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  • SpringBoot 三种方式配置 Druid(包括纯配置文件配置)

    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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  • 原文地址:https://www.cnblogs.com/yjq520/p/10779356.html
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