Java 过滤器问题，求高手指点

ekisstherain 2010-08-29 10:51:41

这是过滤器SetLocaleFilter类的源代码：

/**

 * Created on 2010-8-29 上午09:43:17

 */



import java.io.IOException;

import java.util.Locale;

import java.util.ResourceBundle;



import javax.resource.spi.UnavailableException;

import javax.servlet.Filter;

import javax.servlet.FilterChain;

import javax.servlet.FilterConfig;

import javax.servlet.ServletException;

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import javax.servlet.http.HttpSession;



public class SetLocaleFilter implements Filter

{

	private String resourceName = null;



	public void destroy()

	{

		// TODO Auto-generated method stub

		resourceName = null;



	}



	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,

			ServletException

	{

		// TODO Auto-generated method stub

		HttpServletRequest httpReq = (HttpServletRequest) request;

		HttpServletResponse httpResp = (HttpServletResponse) response;



		// 返回客户端首选的 Locale 对象

		Locale locale = httpReq.getLocale();



		// 当 Locale 为null 时，创建对应于英文的 locale 对象

		if (null == locale)

		{

			locale = new Locale("en");

		}



		ResourceBundle bundle = ResourceBundle.getBundle(resourceName, locale);



		HttpSession session = httpReq.getSession();



		// 可以从 session 对象中得到资源包

		session.setAttribute("resource", bundle);



		httpResp.setCharacterEncoding("UTF-8");

		httpResp.setContentType("text/html;charset=UTF-8");



		chain.doFilter(httpReq, httpResp);

	}



	public void init(FilterConfig filterConfig) throws ServletException

	{

		// TODO Auto-generated method stub

		// 获取过滤器的初始化参数，resourceName 参数用于指定资源包系列的基名

		resourceName = filterConfig.getInitParameter("resourceName");

		if (null == resourceName)

		{

			try

			{

				throw new UnavailableException("no define resource");

			} catch (UnavailableException e)

			{

				// TODO Auto-generated catch block

				System.out.println(e.toString());

			}

		}

	}

}




这是web.xml配置过滤器的文件：

	<filter>

		<filter-name>SetLocaleFilter</filter-name>

		<filter-class>SetLocaleFilter</filter-class>

		<init-param>

			<param-name>resourceName</param-name>

			<param-value>MyResource</param-value>

		</init-param>

	</filter>




这是启动Tomcat的出错信息：

信息: Deploying configuration descriptor ch17.xml
2010-8-29 10:42:20 org.apache.catalina.core.StandardContext filterStart
严重: Exception starting filter SetLocaleFilter
java.lang.NoClassDefFoundError: javax/resource/spi/UnavailableException
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
at java.lang.Class.getConstructor0(Class.java:2699)
at java.lang.Class.newInstance0(Class.java:326)
at java.lang.Class.newInstance(Class.java:308)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:275)
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:4001)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4651)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637)
at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:563)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
at org.apache.catalina.core.StandardService.start(StandardService.java:519)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: java.lang.ClassNotFoundException: javax.resource.spi.UnavailableException
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1645)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1491)
... 32 more
2010-8-29 10:42:20 org.apache.catalina.core.StandardContext start
严重: Error filterStart
2010-8-29 10:42:20 org.apache.catalina.core.StandardContext start
严重: Context [/ch17] startup failed due to previous errors


就是说Tomcat加载web.xml 配置文件出错，当我删除 过滤器的相关配置代码时，启动Tomcat没有问题~~
求高手详解~~~~
谢谢啦~~~
...全文
212 12 打赏 收藏 转发到动态 举报
写回复
用AI写文章
12 条回复
切换为时间正序
请发表友善的回复…
发表回复
ekisstherain 2010-08-30
  • 打赏
  • 举报
 回复
[Quote=引用 8 楼 zhoupuyue 的回复:]
你的包名不是filter吗？怎么又是yourPackage,把SetLocaleFilter.class丢到WEB-INF/classes/filter/下。
[/Quote]

大哥阿，谢谢你的提醒，可是这不是问题的关键~~~~~
gudaobeige 2010-08-30
  • 打赏
  • 举报
 回复
找不到文件，jar包有问题，要么就把项目clean
rainsilence 2010-08-30
  • 打赏
  • 举报
 回复
<filter-class>filter.SetLocaleFilter</filter-class>
qinhualee 2010-08-30
  • 打赏
  • 举报
 回复
<filter-class>SetLocaleFilter</filter-class>

