實現檔案上傳

標籤：

首先到引入兩個jar包，分別是

commons-fileupload-1.3.1.jar
commons-io-2.4.jar

index.jsp

<form action="<%=path %>/test.jsp" method="post" enctype="multipart/form-data">  <p>檔案名稱：<input type="text" name="username"></p> <p> 選擇圖片：<input type="file" name="nfile"></p> <p><input type="submit" value="提交"></p>  </form>

 

test.jsp

<%request.setCharacterEncoding("utf-8"); boolean flag =ServletFileUpload.isMultipartContent(request);if(flag){    DiskFileItemFactory factory =new DiskFileItemFactory();    ServletFileUpload upload =new ServletFileUpload(factory);    List<FileItem> filelist =upload.parseRequest(request);    Iterator<FileItem> myitor =filelist.iterator();    while(myitor.hasNext()){        FileItem item =myitor.next();        if(item!=null){            if(item.isFormField()){                //證明是普通表單欄位 返回表單欄位的name屬性值                String name=item.getFieldName();                if(name.equals("username")){                    out.print(item.getString("utf-8"));                }            }else{            String filename =item.getName();            String path    ="WEB-INF/upload/"; //相對路徑              //就是講相對路徑轉化成絕對路徑            String absolutePath =this.getServletContext().getRealPath(path);            File file =new File(filename);            File uploadFile =new File(absolutePath,file.getName());                item.write(uploadFile);                out.print("上傳成功！"+filename);            }        }            }}%>

實現檔案上傳