receive file success

receive_file_spring_boot.kt

package com.kikt.demo

import org.springframework.web.bind.annotation.RequestMapping
import java.io.IOException
import com.sun.tools.corba.se.idl.toJavaPortable.Util.mkdir
import org.springframework.web.bind.annotation.RequestParam
import org.springframework.web.bind.annotation.RestController
import org.springframework.web.multipart.MultipartFile
import java.io.File


@RequestMapping("/api")
@RestController
class TestFileUploadController {

    @RequestMapping("/test")
    fun upload(@RequestParam("file") file: MultipartFile): String {
        if (file.isEmpty()) {
            return "false"
        }
        val fileName = file.getOriginalFilename()

        println("fileName = $fileName")

        val size = file.getSize()

        val path = "/Users/cai/Documents/upload"
        val dest = File(path, File(fileName).name)
        if (!dest.getParentFile().exists()) { //判断文件父目录是否存在
            dest.getParentFile().mkdir()
        }

        dest.createNewFile()

        file.transferTo(dest)

        return "file name = $fileName , size = $size , "
    }
}