怎样编译和运行servlet?
我分五个步骤进行编译和运行servlet:
第一,环境配置:我使用的jsp环境是j2sdk1.4.0_01+Tomcat 4.1.
第二,编译servlet程序:编译servlet程序需要把C:\Tomcat 4.1\common\lib\servlet.jar文件复制到C:\j2sdk1.4.0_01\jre\lib\ext目录下,否则会发生编译错误.
第三，配置web.xml文件
在web.xml文件中加入下列描述代码:
<servlet>
<servlet-name>HelloJsp</servlet-name>
<servlet-class>HelloJsp</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloJsp</servlet-name>
<url-pattern>/servlet/HelloJsp</url-pattern>
</servlet-mapping>
第四,把编译好的class文件放在WEB-INF\classes包内或指定的目录下.
第五,运行.
事例代码:
HelloJsp.java
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class HelloJsp extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException
{
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head>");
out.println("<title>Hello Jsp!</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Hello Jsp!</h1>");
out.println("</body>");
out.println("</html>");
}
}
按上数步骤,最后在浏览器中输入: http://localhost:8080/servlet/HelloJsp
如果出现Hello Jsp!的字样就ok了!
lunzi
2005-06-21 03:04:39
评论:4
阅读:4616
引用:0
换一方式实现
@2008-04-15 17:14:56 lunzi
可以用MyEclipse建servlet测试类，它会自动帮你配置好，然后按web.xml中的配置访问即可。
@2008-04-08 22:54:00 游客
我也和楼上的这位朋友一样，前四步照样做了，但就是第五步运行不了，郁闷了好久 啦！
@2007-07-19 08:29:06 lunzi
加入您的web包叫test，
应该是： http://localhost:8080/test/servlet/HelloJsp访问
如果还不行，你把HelloJsp.java放在包里面，如：
package test;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class HelloJsp extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException
{
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head>");
out.println("<title>Hello Jsp!</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Hello Jsp!</h1>");
out.println("</body>");
out.println("</html>");
}
}
servlet布置改为:
<servlet>
<servlet-name>HelloJsp</servlet-name>
<servlet-class>test.HelloJsp</servlet-class>
</servlet>
应该是： http://localhost:8080/test/servlet/HelloJsp访问
如果还不行，你把HelloJsp.java放在包里面，如：
package test;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class HelloJsp extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException
{
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head>");
out.println("<title>Hello Jsp!</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Hello Jsp!</h1>");
out.println("</body>");
out.println("</html>");
}
}
servlet布置改为:
<servlet>
<servlet-name>HelloJsp</servlet-name>
<servlet-class>test.HelloJsp</servlet-class>
</servlet>
为何运行不了HelloJsp
@2007-07-18 18:38:40 生活
(我的QQ：549466875)
你好：
前四步都按照你的要求做了，可是第五步却运行不了，奇怪！
界面如下：
HTTP Status 404 - Servlet HelloJsp is not available
--------------------------------------------------------------------------------
type Status report
message Servlet HelloJsp is not available
description The requested resource (Servlet HelloJsp is not available) is not available.
--------------------------------------------------------------------------------
Apache Tomcat/6.0.10
你好：
前四步都按照你的要求做了，可是第五步却运行不了，奇怪！
界面如下：
HTTP Status 404 - Servlet HelloJsp is not available
--------------------------------------------------------------------------------
type Status report
message Servlet HelloJsp is not available
description The requested resource (Servlet HelloJsp is not available) is not available.
--------------------------------------------------------------------------------
Apache Tomcat/6.0.10