一：添加依赖：
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<!-- 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：
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#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。
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<!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：
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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 ; }
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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！
原文链接：https://blog.csdn.net/qq_33355858/article/details/81747101
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