这里没有包？你的SetLocaleFilter类放哪里的
ekisstherain 2010-08-29
  • 打赏
  • 举报
 回复
WEB-INF/classes/yourPackage 这个有~~~
bastengao 2010-08-29
  • 打赏
  • 举报
 回复
出现这个问题，就是vm 找不到你的那个类，似乎是你的.class 文件位置没有放对。 应该在 WEB-INF/classes/yourPackage 里。楼主对一对，看对不对。
ekisstherain 2010-08-29
  • 打赏
  • 举报
 回复
修正还是出错：


信息: Deploying configuration descriptor ch17.xml
2010-8-29 11:06:34 org.apache.catalina.core.StandardContext filterStart
严重: Exception starting filter SetLocaleFilter
java.lang.NoClassDefFoundError: javax/resource/spi/UnavailableException
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
at java.lang.Class.getConstructor0(Class.java:2699)
at java.lang.Class.newInstance0(Class.java:326)
at java.lang.Class.newInstance(Class.java:308)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:275)
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:4001)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4651)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637)
at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:563)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
at org.apache.catalina.core.StandardService.start(StandardService.java:519)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: java.lang.ClassNotFoundException: javax.resource.spi.UnavailableException
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1645)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1491)
... 32 more
2010-8-29 11:06:34 org.apache.catalina.core.StandardContext start
严重: Error filterStart
2010-8-29 11:06:34 org.apache.catalina.core.StandardContext start
严重: Context [/ch17] startup failed due to previous errors
ekisstherain 2010-08-29
  • 打赏
  • 举报
 回复
打包啦：
package filter;


Tomcat出错信息:

信息: Deploying configuration descriptor ch17.xml
2010-8-29 11:02:56 org.apache.catalina.core.StandardContext filterStart
严重: Exception starting filter SetLocaleFilter
java.lang.ClassNotFoundException: SetLocaleFilter
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1645)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1491)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:269)
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:4001)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4651)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637)
at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:563)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
at org.apache.catalina.core.StandardService.start(StandardService.java:519)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
2010-8-29 11:02:56 org.apache.catalina.core.StandardContext start
严重: Error filterStart
2010-8-29 11:02:56 org.apache.catalina.core.StandardContext start
严重: Context [/ch17] startup failed due to previous errors
ekisstherain 2010-08-29
  • 打赏
  • 举报
 回复
在默认包中~~~~
阿_布 2010-08-29
  • 打赏
  • 举报
 回复
找不到类，你的SetLocaleFilter类没有包吗？
ekisstherain 2010-08-29
  • 打赏
  • 举报
 回复
不要沉啊~~~~
阿_布 2010-08-29
  • 打赏
  • 举报
 回复
你的包名不是filter吗？怎么又是yourPackage,把SetLocaleFilter.class丢到WEB-INF/classes/filter/下。
java过滤器不管用_我写的过滤器为什么不起作用啊？求高手指点，万分感谢
webcontent目录下的jsp:  page language="java" contentType=... } } web.xml的配置： JavaEETask1 setCE filter.EncodingFilter encoding utf-8 setCE /JavaEETask1/Servlet1 为什么过滤器不起作用啊？？求指点
防sql注入java代码_用java编写防止SQL注入！求java高手指点！问题解决后，一定提高悬赏！...
//他的作用是将请求转发给过滤器链上下一个对象 } public boolean sql_inj(String str) { String[] inj_stra=inj_str.split("\\|"); //split() 方法用于把一个字符串分割成字符串数组 for(int i=0 ; i ; i++ ) { if...
java list排序无效_java List 排序问题
java List 排序问题class User{private Student student;.....}class Student{private String name;private int age;private int score;}假设我有这样一个集合List ， 我想对这个集合按照属性Student的age降序，...
Java函数式编程——Steam
Stream 是 Java8 中处理集合的关键抽象概念，它可以指定你希望对集合进行的操作，可以执行非常复杂的查找、过滤和映射数据等操作。
java中文乱码decode_java中文乱码
我遇到以下问题jsp中采用ajax提交中文信息到action里，在本地运行正常，上传到服务器中不能正确显示，附上部分代码，请高手指点一下谢谢jsp:我遇到以下问题 jsp 中 采用ajax 提交中文信息 到action 里 ，在本地运行...
Web 开发

81,092

社区成员

341,717

社区内容

发帖
与我相关
我的任务
社区描述
Java Web 开发
社区管理员
  • Web 开发社区
加入社区
  • 近7日
  • 近30日
  • 至今

加载中

查看更多榜单
社区公告
暂无公告

试试用AI创作助手写篇文章吧

+ 用AI写文章