 
    "vaedsc": "Valeur 0005fdgfdgd" 
} 

]

心中已經使用類似的嘗試

public Response createRecord(List<Element> elements) throws Exception 

然後嘗試迭代這個列表並堅持每個元素，但我得到一個：

java.lang.IllegalArgumentException: argument type mismatch 

只要我的方法簽名包含列表或數組。我錯過了什麼嗎？

更新：

這裏，當我試圖訪問列表（我使用的堆棧跟蹤「爲每個」，試圖在上述列表堅持每一個元素，但它似乎總是有一個空元素無論我怎麼把我的JSON）

Warning: StandardWrapperValve[Jersey Web Application]: Servlet.service() for 

servlet Jersey Web Application threw exception 
java.lang.IllegalArgumentException: argument type mismatch 
    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:606) 
    at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81) 
    at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:125) 
    at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:152) 
    at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:91) 
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:346) 
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:341) 
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:101) 
    at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:224) 
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271) 
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267) 
    at org.glassfish.jersey.internal.Errors.process(Errors.java:315) 
    at org.glassfish.jersey.internal.Errors.process(Errors.java:297) 
    at org.glassfish.jersey.internal.Errors.process(Errors.java:267) 
    at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317) 
    at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:198) 
    at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:946) 
    at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:323) 
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:372) 
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:335) 
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:218) 
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160) 
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734) 
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673) 
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174) 
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260) 
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188) 
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191) 
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168) 
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189) 
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114) 
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77) 
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838) 
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544) 
    at java.lang.Thread.run(Thread.java:744) 

編輯：或者，如果有人有不介入解析JSON收到創建集合「元素」一個好的工作環境的想法，我會所有的來信！

Answer 1

好的問題解決了！因此，這裏是「解決方案」：

函數「createRecord」在REST服務中，它從post（@POST）獲取他的數據。我有一個glassfish服務器安裝程序，並在本地執行所有測試。原來，因爲我重啓 GlassFish服務器都沒有，它仍然採取我的老註釋在考慮老污染源（我在Element類有一個@XmlRootElement前一段時間）

所以澤西我的錯配JSON爲Xml數據。因此IllegalArgumentException。我重新啓動服務器，我的「每個」解析元素列表完美！

舊的：「你試過重新啓動嗎？」實際上再次工作。