Spring+SpringMVC+MyBatis+Maven整合

2021-08-01 03:29:48

最近看见网上整理的Spring+SpringMVC+MyBatis+Maven太low,正好今天有时间，于是整理了下，那么开始吧！

1、使用的工具

STS下载地址 http://www.springsource.org/downloads/sts-ggts
Tomcat
JDK
Mybatis generator
若使用Eclipse开发(需要配置Maven,Maven配置好后，在命令行下输入mvn -v,显示下图代表配置成功)

2、Generator的结构

首先得有数据库表
src文件夹为生成模型的位置(dao,mapping,model)
generator.xml配置
mybatis-generator-core-1.3.2.jar核心包
生成语句复制，右键在此处打开命令行(注意路径不能用中文)
生成结果如下图所示

3、打开Eclipse新建Maven项目

如图红色箭头所示，选择默认的空间，next

最后Finish

最后生成项目结构如下图所示

项目建立后，首先我会把编码改成utf-8,省的以后有麻烦。
你会发现项目目录没有显示出来，那么我们选择属性如图

这时你会发现目录还是没有变化，那么接下来我们在调试，默认是J2SE-1.5

那么我们在编辑指定一下它，如图

4、项目建立完毕，引入Spring和MyBatis需要的jar包

打开pom.xml

如果引入的时候，记不住groupId和版本号，其实在Eclipse里面有一个如图所示，当然这种方法不好(请看下一种)

那么我们选择手写，打开浏览器输入http://search.maven.org/
记住spring核心包spring-core
mybatis
mybatis-spring
mysql-connector-java
junit
数据源druid
org.aspectj
记住后面还有jar包需要加入

pom.xml代码


<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>dc_zaichi.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <packaging>war</packaging>
    <version>0.0.1-SNAPSHOT</version>
    <name>mybatis Maven Webapp</name>
    <url>http://maven.apache.org</url>
    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>3.2.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>3.2.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>3.2.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.1.1</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.1.1</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.21</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>0.2.9</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.7.1</version>
        </dependency>
        <dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
            <version>1.9.11</version>
        </dependency>
        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.2.2</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>3.0-alpha-1</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.1.26</version>
        </dependency>
    </dependencies>
    <build>
    </build>
</project>

5、配置文件

spring

<?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" 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
">

    <!-- 引入属性文件 -->
    <context:property-placeholder location="classpath:config.properties" />

    <!-- 自动扫描(自动注入) -->
    <context:component-scan base-package="dc_zaichi.service" />


</beans>

spring-mybatis

<?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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="
http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
http://www.springframework.org/schema/tx 
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop 
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
">

    <!-- JNDI方式配置数据源 -->
    <!-- <bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryBean"> <property name="jndiName" value="${jndiName}"></property> </bean> -->

    <!-- 配置数据源 -->
    <bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <property name="url" value="${jdbc_url}" />
        <property name="username" value="${jdbc_username}" />
        <property name="password" value="${jdbc_password}" />

        <!-- 初始化连接大小 -->
        <property name="initialSize" value="0" />
        <!-- 连接池最大使用连接数量 -->
        <property name="maxActive" value="20" />
        <!-- 连接池最大空闲 -->
        <property name="maxIdle" value="20" />
        <!-- 连接池最小空闲 -->
        <property name="minIdle" value="0" />
        <!-- 获取连接最大等待时间 -->
        <property name="maxWait" value="60000" />

        <!-- <property name="poolPreparedStatements" value="true" /> <property name="maxPoolPreparedStatementPerConnectionSize" value="33" /> -->

        <property name="validationQuery" value="${validationQuery}" />
        <property name="testOnBorrow" value="false" />
        <property name="testOnReturn" value="false" />
        <property name="testWhileIdle" value="true" />

        <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
        <property name="timeBetweenEvictionRunsMillis" value="60000" />
        <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
        <property name="minEvictableIdleTimeMillis" value="25200000" />

        <!-- 打开removeAbandoned功能 -->
        <property name="removeAbandoned" value="true" />
        <!-- 1800秒，也就是30分钟 -->
        <property name="removeAbandonedTimeout" value="1800" />
        <!-- 关闭abanded连接时输出错误日志 -->
        <property name="logAbandoned" value="true" />

        <!-- 监控数据库 -->
        <!-- <property name="filters" value="stat" /> -->
        <property name="filters" value="mergeStat" />
    </bean>

