java编译问题，在线等！！！！

[jie2002]

错误提示：


test.java:7: class HelloServlet is public, should be declared in a file named He
lloServlet.java
public class HelloServlet extends HttpServlet
^
test.java:3: package javax.servlet does not exist
import javax.servlet.*;
^
test.java:4: package javax.servlet.http does not exist
import javax.servlet.http.*;
^
test.java:7: cannot resolve symbol
symbol : class HttpServlet
location: class servlet.HelloServlet
public class HelloServlet extends HttpServlet
^
test.java:9: cannot resolve symbol
symbol : class HttpServletRequest
location: class servlet.HelloServlet
public void doGet(HttpServletRequest request,HttpServletResponse response
)
^
test.java:9: cannot resolve symbol
symbol : class HttpServletResponse
location: class servlet.HelloServlet
public void doGet(HttpServletRequest request,HttpServletResponse response
)
^
test.java:10: cannot resolve symbol
symbol : class ServletException
location: class servlet.HelloServlet
throws ServletException,IOException
^
7 errors

[jie2002]

原代码为：


package servlet;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;

public class HelloServlet extends HttpServlet
{
public void doGet(HttpServletRequest request,HttpServletResponse response)
throws ServletException,IOException
{
PrintWriter out=response.getWriter();
out.println("Hello World!");
}
}

[9731boy]

class HelloServlet is public, should be declared in a file named He
lloServlet.java

最好类名和文件名一样.

package servlet;

import javax.servlet.*;
import javax.servlet.http.*;

:) 包名换一个吧.

[jie2002]

我知道了，还要把SERVLET。JAR考到JDK\jre\lib\ext下

另外我给怎么去访问他呢？
我的WEB。XML为：

<servlet>
<servlet-name>test</servlet-name>
<servlet-class>test</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>test</servlet-name>
<url-pattern>/myservlet</url-pattern>
</servlet-mapping>

用http://192.168.0.169:8080/test
不行啊

[三合一]

servlet.jar放到classpath里去
web.xml

<servlet>
<servlet-name>test</servlet-name>
<servlet-class>HelloServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>test</servlet-name>
<url-pattern>/myservlet</url-pattern>
</servlet-mapping>

用http://192.168.0.169:8080/test

[jie2002]

我知道了
正解是：

<servlet>
<servlet-name>test</servlet-name>
<servlet-class>myservlet.HelloServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>test</servlet-name>
<url-pattern>/myservlet/HelloServlet</url-pattern>
</servlet-mapping>

其中我的文件路径为：

classes
myservlet
HelloServlet.class

myservlet为包名

访问路径为http://192.168.0.169:8080/myservlet/HelloServlet
可以的

TNND，第一次用这个就是麻烦，搞了一下午，现在终于可以了：）
结帐