Java Servlet应用程序文件上传失败[重复]

问题描述 投票：0回答：1
我正在尝试使用java servlet创建到File Upload并存储到本地目录。我添加了cos.jr文件。我向roor direcorty添加了一个新文件夹，名称为new。但是，当我单击按钮文件时，上传它会给我以下错误。

java.lang.IllegalArgumentException：不是目录：d：/ new

这是html。

<html> <body> <form action="FileUploadServlet" method="post" enctype="multipart/form-data"> Select File:<input type="file" name="fname"/><br/> <input type="submit" value="upload"/> </form> </body> </html> 

这是servlet代码。
package Servlet.org;
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;
import com.oreilly.servlet.MultipartRequest; 


public class FileUploadServlet extends HttpServlet {

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

        }


        @Override
        protected void doPost(HttpServletRequest request, HttpServletResponse response)
                throws ServletException, IOException {
            processRequest(request, response);
            response.setContentType("text/html");  
             PrintWriter out = response.getWriter();  

           MultipartRequest m=new MultipartRequest(request,"d:/JAVAServlet/new");  
           out.print("successfully uploaded");
        }


        @Override
        public String getServletInfo() {
            return "Short description";
        }// </editor-fold>

    }

这里是我单击上传按钮时的结果。
enter image description here
java servlets
1个回答
1
投票
我认为这可能是路径或某些权限问题。不确定该原因为何显示为用d:/new代替d:/JAVAServlet/new。尝试下面的代码，看看是否创建目录。

public static void main(String[] args) { String saveDirectory = "d:" + File.separator + "JAVAServlet" + File.separator+ "new"; File dir = new File(saveDirectory); if(!dir.isDirectory()){ throw new IllegalArgumentException("Not a directory: " + saveDirectory); } } 

目录创建权限或路径可能有问题。或尝试使用File.separator代替/"d:" + File.separator + "JAVAServlet" + File.separator+ "new"
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