SSM整合过程

原创

wx63118e2bb7416 2022-09-02 13:44:19 博主文章分类：Java ©著作权

文章标签 ssm java spring xml mvc 文章分类 后端开发

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流程

项目-右键-build path-configure-build-path : faces =》让出现webContent
配置pom.xml：

 <dependencies>
        <!-- 只需要将context的jar包的依赖配置上，其他依赖的jar包会自动导入 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.0.0.RELEASE</version>
        </dependency>
        <!-- 只需要导入spring-webmvc的jar包，Maven会自动将它依赖的spring-web的jar导入 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.0.0.RELEASE</version>
        </dependency>
        <!-- spring-jdbc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>4.0.0.RELEASE</version>
        </dependency>
        
        <!-- MyBatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.2</version>
        </dependency>
        <!-- MySql -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.37</version>
        </dependency>
        <!-- log4j -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <!-- mybatis-spring -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.1</version>
        </dependency>
        <!-- druid -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.9</version>
        </dependency>
        <!-- jstl -->
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <dependency>
            <groupId>org.apache.taglibs</groupId>
            <artifactId>taglibs-standard-impl</artifactId>
            <version>1.2.5</version>
        </dependency>
    </dependencies>

配置web.xml

1.将自结束标签改为成对标签
2. 配置过滤器CharacterEncodingFilter,目的是解决请求和响应的中文乱码问题
3.配置DispatcherServlet ： alt+/ 倒数第二项
4.配置ContextLoaderListener: alt+/ 倒数第三项

需要创建spring对应的xml文件  : bean.xml -创建xml格式文件
创建srpingMVC对应的xml文件：springmvc.xml-创建xml格式文件

配置springmvc.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/mvchttp://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-4.0.xsd">
    <!-- 设置自动扫描的包 -->
    <context:component-scan base-package="com.atguigu.ssm" use-default-filters="false">
        <!-- 设置只扫描Handler -->
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    
    <!-- 配置视图解析器 -->
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/pages/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
    
    <!-- 配置处理静态资源 -->
    <mvc:default-servlet-handler/>
    
    <mvc:annotation-driven></mvc:annotation-driven>
</beans>

配置druid.properties

jdbc.username=root
jdbc.password=1
jdbc.url=jdbc:mysql://localhost:3306/mybatis
jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.initialSize=10
jdbc.minIdle=5
jdbc.maxActive=20
jdbc.maxWait=5000

配置mybatis-config.xml(也可以不要) 和log4j.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
 
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
 
 <appender name="STDOUT" class="org.apache.log4j.ConsoleAppender">
   <param name="Encoding" value="UTF-8" />
   <layout class="org.apache.log4j.PatternLayout">
    <param name="ConversionPattern" value="%-5p %d{MM-dd HH:mm:ss,SSS} %m  (%F:%L) \n" />
   </layout>
 </appender>
 <logger name="java.sql">
   <level value="debug" />
 </logger>
 <logger name="org.apache.ibatis">
   <level value="info" />
 </logger>
 <root>
   <level value="debug" />
   <appender-ref ref="STDOUT" />
 </root>
</log4j:configuration>

配置spring的配置文件bean.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:mybatis-spring="http://mybatis.org/schema/mybatis-spring"
    xsi:schemaLocation="http://mybatis.org/schema/mybatis-springhttp://mybatis.org/schema/mybatis-spring-1.2.xsd
http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-4.0.xsd">
    <!-- 设置自动扫描的包 -->
    <context:component-scan base-package="com.atguigu.ssm">
        <!-- 设置不扫描Handler -->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    
    <!-- 引入外部的属性文件 -->
    <context:property-placeholder location="classpath:druid.properties"/>
    
    <!-- 配置数据源 -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="username" value="${jdbc.username}"></property>
        <property name="password" value="${jdbc.password}"></property>
        <property name="url" value="${jdbc.url}"></property>
        <property name="driverClassName" value="${jdbc.driverClassName}"></property>
        
        <property name="initialSize" value="${jdbc.initialSize}"></property>
        <property name="minIdle" value="${jdbc.minIdle}"></property>
        <property name="maxActive" value="${jdbc.maxActive}"></property>
        <property name="maxWait" value="${jdbc.maxWait}"></property>
    </bean>
    
    <!-- 整合MyBatis -->
    <!-- 1. 配置SqlSessionFactoryBean-->
    <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 配置数据源属性 -->
        <property name="dataSource" ref="dataSource"></property>
        <!-- 配置MyBatis的全局配置文件 -->
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
        <!-- 配置Mapper接口的映射文件 -->
        <property name="mapperLocations" value="classpath:com/atguigu/ssm/mapper/*.xml"></property>
    </bean>
    
    <!-- 2.扫描Mapper接口 -->
    <mybatis-spring:scan base-package="com.atguigu.ssm.mapper"/>
</beans>

创建mapper接口和对应的Mybatis的xml文件以及其他相关联业务逻辑
业务逻辑层面的处理

创建业务逻辑层的UserService的接口和实现及表现层的处理器UserHandler
 
在UserService中注入UserMapper
 
在UserHandler中注入UserService
 
UserServiceImpl

关于后台代码文件的明明

entities: 对应Javabean 
mapper:  interface 接口，对应的mybatis的xml文件卸载resources中
handler: @controller对应的文件，处理用户请求的
service: @service ,业务逻辑端，service中在创建一个impl的package，放置s    ervice对应的实现类