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web.xml 简记

web.xml (tomcat启动时读取的配置文件)

首页配置
<welcome-file-list>:index.jsp

servlet配置（<servlet>和<servletmapping>配对出现）
<servlet>
servlet名称
servlet类包路径
servlet初始化参数
参数key：contextConfigLocation
参数值：classpath:spring-servlet.xml，指定servlet初始化的配置文件
指定tomcat容器启动时是否实例化本servlet并调用init方法
<servletmapping>
servlet名称
servlet的url匹配

容器参数配置<context-param>
参数key：contextConfigLocation
参数值：classpath:applicationContext.xml，指定容器参数的配置文件

spring框架监听器配置<listener>
org.springframework.web.context.ContextLoaderListener

////////////////////////////////////////////////////////////////////////////////////////////////////

spring-servlet.xml (指定servlet初始化的配置文件)
启动注解驱动
mvc:annotation-driven
启动包扫描
context:component-scan
添加对模型视图名称的解析
viewClass、prefix、suffix

////////////////////////////////////////////////////////////////////////////////////////////////////

applicationContext.xml （指定容器参数的配置文件）

上下文注解配置
context:annotation-config
启动包扫描
context:component-scan
导入mybatis的配置文件
<import>:spring-mybatis.xml

////////////////////////////////////////////////////////////////////////////////////////////////////

spring-mybatis.xml (数据库配置)

指定配置业务sql的配置文件
classpath:mapper/*.xml
配置事物管理
org.springframework.jdbc.datasource.DataSourceTransactionManager

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 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://java.sun.com/xml/ns/javaee"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
         version="3.0">
  <display-name>Archetype Created Web Application</display-name>
  <welcome-file-list>
    <welcome-file>/index.jsp</welcome-file>
  </welcome-file-list>
  <!-- Spring MVC配置 -->
  <servlet>
    <servlet-name>spring</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!--Spring-servlet.xml config-->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring-servlet.xml</param-value>
    </init-param>
    <!-- load-on-startup元素标记容器是否在启动的时候就加载这个servlet(实例化并调用其init()方法) -->
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>spring</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

  <!--spring listener config-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
</web-app>

index.jsp

<html>
<body>
<h2>Hello World!</h2>
</body>
</html>

spring-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-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd">

    <!-- 启动注解驱动的Spring MVC功能，注册请求url和注解POJO类方法的映射-->
    <mvc:annotation-driven >

    </mvc:annotation-driven>

    <!-- 启动包扫描功能，以便注册带有@Controllers、@service、@repository、@Component等注解的类成为spring的bean -->
    <context:component-scan base-package="Controllers" />
    <!-- 对模型视图名称的解析，在请求时模型视图名称添加前后缀 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <property name="prefix" value="/"/>	<!-- 前缀 -->
        <property name="suffix" value=".jsp"/>	<!-- 后缀 -->
    </bean>
    <!-- 访问静态文件（jpg,js,css）的方法 -->
    <!--<mvc:resources location="/files/" mapping="/files/**" />-->
    <!--<mvc:resources location="/scripts/" mapping="/scripts/**" />-->
    <!--<mvc:resources location="/styles/" mapping="/styles/**" />-->
    <!--<mvc:resources location="/Views/" mapping="/Views/**" />-->
</beans>

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"
        xmlns:context="http://www.springframework.org/schema/context"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <context:annotation-config />
    <!-- 配置component所在的包，自动加载需要管理的Bean -->
    <context:component-scan base-package="Service,Dao" />
    <import resource="spring-mybatis.xml" />
</beans>

spring-mybatis.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 http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">

    <bean id="configProperties" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>classpath:jdbc.properties</value>
            </list>
        </property>
    </bean>

