SpringBoot2使用Druid開啓監控

SpringBoot2 使用 Druid的數據庫連接池並使用監控

首先引入pom文件

<dependencies>
        <!--引入自定義的數據源-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.9</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

配置Application.yml文件

spring:
  datasource:
    username: root
    password: 123456
    url: jdbc:mysql://127.0.0.1:3306/jdbc?useUnicode=true&characterEncoding=utf-8&useSSL=true
    driver-class-name: com.mysql.jdbc.Driver
    type: com.alibaba.druid.pool.DruidDataSource

    # 配置Druid的其他參數，以下配置必須增加一個配置文件纔能有效
    # 初始化大小，最小，最大
    initialSize: 5
    minIdle: 5
    maxActive: 20
    # 獲取連接等待超時的時間
    maxWait: 60000
    # 配置間隔多久才進行一次檢測，檢測需要關閉的空閒連接，單位是毫秒
    timeBetweenEvictionRunsMillis: 60000
    # 配置一個連接在池中最小生存的時間，單位是毫秒
    minEvictableIdleTimeMillis: 300000
    validationQuery: SELECT 1 FROM DUAL
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
    poolPreparedStatements: true
    # 配置監控統計攔截的filters，去掉後監控界面sql無法統計，'wall'用於防火牆
    filters: stat, wall
    # 打開PSCache，並且指定每個連接上PSCache的大小
    maxPoolPreparedStatementPerConnectionSize: 20
    # 通過connectProperties屬性來打開mergeSql功能；慢SQL記錄
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500
    # 合併多個DruidDataSource的監控數據
    useGlobalDataSourceStat: true

配置Druid的數據庫連接池,並切添加到bean中,配置filter和Servlet

@Configuration
public class DruidConfig {
    /**
     * @function 添加
     * @return
     */
    @Bean
    @ConfigurationProperties(prefix = "spring.datasource")
    public DataSource druid(){
        return new DruidDataSource();
    }

    //配置Druid的監控
    //1、配置一個管理後臺的Servlet
    @Bean
    public ServletRegistrationBean statViewServlet(){
        ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");
        Map<String,String> initParams = new HashMap<>();
        initParams.put("loginUsername","admin");
        initParams.put("loginPassword","123456");
        initParams.put("allow","");//默認就是允許所有訪問
        initParams.put("deny","192.168.15.21");
        bean.setInitParameters(initParams);
        return bean;
    }

    //2、配置一個web監控的filter
    @Bean
    public FilterRegistrationBean webStatFilter(){
        FilterRegistrationBean bean = new FilterRegistrationBean();
        bean.setFilter(new WebStatFilter());
        Map<String,String> initParams = new HashMap<>();
        initParams.put("exclusions","*.js,*.css,/druid/*");
        bean.setInitParameters(initParams);
        bean.setUrlPatterns(Arrays.asList("/*"));
        return  bean;
    }
}

添加控制器

@Controller
public class HelloController {

    @Autowired
    JdbcTemplate template;

    @GetMapping("/query")
    @ResponseBody
    public List<Map<String, Object>> map(){
        List<Map<String, Object>> list = template.queryForList("select * from department");
        return list;
    }

}

按我這樣配置是有sql語句的監控顯示的,網上有好多配置是無法實現sql語句監控的,有點坑!