1、首先要引入相关jar包,我这里的数据库是oracle
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.10</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.oracle.jdbc/ojdbc8 -->
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc8</artifactId>
<version>12.2.0.1</version>
</dependency>
2、配置文件 配置上相关的application.properties
spring.datasource.url=jdbc:oracle:thin:@ 10.15.8.32:1521/GIB
spring.datasource.username=pas
spring.datasource.password=pas
spring.datasource.driver-class-name=oracle.jdbc.driver.OracleDriver
#db的基本配置
spring.datasource.max-idle=10
spring.datasource.max-wait=10000
spring.datasource.min-idle=5
spring.datasource.initial-size=5
#连接池配置
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
# 初始化大小,最小,最大
spring.datasource.initialSize=5
spring.datasource.minIdle=5
spring.datasource.maxActive=20
# 配置获取连接等待超时的时间
spring.datasource.maxWait=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
spring.datasource.timeBetweenEvictionRunsMillis=60000
# 配置一个连接在池中最小生存的时间,单位是毫秒
spring.datasource.minEvictableIdleTimeMillis=300000
#用来检测连接是否有效的sql,要求是一个查询语句。
#如果validationQuery为null,testOnBorrow、testOnReturn、testWhileIdle
#都不会其作用。
spring.datasource.validationQuery=SELECT 1 FROM DUAL
#建议配置为true,不影响性能,并且保证安全性。申请连接的时候检测,如果空闲时间大于
#timeBetweenEvictionRunsMillis,执行validationQuery检测连接是否有效
spring.datasource.testWhileIdle=true
#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。
spring.datasource.testOnBorrow=false
#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
spring.datasource.testOnReturn=false
# 打开PSCache,并且指定每个连接上PSCache的大小
#是否缓存preparedStatement,也就是PSCache。PSCache对支持游标的数据库性能提升巨大,
#比如说oracle。在mysql5.5以下的版本中没有PSCache功能,建议关闭掉。
#5.5及以上版本有PSCache,建议开启。
spring.datasource.poolPreparedStatements=true
#要启用PSCache,必须配置大于0,当大于0时,poolPreparedStatements自动触发修改为true。
#在Druid中,不会存在Oracle下PSCache占用内存过多的问题,可以把这个数值配置大一些,比如说100
spring.datasource.maxPoolPreparedStatementPerConnectionSize=100
# 属性类型是字符串,通过别名的方式配置扩展插件,常用的插件有:
#监控统计用的filter:stat 日志用的filter:log4j 防御sql注入的filter:wall
spring.datasource.filters=stat,wall,slf4j
# 通过connectProperties属性来打开mergeSql功能;慢SQL记录
spring.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
3、我这里讲述两种方式
3-1、用方式注册 servlet、filter、interceptor
@Configuration
@PropertySource(value ="classpath:application.properties")
public class DruidConfiguration {
@Bean(destroyMethod = "close", initMethod = "init")
@ConfigurationProperties(prefix = "spring.datasource")
public DataSource druidDataSource() {
DruidDataSource druidDataSource = new DruidDataSource();
return druidDataSource;
}
/**
* 注册一个StatViewServlet
* @return
*/
@Bean
public ServletRegistrationBean druidStatViewServlet(){
//org.springframework.boot.context.embedded.ServletRegistrationBean提供类的进行注册.
ServletRegistrationBean servletRegistrationBean =
new ServletRegistrationBean(new StatViewServlet(),"/druid/*");
//添加初始化参数:initParams
//白名单:
servletRegistrationBean.addInitParameter("allow","127.0.0.1");
//IP黑名单 (存在共同时,deny优先于allow) : 如果满足deny的话提示:Sorry, you are not permitted to view this page.
servletRegistrationBean.addInitParameter("deny","192.168.1.73");
//登录查看信息的账号密码.
servletRegistrationBean.addInitParameter("loginUsername","admin");
servletRegistrationBean.addInitParameter("loginPassword","admin");
//是否能够重置数据.
