记录一下在项目中用纯 YML(application.yml 或者 application.properties)文件、Java 代码配置 Bean 和注解三种方式配置 Alibaba Druid 用于监控或者查看 SQL 状况:
1. 纯配置文件 .yml 或者 .properties
(1)pom.xml 添加相关依赖
<!-- SPRINGBOOT WEB --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- SPRINGBOOT DRUID --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.10</version> </dependency> <!-- SPRINGBOOT JDBC --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency> <!-- MYSQL --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>${mysql-connector-java.version}</scope> </dependency> <!-- LOG4J --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.16</version> <scope>compile</scope> </dependency>
(2)配置application.yml 或者 application.properties 文件,本次配置文件为application.yml
spring: # 数据源配置 datasource: type: com.alibaba.druid.pool.DruidDataSource # MYSQL 5 驱动:com.mysql.jdbc.Driver,MYSQL 6+ 驱动:com.mysql.cj.jdbc.Driver driver-class-name: com.mysql.cj.jdbc.Driver url: jdbc:mysql://127.0.0.1:3306/test?autoReconnect=true&useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=CONVERT_TO_NULL&useSSL=false&serverTimezone=GMT%2B8 username: root password: 123456 # 连接池配置 druid: # 初始化大小,最小,最大 initial-size: 5 min-idle: 5 max-active: 20 # 配置获取连接等待超时的时间 max-wait: 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,单位毫秒 time-between-eviction-runs-millis: 60000 # 配置一个连接在池中最小生存时间 min-evictable-idle-time-millis: 300000 validation-query: SELECT 1 FROM sys_user test-while-idle: true test-on-borrow: false test-on-return: false # 打开 PSCache,并且指定每个连接上 PSCache 的大小 pool-prepared-statements: true max-pool-prepared-statement-per-connection-size: 20 # 配置监控统计拦截的 Filter,去掉后监控界面 SQL 无法统计,wall 用于防火墙 filters: stat,wall,log4j # 通过 connection-properties 属性打开 mergeSql 功能;慢 SQL 记录 connection-properties: druid.stat.mergeSql\=true;druid.stat.slowSqlMillis\=5000 # 配置 DruidStatFilter web-stat-filter: enabled: true url-pattern: /* exclusions: .js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/* # 配置 DruidStatViewServlet stat-view-servlet: url-pattern: /druid/* # IP 白名单,没有配置或者为空,则允许所有访问 allow: 127.0.0.1 # IP 黑名单,若白名单也存在,则优先使用 deny: 192.168.31.253 # 禁用 HTML 中 Reset All 按钮 reset-enable: false # 登录用户名/密码 login-username: root login-password: 123
(3)启动 SpringBoot 项目访问地址http://localhost:8080/druid/login.html进行登录,若出现一下界面则配置成功
2.Java 代码配置 Bean
(1)pom.xml 依赖
<dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.10</version> </dependency>
(2)在配置文件 application.yml 中添加 Druid 配置
spring: datasource: type: com.alibaba.druid.pool.DruidDataSource # 数据源的其他配置 initialSize: 5 minIdle: 5 maxActive: 20 maxWait: 60000 timeBetweenEvictionRunsMillis: 60000 minEvictableIdleTimeMillis: 300000 validationQuery: SELECT 1 FROM DUAL testWhileIdle: true testOnBorrow: false testOnReturn: false poolPreparedStatements: true # 配置监控统计拦截的 filters,去掉后监控界面 sql 无法统计,'wall'用于防火墙 filters: stat,wall,log4j maxPoolPreparedStatementPerConnectionSize: 20 useGlobalDataSourceStat: true connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500
(3)添加 DruidConfig.java 配置文件
import javax.servlet.Filter; import javax.servlet.Servlet; import javax.sql.DataSource; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.boot.web.servlet.FilterRegistrationBean; import org.springframework.boot.web.servlet.ServletRegistrationBean; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import com.alibaba.druid.pool.DruidDataSource; import com.alibaba.druid.support.http.StatViewServlet; import com.alibaba.druid.support.http.WebStatFilter; @Configuration public class DruidConfig { @Bean // 将所有前缀为spring.datasource下的配置项都加载DataSource中 @ConfigurationProperties(prefix = "spring.datasource") public DataSource druidDataSource() { return new DruidDataSource(); } @Bean public ServletRegistrationBean<Servlet> druidServlet() { // 进行 druid 监控的配置处理 ServletRegistrationBean<Servlet> srb = new ServletRegistrationBean<>(new StatViewServlet(), "/druid/**"); // 白名单 srb.addInitParameter("allow", "127.0.0.1"); // 黑名单 srb.addInitParameter("deny", "192.168.31.253"); // 用户名 srb.addInitParameter("loginUsername", "root"); // 密码 srb.addInitParameter("loginPassword", "root"); // 是否可以重置数据源 srb.addInitParameter("resetEnable", "false"); return srb; } @Bean public FilterRegistrationBean<Filter> filterRegistrationBean() { FilterRegistrationBean<Filter> frb = new FilterRegistrationBean<>(); frb.setFilter(new WebStatFilter()); // 所有请求进行监控处理 frb.addUrlPatterns("/*"); // 排除名单 frb.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.css,/druid/*"); return frb; } }
(4)启动 SpringBoot 项目访问地址http://localhost:8080/druid/login.html进行查看登录
3.注解
(1)pom.xml 文件中添加 Druid 依赖(同方式二)
(2)配置文件添加信息(同方式二)
(3)配置 WebServlet
import javax.servlet.annotation.WebInitParam; import javax.servlet.annotation.WebServlet; import com.alibaba.druid.support.http.StatViewServlet; @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 = 1L; }
(4)配置 WebFilter
import javax.servlet.annotation.WebFilter; import javax.servlet.annotation.WebInitParam; import com.alibaba.druid.support.http.WebStatFilter; @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 { }
(5)配置启动文件SpringBootApplication 用于扫描我们配置的类
添加 @ServletComponentScan 注解进行扫描
import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.web.servlet.ServletComponentScan; @SpringBootApplication @ServletComponentScan("com.uy.servlet") public class SpringBootApplication{ public static void main(String[] args) { SpringApplication.run(SpringBootApplication.class, args); } }
(6)启动 SpringBoot 项目访问地址http://localhost:8080/druid/login.html进行查看登录
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