    <!-- myBatis文件,这步很重要 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <!-- 自动扫描entity目录, 省掉Configuration.xml里的手工配置 -->
        <property name="mapperLocations" value="classpath:dc_zaichi/mapping/*.xml" />
    </bean>

    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="dc_zaichi.dao" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
    </bean>

    <!-- 配置事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>

    <!-- 注解方式配置事物 -->
     <tx:annotation-driven transaction-manager="transactionManager" />


    <!-- 拦截器方式配置事物 -->
    <tx:advice id="transactionAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="add*" propagation="REQUIRED" />
            <tx:method name="append*" propagation="REQUIRED" />
            <tx:method name="insert*" propagation="REQUIRED" />
            <tx:method name="save*" propagation="REQUIRED" />
            <tx:method name="update*" propagation="REQUIRED" />
            <tx:method name="modify*" propagation="REQUIRED" />
            <tx:method name="edit*" propagation="REQUIRED" />
            <tx:method name="delete*" propagation="REQUIRED" />
            <tx:method name="remove*" propagation="REQUIRED" />
            <tx:method name="repair" propagation="REQUIRED" />
            <tx:method name="delAndRepair" propagation="REQUIRED" />
            <tx:method name="get*" propagation="SUPPORTS" />
            <tx:method name="find*" propagation="SUPPORTS" />
            <tx:method name="load*" propagation="SUPPORTS" />
            <tx:method name="search*" propagation="SUPPORTS" />
            <tx:method name="datagrid*" propagation="SUPPORTS" />

            <tx:method name="*" propagation="SUPPORTS" />
        </tx:attributes>
    </tx:advice>
    <aop:config>
        <aop:pointcut id="transactionPointcut" expression="execution(* dc_zaichi.service..*Impl.*(..))" />
        <aop:advisor pointcut-ref="transactionPointcut" advice-ref="transactionAdvice" />
    </aop:config>


    <!-- 配置druid监控spring jdbc -->
    <bean id="druid-stat-interceptor" class="com.alibaba.druid.support.spring.stat.DruidStatInterceptor">
    </bean>
    <bean id="druid-stat-pointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut" scope="prototype">
        <property name="patterns">
            <list>
                <value>dc_zaichi.service.*</value>
            </list>
        </property>
    </bean>
    <aop:config>
        <aop:advisor advice-ref="druid-stat-interceptor" pointcut-ref="druid-stat-pointcut" />
    </aop:config>

</beans>

log4j.properties文件

log4j.rootLogger=DEBUG,Console,File

log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.Target=System.out
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=[%c]%m%n

log4j.appender.File=org.apache.log4j.RollingFileAppender 
log4j.appender.File.File=mybatis.log
log4j.appender.File.MaxFileSize=10MB
log4j.appender.File.Threshold=ALL
log4j.appender.File.layout=org.apache.log4j.PatternLayout
log4j.appender.File.layout.ConversionPattern=[%p][%d{yyyy-MM-dd HH\:mm\:ss,SSS}][%c]%m%n

config.properties配置文件


#hibernate.dialect=org.hibernate.dialect.OracleDialect
#driverClassName=oracle.jdbc.driver.OracleDriver
#validationQuery=SELECT 1 FROM DUAL
#jdbc_url=jdbc:oracle:thin:@localhost:1521:orcl
#jdbc_username=sypro
#jdbc_password=sypro

#hibernate.dialect=org.hibernate.dialect.MySQLDialect
driverClassName=com.mysql.jdbc.Driver
validationQuery=SELECT 1
jdbc_url=jdbc:mysql://localhost:3306/dc_zaichi?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull
jdbc_username=root
jdbc_password=helei

#hibernate.dialect=org.hibernate.dialect.SQLServerDialect
#driverClassName=net.sourceforge.jtds.jdbc.Driver
#validationQuery=SELECT 1
#jdbc_url=jdbc:jtds:sqlserver://127.0.0.1:1433/sy
#jdbc_username=sa
#jdbc_password=123456

#hibernate.dialect=org.hibernate.dialect.DerbyDialect
#driverClassName=org.apache.derby.jdbc.EmbeddedDriver
#validationQuery=SELECT 1
#jdbc_url=jdbc:derby:sy;create=true
#jdbc_username=sypro
#jdbc_password=sypro

#jndiName=java:comp/env/dataSourceName

hibernate.hbm2ddl.auto=update
hibernate.show_sql=false
hibernate.format_sql=true

sessionInfoName=sessionInfo

uploadFieldName=filedata
uploadFileMaxSize=20971520
uploadFileExts=txt,rar,zip,doc,docx,xls,xlsx,jpg,jpeg,gif,png,swf,wmv,avi,wma,mp3,mid
uploadDirectory=attached

6、这样我们已经将Spring和mybatis完全整合了，接下来上代码

写接口，查询一个资产，肯定要返回一个Asset_Check

package dc_zaichi.service;

import dc_zaichi.model.Asset_Check;


public interface AssetCheckService {
    public   Asset_Check  getAssetCheckById(String id); 
    

}

接下来写实现类

package dc_zaichi.service.Impl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import dc_zaichi.dao.Asset_CheckMapper;
import dc_zaichi.model.Asset_Check;
import dc_zaichi.service.AssetCheckService;
//AssetCheckServiceImpl把他放到spring上下文环境中
@Service("AssetCheckService")
public class AssetCheckServiceImpl implements AssetCheckService{
    
    //AssetCheckServiceImpl处理业务逻辑后，业务逻辑调用数据库，就是dao,也就是mappper,要使用这个mapper，一定要通过spring注入，首先要有get和set方法，那么如何将Asset_CheckMapper 注入到services里面呢？在set方法上加@Autowired注解

//当然了，这个service还是一个普通的类，因为没有放到spring上下文环境当中，自动扫描包后需要一个serviced的注解告诉扫描的那个地方，这个类是一个bean。这样spring上下文在启动的时候，就能加入到spring环境当中了 
    
    private Asset_CheckMapper  asset_CheckMapper;

    public Asset_CheckMapper getAsset_CheckMapper() {
        return asset_CheckMapper;
    }
    //
    @Autowired
    public void setAsset_CheckMapper(Asset_CheckMapper asset_CheckMapper) {
        this.asset_CheckMapper = asset_CheckMapper;
    }
   public Asset_Check getAssetCheckById(String id) {
        // TODO Auto-generated method stub
        return asset_CheckMapper.selectByPrimaryKey(id);
    }

}

7、测试，因为是Maven项目, 在src/test/java目录下建立包名和测试类，通过junit测试

package mybatis.test;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import dc_zaichi.model.Asset_Check;
import dc_zaichi.service.AssetCheckService;

public class TestMyBatis {
    @Test
    public void test1(){
        ApplicationContext ac= 
                new ClassPathXmlApplicationContext(new String[]{"spring.xml","spring-mybatis.xml"});
        AssetCheckService  bean = (AssetCheckService) ac.getBean("AssetCheckService");
    //这个bean就是实现类中的那个service注解
        Asset_Check assetCheckById = bean.getAssetCheckById("1");
        System.out.println(assetCheckById.getAcName());
        
    }
 
}

打印如下

8、设想下，测试类中有一个测试方法我们可以这样写，如果有100个测试方法，那么这个速度难以忍受，因为spring在初始化的时候，即耗资源又耗时间。那么我们可以这样写

package mybatis.test;

import org.junit.Before;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import dc_zaichi.model.Asset_Check;
import dc_zaichi.service.AssetCheckService;

public class TestMyBatis {
    private ApplicationContext ac;
    AssetCheckService  bean;
    
    @Before
    public void before(){
         
        ac=new ClassPathXmlApplicationContext(new String[]{"spring.xml","spring-mybatis.xml"});
        bean = (AssetCheckService) ac.getBean("AssetCheckService");
    }
    
    
    @Test
    public void test1(){
        Asset_Check assetCheckById = bean.getAssetCheckById("1");
        System.out.println(assetCheckById.getAcName());
        
    }
 
}

@Before的作用：在当前这个类所有测试方法之前去执行的这么一个方法。将所有初始化的东西放到这个放到这个方法之内。那么只会执行一次

到此，说明spring和mybatis整合成功

接下里再看一种测试方法：添加spring-test的jar包依赖

package mybatis.test;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import dc_zaichi.model.Asset_Check;
import dc_zaichi.service.AssetCheckService;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:spring.xml",
        "classpath:spring-mybatis.xml" })
public class TestMyBatis {
    private AssetCheckService assetCheckService;

    public AssetCheckService getAssetCheckService() {
        return assetCheckService;
    }

