web.xml 简记

2022-09-20 08:18:42

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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