springboot集成druid數據連接池和監控

一、引入依賴包

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
​​​​​​​    <version>1.1.10</version>
</dependency>

二、springboot裝配

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import com.alibaba.druid.support.spring.stat.DruidStatInterceptor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
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 org.springframework.context.annotation.Primary;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;

import javax.sql.DataSource;
import java.sql.SQLException;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.StringTokenizer;

/**
 * @Author tangcr
 * @Date 2019/9/18
 * @Description TODO
 */
@Configuration
public class DruidConfig {
    private Logger logger = LoggerFactory.getLogger(DruidConfig.class);

    @Value("${spring.datasource.url}")
    private String dbUrl;

    @Value("${spring.datasource.username}")
    private String username;

    @Value("${spring.datasource.password}")
    private String password;

    @Value("${spring.datasource.driver-class-name}")
    private String driverClassName;

    @Value("${spring.datasource.initialSize}")
    private int initialSize;

    @Value("${spring.datasource.minIdle}")
    private int minIdle;

    @Value("${spring.datasource.maxActive}")
    private int maxActive;

    @Value("${spring.datasource.maxWait}")
    private int maxWait;

    @Value("${spring.datasource.timeBetweenEvictionRunsMillis}")
    private int timeBetweenEvictionRunsMillis;

    @Value("${spring.datasource.minEvictableIdleTimeMillis}")
    private int minEvictableIdleTimeMillis;

    @Value("${spring.datasource.validationQuery}")
    private String validationQuery;

    @Value("${spring.datasource.testWhileIdle}")
    private boolean testWhileIdle;

    @Value("${spring.datasource.testOnBorrow}")
    private boolean testOnBorrow;

    @Value("${spring.datasource.testOnReturn}")
    private boolean testOnReturn;

    @Value("${spring.datasource.poolPreparedStatements}")
    private boolean poolPreparedStatements;

    @Value("${spring.datasource.maxPoolPreparedStatementPerConnectionSize}")
    private int maxPoolPreparedStatementPerConnectionSize;

    @Value("${spring.datasource.filters}")
    private String filters;

    @Value("{spring.datasource.connectionProperties}")
    private String connectionProperties;

    @Value("${spring.datasource.loginUsername}")
    private String loginUsername;

    @Value("${spring.datasource.loginPassword}")
    private String loginPassword;

    @Bean(name="transactionManager")
    public DataSourceTransactionManager transactionManager(){
        return new DataSourceTransactionManager(dataSource());
    }

    @Bean
    @Primary
    public DataSource dataSource() {
        DruidDataSource datasource = new DruidDataSource();

        datasource.setUrl(this.dbUrl);
        datasource.setUsername(username);
        datasource.setPassword(password);
        datasource.setDriverClassName(driverClassName);

        //configuration
        //對於mysql utf8mb4格式的支持
        String connectionInitSqls = "SET NAMES utf8mb4";
        StringTokenizer tokenizer = new StringTokenizer(connectionInitSqls, ";");
        //重點設置該參數
        datasource.setConnectionInitSqls(Collections.list(tokenizer));
        datasource.setInitialSize(initialSize);
        datasource.setMinIdle(minIdle);
        datasource.setMaxActive(maxActive);
        datasource.setMaxWait(maxWait);
        datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
        datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
        datasource.setValidationQuery(validationQuery);
        datasource.setTestWhileIdle(testWhileIdle);
        datasource.setTestOnBorrow(testOnBorrow);
        datasource.setTestOnReturn(testOnReturn);
        datasource.setPoolPreparedStatements(poolPreparedStatements);
        datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
        try {
            datasource.setFilters(filters);
        } catch (SQLException e) {
            logger.error("druid configuration initialization filter", e);
        }
        datasource.setConnectionProperties(connectionProperties);

        return datasource;
    }


    /**
     * 配置Druid監控
     *
     * @param :
     * @return: org.springframework.boot.web.servlet.ServletRegistrationBean
     */
    @Bean
    public ServletRegistrationBean druidServlet() {
        // 註冊服務
        ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");
        // IP白名單(爲空表示,所有的都可以訪問,多個IP的時候用逗號隔開)
        servletRegistrationBean.addInitParameter("allow", "127.0.0.1");
        // IP黑名單 (存在共同時，deny優先於allow)
        servletRegistrationBean.addInitParameter("deny", "127.0.0.2");
        // 設置控制檯登錄的用戶名和密碼
        servletRegistrationBean.addInitParameter("loginUsername", loginUsername);
        servletRegistrationBean.addInitParameter("loginPassword", loginPassword);
        // 是否能夠重置數據
        servletRegistrationBean.addInitParameter("resetEnable", "false");
        return servletRegistrationBean;
    }

    /**
     * 配置web監控的filter
     *
     * @param :
     * @return: org.springframework.boot.web.servlet.FilterRegistrationBean
     */
    @Bean
    public FilterRegistrationBean webStatFilter() {
        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());
        // 添加過濾規則
        Map<String, String> initParams = new HashMap<>(1);
        // 設置忽略請求
        initParams.put("exclusions", "*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*");
        filterRegistrationBean.setInitParameters(initParams);
        filterRegistrationBean.addInitParameter("profileEnable", "true");
        filterRegistrationBean.addInitParameter("principalCookieName", "USER_COOKIE");
        filterRegistrationBean.addInitParameter("principalSessionName", "");
        filterRegistrationBean.addInitParameter("aopPatterns", "com.example.demo.service");
        // 驗證所有請求
        filterRegistrationBean.addUrlPatterns("/*");
        return filterRegistrationBean;
    }

    /**
     * 配置spring監控
     * DruidStatInterceptor: druid提供的攔截器
     *
     * @param :
     * @return: com.alibaba.druid.support.spring.stat.DruidStatInterceptor
     */
    @Bean
    public DruidStatInterceptor druidStatInterceptor() {
        DruidStatInterceptor dsInterceptor = new DruidStatInterceptor();
        return dsInterceptor;
    }
}

三、application配置文件配置

#數據連接池
#數據庫驅動類型
spring.datasource.driver-class-name = com.mysql.jdbc.Driver
#數據庫地址
spring.datasource.url = jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8&useSSL=false
#數據庫賬號
spring.datasource.username = root
#數據庫密碼
spring.datasource.password = 123456
#數據鏈接池類型
spring.datasource.type = com.alibaba.druid.pool.DruidDataSource
spring.datasource.initialSize = 20
spring.datasource.minIdle = 20
spring.datasource.maxActive = 100
spring.datasource.maxWait = 60000
spring.datasource.timeBetweenEvictionRunsMillis = 60000
spring.datasource.minEvictableIdleTimeMillis = 300000
spring.datasource.validationQuery = SELECT 1 FROM DUAL
spring.datasource.testWhileIdle = true
spring.datasource.testOnBorrow = true
spring.datasource.testOnReturn = false
spring.datasource.poolPreparedStatements = false
spring.datasource.maxPoolPreparedStatementPerConnectionSize = -1
spring.datasource.filters = stat,wall,slf4j
spring.datasource.connectionProperties = druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
#useGlobalDataSourceStat: true  # 合併多個DruidDataSource的監控數據
# SQL監控後臺登錄用戶名
spring.datasource.loginUsername = admin
# SQL監控後臺登錄用戶密碼
spring.datasource.loginPassword = admin

四、訪問druid監控

 訪問http://127.0.0.1:8080/druid/index.html，輸入配置的賬號和密碼