一、依赖

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!--jdbc启动器-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <!--数据库驱动坐标-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.18</version>
        </dependency>
        <!--    alibaba 的    druid数据源依赖-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.23</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

二、配置

spring:
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    initialSize: 5
    minIdle: 5
    maxActive: 20
    maxWait: 60000
    timeBetweenEvictionRunsMillis: 60000
    minEvictableIdleTimeMillis: 300000
    validationQuery: SELECT 1 FROM DUAL
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
    poolPreparedStatements: true
    #   配置监控统计拦截的filters
    filters: stat
    maxPoolPreparedStatementPerConnectionSize: 20
    useGlobalDataSourceStat: true
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/test?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf-8&useSSL=false
    username: root
    password: 123456

• druid配置

/**
 * Druid 数据源配置
 */
@Configuration
public class DruidConfig {
    /**
     * 配置绑定
     * @return
     */
    @Bean
    @ConfigurationProperties(prefix = "spring.datasource")
    public DruidDataSource druid() {
        return new DruidDataSource();
    }

    /**Druid 监视器配置===>访问http://localhost:8080/druid登录即可开始监控
     * Druid的servlet
     * @return
     */
    @Bean
    public ServletRegistrationBean statViewServlet() {
        ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet());
        Map<String, String> initParams = new HashMap<>();
        initParams.put("loginUsername", "admin");
        initParams.put("loginPassword", "123");
        initParams.put("allow","127.0.0.1");
        bean.setInitParameters(initParams);
        bean.setUrlMappings(Arrays.asList("/druid/*"));
        return bean;
    }
    @Bean
    public FilterRegistrationBean webStatFilter() {
        FilterRegistrationBean<WebStatFilter> bean = new FilterRegistrationBean<>(new WebStatFilter());
        HashMap<String, String> initParams = new HashMap<>();
        initParams.put("exclusions", "/css,/druid/*");
        bean.setInitParameters(initParams);
        bean.setUrlPatterns(Arrays.asList("/*"));
        return bean;
    }
}

三、使用Spring-JDBC

• 测试连接

@SpringBootTest
class SpringBoot05WebJdbcApplicationTests {

    @Autowired
    DataSource dataSource;

    /**
     * 测试JDBC数据源
     */
    @Test
    void contextLoads() throws Exception{
        System.out.println("------------"+dataSource.getClass()+"------------");

        Connection connection = dataSource.getConnection();

        System.out.println("-------------"+connection+"-----------");
        connection.close();
    }

}

• 使用sql

@Controller
public class controller {

    @Autowired
    JdbcTemplate jdbcTemplate;

    
    @ResponseBody
    @RequestMapping("/list")
    public List<Map<String, Object>> userslist(){
        String sql = "select * from users";
        List<Map<String, Object>> maps = jdbcTemplate.queryForList(sql);
        return maps;
    }

    @ResponseBody
    @GetMapping("/query")
    public Map<String, Object> map() {
        List<Map<String, Object>> list = jdbcTemplate.queryForList("select * FROM user");
        return list.get(0);
    }

}

四、Druid监控

• sql监控
  

• url访问监控
  

其他还想深入可以看看Alibaba Druid v1.0 使用手册

就到这里了\(^o^)/~