Druid-Disable-Ad

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;

/**
 * Druid 底部广告去除
 */
@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
     */
    @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.replace("*", "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 {
                // default empty logical
            }

            @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();
                // 获取原始common.js
                String text = Utils.readFromResource(filePath);
                // 除去底部的广告信息
                text = text.replace("this.buildFooter();", "// this.buildFooter();");
                // 顶部的超链接禁用点击跳转
                text += "var t= null; $(function(){ t=setInterval(function() {$(\"a.brand\").attr(\"style\", \"pointer-events:none;\")}, 10); setTimeout(function() {clearInterval(t)}, 2000); })";
                response.getWriter().write(text);
            }

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