Question

通过JSP 页面调用servlet方法？

Answer 1

//eclipse
建个web
project，一个
//1.jsp网页
<form
action="login"
method="post">//action值和web.xml中的url-pattern值对应
<input
type="text"
name="username"></input>
<input
type="password"
name="userpassword"></input>
<br><input
type="submit"
value="登录">
//3.servelet的java类，重写doPost方法，简单输出name和password值。
public
class
LoginServlet
extends
HttpServlet{
protected
void
doPost(HttpServletRequest
req,HttpServletResponse
res){
String
name=req.getParameter("username");
String
password=req.getParameter("userpassword");
System.out.println(name+","+password);
}
}
//2.web.xml
WEB-INF下lib文件夹,每次修改web文件，必须重启tomcat。
<servlet>
<servlet-name>long</servlet-name>//和下面servlet-name值一样即可
<servlet-class>com.servlet.LoginServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>long</servlet-name>//和上面servlet-name值一样即可
<url-pattern>/login</url-pattern>//
</servlet-mapping>