Java开发druid数据连接池maven方式简易配置流程示例

< properties >

< druid.version >1.0.18</ druid.version >

</ properties >

< dependencies >

<!-- connection pool -->

         < dependency >

             < groupId >com.alibaba</ groupId >

             < artifactId >druid</ artifactId >

             < version >${druid.version}</ version >

         </ dependency >

     < dependency >

             < groupId >mysql</ groupId >

             < artifactId >mysql-connector-java</ artifactId >

             < version >5.1.38</ version >

         </ dependency >

</ dependencies >

datasource.mysql.driverClassName=com.mysql.jdbc.Driver

datasource.mysql.url=jdbc:mysql://localhost:3306/ganlandoudata?useUnicode=true&characterEncoding=UTF-8&useSSL=false

datasource.mysql.username=root

datasource.mysql.password=

jdbc.pool.init=1   连接池初始化的连接数

jdbc.pool.minIdle=3  连接池连接最小空闲数

jdbc.pool.maxActive=20  连接池最大活跃连接数

datasource.validationQuery=select 1 from dual 连接测试

datasource.testOnBorrow=true  <span style="font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 13px; background-color: rgb(254, 254, 242);">申请连接时执行validationQuery检测连接是否有效，做了这个配置会降低性能。</span>

datasource.testOnReturn=false  <span style="font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 13px; background-color: rgb(254, 254, 242);">归还连接时执行validationQuery检测连接是否有效，做了这个配置会降低性能</span>

<!-- 全局参数 -->

     < settings >

         <!-- 使全局的映射器启用或禁用缓存。 -->

         < setting name = "cacheEnabled" value = "true" />

         <!-- 全局启用或禁用延迟加载。当禁用时，所有关联对象都会即时加载。 -->

         < setting name = "lazyLoadingEnabled" value = "true" />

         <!-- 当启用时，有延迟加载属性的对象在被调用时将会完全加载任意属性。否则，每种属性将会按需要加载。 -->

         < setting name = "aggressiveLazyLoading" value = "true" />

         <!-- 是否允许单条sql 返回多个数据集  (取决于驱动的兼容性) default:true -->

         < setting name = "multipleResultSetsEnabled" value = "true" />

         <!-- 是否可以使用列的别名 (取决于驱动的兼容性) default:true -->

         < setting name = "useColumnLabel" value = "true" />

         <!-- 允许JDBC 生成主键。需要驱动器支持。如果设为了true，这个设置将强制使用被生成的主键，有一些驱动器不兼容不过仍然可以执行。  default:false  -->

         < setting name = "useGeneratedKeys" value = "true" />

         <!-- 指定 MyBatis 如何自动映射 数据基表的列 NONE：不隐射　PARTIAL:部分  FULL:全部  -->

         < setting name = "autoMappingBehavior" value = "FULL" />

         <!-- 这是默认的执行类型  （SIMPLE: 简单； REUSE: 执行器可能重复使用prepared statements语句；BATCH: 执行器可以重复执行语句和批量更新）  -->

         < setting name = "defaultExecutorType" value = "BATCH" />

         <!-- 数据库超过25000秒仍未响应则超时   -->

         < setting name = "defaultStatementTimeout" value = "1000" />

         <!-- 使用驼峰命名法转换字段。 -->

         < setting name = "mapUnderscoreToCamelCase" value = "true" />

         <!-- 设置本地缓存范围 session:就会有数据的共享  statement:语句范围 (这样就不会有数据的共享 ) defalut:session -->

         < setting name = "localCacheScope" value = "SESSION" />

         <!-- 设置但JDBC类型为空时,某些驱动程序 要指定值,default:OTHER，插入空值时不需要指定类型 -->

         < setting name = "jdbcTypeForNull" value = "NULL" />

     </ settings >

     <!-- 类型别名 -->

     <!-- <typeAliases>

         <typeAlias alias="Page" type="com.thinkgem.jeesite测试数据mon.persistence.Page" />分页

     </typeAliases>

      -->

     <!-- 插件配置 -->

     < plugins >

         < plugin interceptor = "com.hl.core.mybatis.plugin.OffsetLimitInterceptor" >

             < property name = "dialectClass" value = "com.hl.core.mybatis.dialect.MySQLDialect" />

