标签:xml web spring ssm 案例 整合 org mybatis 易懂
ssm框架整合案例,详细简单易懂
1.准备工作
1.1 pom.xml中导入相关依赖
<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.lin</groupId>
<artifactId>ssmbuild_practice</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<dependencies>
<!-- Junit-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<!--数据库驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<!--连接池-->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!--servlet,jsp-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.2</version>
</dependency>
<!--mybatis,mybatis-spring-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.2</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.2</version>
</dependency>
<!--spring-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.1.9.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.9.RELEASE</version>
</dependency>
</dependencies>
<!-- 静态资源导出问题 ,让java/resources下的静态资源能够导出-->
<build>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
</resource>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
</build>
</project>
1.2 项目初步结构
2.整合mybatis
2.1 创建mybatis和spring核心配置文件
2.2 关联数据库
2.3 构建实体类pojo
2.4 写接口操作数据库
2.5 BookMapper.xml中写sql
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!-- 绑定BookMapper-->
<mapper namespace="com.lin.dao.BookMapper">
<insert id="addBook" parameterType="Books">
insert into mybatis.books (bookName, bookCounts, detail)
values (#{bookName},#{bookCounts},#{detail});
</insert>
<delete id="deleteBookById" parameterType="int">
delete from mybatis.books
where bookID = #{bookId}
</delete>
<update id="updateBook" parameterType="Books">
update mybatis.books
set bookName=#{bookName},bookCounts=#{bookCounts},detail=#{detail}
where bookID=#{bookID}
</update>
<select id="queryBookById" resultType="Books">
select * from mybatis.books
where bookID=#{bookId}
</select>
<select id="queryAllBook" resultType="Books">
select * from mybatis.books
</select>
</mapper>
2.6 将BookMapper.xml 绑定到mybatis配置文件
以上都是在写dao层的。
2.7 写业务层
业务层与持久层分离,用户直接调用业务层接口,然后业务层调持久层
至此,mybatis整合完毕。
3.整合spring
3.1 整合dao层
创建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">
<!-- 1.关联数据库配置文件-->
<context:property-placeholder location="classpath:database.properties"/>
<!-- 2.连接池
dbcp:半自动化,不能自动连接
c3p0:自动化操作(自动化的加载配置文件,并且可以自动设置到对象中)
druid
hikari
-->
<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}"/>
<!--c3p0私有属性-->
<property name="maxPoolSize" value="30"/>
<property name="minPoolSize" value="10"/>
<!--关闭连接后不自动commit-->
<property name="autoCommitOnClose" value="false"/>
<!--设置连接超时-->
<property name="checkoutTimeout" value="10000"/>
<!--当获取连接失败,重试次数-->
<property name="acquireRetryAttempts" value="2"/>
</bean>
<!-- 3.sqlSessionFactory-->
<bean id="sqlsessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 注入数据源-->
<property name="dataSource" ref="dataSource"/>
<!-- 绑定mybatis配置文件-->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
<!-- 4.配置dao接口扫描包,动态实现dao接口注入到spring容器中-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--注入sqlsessionFactory-->
<property name="sqlSessionFactoryBeanName" value="sqlsessionFactory"/>
<!--要扫描的dao包-->
<property name="basePackage" value="com.lin.dao"/>
</bean>
</beans>
3.2 整合service层
创建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 https://www.springframework.org/schema/context/spring-context.xsd">
<!-- 1.扫描service下的包,注册bean
若扫描注册bean,以下步骤2可以直接使用注解注入BookMapper
-->
<context:component-scan base-package="com.lin.service"/>
<!-- 2.将我们的业务类,注入到spring,通过注解或配置实现,此处用配置-->
<bean id="BookServiceImpl" class="com.lin.service.BookServiceImpl">
<!--此处能注入bookMapper是因为spring-dao和spring-service在同一个上下文中(IDEA自动帮我们做了),
若不在,则需自已import spring-dao.xml
或者在applicatonContext.xml中import spring-dao.xml,此处直接在applicationContext中配置-->
<property name="bookMapper" ref="bookMapper"/>
</bean>
<!--3.声明式事务管理,事务自动提交-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--注入数据源-->
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
在applicationContext.xml 导入spring-dao.xml,spring-service.xml,spring-mvc.xml(之后写),使他们在同一上下文
4 整合Spring-mvc
4.1 增加web支持
4.2 写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">
<!--1.DispathServlet-->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<!--绑定spring-mvc配置文件-->
<param-value>classpath:spring-mvc.xml</param-value>
</init-param>
<!--与Tomcat一块启动-->
<load-on-startup>1</load-on-startup>
</servlet>
<!--过滤请求-->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--2.乱码过滤-->
<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>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<!--/*会捕捉.jsp页面,/不会-->
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--3.配置session超时-->
<session-config>
<session-timeout>15</session-timeout>
</session-config>
</web-app>
4.3 写spring-mvc
配置控制器映射器,控制器适配器,和视图解析器
<?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:mvn="http://www.springframework.org/schema/mvc"
xmlns:mvc="http://www.springframework.org/schema/mvc"
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/cache http://www.springframework.org/schema/cache/spring-cache.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
<!--1.注解驱动
在spring中一般采用@RequestMapping注解来完成映射关系
要想使该注解生效,必须向上下文中注册DefaultAnnotationHandlerMapping
和一个AnnotationMethodHandlerAdopter实例。这两个实例分别在类级别和方法级别处理
而annotation-driven配置帮助我们自动完成上述两个实例注入-->
<mvn:annotation-driven/>
<!--不处理静态资源-->
<mvc:default-servlet-handler/>
<!--扫描包:controller-->
<context:component-scan base-package="com.lin.controller"/>
<!-- 4.视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
至此框架搭建完成
5.试一试查询全部书籍功能
5.1 写BookController
5.1 写index.jsp
5.2 写allBook.jsp
5.3 配置Tomcat
5.3 运行
开启tomcat发现报错,发现jar包没有打包进去,于是做如下配置
之后,再运行成功
点击进入书籍页面,成功
标签:xml,web,spring,ssm,案例,整合,org,mybatis,易懂 来源: https://blog.csdn.net/qq_41655082/article/details/116980226
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