SpringMVC知识点②(整合SSM)

1、新建一Maven项目！添加web的支持

2、导入相关的pom依赖！

<dependencies>
   
   <dependency>
       <groupId>junitgroupId>
       <artifactId>junitartifactId>
       <version>4.12version>
   dependency>
   
   <dependency>
       <groupId>mysqlgroupId>
       <artifactId>mysql-connector-javaartifactId>
       <version>5.1.47version>
   dependency>
   
   <dependency>
       <groupId>com.mchangegroupId>
       <artifactId>c3p0artifactId>
       <version>0.9.5.2version>
   dependency>

   
   <dependency>
       <groupId>javax.servletgroupId>
       <artifactId>servlet-apiartifactId>
       <version>2.5version>
   dependency>
   <dependency>
       <groupId>javax.servlet.jspgroupId>
       <artifactId>jsp-apiartifactId>
       <version>2.2version>
   dependency>
   <dependency>
       <groupId>javax.servletgroupId>
       <artifactId>jstlartifactId>
       <version>1.2version>
   dependency>

   
   <dependency>
       <groupId>org.mybatisgroupId>
       <artifactId>mybatisartifactId>
       <version>3.5.2version>
   dependency>
   <dependency>
       <groupId>org.mybatisgroupId>
       <artifactId>mybatis-springartifactId>
       <version>2.0.2version>
   dependency>

   
   <dependency>
       <groupId>org.springframeworkgroupId>
       <artifactId>spring-webmvcartifactId>
       <version>5.1.9.RELEASEversion>
   dependency>
   <dependency>
       <groupId>org.springframeworkgroupId>
       <artifactId>spring-jdbcartifactId>
       <version>5.1.9.RELEASEversion>
   dependency>
dependencies>

3、Maven资源过滤设置

<build>
   <resources>
       <resource>
           <directory>src/main/javadirectory>
           <includes>
               <include>**/*.propertiesinclude>
               <include>**/*.xmlinclude>
           includes>
           <filtering>falsefiltering>
       resource>
       <resource>
           <directory>src/main/resourcesdirectory>
           <includes>
               <include>**/*.propertiesinclude>
               <include>**/*.xmlinclude>
           includes>
           <filtering>falsefiltering>
       resource>
   resources>
build>

4、建立基本结构和配置框架！

mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
DOCTYPE configuration
       PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
       "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

configuration>

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>

Mybatis层编写

1、数据库配置文件 database.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=123456

2、IDEA关联数据库

3、编写MyBatis的核心配置文件

<?xml version="1.0" encoding="UTF-8" ?>
DOCTYPE configuration
       PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
       "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
   
   <typeAliases>
       <package name="com.kuang.pojo"/>
   typeAliases>
   <mappers>
       <mapper resource="com/kuang/dao/BookMapper.xml"/>
   mappers>

configuration>

4、编写数据库对应的实体类 com.kuang.pojo.Books

5、编写Dao层的 Mapper接口！

6、编写接口对应的 Mapper.xml 文件。需要导入MyBatis的包；

<?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="com.kuang.dao.BookMapper">

   
   <insert id="addBook" parameterType="Books">
      insert into ssmbuild.books(bookName,bookCounts,detail)
      values (#{bookName}, #{bookCounts}, #{detail})
   insert>

   
   <delete id="deleteBookById" parameterType="int">
      delete from ssmbuild.books where bookID=#{bookID}
   delete>

   
   <update id="updateBook" parameterType="Books">
      update ssmbuild.books
      set bookName = #{bookName},bookCounts = #{bookCounts},detail = #{detail}
      where bookID = #{bookID}
   update>

   
   <select id="queryBookById" resultType="Books">
      select * from ssmbuild.books
      where bookID = #{bookID}
   select>

   
   <select id="queryAllBook" resultType="Books">
      SELECT * from ssmbuild.books
   select>

mapper>

7、编写Service层的接口和实现类

Spring层

1、配置Spring整合MyBatis，我们这里数据源使用c3p0连接池；

2、我们去编写Spring整合Mybatis的相关的配置文件；spring-dao.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.xsd
       http://www.springframework.org/schema/context
       https://www.springframework.org/schema/context/spring-context.xsd">

   
   
   <context:property-placeholder location="classpath:database.properties"/>

   
   
   <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
       
       <property name="driverClass" value="${jdbc.driver}"/>
       <property name="jdbcUrl" value="${jdbc.url}"/>
       <property name="user" value="${jdbc.username}"/>
       <property name="password" value="${jdbc.password}"/>

       
       <property name="maxPoolSize" value="30"/>
       <property name="minPoolSize" value="10"/>
       
       <property name="autoCommitOnClose" value="false"/>
       
       <property name="checkoutTimeout" value="10000"/>
       
       <property name="acquireRetryAttempts" value="2"/>
   bean>

   
   <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
       
       <property name="dataSource" ref="dataSource"/>
       
       <property name="configLocation" value="classpath:mybatis-config.xml"/>
   bean>

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

beans>

此处需留意，在之前的mybatis-spring中，dao层接口会有一个对应的实现类，然后手动将该类注入到Spring容器中，该类主要是为了获取SqlSession或者SqlSessionTemplate对象，用此对象的getMapper()方法来获取接口对象。但是此处是使用MapperScannerConfigurer类来动态实现Dao接口的注入。

3、Spring整合service层 spring-service.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.xsd
   http://www.springframework.org/schema/context
   http://www.springframework.org/schema/context/spring-context.xsd">

   
   <context:component-scan base-package="com.kuang.service" />

   
   <bean id="BookServiceImpl" class="com.kuang.service.BookServiceImpl">
       <property name="bookMapper" ref="bookMapper"/>
   bean>

   
   <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
       
       <property name="dataSource" ref="dataSource" />
   bean>

beans>

SpringMVC层

1、web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
        version="4.0">

   
   <servlet>
       <servlet-name>DispatcherServletservlet-name>
       <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
       <init-param>
           <param-name>contextConfigLocationparam-name>
             
           <param-value>classpath:applicationContext.xmlparam-value>
       init-param>
       <load-on-startup>1load-on-startup>
   servlet>
   <servlet-mapping>
       <servlet-name>DispatcherServletservlet-name>
       <url-pattern>/url-pattern>
   servlet-mapping>

   
   <filter>
       <filter-name>encodingFilterfilter-name>
       <filter-class>
          org.springframework.web.filter.CharacterEncodingFilter
       filter-class>
       <init-param>
           <param-name>encodingparam-name>
           <param-value>utf-8param-value>
       init-param>
   filter>
   <filter-mapping>
       <filter-name>encodingFilterfilter-name>
       <url-pattern>/*url-pattern>
   filter-mapping>
   
   
   <session-config>
       <session-timeout>15session-timeout>
   session-config>
   
web-app>

2、spring-mvc.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
   https://www.springframework.org/schema/mvc/spring-mvc.xsd">

   
   
   <mvc:annotation-driven />
   
   <mvc:default-servlet-handler/>

   
   <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
       <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
       <property name="prefix" value="/WEB-INF/jsp/" />
       <property name="suffix" value=".jsp" />
   bean>

   
   <context:component-scan base-package="com.kuang.controller" />

beans>

3、Spring配置整合文件，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">

   <import resource="spring-dao.xml"/>
   <import resource="spring-service.xml"/>
   <import resource="spring-mvc.xml"/>
   
beans>

java springMvc

SpringMVC知识点②(整合SSM)

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