         </ plugin >

     </ plugins >

</ configuration >

<!-- 自动扫描 ,扫描指定包下的mapper-->

<context:component-scan base- package = "com.hl" />

<!--引入jdbc.properties配置文件-->

<bean id= "propertyConfigurer"

     class = "org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" >

     <property name= "location" value= "classpath:jdbc.properties" />

</bean>

<!-- MyBatis begin -->

     <!--sqlsession配置-->

  <bean id= "sqlSessionFactory" class = "org.mybatis.spring.SqlSessionFactoryBean" >

       <!-- 注入dataSource，引用已定义的id为 dataSource的bean-->

  <property name= "dataSource" ref= "dataSource" />

         <!-- 实体类 -->

         <property name= "typeAliasesPackage" value= "com.hl.manage.*.entity.*" />

         <!--实体类继承的父类-->

         <property name= "typeAliasesSuperType" value= "com.hl.core.base.BaseEntity" />

         <!--mapper.xml配置文件-->

  <property name= "mapperLocations" value= "classpath:com/hl/**/mapper/*Mapper.xml" />

         <!--myBatis配置文件-->

  <property name= "configLocation" value= "classpath:ibatis-config.xml" ></property></bean><!-- 扫描basePackage下所有Dao的接口 --><bean id= "mapperScannerConfigurer" class = "org.mybatis.spring.mapper.MapperScannerConfigurer" ><property name= "sqlSessionFactoryBeanName"

  value= "sqlSessionFactory" /><property name= "basePackage" value= "com.hl" /></bean><!-- 定义事务 --><bean id= "transactionManager" class = "org.springframework.jdbc.datasource.DataSourceTransactionManager" ><property name= "dataSource" ref= "dataSource" /></bean><!-- 配置

  Annotation 驱动，扫描 @Transactional 注解的类定义事务 --><tx:annotation-driven transaction-manager= "transactionManager" proxy-target- class = "true" /><!-- MyBatis end --><!-- 数据源配置, 使用 druid数据库连接池 --><bean id= "dataSource" class = "com.alibaba.druid.pool.DruidDataSource" init-method= "init"

  destroy-method= "close" ><!-- 数据源驱动类可不写，Druid默认会自动根据URL识别DriverClass --><property name= "driverClassName" value= "${datasource.mysql.driverClassName}" /><!-- 基本属性 url、user、password --><property name= "url" value= "${datasource.mysql.url}" /><property name= "username"

  value= "${datasource.mysql.username}" /><property name= "password" value= "${datasource.mysql.password}" /><!-- 配置初始化大小、最小、最大 --><property name= "initialSize" value= "${jdbc.pool.init}" /><property name= "minIdle" value= "${jdbc.pool.minIdle}" /><property name= "maxActive"

  value= "${jdbc.pool.maxActive}" /><!-- 配置获取连接等待超时的时间 --><property name= "maxWait" value= "60000" /><!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 --><property name= "timeBetweenEvictionRunsMillis" value= "60000" /><!-- 配置一个连接在池中最小生存的时间，单位是毫秒 --><property name= "minEvictableIdleTimeMillis"

  value= "300000" /><!-- <property name= "validationQuery" value= "${jdbc.testSql}" /> --><property name= "testWhileIdle" value= "true" /><property name= "testOnBorrow" value= "false" /><property name= "testOnReturn" value= "false" /><!-- 打开PSCache，并且指定每个连接上PSCache的大小（Oracle使用）

  <property name= "poolPreparedStatements" value= "true" /> <property name= "maxPoolPreparedStatementPerConnectionSize" value= "20" /> --><!-- 配置监控统计拦截的filters ,注意此配置根据需要选择--><property name= "filters" value= "stat,wall,config" />

         ##若只需要监控请配置成<property name= "filters" value= "stat" /> 

         <!--配置config时加此配置-->

             <property name= "ConnectionProperties" value= "config.decrypt=true;config.decrypt.key=${publickey}" />

         <!-- 防御SQL注入攻击 -->

         <!-- <property name= "filters" value= "wall" /> -->

         <!-- 数据库密码解密配置 -->

         <!--  <property name= "filters" value= "config" /> -->

     </bean>

     <!-- 数据源配置, 不使用连接池 <bean id= "dataSource" class = "org.springframework.jdbc.datasource.DriverManagerDataSource" >

