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  • servlet入门

    1.在tomcat中新建一个test应用,然后在web应用中新建一个web-inf/classes目录
    2.在classes目录中新建一个FirstServlet.java

    package cn.itcast;

    import java.io.*;
    import javax.servlet.*;
    public class FirstServlet extends GenericServlet{

    public void service(ServletRequest req,ServletResponse res) throws ServletException,java.io.IOException{
    OutputStream out = res.getOutputStream();
    out.write("hello servlet!!!".getBytes());
    }

    }

    3.set classpath=%classpath%;C:apachelibservlet-api.jar 编译servlet

    4.在web-inf目录中新建一个web.xml文件,配置servlet的对外访问路径

    <?xml version="1.0" encoding="ISO-8859-1"?>

    <web-app xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    version="2.5">

    <servlet>
    <servlet-name>FirstServlet</servlet-name>
    <servlet-class>cn.itcast.FirstServlet</servlet-class>
    </servlet>


    <servlet-mapping>
    <servlet-name>FirstServlet</servlet-name>
    <url-pattern>/FirstServlet</url-pattern>
    </servlet-mapping>

    </web-app>

    5.启动tomcat,访问

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  • 原文地址:https://www.cnblogs.com/xiaohuihui123/p/4378859.html
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