Spring boot项目整合阿里巴巴druid数据库连接池，Java开发自学技巧

为了在Spring Boot项目中整合阿里巴巴的Druid数据库连接池，你需要按照以下步骤操作：

1. 在pom.xml中添加Druid依赖：

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid-spring-boot-starter</artifactId>
    <version>1.2.8</version>
</dependency>

2. 在application.properties或application.yml中配置Druid数据库连接池：

# 数据库连接信息
spring.datasource.url=jdbc:mysql://localhost:3306/your_database
spring.datasource.username=your_username
spring.datasource.password=your_password
 
# 使用Druid数据库连接池
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
 
# Druid数据库连接池配置
spring.datasource.druid.initial-size=5
spring.datasource.druid.min-idle=5
spring.datasource.druid.max-active=20
spring.datasource.druid.max-wait=60000
spring.datasource.druid.validation-query=SELECT 1 FROM DUAL
spring.datasource.druid.test-on-borrow=false
spring.datasource.druid.test-on-return=false
spring.datasource.druid.test-while-idle=true
spring.datasource.druid.time-between-eviction-runs-millis=60000

3. 确保你的Spring Boot应用中已经启用了Druid监控服务（可选）：

@Configuration
@ConditionalOnClass(DruidDataSource.class)
@AutoConfigureAfter(DataSourceAutoConfiguration.class)
public class DruidConfig {
 
    @Bean
    public ServletRegistrationBean<StatViewServlet> druidServlet() {
        ServletRegistrationBean<StatViewServlet> servletRegistrationBean = 
          new ServletRegistrationBean<>(new StatViewServlet(), "/druid/*");
        // 可选配置
        servletRegistrationBean.addInitParameter("loginUsername", "your_username");
        servletRegistrationBean.addInitParameter("loginPassword", "your_password");
        return servletRegistrationBean;
    }
 
    @Bean
    public FilterRegistrationBean<WebStatFilter> druidFilter() {
        FilterRegistrationBean<WebStatFilter> filterRegistrationBean = 
          new FilterRegistrationBean<>(new WebStatFilter());
        filterRegistrationBean.addUrlPatterns("/*");
        filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
        return filterRegistrationBean;
    }
}

完成以上步骤后，Druid数据库连接池将会被自动配置并整合到你的Spring Boot项目中。你可以通过访问http://<your_host>:<port>/<context-path>/druid来访问Druid提供的监控页面，查看数据库连接池的状态和监控信息。