servletRegistrationBean.addInitParameter("resetEnable","false");
return servletRegistrationBean;
}
/**
* 注册一个:filterRegistrationBean
* @return
*/
@Bean
public FilterRegistrationBean<WebStatFilter> druidStatFilter(){
FilterRegistrationBean<WebStatFilter> filterRegistrationBean =
new FilterRegistrationBean<WebStatFilter>(new WebStatFilter());
//添加过滤规则.
filterRegistrationBean.addUrlPatterns("/*");
//添加不需要忽略的格式信息.
filterRegistrationBean.addInitParameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
return filterRegistrationBean;
}
/**
*--------------------- 配置 druid的spring监控------------------------
* */
//DruidStatInterceptor类为druid提供的拦截器
@Bean
public DruidStatInterceptor druidStatInterceptor() {
DruidStatInterceptor dsInterceptor = new DruidStatInterceptor();
return dsInterceptor;
}
//JdkRegexpMethodPointcut为使用正则表达式配置切点
@Bean
@Scope("prototype")
public JdkRegexpMethodPointcut druidStatPointcut() {
JdkRegexpMethodPointcut pointcut = new JdkRegexpMethodPointcut();
pointcut.setPatterns("com.byd.*");
return pointcut;
}
//DefaultPointcutAdvisor类定义advice及 pointcut 属性。
//advice指定使用的通知方式,也就是druid提供的DruidStatInterceptor类,pointcut指定切入点。
@Bean
public DefaultPointcutAdvisor druidStatAdvisor(DruidStatInterceptor druidStatInterceptor, JdkRegexpMethodPointcut druidStatPointcut) {
DefaultPointcutAdvisor defaultPointAdvisor = new DefaultPointcutAdvisor();
defaultPointAdvisor.setPointcut(druidStatPointcut);
defaultPointAdvisor.setAdvice(druidStatInterceptor);
return defaultPointAdvisor;
}
}
3-2、用注解形式配置 servlet和filter
@WebFilter(filterName="druidWebStatFilter",urlPatterns="/*",
initParams={
@WebInitParam(name="exclusions",value="*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*")// 忽略资源
})
public class DruidFilter extends WebStatFilter {
}
@WebServlet(urlPatterns = "/druid/*",
initParams={
// @WebInitParam(name="allow",value="192.168.16.110,127.0.0.1"),// IP白名单 (没有配置或者为空,则允许所有访问)
// @WebInitParam(name="deny",value="192.168.16.111"),// IP黑名单 (存在共同时,deny优先于allow)
@WebInitParam(name="loginUsername",value="admin"),// 用户名
@WebInitParam(name="loginPassword",value="admin"),// 密码
@WebInitParam(name="resetEnable",value="false")// 禁用HTML页面上的“Reset All”功能
})
public class DruidServlet extends StatViewServlet {
/**
*
*/
private static final long serialVersionUID = -7290273811139349944L;
}
单独用一个类配置 interceptor
@Configuration
public class DruidSpringInterceptor{
//DruidStatInterceptor类为druid提供的拦截器
@Bean
public DruidStatInterceptor druidStatInterceptor() {
DruidStatInterceptor dsInterceptor = new DruidStatInterceptor();
return dsInterceptor;
}
//JdkRegexpMethodPointcut为使用正则表达式配置切点
@Bean
@Scope("prototype")
public JdkRegexpMethodPointcut druidStatPointcut() {
JdkRegexpMethodPointcut pointcut = new JdkRegexpMethodPointcut();
pointcut.setPatterns("com.byd.controller.*","com.byd.server.*","com.byd.dao.*");
return pointcut;
}
//DefaultPointcutAdvisor类定义advice及 pointcut 属性。
//advice指定使用的通知方式,也就是druid提供的DruidStatInterceptor类,pointcut指定切入点。
@Bean
public DefaultPointcutAdvisor druidStatAdvisor(DruidStatInterceptor druidStatInterceptor, JdkRegexpMethodPointcut druidStatPointcut) {
DefaultPointcutAdvisor defaultPointAdvisor = new DefaultPointcutAdvisor();
defaultPointAdvisor.setPointcut(druidStatPointcut);
defaultPointAdvisor.setAdvice(druidStatInterceptor);
return defaultPointAdvisor;
}
}