Spring MVC配置druid 数据源
Spring MVC 配置 druid 数据源实例
文章目录
- Spring MVC 配置 druid 数据源实例
- 前言
- druid介入步骤
-
- 1、引入druid 相关依赖
- 3、配置web.xml
- 4、配置spring 配置文件
-
- 方式1 、数据库配置保存在spring配置xml文件
- 方式二 、数据库配置保存在properties
- 测试
前言
前提先使用maven进行开发，搭建好spring mvc框架demo框架。
druid介入步骤
1、引入druid 相关依赖
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatis-springartifactId>
<version>1.3.1version>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>druidartifactId>
<version>1.1.12version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>5.1.21version>
dependency>
3、配置web.xml
配置druid的控制台servlet和http请求拦截器（方便监控请求情况，不需要刻意注释掉filter和servlet，不推荐）
可以在druid控制台servlet下设置initparam 配置访问账号和密码（强烈推荐）
配置druid控制（带访问账号、密码）、spring mvc拦截器
<filter>
<filter-name>druidWebStatFilterfilter-name>
<filter-class>com.alibaba.druid.support.http.WebStatFilterfilter-class>
<init-param>
<param-name>exclusionsparam-name>
<param-value>/assets/*,*.css,*.js,*.gif,*.jpg,*.png,*.ico,*.eot,*.svg,*.ttf,*.woff,*.jsp,*.tpl,/druid/*param-value>
init-param>
filter>
<filter-mapping>
<filter-name>druidWebStatFilterfilter-name>
<url-pattern>/*url-pattern>
filter-mapping>
<servlet>
<servlet-name>druidStatViewservlet-name>
<servlet-class>com.alibaba.druid.support.http.StatViewServletservlet-class>
<init-param>
<param-name>loginUsernameparam-name>
<param-value>adminparam-value>
init-param>
<init-param>
<param-name>loginPasswordparam-name>
<param-value>adminparam-value>
init-param>
servlet>
<servlet-mapping>
<servlet-name>druidStatViewservlet-name>
<url-pattern>/druid/*url-pattern>
servlet-mapping>
4、配置spring 配置文件
web.xml 中的spring 配置文件
<context-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:applicationContext.xmlparam-value>
context-param>
方式1 、数据库配置保存在spring配置xml文件
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:jdbc.properties"/>
bean>
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
<property name="driverClassName" value="driver"/>
<property name="url" value="xxx"/>
<property name="username" value="username"/>
<property name="password" value="$password"/>
<property name="initialSize" value="1"/>
<property name="minIdle" value="1"/>
<property name="maxActive" value="20"/>
<property name="maxWait" value="60000"/>
<property name="timeBetweenEvictionRunsMillis" value="60000"/>
<property name="minEvictableIdleTimeMillis" value="300000"/>
<property name="validationQuery" value="SELECT 'x'"/>
<property name="testWhileIdle" value="true"/>
<property name="testOnBorrow" value="false"/>
<property name="testOnReturn" value="false"/>
<property name="poolPreparedStatements" value="false"/>
<property name="maxPoolPreparedStatementPerConnectionSize" value="20"/>
<property name="filters" value="stat"/>
bean>
方式二 、数据库配置保存在properties
为什么使用properties保存数据库连接信息，因为我们要对测试环境、生产数据库配置中敏感信息进行加密，使用密文形式保存，避免信息泄露。
dbconfig.properties配置文件 - 保存数据库连接配置。
url=jdbc:mysql://xxx:3306/db?useUnicode=true&characterEncoding=utf-8;autoReconnect=true
username=WhI1rcM89+Q=
password=95UiUGyb6no=
driverClassName=com.mysql.jdbc.Driver
filters=stat
maxActive=20
initialSize=1
maxWait=60000
minIdle=10
maxIdle=15
timeBetweenEvictionRunsMillis=60000
minEvictableIdleTimeMillis=300000
validationQuery=SELECT 'x'
testWhileIdle=true
testOnBorrow=false
testOnReturn=false
maxOpenPreparedStatements=20
removeAbandoned=true
removeAbandonedTimeout=1800
logAbandoned=true
配置spring 配置文件applicationContext.xml
备注： 我这里使用多环境配置和自定义PropertyPlaceholderConfigurer 进行配置文件解析 ，方便应用实现多环境配置切换和密文信息解密。
具体查看：SpringMVC项目数据库用户名密码加密解密
<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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:task="http://www.springframework.org/schema/task"
xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/task
http://www.springframework.org/schema/task/spring-task-3.2.xsd ">
<context:component-scan base-package="com.csii">
<context:exclude-filter type="annotation"
expression="org.springframework.stereotype.Controller" />
context:component-scan>
<bean class="com.csii.util.PropertiesUtil">
<property name="locations">
<list>
<value>classpath:app-${spring.profiles.active}.propertiesvalue>
<value>classpath:dbconfig-${spring.profiles.active}.propertiesvalue>
list>
property>
<property name="decryptProperties">
<array>
<value>usernamevalue>
<value>passwordvalue>
array>
property>
bean>
<bean id="pooledDataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
<property name="url" value="${url}" />
<property name="username" value="${username}" />
<property name="password" value="${password}" />
<property name="driverClassName" value="${driverClassName}" />
<property name="filters" value="${filters}" />
<property name="maxActive" value="${maxActive}" />
<property name="initialSize" value="${initialSize}" />
<property name="minIdle" value="${minIdle}" />
<property name="maxWait" value="${maxWait}" />
<property name="timeBetweenEvictionRunsMillis" value="${timeBetweenEvictionRunsMillis}" />
<property name="minEvictableIdleTimeMillis" value="${minEvictableIdleTimeMillis}" />
<property name="validationQuery" value="${validationQuery}" />
<property name="testWhileIdle" value="${testWhileIdle}" />
<property name="testOnBorrow" value="${testOnBorrow}" />
<property name="testOnReturn" value="${testOnReturn}" />
<property name="maxOpenPreparedStatements" value="${maxOpenPreparedStatements}" />
<property name="removeAbandoned" value="${removeAbandoned}" />
<property name="removeAbandonedTimeout" value="${removeAbandonedTimeout}" />
<property name="logAbandoned" value="${logAbandoned}" />
bean>
<bean id="druid-stat-interceptor"
class="com.alibaba.druid.support.spring.stat.DruidStatInterceptor" />
<bean id="druid-stat-pointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut"
scope="prototype">
<property name="patterns">
<list>
<value>spring.druid.service.*value>
list>
property>
bean>
<bean id="sqlSessionFactory"
class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="configLocation"
value="classpath:mybatis-config.xml">property>
<property name="dataSource" ref="pooledDataSource">property>
<property name="mapperLocations"
value="classpath:mapper/*.xml">property>
bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.csii.dao">property>
bean>
<bean id="sqlSession"
class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg name="sqlSessionFactory"
ref="sqlSessionFactory">constructor-arg>
<constructor-arg name="executorType" value="BATCH">constructor-arg>
bean>
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="pooledDataSource">property>
bean>
<aop:config>
<aop:pointcut expression="execution(* com.csii.service..*(..))" id="txPoint" />
<aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint" />
<aop:advisor advice-ref="druid-stat-interceptor" pointcut-ref="druid-stat-pointcut" />
aop:config>
<tx:advice id="txAdvice"
transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="*" />
tx:attributes>
tx:advice>
<task:annotation-driven/>
beans>
测试
启动spring mvc 应用后，可以通过页面访问druid控制台
例如：http://localhost:8080/druid
通过请求后台接口访问DAO层查询数据，可以在控制台监控到相应sql。