Spring的WEB模块用于整合Web框架，比如Struts 1、Struts 2、JSF等

整合Struts 1

继承方式

Spring框架提供了ActionSupport类支持Struts 1的Action。继承了ActionSupport后就能获取Spring的BeanFactory，从而获得各种Spring容器内的各种资源

import  org.springframework.web.struts.ActionSupport; public class CatAction extends ActionSupport{      public ICatService getCarService(){             return (ICatService) getWebApplicationContext().getBean("catService");      }      public ActionForward execute(ActionMappingmapping,ActionForm form,HttpServletRequest request,HttpServletResponseresponse){             CatForm catForm = (CatForm) form;             if("list".equals(catForm.getAction())){                    returnthis.list(mapping,form,request,response);             }      }       public ActionForward list(ActionMappingmapping,ActionForm form,HttpServletRequest request,HttpServletResponseresponse){             CatForm catForm = (CatForm) form;             ICatService catService =getCatService();             List
       
         catList =catService.listCats();             request.setAttribute("carList",catList);              return mapping.find("list");      }}
       

Spring在web.xml中的配置

       
              
        
         contextConfigLocation
              
        
         /WEB-INF/classes/applicationContext.xml
        
        
       
              
        
                      org.springframework.web.context.ContextLoaderListener      
        
        
       
              
        
         CharacterEncodingFilter
              
        
         org.springframework.web.filter.CharacterEncodingFilter
              
                     
         
          encoding
                      
         
          UTF-8
               
              
                     
         
          forceEncoding
                      
         
          true
               
        
       
             
        
         CharacterEncodingFilter
              
        
         /*
        
       

假设与Hibernate结合使用。须要在web.xml中加入OpenSessionInViewFilter过滤器，将session范围扩大到JSP层。防止抛出延迟载入异常

             
        
         hibernateFilter
              
        
         org.springframework.orm.hibernate3.support. OpenSessionInViewFilter
        
       
             
        
          hibernateFilter
              
        
         *.do
        
        
       

 

代理方式

继承方式融入Spring很easy，可是缺点是代码与Spring发生了耦合，而且Action并没有交给Spring管理。因此不能使用Spring的AOP、IoC特性，使用代理方式则能够避免这些缺陷

 

public class CatAction extends Action{  //此处继承的Struts 1的Action      private ICatService catService；      //setter、getter略       public ActionForward execute(ActionMappingmapping,ActionForm form,HttpServletRequest request,HttpServletResponseresponse){             CatForm catForm = (CatForm) form;             if("list".equals(catForm.getAction())){                    returnthis.list(mapping,form,request,response);             }      }       public ActionForward list(ActionMappingmapping,ActionForm form,HttpServletRequest request,HttpServletResponseresponse){             CatForm catForm = (CatForm) form;             ICatService catService =getCatService();             List
       
         catList =catService.listCats();             request.setAttribute("carList",catList);              return mapping.find("list");      }}
       

这个Action没有与Spring发生耦合。仅仅是定义了一个ICatService属性，然后由Spring负责注入

 

struts-congfig.xml配置

 

web.xml的配置与上面的继承方式同样

 

使用代理方式的Action能够配置拦截器等Spring特性，比如给CatAction配置方法前拦截器和返回后拦截器

             
                     
               
              
        
        
             
                     
               
              
        
        
             
                     
                             
          
            catBeforeInterceptor
                              
          
            catAfterInterceptor
                       
               
              
                     
                             
                       
               
        
       

整合Struts 2

Spring整合Struts 2须要struts2-spring-2.011.jar包

public class CatAction{      private ICatService catService;      private Cat cat;      //setter、getter略       public String list(){             catService.listCats();             return ＂list＂;      }           public String add(){             catService.createCat(cat);             return list();      }}

struts.xml配置

除了正常的配置之外，还须要<contstant/>加入名为struts.objectFactory的常量，把值设为spring。表示该Action由Spring产生。然后把<action/>的class属性改为catAction，Struts 2将会到Spring中寻找名为catAction的bean

        
       
              
         {1}      
         
          /list.jsp
               
         
          /list.jsp
         
        
       

 

Spring配置

 

web.xml配置

       
              
        
         contextConfigLocation
              
        
         /WEB-INF/classes/applicationContext.xml
        
        
       
              
        
                      org.springframework.web.context.ContextLoaderListener      
        
        
             
        
         Struts2
              
        
         org.apache.struts2.dispatcher.FilterDispatcher
        
       
             
        
          Struts2
              
        
         /*