一篇搞定SpringBoot整合JDBC以及配置Druid数据源难道不香么？-蒲公英云

一篇搞定SpringBoot整合JDBC以及配置Druid数据源难道不香么？

冷不防 2022-12-17 10:54 86阅读 0赞

整合JDBC

只需要两个依赖，在pom.xml文件中导入：

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-jdbc</artifactId>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
         <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
    </dependency>

application.yml文件配置数据库连接：

spring:
  datasource:
    username: jektong
    password: 123456
    url: jdbc:mysql://localhost:3306/jektong?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8
    driver-class-name: com.mysql.jdbc.Driver

找个测试类测试一下：

@SpringBootTest
class StudyVideoApplicationTests { 
    @Autowired
    private DataSource dataSource;
    @Test
    void contextLoads() throws SQLException { 
        Connection connection = dataSource.getConnection();
        System.out.println(connection);
    }
}

输出类似这样的:说明配置没有问题

HikariProxyConnection@1957530885 wrapping com.mysql.cj.jdbc.ConnectionImpl@676ff3b0

整合Druid

使用阿里的Druid主要就是因为Druid的监控系统有点强大
主要依赖

<!-- 配置阿里巴巴连接池 -->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.1.21</version>
</dependency>

Druid数据源的配置：这些配置拿来即用

spring:
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://localhost:3306/jektong?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8
    username: jektong
    password: 123456
    # 指定数据源
    type: com.alibaba.druid.pool.DruidDataSource
    # 初始化连接个数
    initialSize: 5
    # 最小连接池
    minIdle: 5
    # 最大连接池
    maxActive: 20
    # 连接等待超时的等待时间
    maxWait: 60000
    # 多久检测一次
    timeBetweenEvictionRunsMillis: 60000
    minEvictableIdleTimeMillis: 300000
    validationQuery: SELECT 1 FROM DUAL
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
    filters: stat,wall,log4j
    logSlowSql: true
    poolPreparedStatements: true
    maxPoolPreparedStatementPerConnectionSize: 20
    connectionProperties: druid.statmergeSql=true;druid.stat.slowSqlMillis=5000

建立配置类DruidCofig.java配置文件

package com.jektong.config;
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;
/** * @author jektong * @Date 2020/10/5 16:02 */
@Configuration
public class DruidConfig { 
    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource druidDataSource() { 
        return new DruidDataSource();
    }
    // 后台监控
    @Bean
    public ServletRegistrationBean statViewServlet() { 
        // 现在要进行druid监控的配置处理操作
        ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(
                new StatViewServlet(), "/druid/*");
        // 白名单,多个用逗号分割， 如果allow没有配置或者为空，则允许所有访问
        servletRegistrationBean.addInitParameter("allow", "127.0.0.1,172.29.32.54");
        // 黑名单,多个用逗号分割 (共同存在时，deny优先于allow)
        servletRegistrationBean.addInitParameter("deny", "192.168.1.110");
        // 控制台管理用户名
        servletRegistrationBean.addInitParameter("loginUsername", "admin");
        // 控制台管理密码
        servletRegistrationBean.addInitParameter("loginPassword", "eju1314");
        // 是否可以重置数据源，禁用HTML页面上的“Reset All”功能
        servletRegistrationBean.addInitParameter("resetEnable", "false");
        return servletRegistrationBean;
    }
    @Bean
    public FilterRegistrationBean filterRegistrationBean() { 
        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();
        filterRegistrationBean.setFilter(new WebStatFilter());
        //所有请求进行监控处理
        filterRegistrationBean.addUrlPatterns("/*");
        //添加不需要忽略的格式信息
        filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.css,/druid/*");
        return filterRegistrationBean;
    }
}