带有 JAXB 的 JAX Web 服务使用循环返回多个值

Question

我编写了一个返回 5 个值的网络服务：

String taskPresentationName_UWL = null; 
String taskActivationTime_UWL = null;   
String taskPriority_UWL = null; 
String taskStatus_UWL = null;   
String taskID_UWL = null;

我的情况是我运行一个循环，我想返回一个包含这些值的列表或数组。

因为它现在是代码，所以我只得到 1 行作为答案。例如：

taskPresentationName_test1、taskActivationTime_test1、taskPriority_test1、taskStatus_test1、taskID_test1

但我想返回的答案应该如下所示：

taskPresentationName_test1，taskActivationTime_test1， taskPriority_test1, taskStatus_test1,taskID_test1

taskPresentationName_test2，taskActivationTime_test2， taskPriority_test2, taskStatus_test2,taskID_test2

....

如何将答案返回到列表或 Xml？

我的代码如下

@WebService(name = "getUWLTasks", portName = "getUWLTasksPort", serviceName = "getUWLTasksService", targetNamespace = "http://sap.com/tutorial/testAPI/")
@Stateless
public class getUWLTasks
{
   @WebMethod(operationName = "getTasks", exclude = false)
   public void getTasks(
      @WebParam(name = "taskPresentationName", mode = WebParam.Mode.OUT) Holder<String> taskPresentationName,
      @WebParam(name = "taskActivationTime", mode = WebParam.Mode.OUT) Holder<String> taskActivationTime,
      @WebParam(name = "taskPriority", mode = WebParam.Mode.OUT) Holder<String> taskPriority,
      @WebParam(name = "taskStatus", mode = WebParam.Mode.OUT) Holder<String> taskStatus,
      @WebParam(name = "taskID", mode = WebParam.Mode.OUT) Holder<String> taskID) {

      String taskPresentationName_UWL = null;
      String taskActivationTime_UWL = null;
      String taskPriority_UWL = null;
      String taskStatus_UWL = null;

      String taskID_UWL = null;

      try
      {    
         TaskInstanceManager taskInstanceManager = BPMFactory.getTaskInstanceManager();
         HashSet<Status> statuses = new HashSet<Status>();
         statuses.add(Status.READY);
         statuses.add(Status.RESERVED);
         statuses.add(Status.IN_PROGRESS);

         Set<TaskAbstract> myTasks = taskInstanceManager.getMyTaskAbstracts(statuses);
         Iterator<TaskAbstract> taskIter = myTasks.iterator();

         while (taskIter.hasNext())
         {    
            TaskAbstract ta = taskIter.next();

            //Get the UWL as it appears        

            java.net.URI taskInstanceId = ta.getId();

            URL taskExecutionURL = taskInstanceManager.generateTaskExecutionUrl(taskInstanceId);
            TaskDetail taskDetail = taskInstanceManager.getTaskDetail(taskInstanceId);

            taskPresentationName_UWL = ta.getPresentationName();
            taskActivationTime_UWL = ta.getCreatedTime().toString();
            taskPriority_UWL = ta.getPriority().toString();
            taskStatus_UWL = ta.getStatus().toString();

            taskID_UWL = ta.getId().toString();

            taskPresentationName.value = taskPresentationName_UWL;
            taskActivationTime.value = taskActivationTime_UWL;
            taskPriority.value = taskPriority_UWL;
            taskStatus.value = taskStatus_UWL;

            taskID.value = taskID_UWL;    
         }
      }
      catch (BPMException e)
      {    
         // TODO Auto-generated catch block
         e.printStackTrace();    
      }
   }
}

Answer 1

我写简单的 WS，一切如你所愿

@WebMethod(operationName = "getTasks", exclude = false)
   public void getTasks(
      @WebParam(name = "taskPresentationName", mode = WebParam.Mode.OUT) Holder<String[]> taskPresentationName,
      @WebParam(name = "taskActivationTime", mode = WebParam.Mode.OUT) Holder<String[]> taskActivationTime,
      @WebParam(name = "taskPriority", mode = WebParam.Mode.OUT) Holder<String[]> taskPriority,
      @WebParam(name = "taskStatus", mode = WebParam.Mode.OUT) Holder<String[]> taskStatus,
      @WebParam(name = "taskID", mode = WebParam.Mode.OUT) Holder<String[]> taskID)
          {
             taskPresentationName.value = new String[]{"a1", "a2"}; 
             taskActivationTime.value = new String[]{"b1", "b2"};
             taskPriority.value = new String[]{"c1", "c2"};
          }  

回复包含

 <taskPresentationName>a1</taskPresentationName>
 <taskPresentationName>a2</taskPresentationName>
     <taskActivationTime>b1</taskActivationTime>
 <taskActivationTime>b2</taskActivationTime>
     <taskPriority>c1</taskPriority>
 <taskPriority>c2</taskPriority>  

编辑

@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class Task 
{
   String taskPresentationName_UWL;
   //...
   String taskID_UWL;

   // getters, setters
}  

任务

@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class Tasks
{
   @XmlElement
   private List<Task> tasks = new ArrayList<Task>(); 

   public List<Task> getTasks()
   {
      return tasks;
   }
}  

网络方法

@WebMethod(operationName = "getTasks", exclude = false)
@WebResult(name = "tasks")
public Tasks getTasks() {  
//...  
}