java - getpathtranslated 返回 null

Question

我尝试实现方法getPathTranslated()但总是返回null的事情，这是我使用的方法:

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException; 
import javax.servlet.http.HttpServlet; 
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class FileLocation extends HttpServlet {

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //response.setContentType("text/html;charset=UTF-8");
        response.setContentType("text/plain");
        PrintWriter out = response.getWriter();

        if (request.getPathInfo() != null) {
            out.println("The file \"" + request.getPathInfo() + "\"");
            out.println("Is stored at \"" + request.getPathTranslated() + "\"");
        } else {
            out.println("Path info is null, no file to lookup");
        }
    }
}

Answer 1

如果您尝试检索与 URL 路径相对应的文件系统路径，请尝试 getServletContext().getRealPath("your_path")。