Grails3更换链接池为阿里巴巴Druid

Grails3默认数据库链接池为tomcat-jdbc pool，性能较druid、HikariCP差太多，因此想换成其余链接池

• 因为默认使用的是tomcat-jdbc链接池，须要去掉依赖

// runtime "com.h2database:h2"
// runtime "org.apache.tomcat:tomcat-jdbc"

// 添加阿里巴巴druid链接池
compile group: 'com.alibaba', name: 'druid', version: '1.1.18'
compile 'mysql:mysql-connector-java:5.1.40'
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• grails-app/conf/applicaiton.yml配置也要注释掉默认的链接池

dataSource:
# pooled: true
 jmxExport: true
 driverClassName: com.mysql.jdbc.Driver
 username: root
 password: root
 dialect: org.hibernate.dialect.MySQL5InnoDBDialect
 url: jdbc:mysql://localhost:3306/g3?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&useSSL=false
    # 为了兼容grails，让Hibernate自动建表，因此在dataSource下增长链接池相关的配置
 druid:
 minIdle: 1
 maxActive: 40
 maxWait: 60000
 initialSize: 20
 testWhileIdle: true
 testOnBorrow: false
 testOnReturn: false
 removeAbandoned: true
 filters: stat,wall,slf4j
 validationQuery: select 'x'
 useGlobalDataSourceStat: true
 poolPreparedStatements: true
 minEvictableIdleTimeMillis: 300000
 timeBetweenEvictionRunsMillis: 60000
 connectionProperties: clientEncoding=UTF-8
 maxPoolPreparedStatementPerConnectionSize: 20
environments:
 development:
 dataSource:
 dbCreate: create-drop
 url: jdbc:mysql://localhost:3306/g3?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&useSSL=false
 test:
 dataSource:
 dbCreate: update
 url: jdbc:mysql://localhost:3306/g3?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&useSSL=false
 production:
 dataSource:
 dbCreate: update
 url: jdbc:mysql://localhost:3306/g3?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&useSSL=false
server:
 port: 8081  # TRANSACTION_READ_COMMITTED
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• grails-app/conf/spring/resources.groovy配置

// Place your Spring DSL code here
beans = {

    // 监控管理页面配置（管理用户名、密码）
    druidConsoleServlet(org.springframework.boot.web.servlet.ServletRegistrationBean) {
        servlet = bean(com.alibaba.druid.support.http.StatViewServlet)
        urlMappings = ["/druid/*"]
// urlMappings = ["*.js","*.gif","*.jpg","*.png","*.css","*.ico","/druid/*"]
        initParameters = [
                "loginUsername": "root",
                "loginPassword": "123456",
                "allow": "127.0.0.1",
                "deny": ""
        ]
// loadOnStartup = 2
    }


    // alibaba druid配置
    dataSource(com.alibaba.druid.pool.DruidDataSource) { bean ->
        bean.initMethod = 'init'
        bean.destroyMethod = 'close'
        driverClassName = grailsApplication.config.dataSource.driverClassName
        url = grailsApplication.config.dataSource.url
        username = grailsApplication.config.dataSource.username
        password = grailsApplication.config.dataSource.password
        initialSize = grailsApplication.config.dataSource.druid.initialSize
        minIdle = grailsApplication.config.dataSource.druid.minIdle
        maxActive = grailsApplication.config.dataSource.druid.maxActive
        maxWait = grailsApplication.config.dataSource.druid.maxWait
        timeBetweenEvictionRunsMillis = grailsApplication.config.dataSource.druid.timeBetweenEvictionRunsMillis
        minEvictableIdleTimeMillis = grailsApplication.config.dataSource.druid.minEvictableIdleTimeMillis
        validationQuery = grailsApplication.config.dataSource.druid.validationQuery
        removeAbandoned = grailsApplication.config.dataSource.druid.removeAbandoned
        testWhileIdle = grailsApplication.config.dataSource.druid.testWhileIdle
        connectionProperties = grailsApplication.config.dataSource.druid.connectionProperties
        testOnBorrow = grailsApplication.config.dataSource.druid.testOnBorrow
        poolPreparedStatements = grailsApplication.config.dataSource.druid.poolPreparedStatements
        testOnReturn = grailsApplication.config.dataSource.druid.testOnReturn
        useGlobalDataSourceStat = grailsApplication.config.dataSource.druid.useGlobalDataSourceStat
        maxPoolPreparedStatementPerConnectionSize = grailsApplication.config.dataSource.druid.maxPoolPreparedStatementPerConnectionSize
        filters = grailsApplication.config.dataSource.druid.filters
    }
}
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• grails-app/conf/logback.groovy添加日志配置

// 日志采集
logger('com.alibaba', DEBUG, ['STDOUT'], false)
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• 启动项目，出现日志

2019-07-03 03:15:06.691  WARN --- [           main] com.alibaba.druid.pool.DruidDataSource   : removeAbandoned is true, not use in productiion.
2019-07-03 03:15:07.078  INFO --- [           main] com.alibaba.druid.pool.DruidDataSource   : {dataSource-1} inited
Grails application running at http://localhost:8081 in environment: development
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• web监控地址

http://127.0.0.1:8081/druid/index.html
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总结

web监控没法记录sql日志，防火墙也没用起来，只是链接池生效了，如何测试链接池生效呢？关闭数据库服务，访问一下，控制台报没法链接数据库的错误，重启数据库服务，再次刷新页面，数据库链接上，可以取到数据，但愿有兴趣的朋友能够研究下如何在web端能跟踪sql，以及把防火墙用起来。

• 项目地址

参考

参考地址1 参考地址2 Grails2参考