spring-boot 集成Druid数据源

2019-11-10 20:00:31

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sPRing boot 默认是不支持Druid数据源的，个人想用阿里的druid数据源提供的监控功能

maven引入的其它必要jar包就不提了，这里明提醒一下要使用到@ConfigurationProperties，所以要引入spring-boot-configuration-processor

<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-configuration-processor</artifactId> <optional>true</optional></dependency>

在application.properties写上druid的配置信息如下，注意到前缀用spring.datasource.druid，为我的自定义配置前缀

# DATASOURCE (DataSourceAutoConfiguration & DataSourceProperties)spring.datasource.type=com.alibaba.druid.pool.DruidDataSourcespring.datasource.driverClassName=com.MySQL.jdbc.Driverspring.datasource.url=jdbc:mysql://127.0.0.1:3306/mboot?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=UTC&autoReconnect=truespring.datasource.username=rootspring.datasource.passWord=passwordspring.datasource.name=druid# 下面为连接池的补充设置，应用到上面所有数据源中# 初始化大小，最小，最大spring.datasource.druid.initialSize=5spring.datasource.druid.minIdle=5spring.datasource.druid.maxActive=20# 配置获取连接等待超时的时间spring.datasource.druid.maxWait=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，单位是毫秒spring.datasource.druid.timeBetweenEvictionRunsMillis=60000# 配置一个连接在池中最小生存的时间，单位是毫秒spring.datasource.druid.minEvictableIdleTimeMillis=300000spring.datasource.druid.validationQuery=SELECT 1 FROM t_userspring.datasource.druid.testWhileIdle=truespring.datasource.druid.testOnBorrow=truespring.datasource.druid.testOnReturn=false# 打开PSCache，并且指定每个连接上PSCache的大小spring.datasource.druid.poolPreparedStatements=truespring.datasource.druid.maxPoolPreparedStatementPerConnectionSize=20# 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spring.datasource.druid.filters=stat,wall,log4j# 通过connectProperties属性来打开mergeSql功能；慢SQL记录spring.datasource.druid.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000# 合并多个DruidDataSource的监控数据#spring.datasource.druid.useGlobalDataSourceStat=true

接下来就是Druid配置的主角了：DruidDataSourceConfiguration.class

package cn.cherish.mboot.config;import com.alibaba.druid.support.http.StatViewServlet;import com.alibaba.druid.support.http.WebStatFilter;import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;import org.springframework.boot.autoconfigure.jdbc.DataSourceProperties;import org.springframework.boot.context.properties.ConfigurationProperties;import org.springframework.boot.jdbc.DatabaseDriver;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;import java.util.Map;/** * 自我感觉屌屌的 * Created by Cherish on 2017/2/8. */@Configuration@ConditionalOnClass(com.alibaba.druid.pool.DruidDataSource.class)@ConditionalOnProperty(name = "spring.datasource.type", havingValue = "com.alibaba.druid.pool.DruidDataSource", matchIfMissing = true)public class DruidDataSourceConfiguration { @SuppressWarnings("unchecked") protected <T> T createDataSource(DataSourceProperties properties, Class<? extends DataSource> type) { return (T) properties.initializeDataSourceBuilder().type(type).build(); } /** * @see org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration.Tomcat 仿写的你可以去了解 * @param properties 读入的配置 * @return DruidDataSource */ @Bean @ConfigurationProperties("spring.datasource.druid") public com.alibaba.druid.pool.DruidDataSource dataSource(DataSourceProperties properties) { com.alibaba.druid.pool.DruidDataSource dataSource = createDataSource( properties, com.alibaba.druid.pool.DruidDataSource.class); DatabaseDriver databaseDriver = DatabaseDriver.fromJdbcUrl(properties.determineUrl()); String validationQuery = databaseDriver.getValidationQuery(); if (validationQuery != null) { dataSource.setTestOnBorrow(true); dataSource.setValidationQuery(validationQuery); } return dataSource; } /** * 注册一个StatViewServlet */ @Bean public ServletRegistrationBean druidStatViewServlet(){ //org.springframework.boot.context.embedded.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 (存在共同时，deny优先于allow) : 如果满足deny的话提示: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密码. servletRegistrationBean.addInitParameter("loginUsername","root"); servletRegistrationBean.addInitParameter("loginPassword","password"); //是否能够重置数据. servletRegistrationBean.addInitParameter("resetEnable","false");// 禁用HTML页面上的“Reset All”功能 return servletRegistrationBean; } /** * 注册一个：filterRegistrationBean */ @Bean public FilterRegistrationBean druidStatFilter(){ FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter()); filterRegistrationBean.setName("druidWebStatFilter"); //添加过滤规则. filterRegistrationBean.addUrlPatterns("/*"); //添加忽略的格式信息. filterRegistrationBean.addInitParameter("exclusions","*.js,*.gif,*.jpg,*.png,*.CSS,*.ico,/druid/*"); return filterRegistrationBean; }}

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