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SpringBoot多文件上传

article 2024/11/25 7:55:31

多文件上传是在单文件上传的基础上修改而来，不了解单文件上传可以参考上一篇。以下在将修改部分展示如下：

一、修改upload.html文件：

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>多文件上传页面</title>
</head>
<body>
<form action="/upload" method="post" enctype="multipart/form-data">
<input type="file" name="uploadFile" value="请选择文件" multiple>
<input type="submit" value="上传">
</form>
</body>
</html>

二、修改控制器：

多文件上传的逻辑与单文件类似，只是其基础上接收部分多了文件数组，再遍历一回完成如下：

package org.sang.cc;

import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

import javax.servlet.http.HttpServletRequest;

import org.springframework.util.ResourceUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

@RestController
public class FileUploadController {
	SimpleDateFormat sdf=new SimpleDateFormat("yyyy/MM/dd");
	@PostMapping("/upload")
	public String upload(MultipartFile[] uploadFile,HttpServletRequest req)
	{
		try {
		//String realPath=req.getSession().getServletContext().getRealPath("/");
		String realPath=ResourceUtils.getURL("classpath:").getPath();		
		String format=sdf.format(new Date());
		System.out.println("realPath:"+realPath+"static/"+format);
		File folder=new File(realPath+"static/"+format);
		if(!folder.isDirectory())
		{
			folder.mkdirs();
		}
		String[] filePath=new String[uploadFile.length];
		String s="";
		for(int i=0;i<uploadFile.length;i++)
		{
			String oldName=uploadFile[i].getOriginalFilename();
			String newName=UUID.randomUUID().toString()+oldName.substring(oldName.lastIndexOf("."),oldName.length());
			
				uploadFile[i].transferTo(new File(folder,newName));				
				filePath[i]=req.getScheme()+"://"+req.getServerName()+":"+
				req.getServerPort()+"/static/"+format+"/"+newName;				
				s+=filePath[i]+"   <br>";
		}	
		return s;
		}catch(IOException e)
		{
			e.printStackTrace();
		}
		return "上传失败!";
		
	}
}

三、运行结果：