WEB相对路径绝对路径理解

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WEB相对路径:相对上下文地址

如:http://localhost:8080/fileupload/fileupload.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<p>Choose the file for uploading:</p>
  <form action="Accept" method=post enctype="multipart/form-data">
    <input type=file name="fileforload1" size=30>
    <input type=file name="fileforload2" size=30>
    <!-- input type="text" name="text1" value="safdas" />
    <input type="checkbox" name="testcheckbox" value="asdfasfd" /> -->
    <br>
    <input type=submit value=commit name=submit>
  </form>
</body>
</html>

submit之后,地址为:http://localhost:8080/fileupload/Accept


WEB绝对路径:相对于主机地址

如:http://localhost:8080/fileupload/fileupload.jsp

注:web上下文fileupload

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<p>Choose the file for uploading:</p>
  <form action="/Accept" method=post enctype="multipart/form-data">
    <input type=file name="fileforload1" size=30>
    <input type=file name="fileforload2" size=30>
    <!-- input type="text" name="text1" value="safdas" />
    <input type="checkbox" name="testcheckbox" value="asdfasfd" /> -->
    <br>
    <input type=submit value=commit name=submit>
  </form>
</body>
</html>

submit之后,地址为:http://localhost:8080/Accept


WEB.xml路径设置

<servlet>
    <description>This is the description of my J2EE component</description>
    <display-name>This is the display name of my J2EE component</display-name>
    <servlet-name>Accept</servlet-name>
    <servlet-class>fileupload.Accept</servlet-class>
  </servlet>


  <servlet-mapping>
    <servlet-name>Accept</servlet-name>
    <url-pattern>/Accept</url-pattern><!--一定需要以/开头    绝对路径:相对上下文-->
  </servlet-mapping>

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