JSP relative path and absolute path quest

Browser-side with a bar

The address of the first browser http://localhost:8080/example/index.jsp

If written

<ahref="/SERVLET/TESTDBSVL"> Click to enter servlet</a>

with the bar, is the absolute path, from the http://localhost:8080/

Start recording, which means

Http://localhost:8080/servlet/TestDBSvl

Clicking on the link occurs when the client jumps, URL Change

So this is going to start with the app name.

<imgsrc="/images/back.png"alt= ""/>

I can't find them.

With no bars.

The address of the first browser http://localhost:8080/example/index.jsp

But if it's not with a bar,

<ahref="myjsp.jsp"> Click to enter a new page </a>

is the relative engineering name started looking for

Clicking on the link occurs when the client jumps, URL Change

<imgsrc="/images/back.png"alt= ""/>

can find

Http://localhost:8080/example/images/back.png

?

Server-side servletrequestdispatcher with a bar

???? Request.getrequestdispatcher ("/myjsp.jsp"). Forward (request,response);

Obviously, the URL hasn't changed.

?

Relative path without a bar

Request.getrequestdispatcher ("myjsp.jsp"). Forward (request,response);

Did not remove the servlet

Servlet jump to page can I find a picture?

Request.getrequestdispatcher ("/index.jsp"). Forward (request,response);

index.jsp

<imgsrc="Images/back.png"alt= ""/>

can find pictures

?

Http://localhost:8080/example/images/back.png

Redirect

browser in " http://localhost:8080/example//SERVLET/TESTDBSVL

With a bar.

Request.getrequestdispatcher ("/index.jsp"). Forward (Request,response);

can find the page http://localhost:8080/example/index.jsp

?

Response.sendredirect ("/myjsp.jsp");

http://localhost:8080/MyJsp.jsp the page could not be found!

Of course, the page cannot be found on the browser side.

http://localhost:8080/MyJsp.jsp

?

With no bars.

Response.sendredirect ("myjsp.jsp");

//http://localhost:8080/example/servlet/myjsp.jsp Page not found

???????? // There 's no way I can write it all.

Of course, the page can be found on the browser, because it is relative to

http://localhost:8080/example/index.jsp to say

Jsp:forward

<jsp:forwardpage="/myjsp.jsp"/>

Server jump, can find the page

?

Summary with the absolute address of the bar

Addressing method = offset + address

Offset

Client Jump http://localhost:8080

Server-side Jump Http://localhost:8080/example

This offset is not related to whether you're on the browser or the servlet.

?

Relative address without a bar

The way to address is to cross out the last \ Post, plus the relative new address you wrote.

So what happens if I write a two?

Browser Address http://localhost:8080/example/index.jsp

<%response.sendredirect ("example/myjsp.jsp"); %>

The addressing result is http://localhost:8080/example/example/MyJsp.jsp

so no matter how many you have, it's the last \ post of the previous address, plus the new address.

?

Note is not necessarily the address displayed on the address bar of the browser

Like what

Index.jsp into the servlet, the address bar is

Http://localhost:8080/example/servlet/TestDBSvl

Then through the dispatcher, back to the index.jsp

The address bar is still not servlet, click Relative path

<ahref="myjsp.jsp"> Click to enter a new page </a>

Can you find it?

I can do that!

http://localhost:8080/example/MyJsp.jsp

?

So what am I writing?

For development, a unified standard, the most important, or to want to go on for half a day,

Write a bar, you have to judge the server jump or browser jump

Write without a bar, relative path iffy

So, all with

It's all written, so you don't bother.

<base?href= "<%=basePath%>" >

Discard the <%=BASEPATH%>SERVLET/STOREDISHSVL before, but add this to the head of the page

<!--? base need to put inHeadin ?-->
<base?href= "<%=basePath%>" >

//?Here we can use the relative path directly(that:?relative toBaselabel)
<a?href= "jsp/login.jsp" >Login</a>

For servlet dispatcher writing a bar

For servlet redirect with no bar, no, it's all written.

JSP relative path and absolute path quest