         <property name= "driverClassName" value= "${jdbc.driver}" /> <property name= "url"

         value= "${jdbc.url}" /> <property name= "username" value= "${jdbc.username}" />

         <property name= "password" value= "${jdbc.password}" /> </bean> -->

</beans>

<!-- DruidStatView -->

     < servlet >

         < servlet-name >DruidStatView</ servlet-name >

         < servlet-class >com.alibaba.druid.support.http.StatViewServlet</ servlet-class >

     < init-param >

             <!-- 允许清空统计数据 -->

             < param-name >resetEnable</ param-name >

             < param-value >true</ param-value >

         </ init-param >

         < init-param >

             <!-- 用户名 -->

             < param-name >loginUsername</ param-name >

             < param-value >admin</ param-value >

         </ init-param >

         < init-param >

             <!-- 密码，用于访问druid监测界面 -->

             < param-name >loginPassword</ param-name >

             < param-value >ganlandou123456</ param-value >

         </ init-param >

     <!-- 允许访问的ip

< init-param >

     < param-name >allow</ param-name >

     < param-value >128.242.127.1/24,128.242.128.1</ param-value >

</ init-param >

< init-param >

         < param-name >deny</ param-name >

         < param-value >128.242.127.4</ param-value >

     </ init-param > -->

     </ servlet >

     < servlet-mapping >

         < servlet-name >DruidStatView</ servlet-name >

         < url-pattern >/druid/*</ url-pattern >

     </ servlet-mapping >

       <!-- druid web监控 -->

     < filter >

         < filter-name >DruidWebStatFilter</ filter-name >

         < filter-class >com.alibaba.druid.support.http.WebStatFilter</ filter-class >

         < init-param >

             < param-name >exclusions</ param-name >

             < param-value >*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*</ param-value >

         </ init-param >

         <!-- 监控单个url调用的sql列表 -->

         < init-param >

             < param-name >profileEnable</ param-name >

             < param-value >true</ param-value >

         </ init-param >

         <!-- 获取的session的name,根据name拿到存储的值 -->

  < init-param >< param-name >principalSessionName</ param-name >

< param-value >user</ param-value >

< param-value >agtCompany</ param-value >

< param-value >cusUser</ param-value ></ init-param >

<!--是否开启session监控，若开启能获取服务传递的session信息 -->

< init-param >< param-name >sessionStatEnable</ param-name >

< param-value >true</ param-value ></ init-param ></ filter >

< filter-mapping >< filter-name >DruidWebStatFilter</ filter-name >< url-pattern >/*</ url-pattern ></ filter-mapping >

     <!-- 关联Spring监测 -->

</ bean >

         < bean id = "druid-stat-interceptor"

         class = "com.alibaba.druid.support.spring.stat.DruidStatInterceptor" >

     </ bean >

     < bean id = "druid-stat-pointcut" class = "org.springframework.aop.support.JdkRegexpMethodPointcut"

         scope = "prototype" >

         < property name = "patterns" >

             < list >

     <!--基于方法进行拦截监测-->

                 < value >com.hl.manage.*.service.*.*</ value > 

             </ list >

         </ property >

     </ bean >

     < aop:config >

         < aop:advisor advice-ref = "druid-stat-interceptor"

             pointcut-ref = "druid-stat-pointcut" />

     </ aop:config >

数据库密码加密指令，cmd控制台执行

java -cp F:\server\MavenRepository\maven_jar\com\alibaba\druid\1.0.18\druid-1.0.18.jar com.alibaba.druid.filter.config.ConfigTools reiang1227

// java -cp后指向jar包，再指向com.alibaba.druid.filter.config.ConfigTools，最后加上数据库原始密码，会生成加密后的password及生成的秘钥publickey

将jdbc。properties中的数据库密码换掉，然后增加publickey参数配置

datasource.mysql.password=Je0i/vizWGnbgeYaXfuy/js/ZWeSMqnGRtjXbx/NK5pVhyUesUs91oih5W2qZpx6WzXB2ffQzByI/7K7tFlUvg==

publickey=MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAIliWZYPXkbi6x7hAN7y4zIGqDD3aRSJgmDhWGtrU9cbH3DExXz/BvGoA9CmEkdCGzHAOXKaz1iHw5v4EqJ/hosCAwEAAQ==