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目前 druid-1.1.14 的 web 控制台依然存在阿里云的广告，本文通过过滤器将广告文本拦截。
定位问题
产生广告的 JS 文件在 druid-1.1.14.jar/support/http/resources/js/common.js。
查看源码可知是 buildFooter 方法进行植入，由 init 方法调用。
解决问题
/**
* Druid 的配置类
*
* @author BBF
*/
@Configuration
@AutoConfigureAfter(DruidDataSourceAutoConfigure.class)
public class DruidConfig {
/**
* 带有广告的 common.js 全路径，druid-1.1.14
*/
private static final String FILE_PATH = “support/http/resources/js/common.js”;
/**
* 原始脚本，触发构建广告的语句
*/
private static final String ORIGIN_JS = “this.buildFooter();”;
/**
* 替换后的脚本
*/
private static final String NEW_JS = “//this.buildFooter();”;
/**
* 去除 Druid 监控页面的广告
*
* @param properties DruidStatProperties 属性集合
* @return {@link org.springframework.boot.web.servlet.FilterRegistrationBean}
*/
@Bean
@ConditionalOnWebApplication
@ConditionalOnProperty(name = “spring.datasource.druid.stat-view-servlet.enabled”, havingValue = “true”)
public FilterRegistrationBean<RemoveAdFilter> removeDruidAdFilter(
DruidStatProperties properties) throws IOException {
// 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”);
// 获取 common.js
String text = Utils.readFromResource(FILE_PATH);
// 屏蔽 this.buildFooter(); 不构建广告
final String newJs = text.replace(ORIGIN_JS, NEW_JS);
FilterRegistrationBean<RemoveAdFilter> registration = new FilterRegistrationBean<>();
registration.setFilter(new RemoveAdFilter(newJs));
registration.addUrlPatterns(commonJsPattern);
return registration;
}
/**
* 删除 druid 的广告过滤器
*
* @author BBF
*/
private class RemoveAdFilter implements Filter {
private final String newJs;
public RemoveAdFilter(String newJS) {
this.newJs = newJS;
}
@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();
response.getWriter().write(newJs);
}
}
}
