springmvc一个Controller类处理多个请求被遗弃的方式MultiActionController详解和新的方式

MultiActionController这个在spring3.x中大行其道,spring4.x被遗弃,终于在spring5.x中被删除了.但是有些老的项目还是有在使用,这里介绍下其用法和新的替换方式.

MultiActionController方式

创建MultiActionController实现类(因为是一个简单的例子没有使用视图解析器)

package com.ultra.web;

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

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

/**
 * xml方式一个类处理多个请求
 *
 * @author fan
 * @date 2020/4/17
 */
@Deprecated
public class HelloMultiActionController extends MultiActionController {

    public ModelAndView hello(HttpServletRequest request, HttpServletResponse response) {
        ModelAndView modelAndView = new ModelAndView("/WEB-INF/views/hello.jsp");
        modelAndView.addObject("mess", "hello, I implemented the MultiActionController that was Deprecated!");
        return modelAndView;
    }

    public ModelAndView hi(HttpServletRequest request, HttpServletResponse response) {
        ModelAndView modelAndView = new ModelAndView("/WEB-INF/views/hello.jsp");
        modelAndView.addObject("mess", "hi, I implemented the MultiActionController that was Deprecated!");
        return modelAndView;
    }
}

注册Controller和映射关系(dispatcherServlet-servlet.xml)

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                <prop key="/multi/hello">helloMultiActionController</prop>
                <prop key="/multi/hi">helloMultiActionController</prop>
            </props>
        </property>
    </bean>

    <bean id="helloMultiActionController" class="com.ultra.web.HelloMultiActionController">
        <property name="methodNameResolver" ref="methodNameResolver"/>
    </bean>
    <bean id="methodNameResolver" class="org.springframework.web.servlet.mvc.multiaction.PropertiesMethodNameResolver">
        <property name="mappings">
            <props>
                <prop key="/multi/hello">hello</prop>
                <prop key="/multi/hi">hi</prop>
            </props>
        </property>
    </bean>

</beans>

请求页面index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>index</title>
</head>
<body>
<a href="/simple/multi/hello">multi hello</a><br><br>
<a href="/simple/multi/hi">multi hi</a><br><br>
</body>
</html>

响应页面/WEB-INF/views/hello.jsp

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8" isELIgnored="false" %>
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Spring MVC</title>
</head>
<body>
<h1>${mess}</h1>
</body>
</html>

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       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.xsd">

</beans>

pom.xml(引入jar包配置)

    <properties>
        <spring.version>4.3.17.RELEASE</spring.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.7</version>
        </dependency>
        <dependency>
            <groupId>javax.validation</groupId>
            <artifactId>validation-api</artifactId>
            <version>1.1.0.Final</version>
        </dependency>
        <dependency>
            <groupId>org.mockito</groupId>
            <artifactId>mockito-core</artifactId>
            <version>1.10.19</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-core</artifactId>
            <version>1.2.3</version>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-to-slf4j</artifactId>
            <version>2.10.0</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
        </dependency>
    </dependencies>

web.xml

<!DOCTYPE web-app PUBLIC
        "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
        "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
    <display-name>Archetype Created Web Application</display-name>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <!-- 默认:/WEB-INF/applicationContext.xml -->
        <param-value>/WEB-INF/applicationContext.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <!-- 默认:/WEB-INF/{servlet-name}-servlet.xml -->
            <param-value>/WEB-INF/dispatcherServlet-servlet.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

整体目录结构

springmvc一个Controller类处理多个请求被遗弃的方式MultiActionController详解和新的方式_第1张图片

测试

前台页面(这页面真吃藕…确实.)

springmvc一个Controller类处理多个请求被遗弃的方式MultiActionController详解和新的方式_第2张图片

响应页面

springmvc一个Controller类处理多个请求被遗弃的方式MultiActionController详解和新的方式_第3张图片springmvc一个Controller类处理多个请求被遗弃的方式MultiActionController详解和新的方式_第4张图片

注解方式,让一个普通类当Controller并处理多个请求

创建普通类并添加处理请求的注解

package com.ultra.web;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

/**
 * 普通类当处理器,并处理多个请求
 *
 * @author fan
 * @date 2020/4/17
 */
@Controller
@RequestMapping("/plain")
public class PlainOrdinaryController {

    @GetMapping("/hello")
    public ModelAndView hello() {
        ModelAndView modelAndView = new ModelAndView("/WEB-INF/views/hello.jsp");
        modelAndView.addObject("mess", "hello, I am a plain ordinary object!");
        return modelAndView;
    }

    @GetMapping("/hi")
    public ModelAndView hi() {
        ModelAndView modelAndView = new ModelAndView("/WEB-INF/views/hello.jsp");
        modelAndView.addObject("mess", "hi, I am a plain ordinary object!");
        return modelAndView;
    }
}

添加注解扫描

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                <prop key="/hello">helloController</prop>
                <prop key="/multi/hello">helloMultiActionController</prop>
                <prop key="/multi/hi">helloMultiActionController</prop>

            </props>
        </property>
    </bean>
    <bean id="helloController" class="com.ultra.web.HelloController"/>

    <bean id="helloMultiActionController" class="com.ultra.web.HelloMultiActionController">
        <property name="methodNameResolver" ref="methodNameResolver"/>
    </bean>
    <bean id="methodNameResolver" class="org.springframework.web.servlet.mvc.multiaction.PropertiesMethodNameResolver">
        <property name="mappings">
            <props>
                <prop key="/multi/hello">hello</prop>
                <prop key="/multi/hi">hi</prop>
            </props>
        </property>
    </bean>

    <!--使用@Controller注解需要的配置-->
    <context:component-scan base-package="com.ultra.web"/>
    <!--使用@RequestMapping等注解-->
    <mvc:annotation-driven/>
</beans>

请求页面index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>index</title>
</head>
<body>
<a href="/simple/plain/hello">plain ordinary hello</a><br><br>
<a href="/simple/plain/hi">plain ordinary hi</a><br><br>
<a href="/simple/multi/hello">multi hello</a><br><br>
<a href="/simple/multi/hi">multi hi</a><br><br>
</body>
</html>

测试

前台页面

springmvc一个Controller类处理多个请求被遗弃的方式MultiActionController详解和新的方式_第5张图片

响应页面

springmvc一个Controller类处理多个请求被遗弃的方式MultiActionController详解和新的方式_第6张图片springmvc一个Controller类处理多个请求被遗弃的方式MultiActionController详解和新的方式_第7张图片

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