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使用idea14.1.4创建maven多项目工程搭建jfinal框架报错

2015-09-17 23:49 1046 查看

使用idea14.1.4创建maven多项目工程搭建jfinal框架报错。

项目工程目录如下：

DemoConfig.class如下：

package com.lp.demo;

import com.jfinal.config.*;

/**
* Created by Lenovo on 2015/9/10.
*/

class DemoConfig extends JFinalConfig {
@Override
public void configConstant(Constants constants) {
constants.setDevMode(true);
}

@Override
public void configRoute(Routes routes) {
routes.add("/hello", HelloController.class);
}

@Override
public void configPlugin(Plugins plugins) {

}

@Override
public void configInterceptor(Interceptors interceptors) {

}

@Override
public void configHandler(Handlers handlers) {

}
}

HelloController.class如下：

package com.lp.demo;

import com.jfinal.core.Controller;

/**
* Created by Lenovo on 2015/9/10.
*/
class HelloController extends Controller {
public void index(){
renderText("Hello Jfinal World!!!");

}
}

web.xml配置：

<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
<display-name>Archetype Created Web Application</display-name>
<!--jfinal配置过滤器-->

<filter>
<filter-name>jfinal</filter-name>
<filter-class>com.jfinal.core.JFinalFilter</filter-class>
<init-param>
<param-name>configClass</param-name>
<param-value>com.lp.demo.DemoConfig</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>jfinal</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>

报错信息如下：

九月 17, 2015 11:20:52 下午 org.apache.catalina.core.StandardContext filterStart

严重: Exception starting filter jfinal

java.lang.RuntimeException: Can not create instance of class: com.lp.demo.DemoConfig

at com.jfinal.core.JFinalFilter.createJFinalConfig(JFinalFilter.java:98)
at com.jfinal.core.JFinalFilter.init(JFinalFilter.java:47)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4038)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4692)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:799)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:779)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1389)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:297)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:631)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:568)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:295)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1471)
at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76)
at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1312)
at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1404)
at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:832)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:323)
at sun.rmi.transport.Transport$1.run(Transport.java:200)
at sun.rmi.transport.Transport$1.run(Transport.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$256(TCPTransport.java:683)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

Caused by: java.lang.IllegalAccessException: Class com.jfinal.core.JFinalFilter can not access a member of class com.lp.demo.DemoConfig with modifiers ""
at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:102)
at java.lang.Class.newInstance(Class.java:436)
at com.jfinal.core.JFinalFilter.createJFinalConfig(JFinalFilter.java:96)
... 48 more

九月 17, 2015 11:20:54 下午 org.apache.catalina.core.StandardContext filterStart

严重: Exception starting filter jfinal

java.lang.RuntimeException: Can not create instance of class: com.lp.demo.DemoConfig

Caused by: java.lang.IllegalAccessException: Class com.jfinal.core.JFinalFilter can not access a member of class com.lp.demo.DemoConfig with modifiers ""

at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:102)
at java.lang.Class.newInstance(Class.java:436)
at com.jfinal.core.JFinalFilter.createJFinalConfig(JFinalFilter.java:96)
... 48 more

解决方案：

1、根据报错信息

java.lang.RuntimeException: Can not create instance of class: com.lp.demo.DemoConfig

查看web.xml中

<param-value>com.lp.demo.DemoConfig</param-value>

的类路径是否正确。如果不正确请改正。

2、根据报错信息

Caused by: java.lang.IllegalAccessException: Class com.jfinal.core.JFinalFilter can not access a member of class com.lp.demo.DemoConfig with modifiers ""

查看类com.lp.demo.DemoConfig.class中的定义，是不是在类的声明出没有加上public，如果没有的话请加上。

改完之后，再运行一次，我的问题解决了。希望能够对大家有所帮助。

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标签： jfinal搭建报错 jfinal maven idea

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