我的CLASSPATH是这样设置的:
.;C:\j2sdk1.4.2_07\lib;C:\j2sdk1.4.2_07\lib\dt.jar;C:\j2sdk1.4.2_07\lib\tools.jar;C:\Tomcat\common\lib\servlet.jar;C:\Tomcat\common\lib\servlet-api.jar;C:\Tomcat\common\lib\struts.jar
好象servlet.jar,servlet-api.jar;struts.jar都加入近来了啊?
.;C:\j2sdk1.4.2_07\lib;C:\j2sdk1.4.2_07\lib\dt.jar;C:\j2sdk1.4.2_07\lib\tools.jar;C:\Tomcat\common\lib\servlet.jar;C:\Tomcat\common\lib\servlet-api.jar;C:\Tomcat\common\lib\struts.jar
好象servlet.jar,servlet-api.jar;struts.jar都加入近来了啊?
解决方案 »
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HelloForm.java:2: package javax.servlet.http does not exist
import javax.servlet.http.*;
HelloForm.java:3: package org.apache.struts.action does not exist
import org.apache.struts.action.*;
^
HelloForm.java:4: cannot resolve symbol
symbol : class ActionForm
location: class hello.HelloForm
public final class HelloForm extends ActionForm
^
HelloForm.java:15: cannot resolve symbol
symbol : class ActionMapping
location: class hello.HelloForm
public void reset(ActionMapping mapping,HttpServletRequest request)
^
HelloForm.java:15: cannot resolve symbol
symbol : class HttpServletRequest
location: class hello.HelloForm
public void reset(ActionMapping mapping,HttpServletRequest request)
^
HelloForm.java:19: cannot resolve symbol
symbol : class ActionMapping
location: class hello.HelloForm
public ActionErrors validate(ActionMapping mapping,HttpServletRequest re
quest)
^
HelloForm.java:19: cannot resolve symbol
symbol : class HttpServletRequest
location: class hello.HelloForm
public ActionErrors validate(ActionMapping mapping,HttpServletRequest re
quest)
^
HelloForm.java:19: cannot resolve symbol
symbol : class ActionErrors
location: class hello.HelloForm
public ActionErrors validate(ActionMapping mapping,HttpServletRequest re
quest)
^
HelloForm.java:21: cannot resolve symbol
symbol : class ActionErrors
location: class hello.HelloForm
ActionErrors eroors = new ActionErrors();
^
HelloForm.java:21: cannot resolve symbol
symbol : class ActionErrors
location: class hello.HelloForm
ActionErrors eroors = new ActionErrors();
^
HelloForm.java:24: cannot resolve symbol
symbol : class ActionMessage
location: class hello.HelloForm
errors.add("username",new ActionMessage("hello.no.username.er
ror"));
^
HelloForm.java:24: cannot resolve symbol
symbol : variable errors
location: class hello.HelloForm
errors.add("username",new ActionMessage("hello.no.username.er
ror"));
^
HelloForm.java:26: cannot resolve symbol
symbol : variable errors
location: class hello.HelloForm
return errors;
^
13 errors
问题看起来很大,但是所有的代码我都是按照书上面说的写的一个例子啊
怎么会这么多的错误,但是编译PersonBean.java没有任何问题,代码如下:
package hello;
public class PersonBean
{
private String userName = null;
public String getUserName()
{
return (this.userName);
}
public void setUserName(String userName)
{
this.userName=userName;
}
public void saveToPersistentStore()
{}
}
还有编译HelloAction.java也出现同样的问题,代码如下:
package hello;
import javax.servlet.*
import javax.servlet.http.*;
import org.apache.struts.action.*;
import org.apache.struts.util.*;
public final class HelloAction extends Action
{
public ActionForward execute(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception
{
MessageResources messages = getResources(request);
ActionMessages errors = new ActionMessages();
String userName = (String)((HelloForm)form).getUserName();
String badUserName = "Monster";
if(userName.equalsIgnoreCase(badUserName))
{
errors.add("username",new ActionMessage("hello.dont.talk.to.monster",
badUserName));
saveErrors(request,errors);
return(new ActionForward(mapping.getInput()));
}
PersonBean pb = new PersonBean();
pb.setUserName(userName);
pb.saveToPersistentStore();
request.setAttribute(Constants.PERSON_KEY,pb);
return (mapping.findForward("SayHello"));
}
}
问题::package javax.servlet.http does not exist
编译器与WEB服务器的JDK版本不同。
我的web服务器是tomcat5.0.28,编译器是指什么我就不知道了,请指教。