Spring MVC参数方法名称解析器

以下示例显示如何使用Spring Web MVC框架来实现多动作控制器的参数方法名称解析器。 MultiActionController类可在单个控制器中分别映射多个URL到对应的方法。

所下所示配置 -

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; } } 
Java

URL映射配置文件如下 -

class="com.yiibai.springmvc.UserController"> name="methodNameResolver"> class="org.springframework.web.servlet.mvc.multiaction.ParameterMethodNameResolver"> name="paramName" value="action"/> > > > 
XML

例如,使用上面的配置,如果URI:

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

首先,让我们使用Eclipse IDE,并按照以下步骤使用Spring Web Framework开发基于动态表单的Web应用程序:

  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. jsp子文件夹下创建一个视图文件:user.jsp
  4. 最后一步是创建所有源和配置文件的内容并运行应用程序,详细如下所述。

完整的项目文件目录结构如下所示 -

Spring MVC参数方法名称解析器_第1张图片

UserController.java 的代码如下所示 -

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; } } 
Java

ParameterMethodNameResolver-servlet.xml 的代码如下所示 -

xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> class="org.springframework.web.servlet.view.InternalResourceViewResolver"> name="prefix" value="/WEB-INF/jsp/"/> name="suffix" value=".jsp"/> > class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"> name="caseSensitive" value="true" /> > class="com.yiibai.springmvc.UserController"> name="methodNameResolver"> class="org.springframework.web.servlet.mvc.multiaction.ParameterMethodNameResolver"> name="paramName" value="action"/> > > > > 
XML

user.jsp 的代码如下所示 -

<%@ page contentType="text/html; charset=UTF-8" %> > > >User.jsp Page> > > >${message}> > > 
HTML

完成创建源和配置文件后,发布应用程序到Tomcat服务器。

现在启动Tomcat服务器,当访问URL => http://localhost:8080/ParameterMethodNameResolver/user/test.html?action=add , 如果Spring Web应用程序没有问题,应该看到以下结果:

Spring MVC参数方法名称解析器_第2张图片

当访问URL => http://localhost:8080/ParameterMethodNameResolver/user/test.html?action=remove , 如果Spring Web应用程序没有问题,应该看到以下结果:

Spring MVC参数方法名称解析器_第3张图片

转载于:https://www.cnblogs.com/borter/p/9519644.html

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