(bugfix)[整体](Druid错误discard long time none received connection)

src/main/java/com/laker/admin/config/DruidConfig.java

@@ -18,11 +18,13 @@ import org.springframework.boot.web.servlet.ServletRegistrationBean;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
+import javax.annotation.PostConstruct;
 import javax.servlet.*;
 import java.io.IOException;
 
 /**
  * durid 监控页面配置 默认地址 localhost:8080/druid/login.html
+ *
  * @author laker
  */
 @Configuration
@@ -30,6 +32,14 @@ import java.io.IOException;
 public class DruidConfig {
     private static final String DEFAULT_ALLOW_IP = "127.0.0.1";
 
+    /**
+     * 解决druid 日志报错：discard long time none received connection:xxx
+     */
+    @PostConstruct
+    public void setUsePingMethod() {
+        System.setProperty("druid.mysql.usePingMethod", "false");
+    }
+
     /**
      * 参见：DruidStatViewServletConfiguration
      * 黑白名单
@@ -135,13 +145,13 @@ public class DruidConfig {
 
     /**
      * 去除底部广告
+     *
      * @param properties
      * @return
      */
     @Bean
     @ConditionalOnProperty(name = "spring.datasource.druid.statViewServlet.enabled", havingValue = "true", matchIfMissing = true)
-    public FilterRegistrationBean removeDruidFilterRegistrationBean(DruidStatProperties properties)
-    {
+    public FilterRegistrationBean removeDruidFilterRegistrationBean(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
@@ -149,16 +159,14 @@ public class DruidConfig {
         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()
-        {
+        Filter filter = new Filter() {
             @Override
-            public void init(javax.servlet.FilterConfig filterConfig) throws ServletException
-            {
+            public void init(javax.servlet.FilterConfig filterConfig) throws ServletException {
             }
+
             @Override
             public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
-                    throws IOException, ServletException
-            {
+                    throws IOException, ServletException {
                 chain.doFilter(request, response);
                 // 重置缓冲区，响应头不会被重置
                 response.resetBuffer();
@@ -169,9 +177,9 @@ public class DruidConfig {
                 text = text.replaceAll("powered.*?shrek.wang</a>", "");
                 response.getWriter().write(text);
             }
+
             @Override
-            public void destroy()
-            {
+            public void destroy() {
             }
         };
         FilterRegistrationBean registrationBean = new FilterRegistrationBean();

src/main/resources/application.yaml

@@ -12,8 +12,8 @@ spring:
     driver-class-name: com.mysql.cj.jdbc.Driver
     druid:
       initial-size: 1
-      min-idle: 20
-      max-active: 300
+      min-idle: 5
+      max-active: 20
       test-on-borrow: true
       validation-query: select 1
   profiles: