servlet使用入门

3/8/2017来源:ASP.NET技巧人气:2108

创建web工程servlet,然后新建TestServlet.java

package com.xmyself.servlet;
 
import java.io.IOException;
 
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
public class TestServlet extends HttpServlet {
    PRivate static final long serialVersionUID = 1L;
 
    public void init(ServletConfig config) throws ServletException {
    }
 
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws IOException, ServletException {
    }
 
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws IOException, ServletException {
        response.getWriter().write("test servlet");
    }
 
    public void destroy() {
    }
}
然后,修改web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    version="2.5">
    <display-name>servlet</display-name>
     
    <servlet>
        <servlet-name>test</servlet-name>
        <servlet-class>com.xmyself.servlet.TestServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>test</servlet-name>
        <url-pattern>/test</url-pattern>
    </servlet-mapping>
</web-app>
启动servlet工程,浏览器访问,出现“test servlet”
http://localhost:8080/servlet/test