spring-boot 集成Druid數據源

2019-11-10 19:32:57

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sPRing boot 默認是不支持Druid數據源的，個人想用阿里的druid數據源提供的監控功能

maven引入的其它必要jar包就不提了，這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寫上druid的配置信息如下，注意到前綴用spring.datasource.druid，為我的自定義配置前綴

# 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# 下面為連接池的補充設置，應用到上面所有數據源中# 初始化大小，最小，最大spring.datasource.druid.initialSize=5spring.datasource.druid.minIdle=5spring.datasource.druid.maxActive=20# 配置獲取連接等待超時的時間spring.datasource.druid.maxWait=60000# 配置間隔多久才進行一次檢測，檢測需要關閉的空閑連接，單位是毫秒spring.datasource.druid.timeBetweenEvictionRunsMillis=60000# 配置一個連接在池中最小生存的時間，單位是毫秒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# 打開PSCache，并且指定每個連接上PSCache的大小spring.datasource.druid.poolPreparedStatements=truespring.datasource.druid.maxPoolPreparedStatementPerConnectionSize=20# 配置監控統計攔截的filters，去掉后監控界面sql無法統計，'wall'用于防火墻spring.datasource.druid.filters=stat,wall,log4j# 通過connectProperties屬性來打開mergeSql功能；慢SQL記錄spring.datasource.druid.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000# 合并多個DruidDataSource的監控數據#spring.datasource.druid.useGlobalDataSourceStat=true

接下來就是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;/** * 自我感覺屌屌的 * 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 仿寫的你可以去了解 * @param properties 讀入的配置 * @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; } /** * 注冊一個StatViewServlet */ @Bean public ServletRegistrationBean druidStatViewServlet(){ //org.springframework.boot.context.embedded.ServletRegistrationBean提供類的進行注冊. ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(),"/druid/*"); //添加初始化參數：initParams //白名單： servletRegistrationBean.addInitParameter("allow","127.0.0.1"); //ip黑名單 (存在共同時，deny優先于allow) : 如果滿足deny的話提示:Sorry, you are not permitted to view this page. servletRegistrationBean.addInitParameter("deny","192.168.1.73"); //登錄查看信息的賬號密碼. servletRegistrationBean.addInitParameter("loginUsername","root"); servletRegistrationBean.addInitParameter("loginPassword","password"); //是否能夠重置數據. servletRegistrationBean.addInitParameter("resetEnable","false");// 禁用HTML頁面上的“Reset All”功能 return servletRegistrationBean; } /** * 注冊一個：filterRegistrationBean */ @Bean public FilterRegistrationBean druidStatFilter(){ FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter()); filterRegistrationBean.setName("druidWebStatFilter"); //添加過濾規則. 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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