JFinal中使用druid监控的问题? 400 报错
参考了:http://www.oschina.net/question/727605_71999
1、采用修改web.xml的方式,可以正常使用。
2.采用这种方式,出错
public void configHandler(Handlers me) { DruidStatViewHandler dvh = new DruidStatViewHandler("/druid"); me.add(dvh); }
出错信息如下:
HTTP ERROR 500 Problem accessing /druid/index.html. Reason: com/alibaba/druid/util/IOUtils Caused by: java.lang.NoClassDefFoundError: com/alibaba/druid/util/IOUtils at com.jfinal.plugin.druid.DruidStatViewHandler$JFinalStatViewServlet.returnResourceFile(DruidStatViewHandler.java:172) at com.jfinal.plugin.druid.DruidStatViewHandler$JFinalStatViewServlet.service(DruidStatViewHandler.java:156) at com.jfinal.plugin.druid.DruidStatViewHandler.handle(DruidStatViewHandler.java:68) at name.liumin.ft.handler.HtmlExtensionHandler.handle(HtmlExtensionHandler.java:15) at com.jfinal.core.JFinalFilter.doFilter(JFinalFilter.java:72) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1307) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:453) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:560) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1072) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:382) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1006) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116) at org.eclipse.jetty.server.Server.handle(Server.java:365) at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:485) at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:926) at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:988) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:635) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235) at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543) at java.lang.Thread.run(Thread.java:680) Caused by: java.lang.ClassNotFoundException: com.alibaba.druid.util.IOUtils at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) at org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:430) at org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:383) ... 28 more Caused by: java.lang.ClassNotFoundException: com.alibaba.druid.util.IOUtils at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) at org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:430) at org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:383) at com.jfinal.plugin.druid.DruidStatViewHandler$JFinalStatViewServlet.returnResourceFile(DruidStatViewHandler.java:172) at com.jfinal.plugin.druid.DruidStatViewHandler$JFinalStatViewServlet.service(DruidStatViewHandler.java:156) at com.jfinal.plugin.druid.DruidStatViewHandler.handle(DruidStatViewHandler.java:68) at name.liumin.ft.handler.HtmlExtensionHandler.handle(HtmlExtensionHandler.java:15) at com.jfinal.core.JFinalFilter.doFilter(JFinalFilter.java:72) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1307) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:453) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:560) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1072) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:382) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1006) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116) at org.eclipse.jetty.server.Server.handle(Server.java:365) at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:485) at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:926) at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:988) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:635) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235) at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543) at java.lang.Thread.run(Thread.java:680) Powered by Jetty://什么情况呢?
使用 jfinal lib 包中的 druid.jar 就可以######
如果用了新版jar,那就自己再新建一个类,内容如下
package com.alibaba.druid.util; public class IOUtils extends Utils{ }
######解决问题!######没加入druid包?######
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