一、通过MyEclipse创建servlet
1. 创建一个webProject，名为servletTest
2. src下新建HelloServlet.java文件
package com.it.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class HelloServlet extends HttpServlet{
@Override
public void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
resp.getWriter().write("Hello Servlet");//将信息显示在页面上
}
@Override
public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doGet(req, resp);
}
}
3. WEB-INF下配置web.xml
<?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_3_1.xsd"
version="3.1"
metadata-complete="true">
<servlet>
<servlet-name>HS</servlet-name>
<servlet-class>com.it.servlet.HelloServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HS</servlet-name>
<url-pattern>/hs</url-pattern>
</servlet-mapping>
</web-app>4.WebRoot下配置1.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="/day7_1/hs" method="get">
<input type="submit" value="submit"/>
</form>
</body>
</html>二、Servlet体系
三、创建一个servlet步骤：
1. 创建一个类，去继承HttpServlet（实现Servlet接口或继承GenericServlet）
2. 重写方法 doGet doPost（接口中需要将所有方法重写，但是service方法时处理请求的）
3. 在web.xml文件中配置
