SpringMVC(五)

文章目录

• • Spring MVC多动作控制器
  • Spring MVC多动作控制器样例
  • Spring MVC属性方法名称解析器
  • Spring MVC属性方法名称解析器样例
  • Spring MVC参数方法名称解析器
  • Spring MVC参数方法名称解析器样例
  • Spring MVC可参数化的视图控制器
  • Spring MVC可参数化的视图控制器样例

Spring MVC多动作控制器

1. MultiActionController类用于在单个控制器中分别映射多个URL到对应的方法。

package com.yiibai.springmvc;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;

public class UserController extends MultiActionController{

   public ModelAndView home(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("home");
      model.addObject("message", "Home");
      return model;
   }

   public ModelAndView add(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "Add");
      return model;
   }

   public ModelAndView remove(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "Remove");
      return model;
   }
}

URL映射配置文件

1. 对于/home.html请求，DispatcherServlet将请求转发到UserController类的 home()方法。
2. 对于user/add.html，DispatcherServlet将请求转发到UserController类的 add()方法。
3. 对于user/remove.html，DispatcherServlet将请求转发到UserController类的 remove()方法。

Spring MVC多动作控制器样例

1. 创建一个名称为 MultiActionController的动态WEB项目
2. 在 com.yiibai.springmvc包下创建一个Java类UserController。
3. 在jsp子文件夹下创建两个视图文件：home.jsp 和 user.jsp

UserController.java

package com.yiibai.springmvc;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;

public class UserController extends MultiActionController{

   public ModelAndView home(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("home");
      model.addObject("message", "Home");
      return model;
   }

   public ModelAndView add(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "Add");
      return model;
   }

   public ModelAndView remove(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "Remove");
      return model;
   }
}

MultiActionController-servlet.xml

home.jsp

<%@ page contentType="text/html; charset=UTF-8" %>







add()方法 

remove()方法

user.jsp

<%@ page contentType="text/html; charset=UTF-8" %>





   
${message}
  

Spring MVC属性方法名称解析器

1. MultiActionController类可在单个控制器中分别映射多个URL到对应的方法

package com.yiibai.springmvc;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;

public class UserController extends MultiActionController{

   public ModelAndView home(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "主页面(Home方法)");
      return model;
   }

   public ModelAndView add(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "添加(Add方法)");
      return model;
   }

   public ModelAndView remove(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "删除(Remove方法)");
      return model;
   }
}

URL映射配置文件

   
      
         
            
               home
               add
               update      
            
         
      
   

1. 对于/user/home.html请求，DispatcherServlet将请求转发到UserController类的 home()方法
2. 对于user/add.html，DispatcherServlet将请求转发到UserController类的add()方法。
3. 对于user/remove.html，DispatcherServlet将请求转发到UserController类的 remove()方法

Spring MVC属性方法名称解析器样例

1. 创建一个名称为 PropertiesMethodNameResolver 的动态WEB项目。
2. 在 com.yiibai.springmvc 包下创建一个Java类UserController。
3. 在jsp子文件夹下创建一个视图文件：user.jsp。

UserController.java

package com.yiibai.springmvc;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;

public class UserController extends MultiActionController{

   public ModelAndView home(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "主页面(Home方法)");
      return model;
   }

   public ModelAndView add(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "添加(Add方法)");
      return model;
   }

   public ModelAndView remove(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "删除(Remove方法)");
      return model;
   }
}

PropertiesMethodNameResolver-servlet.xml

   
      
      
   

    
      
   
   
      
      
         
            
               home
               add
               remove
            
         
      
      
     

user.jsp

<%@ page contentType="text/html; charset=UTF-8" %>





   
${message}
  

Spring MVC参数方法名称解析器

1. MultiActionController类可在单个控制器中分别映射多个URL到对应的方法

package com.yiibai.springmvc;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;

public class UserController extends MultiActionController{

   public ModelAndView home(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "Home");
      return model;
   }

   public ModelAndView add(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "Add");
      return model;
   }

   public ModelAndView remove(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "Remove");
      return model;
   }
}

URL映射配置文件

1. 对于/user/*.html?action=home请求，DispatcherServlet将请求转发到UserController类的 home()方法。
2. 对于/user/*.html?action=add，DispatcherServlet将请求转发到UserController类的 add()方法。
3. 对于/user/*.html?action=remove，DispatcherServlet将请求转发到UserController类的 remove()方法

Spring MVC参数方法名称解析器样例

1. 创建一个名称为 ParameterMethodNameResolver 的动态WEB项目
2. 在 com.yiibai.springmvc 包下创建一个Java类UserController
3. 在jsp子文件夹下创建一个视图文件：user.jsp

UserController.java

package com.yiibai.springmvc;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;

public class UserController extends MultiActionController{

   public ModelAndView home(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "主页面(Home)");
      return model;
   }

   public ModelAndView add(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "添加(Add方法)");
      return model;
   }

   public ModelAndView remove(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "删除(Remove方法)");
      return model;
   }
}

ParameterMethodNameResolver-servlet.xml

user.jsp

<%@ page contentType="text/html; charset=UTF-8" %>





   
${message}
  

Spring MVC可参数化的视图控制器

1. 可参数化视图允许将请求映射到网页。

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;

public class UserController extends MultiActionController{

   public ModelAndView home(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "Home");
      return model;
   } 
}

URL映射配置文件

   
      
         index.html=userController
      
   


   

1. 对于/index.html请求，DispatcherServlet会将请求转发到UserController控制器，并将viewName设置为index.jsp。

Spring MVC可参数化的视图控制器样例

1. 创建一个名称为 ParameterizableViewController 的动态WEB项目
2. 在 com.yiibai.springmvc 包下创建一个Java类UserController
3. 在jsp子文件夹下创建一个视图文件：index.jsp

UserController.java

package com.yiibai.springmvc;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;

public class UserController extends MultiActionController{

   public ModelAndView home(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "Home");
      return model;
   }
}

ParameterizableViewController-servlet.xml

   
      
      
   

   
      
         
            index.html=userController
         
      
   
   
      
   

index.jsp

<%@ page contentType="text/html; charset=UTF-8" %>





   
This is index.jsp page.