    <!-- 配置数据源 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driverClassName}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <property name="minPoolSize" value="${c3p0.minPoolSize}"/>
        <property name="acquireIncrement" value="${c3p0.acquireIncrement}"/>
        <property name="acquireRetryAttempts" value="${c3p0.acquireRetryAttempts}"/>
        <property name="acquireRetryDelay" value="${c3p0.acquireRetryDelay}"/>
        <property name="autoCommitOnClose" value="${c3p0.autoCommitOnClose}"/>
        <property name="checkoutTimeout" value="${c3p0.checkoutTimeout}"/>
        <property name="idleConnectionTestPeriod" value="${c3p0.idleConnectionTestPeriod}"/>
        <property name="maxIdleTime" value="${c3p0.maxIdleTime}"/>
        <property name="testConnectionOnCheckin" value="${c3p0.testConnectionOnCheckin}"/>
        <property name="maxStatements" value="${c3p0.maxStatements}"/>
        <property name="maxStatementsPerConnection" value="${c3p0.maxStatementsPerConnection}"/>
        <property name="unreturnedConnectionTimeout" value="${c3p0.unreturnedConnectionTimeout}"/>
    </bean>

    <!-- 配置mybatisSqlSessionFactoryBean -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
    </bean>
    <!-- 配置mybatis mapper接口 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="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>

</beans>

StudentMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="Dao.StudentMapper">
    <resultMap id="BaseResultMap" type="Entity.Student">
        <id column="Uid" jdbcType="BINARY" property="uid" />
        <result column="Name" jdbcType="VARCHAR" property="name" />
        <result column="Age" jdbcType="INTEGER" property="age" />
        <result column="ClassId" jdbcType="INTEGER" property="classid" />
    </resultMap>
    <sql id="Base_Column_List">
        Uid, Name, Age, ClassId
    </sql>
    <select id="selectByPrimaryKey" parameterType="byte[]" resultMap="BaseResultMap">
        select
        <include refid="Base_Column_List" />
        from student
        where Uid = #{uid,jdbcType=BINARY}
    </select>
    <select id="selectByCondition" parameterType="Entity.Student" resultMap="BaseResultMap">
        SELECT
        <include refid="Base_Column_List"/>
        from student
        <where>
            1=1
            <if test="uid != null">
                and Uid=#{uid,jdbcType=BINARY}
            </if>
            <if test="name != null">
                and Name=#{name,jdbcType=VARCHAR}
            </if>
            <if test="age != null">
                and Age=#{age,jdbcType=INTEGER}
            </if>
            <if test="classid != null">
                and ClassId=#{classid,jdbcType=INTEGER}
            </if>
        </where>
    </select>
    <delete id="deleteByPrimaryKey" parameterType="byte[]">
        delete from student
        where Uid = #{uid,jdbcType=BINARY}
    </delete>
    <insert id="insert" parameterType="Entity.Student">
        insert into student (Uid, Name, Age,
        ClassId)
        values (#{uid,jdbcType=BINARY}, #{name,jdbcType=VARCHAR}, #{age,jdbcType=INTEGER},
        #{classid,jdbcType=INTEGER})
    </insert>
    <insert id="insertSelective" parameterType="Entity.Student">
        insert into student
        <trim prefix="(" suffix=")" suffixOverrides=",">
            <if test="uid != null">
                Uid,
            </if>
            <if test="name != null">
                Name,
            </if>
            <if test="age != null">
                Age,
            </if>
            <if test="classid != null">
                ClassId,
            </if>
        </trim>
        <trim prefix="values (" suffix=")" suffixOverrides=",">
            <if test="uid != null">
                #{uid,jdbcType=BINARY},
            </if>
            <if test="name != null">
                #{name,jdbcType=VARCHAR},
            </if>
            <if test="age != null">
                #{age,jdbcType=INTEGER},
            </if>
            <if test="classid != null">
                #{classid,jdbcType=INTEGER},
            </if>
        </trim>
    </insert>
    <update id="updateByPrimaryKeySelective" parameterType="Entity.Student">
        update student
        <set>
            <if test="name != null">
                Name = #{name,jdbcType=VARCHAR},
            </if>
            <if test="age != null">
                Age = #{age,jdbcType=INTEGER},
            </if>
            <if test="classid != null">
                ClassId = #{classid,jdbcType=INTEGER},
            </if>
        </set>
        where Uid = #{uid,jdbcType=BINARY}
    </update>
    <update id="updateByPrimaryKey" parameterType="Entity.Student">
        update student
        set Name = #{name,jdbcType=VARCHAR},
        Age = #{age,jdbcType=INTEGER},
        ClassId = #{classid,jdbcType=INTEGER}
        where Uid = #{uid,jdbcType=BINARY}
    </update>
</mapper>

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原文地址：https://www.cnblogs.com/cnblogszs/p/10477252.html