数据库连接池——Druid

Druid数据库连接池

一、SpringBoot整合Druid

1.1、在pom.xml中添加依赖

<!-- Druid Pool -->
<dependency>
	<groupId>com.alibaba</groupId>
	<artifactId>druid</artifactId>
	<version>1.1.9</version>
</dependency>
<dependency>
	<groupId>com.alibaba</groupId>
	<artifactId>druid-spring-boot-starter</artifactId>
	<version>1.1.10</version>
</dependency>
<dependency>
	<groupId>log4j</groupId>
	<artifactId>log4j</artifactId>
	<version>1.2.17</version>
</dependency>

1.2、配置Druid（方式：一）application.properties

spring.datasource.name=db
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.druid.url=jdbc:mysql://127.0.0.1:3306/sipo?useUnicode=true&characterEncoding=utf-8&useSSL=false&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true
spring.datasource.druid.username=root
spring.datasource.druid.password=root
spring.datasource.druid.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.druid.filters=stat,wall,log4j,config
spring.datasource.druid.initial-size=1
spring.datasource.druid.time-between-eviction-runs-millis=60000
spring.datasource.druid.validation-query=select 'x'
spring.datasource.druid.test-while-idle=true
spring.datasource.druid.test-on-borrow=false
spring.datasource.druid.test-on-return=false
spring.datasource.druid.pool-prepared-statements=true
spring.datasource.druid.min-idle=1
spring.datasource.druid.min-evictable-idle-time-millis=300000
spring.datasource.druid.max-wait=60000
spring.datasource.druid.max-active=100
spring.datasource.druid.max-open-prepared-statements=50
spring.datasource.druid.max-pool-prepared-statement-per-connection-size=20
# WebStatFilter配置，说明请参考Druid Wiki，配置_配置WebStatFilter
spring.datasource.druid.web-stat-filter.enabled=true
spring.datasource.druid.web-stat-filter.url-pattern=/*
spring.datasource.druid.web-stat-filter.exclusions=*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*
# StatViewServlet配置，说明请参考Druid Wiki，配置_StatViewServlet配置
spring.datasource.druid.stat-view-servlet.enabled= true
spring.datasource.druid.stat-view-servlet.url-pattern= /druid/*
spring.datasource.druid.stat-view-servlet.reset-enable= false
spring.datasource.druid.stat-view-servlet.login-username= admin
spring.datasource.druid.stat-view-servlet.login-password= admin
spring.datasource.druid.stat-view-servlet.allow= 127.0.0.1
#访问黑名单
#spring.datasource.druid.stat-view-servlet.deny= 192.168.32.139
# 配置StatFilter
spring.datasource.druid.filter.stat.db-type=mysql
spring.datasource.druid.filter.stat.log-slow-sql=true
spring.datasource.druid.filter.stat.slow-sql-millis=5000
# 配置WallFilter
spring.datasource.druid.filter.wall.enabled=true
spring.datasource.druid.filter.wall.db-type=mysql
spring.datasource.druid.filter.wall.config.delete-allow=true
spring.datasource.druid.filter.wall.config.drop-table-allow=true
spring.datasource.druid.filter.wall.config.multi-statement-allow=true
spring.datasource.druid.filter.wall.config.must-parameterized=true

1.3、配置Druid（方式：二）@Configuration

@Configuration
@ConditionalOnClass(com.alibaba.druid.pool.DruidDataSource.class)
@ConditionalOnProperty(name = "spring.datasource.type", havingValue = "com.alibaba.druid.pool.DruidDataSource", matchIfMissing = true)
public class DruidDataSource {
    
    @Bean
    @ConfigurationProperties("spring.datasource.druid")
    public DataSource dataSourceOne(){
        
        return DruidDataSourceBuilder.create().build();
    }
    /**
     * 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","123456");
        //是否能够重置数据.
        servletRegistrationBean.addInitParameter("resetEnable","false");
        return servletRegistrationBean;
    }

    /**
     * 注册一个：filterRegistrationBean
     * @return
     */
    @Bean
    public FilterRegistrationBean druidStatFilter(){
        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(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;
    }
}

1.4、访问

http://localhost:8080/xxxx/druid/sql.html

二、资料

2.1、Druid官网资料

https://github.com/alibaba/druid