pagehelper分页插件报错

最新推荐文章于 2025-01-17 15:29:16 发布

转载最新推荐文章于 2025-01-17 15:29:16 发布 · 910 阅读

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博客主要讲述了pagehelper分页插件报错问题。最初报错‘com.github.pagehelper.Page’是未知类，原因是web端未引入pagehelper依赖；引入后又报java.lang.NoClassDefFoundError，原因是缺少mybatis依赖。最终解决方案是同时引入pagehelper和mybatis依赖。

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pagehelper分页插件报错

‘com.github.pagehelper.Page’ is an unknown class in WebappClassLoader

警告: Hessian/Burlap: ‘com.github.pagehelper.Page’ is an unknown class in WebappClassLoader
context:
delegate: false
repositories:
----------> Parent Classloader:
ClassRealm[plugin>org.apache.tomcat.maven:tomcat7-maven-plugin:2.2, parent: sun.misc.Launcher$AppClassLoader@4e25154f]
:
java.lang.ClassNotFoundException: com.github.pagehelper.Page

报错原因

web端没有引入pagehelper依赖

<dependency>
	<groupId>com.github.pagehelper</groupId>
	<artifactId>pagehelper</artifactId>
</dependency>

引入依赖后，又报错java.lang.NoClassDefFoundError: org/apache/ibatis/session/RowBounds

严重: Servlet.service() for servlet [xx-xx-web] in context with path [] threw exception [Request processing failed; nested exception is com.alibaba.dubbo.rpc.RpcException: Failed to invoke the method getItemList in the service com.taotao.service.ItemService. Tried 3 times of the providers [192.168.170.1:20880] (1/1) from the registry 127.0.0.1:2181 on the consumer 192.168.170.1 using the dubbo version 2.5.3. Last error is: Failed to invoke remote method: getItemList, provider: dubbo://192.168.170.1:20880/com.taotao.service.ItemService?anyhost=true&application=taotao-manager-web&check=false&dubbo=2.5.3&interface=com.taotao.service.ItemService&methods=addItem,getItemList,getItemById&pid=12236&revision=0.0.1-SNAPSHOT&side=consumer&timeout=300000&timestamp=1558576471460, cause: java.lang.NoClassDefFoundError: org/apache/ibatis/session/RowBounds
java.lang.NoClassDefFoundError: org/apache/ibatis/session/RowBounds
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)
at java.lang.Class.getConstructor0(Class.java:3075)
at java.lang.Class.newInstance(Class.java:412)
at com.alibaba.com.caucho.hessian.io.CollectionDeserializer.createList(CollectionDeserializer.java:107)
at com.alibaba.com.caucho.hessian.io.CollectionDeserializer.readLengthList(CollectionDeserializer.java:88)
at com.alibaba.com.caucho.hessian.io.Hessian2Input.readObject(Hessian2Input.java:1628)
at com.alibaba.com.caucho.hessian.io.JavaDeserializerInternalDecoder.messageReceived(NettyCodecAdapter.java:134)
at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559)
at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:268)
at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:255)
at org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:88)
at org.jboss.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:109)
at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:312)
at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:90)
at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178)
at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
at org.jboss.netty.util.internal.DeadLockProofWorker $1 . r u n (D e a d L o c k P r o o f W o r k e r . j a v a : 42) a t j a v a . u t i l . c o n c u r r e n t . T h r e a d P o o l E x e c u t o r . r u n W o r k e r (T h r e a d P o o l E x e c u t o r . j a v a : 1149) a t j a v a . u t i l . c o n c u r r e n t . T h r e a d P o o l E x e c u t o r$ Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: org.apache.ibatis.session.RowBounds
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1702)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547)
… 37 more
] with root cause

新报错原因

缺少mybatis依赖

<dependency>
	 <groupId>org.mybatis</groupId>
	<artifactId>mybatis</artifactId>
</dependency>

重新引入依赖不报错了

最终解决方案

同时引入pagehelper和mybatis依赖


		<dependency>
			<groupId>com.github.pagehelper</groupId>
			<artifactId>pagehelper</artifactId>
		</dependency>
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
		</dependency>

有不对的请大家指出！