please enter a:<input type="text" name="a"> please enter b:<input type="text" name="b"> <input type="submit" onclick="vldText_num()" > </form> </body>] //servlet [code=Java] [package com.number.servlet;import java.io.IOException; import java.io.PrintWriter;import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class Number extends HttpServlet{ public void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException,IOException { int a = Integer.valueOf(request.getParameter("a")); int b = Integer.valueOf(request.getParameter("b")); int d = a<b?a:b;
PrintWriter out = response.getWriter(); out.print(d) ;
System.out.println("Hello World");那么简单.
就去现在些 好的J2EE的视屏来看 自己开始去模仿写些程序
对于基础还可以的 就自己去下载些源码 读哈
这样肯定有帮助
必须先学好j2se.
在sun网站上download一个tomcat服务器和ecilpse开发工具
你就可以做一些简单的试验了,例如用户的登陆和验证。
servlet的话肯定要用ide ,一个.号就可以解决很多问题
我的资源里有本myeclipse教程,介绍的很详细,配有大量图片、源码说明
既可以用来做学习的教程书,又可以用来做工作的参考书
有需要的朋友可以去看看
在log目录下,有具体日期
在log目录下,有具体日期
在log目录下,有具体日期
给你一个小例子,自己运行一下吧.
//index.jsp
[code=HTML]
[ <body>
<form name="form1" action="myjsp.jsp" method = "post" >
please enter a:<input type="text" name="a">
please enter b:<input type="text" name="b">
<input type="submit" onclick="vldText_num()" > </form>
</body>]
//servlet
[code=Java]
[package com.number.servlet;import java.io.IOException;
import java.io.PrintWriter;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class Number extends HttpServlet{
public void doGet(HttpServletRequest request,HttpServletResponse response)
throws ServletException,IOException
{
int a = Integer.valueOf(request.getParameter("a"));
int b = Integer.valueOf(request.getParameter("b"));
int d = a<b?a:b;
PrintWriter out = response.getWriter();
out.print(d) ;
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
doGet(request, response);
}}
]
//web.xml
[code=XML]
[ <servlet>
<servlet-name>first</servlet-name>
<servlet-class>com.number.servlet.Number</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>first</servlet-name>
<url-pattern>/first</url-pattern>
</servlet-mapping>]
你去下个tomcat
再弄个日志信息的jar包
可以看出错误信息