Spring的WEB模块用于整合Web框架，例如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
            
      
       /*
      
     

如果与Hibernate结合使用，需要在web.xml中添加OpenSessionInViewFilter过滤器，将session范围扩大到JSP层，防止抛出延迟加载异常

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

 

代理方式

继承方式融入Spring非常简单，但是缺点是代码与Spring发生了耦合，并且Action并没有交给Spring管理，因此不能使用Spring的AOP、IoC特性，使用代理方式则可以避免这些缺陷

 

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，只是定义了一个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相同

 

使用代理方式的Action可以配置拦截器等Spring特性，例如给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需要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，还需要<contstant/>添加名为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
            
      
       /*