1 第一个Servlet
1、创建Java Web工程
2、引入serverlet-api
3、新建Servlet类
package com.xianhuii.servlet;
import javax.servlet.*;
import java.io.IOException;
import java.io.PrintWriter;
public class MyFirstServlet implements Servlet {
@Override
public void init(ServletConfig servletConfig) throws ServletException {
System.out.println("init");
}
@Override
public ServletConfig getServletConfig() {
return null;
}
@Override
public void service(ServletRequest request, ServletResponse response) throws ServletException, IOException {
System.out.println("service");
PrintWriter writer = response.getWriter();
writer.println("Hello, Java Web!");
}
@Override
public String getServletInfo() {
return null;
}
@Override
public void destroy() {
System.out.println("destroy");
}
}4、部署
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<!-- 配置Servlet -->
<servlet>
<servlet-name>myFirstServlet</servlet-name>
<servlet-class>com.xianhuii.servlet.MyFirstServlet</servlet-class>
</servlet>
<!-- 配置映射的URL -->
<servlet-mapping>
<servlet-name>myFirstServlet</servlet-name>
<url-pattern>/hello</url-pattern>
</servlet-mapping>
</web-app>5、编写前端页面
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>$Title$</title>
</head>
<body>
<a href="/hello">hello</a>
</body>
</html>6、运行
