使用springboot上传附件

墨蓝 2022-02-20 11:16 585阅读 0赞

*  在pom.xml中添加上传附件依赖

<dependency>
    	<groupId>org.springframework.boot</groupId>
    	<artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
    	<groupId>commons-fileupload</groupId>
    	<artifactId>commons-fileupload</artifactId>
    	<version>1.3.3</version>
    </dependency>

*  编写上传附件页面upload.html

<!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
    <form name="uploadForm" method="post" action="/upload" enctype="multipart/form-data" >
        <div style="margin: 10px 10px 10px 10px;">
            <input type="file" name="file" multiple value="请选择附件..." title="上传附件" /><br>
            <div style="margin-top: 5px;"></div>
            <input type="submit"value="提交">
        </div>
    
    </form>
    
    </body>
    </html>

*  编写controller

package com.example.springbootdemo.controller;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.bind.annotation.ResponseBody;
    import org.springframework.web.multipart.MultipartFile;
    import org.thymeleaf.util.StringUtils;
    
    import javax.servlet.http.HttpServletRequest;
    import java.io.*;
    import java.util.Date;
    
    
    @Controller
    public class TestController {
      
        @RequestMapping("/uploadfile")
        public String uploadFile(){
            return "upload";
        }
    
        @RequestMapping(value="/upload",method = RequestMethod.POST)//MultipartFile,CommonsMultipartFile
        public String upload( MultipartFile file) throws IOException {
            //用来检测程序运行时间
            long  startTime=System.currentTimeMillis();
            System.out.println("fileName："+file.getOriginalFilename());
    
            try {
    //            File fileDirectory = new File("E:/上传文件/"+new Date().getTime());
    //            if(fileDirectory.exists()){
    //
    //            }else {
    //                fileDirectory.mkdirs();
    //            }
                //获取输出流
                OutputStream os=new FileOutputStream("E:\\Idea_workspace\\helloworld\\springbootdemo\\uploadfiles\\"+new Date().getTime()+file.getOriginalFilename());
                //获取输入流 CommonsMultipartFile 中可以直接得到文件的流
                InputStream is=file.getInputStream();
    
                int temp;
                //一个一个字节的读取并写入
                while((temp=is.read())!=(-1))
                {
                    os.write(temp);
                }
                os.flush();
                os.close();
                is.close();
    
            } catch (FileNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            long  endTime=System.currentTimeMillis();
            System.out.println("方法一的运行时间："+String.valueOf(endTime-startTime)+"ms");
            return "success";
        }
    }

*  示例页面，可以上传多个文件（需要在同一文件夹下）  
    ![在这里插入图片描述][20190413153447162.png]  
    ![在这里插入图片描述][20190413153530627.png]  
    点击提交，跳转到提交成功页面  
    ![在这里插入图片描述][20190413153615635.png]  
    大家可以扫一扫关注下我的公众号哟  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2V0aGFuX194dQ_size_16_color_FFFFFF_t_70]

[20190413153447162.png]: /images/20220220/5e0214dc1b584bd987284911a0247184.png
[20190413153530627.png]: /images/20220220/0f24f5fea1c04bb8903021a090d2272a.png
[20190413153615635.png]: /images/20220220/895416abf7f841fb8c91c86df40622d1.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2V0aGFuX194dQ_size_16_color_FFFFFF_t_70]: /images/20220220/8c4f596c14df4c29af593ef29fb18d22.png