保存进度!

code/后端/desktop_archievement_backend/src/main/java/com/cpic/xim/web/controllers/fileupload/FileUpload.java

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+/*
+ * @Author: Kane
+ * @Date: 2023-01-22 23:11:26
+ * @LastEditors: Kane
+ * @LastEditTime: 2023-09-25 22:56:49
+ * @FilePath: /desktop_archievement_backend/src/main/java/com/cpic/xim/web/controllers/FileUpload/FileUpload.java
+ * @Description: 用于接受上传文件的Controller。
+ * 
+ * Copyright (c) ${2022} by Kane, All Rights Reserved. 
+ */
+
+package com.cpic.xim.web.controllers.fileupload;
+
+import java.io.File;
+import java.util.Vector;
+import javax.servlet.http.HttpServletRequest;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.multipart.MultipartFile;
+
+@SuppressWarnings( "unused" )
+@Controller
+@RequestMapping( path = "/file" )
+public class FileUpload
+{
+    /*****************************************************
+     * 接收上传文件，并保存到临时目录：
+     * 1、临时目录下再用sessionID作为子目录保存文件。
+     * 2、保存时不更改文件名，会覆盖同名文件。
+     * 3、MultipartFile参数形参名称必须和请求form中file标签的name属性一致，否则值为null。
+     * 4、返回值为接收结果和文件保存路径。
+     *****************************************************/
+    @RequestMapping( path = "/file-upload.do" )
+    @ResponseBody
+    public FileUploadResult getUploadFile( @RequestParam( "task-name" ) String taskName,
+            @RequestParam( "file" ) MultipartFile[] files, HttpServletRequest request )
+    {
+        // session id用来创建临时目录，避免重复
+        String sessionID = request.getSession().getId();
+        FileUploadResult result = new FileUploadResult();
+        Vector<String> fileNames = new Vector<String>();
+        int fileCount = files.length;
+
+        // 防御验证
+        if ( files.length == 0 )
+        {
+            result.setSuccess( false );
+            result.setMessage( "此接口用于上传文件!" );
+
+            return result;
+        }
+
+        result.setSuccess( true );
+        result.setMessage( "上传成功!" );
+
+        for ( MultipartFile file : files )
+        {
+            // 检查文件长度，如果为0则跳过
+            if ( file.isEmpty() )
+            {
+
+                continue;
+            }
+
+            // 保存文件到临时目录
+            String filePath =
+                    request.getServletContext().getRealPath( "/temp/upload/" + sessionID );
+            String fileName = file.getOriginalFilename();
+            File destFile = new File( filePath, fileName );
+
+            fileNames.add( file.getOriginalFilename() );
+        }
+
+        result.setFileList( fileNames );
+
+        return result;
+    }
+}

code/后端/desktop_archievement_backend/src/main/java/com/cpic/xim/web/controllers/fileupload/FileUploadResult.java

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+/*
+ * @Author: Kane
+ * @Date: 2023-01-23 22:56:17
+ * @LastEditors: Kane
+ * @LastEditTime: 2023-09-25 22:57:00
+ * @FilePath: /desktop_archievement_backend/src/main/java/com/cpic/xim/web/controllers/FileUpload/FileUploadResult.java
+ * @Description: 
+ * 
+ * Copyright (c) ${2022} by Kane, All Rights Reserved. 
+ */
+
+package com.cpic.xim.web.controllers.fileupload;
+
+import java.util.Vector;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+@SuppressWarnings( "unused" )
+public class FileUploadResult
+{
+    public FileUploadResult()
+    {}
+
+    public boolean isSuccess()
+    {
+        return success;
+    }
+
+    public void setSuccess( boolean success )
+    {
+        this.success = success;
+    }
+
+    public String getMessage()
+    {
+        return message;
+    }
+
+    public void setMessage( String message )
+    {
+        this.message = message;
+    }
+
+    public Vector<String> getFileList()
+    {
+        return fileList;
+    }
+
+    public void setFileList( Vector<String> fileList )
+    {
+        this.fileList = fileList;
+    }
+
+    @JsonProperty( "success" )
+    private boolean success;
+
+    @JsonProperty( "message" )
+    private String message;
+
+    @JsonProperty( "file-list" )
+    private Vector<String> fileList;
+}
+