为什么我不能编译我的servlet?

[zhanghw]

C:\jswdk-1.0.1\examples\WEB-INF\servlets\MyHellow
import java.io.*;
import java.servlet.*;
import javax.servlet.*;

public class MyHellow extends HttpServlet {
public void doget(HttpServletRequest rq,HttpServletResponse rs)
throws IOException,ServletException
{
rs.setContentType("text/html");
PrintWriter out=rs.getWriter();
out.println("hellow");
}
}

javac MyHellow.java
MyHellow.java:2: 包 java.servlet 不存在
import java.servlet.*;
^
MyHellow.java:5: 不能解析符号
符号：类 HttpServlet
位置：类 in MyHellow
public class MyHellow extends HttpServlet {
^
MyHellow.java:6: 不能解析符号
符号：类 HttpServletRequest
位置：类 in MyHellow
public void doget(HttpServletRequest rq,HttpServletResponse rs)
^
MyHellow.java:6: 不能解析符号
符号：类 HttpServletResponse
位置：类 in MyHellow
public void doget(HttpServletRequest rq,HttpServletResponse rs)
^
4 个错误

[zhanghw]

哎，我到sun的论坛去找了一上午，也有很多人问类似的问题，但是我没有找到能解决问题的答案，sun到底怎么回事？ document做的这么差劲？

难道真的没人用过jswdk吗？ 还有我在win98的dos窗口下运行 jar -t servlet.jar,可是一点响应都没有，好奇怪。

还是php 用起来舒服听话，doc也好查

[lmy2000]

还有一个问题：import java.servlet.*根本就是错误！没有java.servlet.*,把它注释掉。
在试试！

[muqiao]

只要将servlet.jar拷贝到jdk1.3/jre/lib/ext/目录下即可

[skyyoung]

把\jswdk\lib下的jar放到classpath里
http://www.csdn.net/expert/topic/85/85391.shtm

[zhanghw]

还是都不行

我的classpath设置如下：
SET PATH=%PATH%;C:\JDK1.3\BIN;E:\ULTRAE~1

SET CLASSPATH=c:\jdk1.3\lib\tools.jar;c:\jdk1.3\lib\dt.jar;.;c:\jswdk-1.0.1\webserver.jar;c:\jswdk-1.0.1\lib\servlet.jar;c:\jswdk-1.0.1\lib\jspengine.jar;c:\jswdk-1.0.1\lib\xml.jar;

set JAVA_HOME=c:\jdk1.3

[muqiao]

我觉得classpath并不需要去甚至的，而jdk1.4\bin也应该写在path的最前面

[zhanghw]

还是不行，而且在jswdk的范例程序中也有这么一句的，还有我这里共有3个servlet.jar

C:\jakarta-servletapi-4.0-b3\lib\servlet.jar 73.2k
C:\jswdk-1.0.1\lib\servlet.jar 24.7k
C:\jsdk2.1\servlet.jar 20.7k

嘻嘻，该用哪一个呀？ 我好想 jar -t servlet.jar ;可是 windows 让我等待，如果有一个期限，那就是 10K years .......

help

[zhanghw]

oh，jswdk 和我开了一个大玩笑，我通过ie看到的HelloWorldExample的code中是
import java.io.*;
import java.servlet.*;
import javax.servlet.*;
......

在HelloWorldExample.java中看到的是
import java.io.*;
import java.text.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
......

oh，妈妈呀，我被人骗了

[zhanghw]

run "jar tf servlet.jar" the result is as following:
"
META-INF/MANIFEST.MF
javax/servlet/LocalStrings.properties
javax/servlet/http/LocalStrings.properties
javax/servlet/http/HttpServlet.class
javax/servlet/http/NoBodyResponse.class
javax/servlet/http/NoBodyOutputStream.class
javax/servlet/http/Cookie.class
javax/servlet/http/HttpSessionBindingEvent.class
javax/servlet/http/HttpServletRequest.class
javax/servlet/http/HttpServletResponse.class
javax/servlet/http/HttpSession.class
javax/servlet/http/HttpSessionBindingListener.class
javax/servlet/http/HttpSessionContext.class
javax/servlet/http/HttpUtils.class
javax/servlet/GenericServlet.class
javax/servlet/ServletInputStream.class
javax/servlet/RequestDispatcher.class
javax/servlet/Servlet.class
javax/servlet/ServletConfig.class
javax/servlet/ServletContext.class
javax/servlet/ServletException.class
javax/servlet/jsp/HttpJspPage.class
javax/servlet/jsp/JspEngineInfo.class
javax/servlet/jsp/JspFactory.class
javax/servlet/jsp/JspPage.class
javax/servlet/jsp/JspWriter.class
javax/servlet/jsp/PageContext.class
javax/servlet/ServletOutputStream.class
javax/servlet/ServletRequest.class
javax/servlet/ServletResponse.class
javax/servlet/SingleThreadModel.class
javax/servlet/UnavailableException.class