    @Autowired
    public void setAssetCheckService(AssetCheckService assetCheckService) {
        this.assetCheckService = assetCheckService;
    }

    // private ApplicationContext ac;
    // AssetCheckService bean;

    // @Before
    // public void before(){
    //
    // ac=new ClassPathXmlApplicationContext(new
    // String[]{"spring.xml","spring-mybatis.xml"});
    // bean = (AssetCheckService) ac.getBean("AssetCheckService");
    // }
    //

    @Test
    public void test1() {
        Asset_Check assetCheckById = assetCheckService.getAssetCheckById("1");
        System.out.println(assetCheckById.getAcName());

    }

}

9、 导入springMVC的jar包，搜索spring-webmvc

springMVC配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" 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 
http://www.springframework.org/schema/mvc 
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

    <!-- 自动扫描controller包下的所有类，使其认为spring mvc的控制器 -->
    <context:component-scan base-package="dc_zaichi.controller" />

    <!-- 避免IE执行AJAX时,返回JSON出现下载文件 -->
    <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
        <property name="supportedMediaTypes">
            <list>
                <value>text/html;charset=UTF-8</value>
            </list>
        </property>
    </bean>

    <!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射 -->
    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                <ref bean="mappingJacksonHttpMessageConverter" /><!-- json转换器 -->
            </list>
        </property>
    </bean>

    <!-- 对模型视图名称的解析，即在模型视图名称添加前后缀 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/" p:suffix=".jsp" />

    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="defaultEncoding">
            <value>UTF-8</value>
        </property>
        <property name="maxUploadSize">
            <value>32505856</value><!-- 上传文件大小限制为31M，31*1024*1024 -->
        </property>
        <property name="maxInMemorySize">
            <value>4096</value>
        </property>
    </bean>
</beans>

接下来，我们建立一个包，和类如下图

建立Controller类如下图所示

package dc_zaichi.controller;

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

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import dc_zaichi.model.Asset_Check;
import dc_zaichi.service.AssetCheckService;

@Controller
// 加入到springmvc的上下文当中
@RequestMapping("/assetCheckController")
// 这个东西就是访问地址的一个配置
public class AssetCheckController {

    // 比如说执行 http://127.0.0.1:8080/mybatis/assetCheckController.do 访问此控制器

    private AssetCheckService assetCheckService;

    public AssetCheckService getAssetCheckService() {
        return assetCheckService;
    }

    @Autowired
    public void setAssetCheckService(AssetCheckService assetCheckService) {
        this.assetCheckService = assetCheckService;
    }

    @RequestMapping("/showAssetCheck")
    public String showAssetCheck(String id, HttpServletRequest request) {

        // http://localhost:8080/mybatis/assetCheckController.do?id=1
        // 后台接的时候，接到这个id,并且去数据库查找这个资产，也就是AssetCheckController访问数据库，不能直接
        // 访问，得通过业务逻辑service
        // 访问此控制器里的一个方法
        // http://127.0.0.1:8080/mybatis/assetCheckController.showAssetCheck.do

        Asset_Check assetCheckById = assetCheckService.getAssetCheckById(id);
        System.out.println(assetCheckById.getAcName());
        // 把assetCheckById存到Request中
        request.setAttribute("Asset_Check", assetCheckById);
        return "showAssetCheck";// 返回一个jsp,不用howAssetCheck.jsp,已经在spring-mvc中配置好

    }

}

如何启动SpringMVC,修改web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    id="WebApp_ID" version="3.0">
    <display-name>mybatis</display-name>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring.xml,classpath:spring-mybatis.xml</param-value>
    </context-param>
    <filter>
        <description>字符集过滤器</description>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <description>字符集编码</description>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <listener>
        <description>spring监听器</description>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!-- 防止spring内存溢出监听器 -->
    <listener>
        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
    </listener>
    <!-- spring mvc servlet -->
    <servlet>
        <description>spring mvc servlet</description>
        <servlet-name>springMvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <description>spring mvc 配置文件</description>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springMvc</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
    <welcome-file-list>
        <welcome-file>/index.jsp</welcome-file>
    </welcome-file-list>
    <!-- 配置session超时时间，单位分钟 -->
    <session-config>
        <session-timeout>15</session-timeout>
    </session-config>
</web-app>

10、页面

11、ok

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