Spring Boot配置Druid数据源

创建一个Spring Boot应用，导入相关依赖：

 <!--因为配置中用到log4j进行日志监控而引入此依赖-->
<dependency>
   <groupId>log4j</groupId>
   <artifactId>log4j</artifactId>
   <version>1.2.17</version>
</dependency>

<!--引入Druid数据源-->
<dependency>
   <groupId>com.alibaba</groupId>
   <artifactId>druid</artifactId>
   <version>1.1.10</version>
</dependency>

在application.yml文件中配置dataSource相关属性：注意属性名后的冒号和属性值之间有空格

spring:
  datasource:
    username: root
    password: 1741248769
    url: jdbc:mysql://localhost:3306/mybatis_database
    driver-class-name: com.mysql.jdbc.Driver
    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
    filters: stat,wall ,log4j
    maxPoolPreparedStatementPerConnectionSize: 20
    useGlobalDataSourceStat: true
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500

创建一个配置类：

@Configuration
public class DruidConfig {

    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource druid() {
        return new DruidDataSource();
    }

    //配置管理后台的StatViewServlet
    @Bean
    public ServletRegistrationBean servlet() {
        ServletRegistrationBean servlet = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");
        Map<String, String> params = new HashMap<>();
        //设置管理后台的用户名和密码
        params.put("loginUsername", "pain");
        params.put("loginPassword", "0110");
        servlet.setInitParameters(params);
        return servlet;
    }

    //配置监控的filter
    @Bean
    public FilterRegistrationBean filter() {
        FilterRegistrationBean filter = new FilterRegistrationBean();
        filter.setFilter(new WebStatFilter());
        filter.setUrlPatterns(Arrays.asList("/*"));
        Map<String, String> params = new HashMap<>();
        //不拦截下列请求
        params.put("exclusions", "*.js,*.css,/druid/*");
        filter.setInitParameters(params);
        return filter;
    }

在测试类中测试数据源：

    @Autowired
    DataSource dataSource;

    @Test
    public void testDruid() {
        System.out.println("当前使用的数据源是：" + dataSource);
    }

测试结果：

获取数据源:class com.alibaba.druid.pool.DruidDataSource
获取连接:com.alibaba.druid.proxy.jdbc.ConnectionProxyImpl@44b18fe4

在浏览器中输入http://localhost:8080/druid，使用之前设置的用户名和密码登录管理后台

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Spring Boot配置Druid数据源

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