jsp中擷取絕對路徑和相對路徑方法

最後更新：2017-01-13 來源：互聯網

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//在Servlet與JSP中取得當前檔案所在的相對路徑與絕對路徑

JSP中

根目錄所對應的絕對路徑:request.getRequestURI()
檔案的絕對路徑　:application.getRealPath(request.getRequestURI());
當前web應用的絕對路徑 :application.getRealPath("/");
取得請求檔案的上層目錄:new File(application.getRealPath(request.getRequestURI())).getParent()
　　3.2 Servlet中獲得當前應用的相對路徑和絕對路徑
根目錄所對應的絕對路徑:request.getServletPath();
檔案的絕對路徑 :request.getSession().getServletContext().getRealPath
　　(request.getRequestURI())
當前web應用的絕對路徑 :servletConfig.getServletContext().getRealPath("/");

代碼如下

複製代碼

out.println("根目錄所對應的絕對路徑:" + request.getRequestURI() + " ");

String strPathFile = application.getRealPath(request.getRequestURI());
out.println("檔案的絕對路徑:" + strPathFile+ " ");
out.println(application.getRealPath(request.getRequestURI()));
String strDirPath = new File(application.getRealPath(request.getRequestURI())).getParent();
out.println("目錄的絕對路徑:" + strDirPath + " ");

程式

代碼如下

複製代碼

String classPath = this.getClass().getClassLoader().getResource("/").getPath();

  try {
   classPath =URLDecoder.decode(classPath, "gb2312");
  } catch (UnsupportedEncodingException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
}

例子

代碼如下

複製代碼

<body>
當前WEB應用的實體路徑：<%=application.getRealPath("/")%> 
當前你求請的JSP檔案的實體路徑：<%=application.getRealPath(request.getRequestURI())%> 
<%
 String path=application.getRealPath(request.getRequestURI());
 String dir=new File(path).getParent();
 out.println("當前JSP檔案所在目錄的實體路徑"+dir+"");
 String realPath1 = "http://" + request.getServerName() + ":" + request.getServerPort() + request.getContextPath()+request.getServletPath().substring(0,request.getServletPath().lastIndexOf("/")+1);
 out.println("web URL 路徑:"+realPath1);
%>
</body>

servlet中獲得項目絕對路徑
String filePath=this.getServletConfig().getServletContext().getRealPath("/");

根目錄所對應的絕對路徑:request.getServletPath();

檔案的絕對路徑 :request.getSession().getServletContext().getRealPath(request.getRequestURI())

當前web應用的絕對路徑 :servletConfig.getServletContext().getRealPath("/");

ServletContext對象獲得幾種方式：

代碼如下

複製代碼

Javax.servlet.http.HttpSession.getServletContext()

Javax.servlet.jsp.PageContext.getServletContext()

Javax.servlet.ServletConfig.getServletContext()

檔案的絕對路徑 :request.getSession().getServletContext().getRealPath(request.getRequestURI())

當前web應用的絕對路徑 :servletConfig.getServletContext().getRealPath("/");

例

//JSP中的application對象就是Servlet中的ServerContext，所以在Servlet中是如此獲得
//import java.io.File;

System.out.println("根目錄所對應的絕對路徑:" + request.getServletPath() + " ");

String strPathFile = request.getSession().getServletContext().getRealPath(request.getRequestURI());
System.out.println("檔案的絕對路徑:" + strPathFile + " ");

String strDirPath = new File(request.getSession().getServletContext().getRealPath(request.getRequestURI())).getParent();
System.out.println("目錄的絕對路徑:" + strDirPath + " ");

檔案名稱不能包括以下字元：/:*?"<>|

擷取Web項目的全路徑
String strDirPath = getServletContext().getRealPath("/");

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