SpringBoot 配置Druid监控页面

首先创建druid配置类：用户名、密码需要自行修改。

package org.demo;

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 java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

/****
 * 配置好sruid之后，数据源是从默认的tomcat.pool切换到了druid，
 * 可是druid的属性比如initialSize、minIdle还未生效，
 * 因为在DataSourceProperties.class下没有对应的匹配项，
 * 还需要我们手动配置同时配置监控界面:
 *
 */
public class DruidConfig {
    // 将所有前缀为spring.datasource下的配置项都加载到DataSource中

    @ConfigurationProperties(prefix ="spring.datasource")
    @Bean
    public DruidDataSource druidDataSource() {

        return new DruidDataSource();

    }

    @Bean
    public ServletRegistrationBean druidStatViewServlet() {

        ServletRegistrationBean registrationBean = new ServletRegistrationBean<>(new StatViewServlet(),  "/druid/*");
        registrationBean.addInitParameter("allow", "127.0.0.1");// IP白名单 (没有配置或者为空，则允许所有访问)
        registrationBean.addInitParameter("deny", "");// IP黑名单 (存在共同时，deny优先于allow)
        registrationBean.addInitParameter("loginUsername", "admin");
        registrationBean.addInitParameter("loginPassword", "admin");
        registrationBean.addInitParameter("resetEnable", "false");
        return registrationBean;

    }

    @Bean
    public FilterRegistrationBean druidWebStatFilter() {
        FilterRegistrationBean filterRegistrationBean =new FilterRegistrationBean(new WebStatFilter());
        Map initParams =new HashMap<>();
        initParams.put("exclusions", "*.js,*.css,/druid/*");
        filterRegistrationBean.setInitParameters(initParams);
        filterRegistrationBean.setUrlPatterns(Arrays.asList("/*"));
        return filterRegistrationBean;
    }
}

由于需要验证账户密码，所以需要在application.properties配置原始账户密码：

spring.datasource.druid.stat-view-servlet.login-username=admin
spring.datasource.druid.stat-view-servlet.login-password=admin

起动项目：浏览器输入：http://localhost:6000/druid/login.html  
登录账户密码，可以看到后台界面，操作项目业务之后，查看各项日志记录：