spring boot 文件上传 Spring boot 实现单个或批量文件上传功能
佳佳乐2503 人气:1一:添加依赖:
<!-- thymeleaf模板插件 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> <!-- jsp依赖 --> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> </dependency> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> <!--<scope>provided</scope>--> </dependency>
二:application.xml配置文件路径:
#配置上传文件地址 image.location.path=f:/image/ #配置文件大小限制 spring.http.multipart.maxFileSize=100Mb spring.http.multipart.maxRequestSize=100Mb #静态页面的访问配置 spring.thymeleaf.cache=false spring.thymeleaf.prefix=classpath:/templates/ spring.thymeleaf.check-template-location=true spring.thymeleaf.suffix=.html spring.thymeleaf.encoding=UTF-8 spring.thymeleaf.content-type=text/html spring.thymeleaf.mode=HTML5
三:编写静态页面(src/main/resources下建文件夹static(static存放静态文件,比如 css、js、image…)和templates(存放静态页面)两个是同级目录),先在templates 中新建一个 uploadimg.html。
<!DOCTYPE html> <html> <head> <title>uploadimg.html</title> <meta name="keywords" content="keyword1,keyword2,keyword3"></meta> <meta name="description" content="this is my page"></meta> <meta name="content-type" content="text/html; charset=UTF-8"></meta> <!--<link rel="stylesheet" type="text/css" href="./styles.css" rel="external nofollow" >--> </head> <body> <form enctype="multipart/form-data" method="post" action="/dc/fileUpload"> 图片<input type="file" name="file"/> <input type="submit" value="上传"/> </form> </body> </html>
四:编写Controller层:
package com.hot.analysis.controller.file; import java.io.BufferedInputStream; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.OutputStream; import java.util.Date; import java.util.Random; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.beans.factory.annotation.Value; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.bind.annotation.RestController; import org.springframework.web.multipart.MultipartFile; import org.springframework.web.servlet.ModelAndView; import com.hot.analysis.exception.MyException; @RestController public class FileUploadController { //获取配置文件的路径 @Value("${image.location.path}") private String resourceDir; /** * 实现文件上传 * */ @RequestMapping(value = "/index") public ModelAndView toIndex() { ModelAndView mv = new ModelAndView("uploadimg"); return mv; } //单个文件上传 @RequestMapping("/dc/fileUpload") @ResponseBody public String fileUpload( MultipartFile file){ // 获取上传文件路径 String uploadPath = file.getOriginalFilename(); // 获取上传文件的后缀 String fileSuffix = uploadPath.substring(uploadPath.lastIndexOf(".") + 1, uploadPath.length()); if (fileSuffix.equals("apk")) { uploadPath = resourceDir; } else { // 上传目录地址 // String uploadpath="E:/hot-manage/image/";//windows路径 uploadPath =resourceDir;// liux路劲 } // 上传文件名 String fileName = new Date().getTime() + new Random().nextInt(100) + "." + fileSuffix; File savefile = new File(uploadPath + fileName); if (!savefile.getParentFile().exists()) { savefile.getParentFile().mkdirs(); } try { file.transferTo(savefile); } catch (IllegalStateException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } if (fileSuffix.equals("apk")) { return "/apk/" + fileName; } else { return "/image/" + fileName; } } // 批量上传 @PostMapping("/dc/moreFileUpload") public String bacthFileUpload(MultipartFile[] file) throws MyException { StringBuffer buffer = new StringBuffer(); for (MultipartFile multipartFile : file) { String str = fileUpload(multipartFile); buffer.append(str); buffer.append(","); } String all = buffer.substring(0, buffer.length() - 1); return all; } // 删除文件 @PostMapping("/dc/deleteFile") public String delFile(String path) { String resultInfo = null; int lastIndexOf = path.lastIndexOf("/"); String sb = path.substring(lastIndexOf + 1, path.length()); sb = "f:/image/" + sb; File file = new File(sb); if (file.exists()) { if (file.delete()) { resultInfo = "1-删除成功"; } else { resultInfo = "0-删除失败"; } } else { resultInfo = "文件不存在!"; } return resultInfo; } //文件下载相关代码 @RequestMapping("/download") public String downloadFile(HttpServletRequest request, HttpServletResponse response) { String fileName = "aim_test.txt";// 设置文件名,根据业务需要替换成要下载的文件名 if (fileName != null) { //设置文件路径 String realPath = "D://aim//"; File file = new File(realPath , fileName); if (file.exists()) { response.setContentType("application/force-download");// 设置强制下载不打开 response.addHeader("Content-Disposition", "attachment;fileName=" + fileName);// 设置文件名 byte[] buffer = new byte[1024]; FileInputStream fis = null; BufferedInputStream bis = null; try { fis = new FileInputStream(file); bis = new BufferedInputStream(fis); OutputStream os = response.getOutputStream(); int i = bis.read(buffer); while (i != -1) { os.write(buffer, 0, i); i = bis.read(buffer); } System.out.println("success"); } catch (Exception e) { e.printStackTrace(); } finally { if (bis != null) { try { bis.close(); } catch (IOException e) { e.printStackTrace(); } } if (fis != null) { try { fis.close(); } catch (IOException e) { e.printStackTrace(); } } } } } return null; } }
测试:
成功返回路径:
查看文件夹:
总结
以上所述是小编给大家介绍的Spring boot 实现单个或批量文件上传功能,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对网站的支持!
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