• 【Java】Springboot集成Druid


      Springboot集成Druid方案:一个是在POM中直接配置druid-spring-boot-starter,不用写任何代码;一个是配置druid,写几行代码,可以加入;在方案一基础上加入stat、wall后进行验证登录。

      测试环境是:SpringBoot2.1.4.RELEASE。

    一、直接使用druid-spring-boot-starter

    1、POM配置

            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>1.1.10</version>
            </dependency>
            <!--自启动Druid管理后台-->
                    <dependency>
                        <groupId>com.alibaba</groupId>
                        <artifactId>druid-spring-boot-starter</artifactId>
                        <version>1.1.10</version>
                    </dependency>

    2、application.properties配置

    ### db config ###
    spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
    spring.datasource.driverClassName=org.postgresql.Driver
    spring.datasource.url=jdbc:postgresql://localhost:5432/XXX?useUnicode=true&characterEncoding=utf8&currentSchema=public
    spring.datasource.username=postgres
    spring.datasource.password=XXX
    spring.jpa.properties.hibernate.jdbc.lob.non_contextual_creation=true
    spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQLDialect
    spring.jpa.properties.hibernate.hbm2ddl.auto=update
    #config druid
    #连接池的设置
    #初始化时建立物理连接的个数
    spring.datasource.druid.initial-size=5
    #最小连接池数量
    spring.datasource.druid.min-idle=5
    #最大连接池数量 maxIdle已经不再使用
    spring.datasource.druid.max-active=20
    #获取连接时最大等待时间,单位毫秒
    spring.datasource.druid.max-wait=60000
    #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.druid.test-while-idle=true
    #既作为检测的间隔时间又作为testWhileIdel执行的依据
    spring.datasource.druid.time-between-eviction-runs-millis=60000
    #销毁线程时检测当前连接的最后活动时间和当前时间差大于该值时,关闭当前连接
    spring.datasource.druid.min-evictable-idle-time-millis=30000
    #用来检测连接是否有效的sql 必须是一个查询语句
    #mysql中为 select 'x'
    #oracle中为 select 1 from dual
    spring.datasource.druid.validation-query=select 'x'
    #申请连接时会执行validationQuery检测连接是否有效,开启会降低性能,默认为true
    spring.datasource.druid.test-on-borrow=false
    #归还连接时会执行validationQuery检测连接是否有效,开启会降低性能,默认为true
    spring.datasource.druid.test-on-return=false
    #当数据库抛出不可恢复的异常时,抛弃该连接
    spring.datasource.druid.exception-sorter=true
    #是否缓存preparedStatement,mysql5.5+建议开启
    #spring.datasource.druid.pool-prepared-statements=true
    #当值大于0时poolPreparedStatements会自动修改为true
    spring.datasource.druid.max-pool-prepared-statement-per-connection-size=20
    #配置扩展插件
    spring.datasource.druid.filters=stat,wall
    #通过connectProperties属性来打开mergeSql功能;慢SQL记录
    spring.datasource.druid.connection-properties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500
    #合并多个DruidDataSource的监控数据
    spring.datasource.druid.use-global-data-source-stat=true
    #设置访问druid监控页的账号和密码,默认没有
    #spring.datasource.druid.stat-view-servlet.login-username=admin
    #spring.datasource.druid.stat-view-servlet.login-password=admin
    
    ### mybatis config ###
    mybatis.config-locations=classpath:mybatis/mybatis-config.xml
    mybatis.mapper-locations=classpath:mybatis/mapper/*.xml
    mybatis.type-aliases-package=com.jrsc.supervisor.model
    ### log config ###
    logging.config=classpath:logback-spring.xml

    3、输入http://localhost:9091/druid/webapp.html后,即可看到Druid监控面板

    PS:广告无处不在

    二、使用代码,可验证登录的方案

    1、POM配置,删除:druid-spring-boot-starter

            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>1.1.10</version>
            </dependency>
            <!--自启动Druid管理后台-->
            <!--        <dependency>-->
            <!--            <groupId>com.alibaba</groupId>-->
            <!--            <artifactId>druid-spring-boot-starter</artifactId>-->
            <!--            <version>1.1.10</version>-->
            <!--        </dependency>-->

    2、application.properties配置不变

    3、新建一个类:DruidConfig,注意包的引入,特别是:

    package com.jrsc.supervisor.druid;
    
    import com.alibaba.druid.pool.DruidDataSource;
    import com.alibaba.druid.support.http.StatViewServlet;
    import com.alibaba.druid.support.http.WebStatFilter;
    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 javax.sql.DataSource;

    3、DruidConfig具体实现如下:

    @Configuration
    public class DruidConfig {
    
        @Bean
        @ConfigurationProperties(prefix = "spring.datasource")
        public DataSource getDataSource() {
            return new DruidDataSource();
        }
    
        @Bean
        public ServletRegistrationBean druidStatViewServlet() {
            //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(同时存在时,deny优先于allow)
            //如果满足deny,就提示: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和密码
            servletRegistrationBean.addInitParameter("loginUsername", "admin");
            servletRegistrationBean.addInitParameter("loginPassword", "123456");
            servletRegistrationBean.addInitParameter("resetEnable", "false");
            return servletRegistrationBean;
        }
    
    
        @Bean
        public FilterRegistrationBean druidStatFilter() {
            FilterRegistrationBean filterRegistrationBean =
                    new FilterRegistrationBean(new WebStatFilter());
            //添加过滤规则
            filterRegistrationBean.addUrlPatterns("/*");
            //添加需要忽略的格式信息
            filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif," +
                    "*.jpg,*.png, *.css,*.ico,/druid/*");
            return filterRegistrationBean;
    
        }

    4、对于SpringBoot的启动类,加入注解:@ServletComponentScan

    5、输入:http://localhost:9091/druid/sql.html,观察Druid监控面板

    三、通过在方案一基础上加入如下代码,实现验证登录

    #设置访问druid监控页的账号和密码,默认没有
    ## Druid 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=*.gif,*.png,*.jpg,*.html,*.js,*.css,*.ico,/druid/*
    # 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=true
    spring.datasource.druid.stat-view-servlet.login-username=admin
    spring.datasource.druid.stat-view-servlet.login-password=123456
    spring.datasource.druid.stat-view-servlet.allow=
    spring.datasource.druid.stat-view-servlet.deny=

    四、测试

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  • 原文地址:https://www.cnblogs.com/defineconst/p/10879824.html
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