druid连接池配置监控界面

druid连接池配置监控界面#

引入druid连接池依赖#

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<dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.2.15</version>
        </dependency>

在application.yml配置文件中添加数据库配置#

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spring:
  datasource:
    url: jdbc:mysql://localhost:3306/botou?allowMultiQueries=true&useUnicode=true&characterEncoding=UTF-8&autoReconnect=true&useSSL=false&zeroDateTimeBehavior=convertToNull&serverTimezone=Asia/Shanghai
    username: root
    password: sdhs2020
    #连接池的配置信息
    initialSize: 10
    minIdle: 10
    maxActive: 100
    maxWait: 60000
    timeBetweenEvictionRunsMillis: 60000
    minEvictableIdleTimeMillis: 300000
    validationQuery: SELECT 1 FROM DUAL
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
    poolPreparedStatements: true
    maxPoolPreparedStatementPerConnectionSize: 20
    type: com.alibaba.druid.pool.DruidDataSource
    # 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙
    filters: stat,wall,log4j
    # 通过connectProperties属性来打开mergeSql功能；慢SQL记录
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
    driver-class-name: com.alibaba.druid.proxy.DruidDriver

编写配置类#

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@Configuration
public class DruidConfig {
    //登陆账号
    private final String USERNAME = "sc";
    //登陆密码
    private final String PASSWORD = "12345678";
    @Value("${spring.datasource.url:#{null}}")
    private String dbUrl;
    @Value("${spring.datasource.username: #{null}}")
    private String username;
    @Value("${spring.datasource.password:#{null}}")
    private String password;
    @Value("${spring.datasource.driverClassName:#{null}}")
    private String driverClassName;
    @Value("${spring.datasource.initialSize:#{null}}")
    private Integer initialSize;
    @Value("${spring.datasource.minIdle:#{null}}")
    private Integer minIdle;
    @Value("${spring.datasource.maxActive:#{null}}")
    private Integer maxActive;
    @Value("${spring.datasource.maxWait:#{null}}")
    private Integer maxWait;
    @Value("${spring.datasource.timeBetweenEvictionRunsMillis:#{null}}")
    private Integer timeBetweenEvictionRunsMillis;
    @Value("${spring.datasource.minEvictableIdleTimeMillis:#{null}}")
    private Integer minEvictableIdleTimeMillis;
    @Value("${spring.datasource.validationQuery:#{null}}")
    private String validationQuery;
    @Value("${spring.datasource.testWhileIdle:#{null}}")
    private Boolean testWhileIdle;
    @Value("${spring.datasource.testOnBorrow:#{null}}")
    private Boolean testOnBorrow;
    @Value("${spring.datasource.testOnReturn:#{null}}")
    private Boolean testOnReturn;
    @Value("${spring.datasource.poolPreparedStatements:#{null}}")
    private Boolean poolPreparedStatements;
    @Value("${spring.datasource.maxPoolPreparedStatementPerConnectionSize:#{null}}")
    private Integer maxPoolPreparedStatementPerConnectionSize;
    @Value("${spring.datasource.filters:#{null}}")
    private String filters;
    @Value("{spring.datasource.connectionProperties:#{null}}")
    private String connectionProperties;
    @Bean
    @Primary
    public DruidDataSource dataSource() {
        DruidDataSource datasource = new DruidDataSource();
        datasource.setUrl(this.dbUrl);
        datasource.setUsername(username);
        datasource.setPassword(password);
        datasource.setDriverClassName(driverClassName);
        //configuration
        if (initialSize != null) {
            datasource.setInitialSize(initialSize);
        }
        if (minIdle != null) {
            datasource.setMinIdle(minIdle);
        }
        if (maxActive != null) {
            datasource.setMaxActive(maxActive);
        }
        if (maxWait != null) {
            datasource.setMaxWait(maxWait);
        }
        if (timeBetweenEvictionRunsMillis != null) {
            datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
        }
        if (minEvictableIdleTimeMillis != null) {
      datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
        }
        if (validationQuery != null) {
            datasource.setValidationQuery(validationQuery);
        }
        if (testWhileIdle != null) {
            datasource.setTestWhileIdle(testWhileIdle);
        }
        if (testOnBorrow != null) {
            datasource.setTestOnBorrow(testOnBorrow);
        }
        if (testOnReturn != null) {
            datasource.setTestOnReturn(testOnReturn);
        }
        if (poolPreparedStatements != null) {
            datasource.setPoolPreparedStatements(poolPreparedStatements);
        }
        if (maxPoolPreparedStatementPerConnectionSize != null) {        datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
        }
        if (connectionProperties != null) {
            datasource.setConnectionProperties(connectionProperties);
        }
        List<Filter> filters = new ArrayList<>();
        filters.add(statFilter());
        filters.add(wallFilter());
        datasource.setProxyFilters(filters);
        return datasource;
    }
    @Bean
    public ServletRegistrationBean druidServlet() {
        ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean();
        servletRegistrationBean.setServlet(new StatViewServlet());
        servletRegistrationBean.addUrlMappings("/druid/*");
        Map<String, String> initParameters = new HashMap<>();
        initParameters.put("resetEnable", "false"); //禁用HTML页面上的“Rest All”功能
        //initParameters.put("allow", "10.8.9.115");  //ip白名单（没有配置或者为空，则允许所有访问）
        initParameters.put("loginUsername", USERNAME);  //++监控页面登录用户名
        initParameters.put("loginPassword", PASSWORD);  //++监控页面登录用户密码
        //initParameters.put("deny", ""); //ip黑名单
        //如果某个ip同时存在，deny优先于allow
        servletRegistrationBean.setInitParameters(initParameters);
        return servletRegistrationBean;
    }
    @Bean
    public StatFilter statFilter() {
        StatFilter statFilter = new StatFilter();
        statFilter.setLogSlowSql(true);
        statFilter.setMergeSql(true);
        statFilter.setSlowSqlMillis(3000);
        return statFilter;
    }
    @Bean
    public WallFilter wallFilter() {
        WallFilter wallFilter = new WallFilter();
        //允许执行多条SQL
        WallConfig config = new WallConfig();
        config.setMultiStatementAllow(true);
        wallFilter.setConfig(config);
        return wallFilter;
    }
}