JSP page access servlet path error 404 in self-built directory

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JSP page access servlet path error 404 in self-built directory

Using Eclipse-built projects, you will always encounter path problems, such as JSP page Access servlet,jsp in the default path, JSP access path in the self-built directory (web. Xml URL) is different. If the access path is not set, there will always be a headache of 404 access results:

Below is the giveradius.jsp page input radius, which is submitted to the servlet's Computer.java to find the area.

First, the JSP page under the default webconnet

1 Project Structure

2 Web. XML content

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns= "http://xmlns.jcp.org/xml/ Ns/javaee " xsi:schemalocation=" Http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/ Web-app_3_1.xsd "id=" webapp_id " version=" 3.1">

<servlet>

<servlet-name>computer</servlet-name>

<servlet-class>ch7.servlet.Computer</servlet-class>

</servlet>

<servlet-mapping>

<servlet-name>computer</servlet-name>

<url-pattern>/getRadius</url-pattern>

</servlet-mapping>

</web-app>

3 giveradius.jsp

<%@ page language="java" contenttype="text/html; Charset=utf-8 "

pageencoding="UTF-8"%>

<! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" "HTTP://WWW.W3.ORG/TR/HTML4/LOOSE.DTD" >

Cyan><font size=3>

< FORM Action = "Getradius" Method = Post >

<BR> radius of Input circle: <input type=text name=radius>

<input type= submit value=" submit ">

</FORM>

</Font></BODY></HTML>

4 operation results Note the path

Second if giveradius.jsp in the self-built directory, access path needs to be based on the self-built directory to make corresponding changes, JSP page in the Ch7 directory, then Url=/ch7/getradius.

1 Project Structure

2 Web

3 operation results Note that the access path has changed.

JSP page access servlet path error 404 in self-built directory