Tomcat项目中路径问题

约定不等于承诺〃 2022-06-15 09:28 299阅读 0赞

**所有路径都分为服务器端解析和客户端解析**

**一(/或者)**  
1.服务端:不管是js还是html，都代表主机名和端口号的路径，如:localhost:8080  
列:

action="/"
    href="/"
    location.href="/"
    response.sendRedirect("/");

2.客户端:客户端解析为主机名端口号在加项目名，如:localhost:8080/项目名称(Test)  
例:

request.getRequestDispatcher("/").forward(request, response);//会报错
    <%@ include file="/" %>
    <jsp:include page="/"></jsp:include>

**二(../)**  
1.不管是客户端还是服务端，都代表当前文件的上一级目录，如：[http://localhost:8080/Test/page/other/a.jsp][http_localhost_8080_Test_page_other_a.jsp]，在此jsp执行../的结果:[http://localhost:8080/Test/page/][http_localhost_8080_Test_page]  
例:

action="../"
    href="../"
    location.href="../"
    response.sendRedirect("../");
    request.getRequestDispatcher("../").forward(request, response);

**三(./)**  
1.不管是客户端还是服务端，都代表当前文件的同级目录，如：[http://localhost:8080/Test/page/other/a.jsp][http_localhost_8080_Test_page_other_a.jsp]，在此jsp执行./的结果:[http://localhost:8080/Test/page/other/][http_localhost_8080_Test_page_other]  
例:

action="./"
    href="./"
    location.href="./"
    response.sendRedirect("./");
    request.getRequestDispatcher("./").forward(request, response);

四(“”)  
1.客户端:代表当前元素自己，如：[http://localhost:8080/page/a.jsp][http_localhost_8080_page_a.jsp]中的的结果:[http://localhost:8080/page/a.jsp][http_localhost_8080_page_a.jsp]  
例:

action=""
    href=""
    location.href=""
    response.sendRedirect("");

2.服务器:代表项目的根目录，如：localhost:8080/Test

request.getRequestDispatcher("").forward(request, response);

**五.(xx或者xx.xx)**  
客户端:代表当前文件同级的xx文件夹或者xx.xx文件

action="xx"
    href="xx"
    location.href="xx"
    response.sendRedirect("xx");
    <%@ include file="xx" %>
    <jsp:include page="xx"></jsp:include>

需要注意的是:  
[http://localhost:8080/items/toAdd][http_localhost_8080_items_toAdd]  
页面下的  
  
会变成[http://localhost:8080/items/items/add][http_localhost_8080_items_items_add]

服务器:代表项目根目录下的xx文件夹或者xx.xx文件

request.getRequestDispatcher("").forward(request, response);

[http_localhost_8080_Test_page_other_a.jsp]: http://localhost:8080/Test/page/other/a.jsp
[http_localhost_8080_Test_page]: http://localhost:8080/Test/page/
[http_localhost_8080_Test_page_other]: http://localhost:8080/Test/page/other/
[http_localhost_8080_page_a.jsp]: http://localhost:8080/page/a.jsp
[http_localhost_8080_items_toAdd]: http://localhost:8080/items/toAdd
[http_localhost_8080_items_items_add]: http://localhost:8080/items/items/add