SpringMVC系列教程－案例01

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Spring

一、增加必要的类库

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.lansene</groupId>
    <artifactId>springmvc1</artifactId>
    <packaging>war</packaging>
    <version>0.0.1-SNAPSHOT</version>
    <name>springmvc1 Maven Webapp</name>
    <url>http://maven.apache.org</url>

    <properties>
        <spring.version>4.2.0.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-webmvc</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>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

        <dependency>
            <groupId>taglibs</groupId>
            <artifactId>standard</artifactId>
            <version>1.1.2</version>
        </dependency>

        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
    </dependencies>
    <build>
        <finalName>springmvc1</finalName>
    </build>
</project>

二、创建需要的JSP文件

WEB-INF/views/system/userAdd.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>系统管理->用户增加</title>
    </head>
    <body>
    <form id="systemUserAdd" action="userSave.action" method="post">
        <table>
            <tr>
                <td>用户名称:</td>
		<td><input type="text" name="username"></td>
            </tr>
            <tr>
                <td>登录密码:</td>
                <td><input type="text" name="password"></td>
            </tr>
            <tr>
                <td>&nbsp;</td>
                <td><input type="submit" value="添加"> <input type="reset" value="重置"></td>
            </tr>
        </table>
    </form>
    </body>
</html>

WEB-INF/views/system/success.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Insert title here</title>
    </head>
    <body>
        <table>
            <tr>
                <td>用户名称:</td>
                <td>${user.username}</td>
            </tr>
            <tr>
                <td>登录密码:</td>
                <td>${user.password}</td>
            </tr>
        </table>
    </body>
</html>

三、创建需要的Java文件

package com.lansene.system.data;

public class User {
	private String userid;
	private String username;
	private String password;
	// getter setter
}

package com.lansene.system.action;

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

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

public class UserAddAction implements Controller {
	private static final Log logger = LogFactory.getLog(UserSaveAction.class);

	@Override
	public ModelAndView handleRequest(HttpServletRequest arg0, HttpServletResponse arg1) throws Exception {
		logger.info("准备显示增加页面");
		return new ModelAndView("system/userAdd.jsp");
	}
}

package com.lansene.system.action;

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

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

import com.lansene.system.data.User;

public class UserSaveAction implements Controller {
	private static final Log logger = LogFactory.getLog(UserSaveAction.class);
	
	@Override
	public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
		logger.info("保存用户信息");
		
		String username = request.getParameter("username");
		String password = request.getParameter("password");
		
		logger.info("username: " + username);
		logger.info("password: " + password);
		
		User user = new User();
		user.setUsername(username);
		user.setPassword(password);
		
		return new ModelAndView("system/success.jsp","user",user);
	}
}

四、创建Spring配置文件

CLASS_PATH/config/spring_system_config.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-4.2.xsd">
    <bean name="/system/userAdd.action" class="com.lansene.system.action.UserAddAction"/>
    <bean name="/system/userSave.action" class="com.lansene.system.action.UserSaveAction"/>
    <bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <property name="prefix" value="/WEB-INF/views/"/>
        <!--<property name="suffix" value=".jsp"/>-->
    </bean>
</beans>

五、修改WEB部署文件，web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    version="2.5">

    <display-name>SpringMVC1</display-name>

    <!-- Spring字符集过滤器 -->
    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!-- Spring的Log4j监听器 -->
    <listener>
        <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
    </listener>

    <!-- 设置Spring的核心控制器 -->
    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath*:config/spring_*.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>*.action</url-pattern>
    </servlet-mapping>
</web-app>

六、测试访问

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