Action调用计数（同步）

import *******；

public class CountAction extends Action{
/*
不适用封装integer使用int的话，需要在synchronize后进行强制转换成integer

*/
    private Integer count=0;
    public ActionForward execute(ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse response)throw Exception{
    synchronize(count){
count++;
}

//不跳转，直接页面显示
PrintWriter out=response.getWriter();
out.println("count="+count);
return null;

}



}