【SpringBoot】五十七、SpringBoot去掉Druid监控页底部广告

关于在 SpringBoot 中整合 Druid 的教程在上一篇文章，【SpringBoot】五十五、SpringBoot整合Druid数据库连接池

默认 Druid 的监控页面底部会有一块儿广告位，如图：

我们如果不想显示这一块的话，可以对其进行过滤掉，具体配置如下：

import com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceAutoConfigure;
import com.alibaba.druid.spring.boot.autoconfigure.properties.DruidStatProperties;
import com.alibaba.druid.util.Utils;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.servlet.*;
import java.io.IOException;


@Configuration
@ConditionalOnWebApplication
@AutoConfigureAfter(DruidDataSourceAutoConfigure.class)
@ConditionalOnProperty(name = "spring.datasource.druid.stat-view-servlet.enabled", havingValue = "true", matchIfMissing = true)
public class DruidConfigurer {

    
    @SuppressWarnings({"rawtypes", "unchecked"})
    @Bean
    public FilterRegistrationBean removeDruidAdFilterRegistrationBean(DruidStatProperties properties) {
        // 获取web监控页面的参数
        DruidStatProperties.StatViewServlet config = properties.getStatViewServlet();
        // 提取common.js的配置路径
        String pattern = config.getUrlPattern() != null ? config.getUrlPattern() : "/druid/*";
        String commonJsPattern = pattern.replaceAll("\*", "js/common.js");

        final String filePath = "support/http/resources/js/common.js";

        // 创建filter进行过滤
        Filter filter = new Filter() {
            @Override
            public void init(FilterConfig filterConfig) throws ServletException {
            }

            @Override
            public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
                    throws IOException, ServletException {
                chain.doFilter(request, response);
                // 重置缓冲区，响应头不会被重置
                response.resetBuffer();
                // 获取common.js
                String text = Utils.readFromResource(filePath);
                // 正则替换banner, 除去底部的广告信息
                text = text.replaceAll("
", "");
                text = text.replaceAll("powered.*?shrek.wang", "");
                response.getWriter().write(text);
            }

            @Override
            public void destroy() {
            }
        };
        FilterRegistrationBean registrationBean = new FilterRegistrationBean();
        registrationBean.setFilter(filter);
        registrationBean.addUrlPatterns(commonJsPattern);
        return registrationBean;
    }
}

@ConditionalOnWebApplication，当Spring为web服务时，才使注解的类生效@AutoConfigureAfter，在加载配置的类之后再加载当前类@ConditionalOnProperty 注解，可以根据具体的值来控制该配置是否生效

去除广告之后的效果如下：

如您在阅读中发现不足，欢迎留言！！！