SSH integration process , Action can not get an instance of the class

service I configured the spring inside the Action class and service bean:
<-! SysManageImpl ->




<-! SysManagerAction ->




But when I call the method instance sysManage used SysManageImpl Action class , throws a null pointer exception , I did all kinds of tests , show is sysManage no instance of , I asked the teacher, the teacher said it might be Struts2 and Spring integration process has gone wrong , I want to ask Struts2 and Spring integration process what issues need attention , there is no instance of sysManage what is the reason ?

  //Action类
  public class SysManagerAction extends ActionSupport {
   	private static final long serialVersionUID = 1L;
  private HttpServletRequest request;
  private Student student;	
   	private SysManageImpl sysManager;
  //省略各setter和getter方法
  
  public String add(){
  try{	
   			sysManager.sysUpdateStudent(student, operateType);
   			return "addSuccess";
   		}catch (Exception e) {
   			e.printStackTrace();
   			return "addFail";
   		}
   	}
  }
  

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action in providing access to the object you want get and set methods , do not understand why you have to be omitted.
add that sentence is to get inside without a sysManager instance of an object , I think it is not because there is access to an instance of an object , which is automatically paid to the member variables of this class sysManager, it would not be a null pointer a .
I am also a novice, under mutual exchange .
------ Solution ---------------------------------------- ----

bean name="/sysManagerAction"

here is not more than a " / " And you have to pay attention to the Action attribute to inject setter
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If I add the following two statements in the add method can be performed properly, do not throw a null pointer exception

  		AbstractApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
   		sysManager = (SysManageImpl)ctx.getBean("sysManage");
  

so more is definitely not complete instantiation , in the end is why, freshman big knees and begged God enlighten.
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I did not omit , but here a little too much to write .... avoid code , we see tired.

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solved !
indeed Struts2 and Spring integration process out of the question .
In Struts.xml the action configuration , class configured in applicationContext.xml Action should write the bean class id.
The original wording :
After integrating the correct wording :
sysManagerAction which is the bean id.
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well, I resolved, you look at the 4th floor bar.
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If no bean with name id , then use / can.
problem has been resolved out , is struts.xml in the class action should applicationContext.xml the bean 's name or id
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thank landlord solutions. . Scrapped three days. . Blame themselves did not understand the configuration of the three frameworks. .