servlet web配置
2016-02-25 17:57
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<display-name></display-name>
<!-- 配置和映射Servlet -->
<servlet>
<!-- Servlet注册的名字 -->
<servlet-name>HelloServlet</servlet-name>
<!-- 类全名 -->
<servlet-class>com.atguigu.javaweb.HelloServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloServlet</servlet-name>
<url-pattern>/servlet/HelloServlet</url-pattern>
<!--可以指定Servlet被创建时机 -->
<load-on-startup>1</load-on-startup>
</servlet-mapping>
2 <servlet 四个生命周期的方法
package com.atguigu.javaweb;
import java.io.IOException;
import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;
public class HelloServlet implements Servlet {
@Override
public void destroy() {
// TODO Auto-generated method stub
System.out.println("destroy");
}
@Override
public ServletConfig getServletConfig() {
// TODO Auto-generated method stub
System.out.println("getServletConfig");
return null;
}
@Override
public String getServletInfo() {
// TODO Auto-generated method stub
System.out.println("getServletInfo");
return null;
}
@Override
public void init(ServletConfig arg0) throws ServletException {
// TODO Auto-generated method stub
System.out.println("init");
}
@Override
public void service(ServletRequest arg0, ServletResponse arg1)
throws ServletException, IOException {
// TODO Auto-generated method stub
}ssss
public HelloServlet(){
System.out.println("HelloServlet's constrc");
}
}
<!-- 配置和映射Servlet -->
<servlet>
<!-- Servlet注册的名字 -->
<servlet-name>HelloServlet</servlet-name>
<!-- 类全名 -->
<servlet-class>com.atguigu.javaweb.HelloServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloServlet</servlet-name>
<url-pattern>/servlet/HelloServlet</url-pattern>
<!--可以指定Servlet被创建时机 -->
<load-on-startup>1</load-on-startup>
</servlet-mapping>
2 <servlet 四个生命周期的方法
package com.atguigu.javaweb;
import java.io.IOException;
import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;
public class HelloServlet implements Servlet {
@Override
public void destroy() {
// TODO Auto-generated method stub
System.out.println("destroy");
}
@Override
public ServletConfig getServletConfig() {
// TODO Auto-generated method stub
System.out.println("getServletConfig");
return null;
}
@Override
public String getServletInfo() {
// TODO Auto-generated method stub
System.out.println("getServletInfo");
return null;
}
@Override
public void init(ServletConfig arg0) throws ServletException {
// TODO Auto-generated method stub
System.out.println("init");
}
@Override
public void service(ServletRequest arg0, ServletResponse arg1)
throws ServletException, IOException {
// TODO Auto-generated method stub
}ssss
public HelloServlet(){
System.out.println("HelloServlet's constrc");
}
}
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