SSM整合过程

桃扇骨 2022-04-14 01:55 184阅读 0赞

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### 流程 ###

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

<dependencies>
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
                <version>4.0.0.RELEASE</version>
            </dependency>
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-webmvc</artifactId>
                <version>4.0.0.RELEASE</version>
            </dependency>
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-jdbc</artifactId>
                <version>4.0.0.RELEASE</version>
            </dependency>
            
            
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>3.4.2</version>
            </dependency>
            
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>5.1.37</version>
            </dependency>
            
            <dependency>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>1.2.17</version>
            </dependency>
            
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis-spring</artifactId>
                <version>1.3.1</version>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>1.1.9</version>
            </dependency>
            
            <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>

1.  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

1.  配置springmvc.xml

1.  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

1.  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>

1.  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">
        
        <context:component-scan base-package="com.atguigu.ssm">
            
            <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
        </context:component-scan>
        
        
        <context:property-placeholder location="classpath:druid.properties"/>
        
        
        <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>
        
        
        
        <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
            
            <property name="dataSource" ref="dataSource"></property>
            
            <property name="configLocation" value="classpath:mybatis-config.xml"></property>
            
            <property name="mapperLocations" value="classpath:com/atguigu/ssm/mapper/*.xml"></property>
        </bean>
        
        
        <mybatis-spring:scan base-package="com.atguigu.ssm.mapper"/>
    </beans>

1.  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
2.  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

1.  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