一、阿里Druid广告的介绍

如果使用的是阿里Druid的数据库连接池,那么会自带一个数据库的监控页面. 但是其页面底部会有阿里的广告,如下图所示,并且在其最下方的作者申明中, 有一个作者的链接,会直接到澳门赌场的页面,这是极其不友好的.因此需要进行去除

二、引入Druid的Starter依赖

对于SpringBoot项目.阿里druid有其专门的druid-spring-boot-starter版本, 我使用的是1.1.13版本

<dependency><groupId>com.alibaba</groupId><artifactId>druid-spring-boot-starter</artifactId><version>1.1.13</version></dependency>

三、编写配置类,进行广告的去除

在SpringBoot项目中编写一个RemoveDruidAdConfig配置类,进行监控页面广告的去除

package com.gblfy.web.core.config;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;/*** @author gblfy* @ClassNme RemoveDruidAdConfig* @Description Druid 底部广告去除* @Date 2019/9/8 8:38* @version1.0*/
@Configuration
@ConditionalOnWebApplication
@AutoConfigureAfter(DruidDataSourceAutoConfigure.class)
@ConditionalOnProperty(name = "spring.datasource.druid.stat-view-servlet.enabled", havingValue = "true", matchIfMissing = true)
public class RemoveDruidAdConfig {/*** 方法名: removeDruidAdFilterRegistrationBean* 方法描述:  除去页面底部的广告** @param properties* @return org.springframework.boot.web.servlet.FilterRegistrationBean* @throws*/@Beanpublic 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() {@Overridepublic void init(FilterConfig filterConfig) throws ServletException {}@Overridepublic 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.jsString text = Utils.readFromResource(filePath);// 正则替换banner, 除去底部的广告信息text = text.replaceAll("<a.*?banner\"></a><br/>", "");text = text.replaceAll("powered.*?shrek.wang</a>", "");response.getWriter().write(text);}@Overridepublic void destroy() {}};FilterRegistrationBean registrationBean = new FilterRegistrationBean();registrationBean.setFilter(filter);registrationBean.addUrlPatterns(commonJsPattern);return registrationBean;}
}

四 、启动项目进行测试

再次启动项目,可以看到其底部的广告信息已经没有了.

五、原理说明

之所以底部有广告,是因为其引入的druid jar包的common.js中的内容

面的这段footer的内容, 就是广告的来源.

var html ='<footer class="footer">'+'    		<div class="container">'+'<a href="https://render.alipay.com/p/s/taobaonpm_click/druid_banner_click" target="new"><img src="https://render.alipay.com/p/s/taobaonpm_click/druid_banner"></a><br/>' +'	powered by <a href="https://github.com/alibaba/" target="_blank">Alibaba</a> & sandzhang & <a href="http://melin.iteye.com/" target="_blank">melin</a> & <a href="https://github.com/shrekwang" target="_blank">shrek.wang</a>'+'			</div>'+' </footer>';

在RemoveDruidAdConfig 配置类中就是使用过滤器过滤common.js的请求，重新处理后用正则替换相关的广告代码片段.