SSM框架整合之MySQL数据库

整合Mysql相关配置

ssm整合mysql需要两个jar:

• 连接mysql的 依赖jar
• 数据连接池 依赖jar

1. mysql依赖jar

<dependency>
	<groupId>mysqlgroupId>
	<artifactId>mysql-connector-javaartifactId>
	<version>5.1.38version> 
	<scope>runtimescope>
dependency>

2. 连接池

以下介绍几款常用的连接池配置方式,对连接池想进一步了解的可以访问https://blog.csdn.net/weixin_40751299/article/details/81609332 ,
ssm框架中在resources文件夹下新建两个文件

• spring-dao.xml
• jdbc.properties

2.1. c3p0连接池配置

• maven pom文件依赖

<dependency>
	<groupId>c3p0groupId>
	<artifactId>c3p0artifactId>
	<version>0.9.1.2version>
dependency>

• 配置文件spring-dao.xml

<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:property-placeholder location="classpath:jdbc.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" />
		
		<property name="typeAliasesPackage" value="com.soecode.lyf.entity" />
		
		<property name="mapperLocations" value="classpath:mapper/*.xml" />
	bean>

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

• 配置文件 jdbc.properties

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

以上内容中的cp30配置文件摘自 https://github.com/liyifeng1994/ssm/tree/f3f90d79e50410c2f661ff309dd022322bdbc7cf

2.2 阿里的druid dataSource

<dependency>
   	<groupId>com.alibabagroupId>
   	<artifactId>druidartifactId>
  	<version>1.0.0version>
dependency>

spring-dao.xml

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

    
    
    
    
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="${mysql_driverClassName}" />
        <property name="url" value="${mysql_url}" />
        <property name="username" value="${mysql_username}" />
        <property name="password" value="${mysql_password}" />

        
        <property name="initialSize" value="${druid_initialSize}" />
        <property name="minIdle" value="${druid_minIdle}" />
        <property name="maxActive" value="${druid_maxActive}" />

        
        <property name="maxWait" value="${druid_maxWait}" />

        
        <property name="timeBetweenEvictionRunsMillis" value="${druid_timeBetweenEvictionRunsMillis}" />

        
        <property name="minEvictableIdleTimeMillis" value="${druid_minEvictableIdleTimeMillis}" />

        <property name="testWhileIdle" value="true" />

        
        <property name="testOnBorrow" value="true" />
        <property name="testOnReturn" value="false" />

        
        <property name="poolPreparedStatements" value="true" />
        <property name="maxPoolPreparedStatementPerConnectionSize"
                  value="20" />

        <property name="removeAbandoned" value="true" />
        <property name="removeAbandonedTimeout" value="1800" />

        
        <property name="filters" value="stat" />
    bean>

    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        
        <property name="dataSource" ref="dataSource" />
        
        <property name="configLocation" value="classpath:mybatis/mybatis-config.xml" />
        
        <property name="typeAliasesPackage" value="com.fuzhu.entity" />
        
        <property name="mapperLocations" value="classpath:mapper/*.xml" />
    bean>

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

jdbc.properties

mysql_driverClassName=com.mysql.jdbc.Driver
mysql_url=jdbc:mysql://localhost:3306/ssm?useUnicode=true&characterEncoding=utf8
mysql_username=root
mysql_password=751197996

druid_initialSize=1
druid_minIdle=1
druid_maxActive=10

druid_maxWait=10000

druid_timeBetweenEvictionRunsMillis=60000

druid_minEvictableIdleTimeMillis=300000

部分内容摘自https://github.com/FuZhucheng/SSM

2.3 dbcp连接池

<dependency>  
      <groupId>commons-dbcpgroupId>  
      <artifactId>commons-dbcpartifactId>  
      <version>1.2.2version>
dependency> 

jdbc.properties

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/ssm
username=root
password=root
#定义初始连接数  
initialSize=0  
#定义最大连接数  
maxActive=20  
#定义最大空闲  
maxIdle=20  
#定义最小空闲  
minIdle=1  
#定义最长等待时间  
maxWait=60000  

spring-mybatis.xml

  
<beans xmlns="http://www.springframework.org/schema/beans"  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"  
    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-4.0.xsd">  
      
    <context:component-scan base-package="com.javen" />  
    
      
    <bean id="propertyConfigurer"  
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">  
        <property name="location" value="classpath:jdbc.properties" />  
    bean>  
  
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"  
        destroy-method="close">  
        <property name="driverClassName" value="${driver}" />  
        <property name="url" value="${url}" />  
        <property name="username" value="${username}" />  
        <property name="password" value="${password}" />  
          
        <property name="initialSize" value="${initialSize}">property>  
          
        <property name="maxActive" value="${maxActive}">property>  
          
        <property name="maxIdle" value="${maxIdle}">property>  
          
        <property name="minIdle" value="${minIdle}">property>  
          
        <property name="maxWait" value="${maxWait}">property>  
    bean>  
  
      
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">  
        <property name="dataSource" ref="dataSource" />  
          
        <property name="mapperLocations" value="classpath:com/javen/mapping/*.xml">property>  
    bean>  
  
      
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">  
        <property name="basePackage" value="com.javen.dao" />  
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory">property>  
    bean>  
  
      
    <bean id="transactionManager"  
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">  
        <property name="dataSource" ref="dataSource" />  
    bean>  
  
beans>  

以上摘自 https://github.com/Javen205/SSM