一：添加依賴：
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<!-- thymeleaf模板插件 --> <dependency> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-thymeleaf</artifactid> </dependency> <!-- jsp依賴 --><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配置文件路徑：
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#配置上傳文件地址image.location.path=f:/image/#配置文件大小限制spring.http.multipart.maxfilesize=100mbspring.http.multipart.maxrequestsize=100mb#靜態頁面的訪問配置spring.thymeleaf.cache=falsespring.thymeleaf.prefix=classpath:/templates/spring.thymeleaf.check-template-location=truespring.thymeleaf.suffix=.htmlspring.thymeleaf.encoding=utf-8spring.thymeleaf.content-type=text/htmlspring.thymeleaf.mode=html5 |
三：編寫靜態頁面（src/main/resources下建文件夾static（static存放靜態文件，比如 css、js、image…）和templates（存放靜態頁面）兩個是同級目錄），先在templates 中新建一個 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"> 圖片<input type="file" name="file"/> <input type="submit" value="上傳"/> </form> </body></html> |
四：編寫controller層：
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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;@restcontrollerpublic class fileuploadcontroller { //獲取配置文件的路徑 @value("${image.location.path}") private string resourcedir; /** * 實現文件上傳 * */ @requestmapping(value = "/index") public modelandview toindex() { modelandview mv = new modelandview("uploadimg"); return mv; } //單個文件上傳 @requestmapping("/dc/fileupload") @responsebody public string fileupload( multipartfile file){ // 獲取上傳文件路徑 string uploadpath = file.getoriginalfilename(); // 獲取上傳文件的后綴 string filesuffix = uploadpath.substring(uploadpath.lastindexof(".") + 1, uploadpath.length()); if (filesuffix.equals("apk")) { uploadpath = resourcedir; } else { // 上傳目錄地址 // string uploadpath="e:/hot-manage/image/";//windows路徑 uploadpath =resourcedir;// liux路勁 } // 上傳文件名 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; } } // 批量上傳 @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; } // 刪除文件 @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-刪除成功"; } else { resultinfo = "0-刪除失敗"; } } else { resultinfo = "文件不存在！"; } return resultinfo; } //文件下載相關代碼 @requestmapping("/download") public string downloadfile(httpservletrequest request, httpservletresponse response) { string filename = "aim_test.txt";// 設置文件名，根據業務需要替換成要下載的文件名 if (filename != null) { //設置文件路徑 string realpath = "d://aim//"; file file = new file(realpath , filename); if (file.exists()) { response.setcontenttype("application/force-download");// 設置強制下載不打開 response.addheader("content-disposition", "attachment;filename=" + filename);// 設置文件名 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; } } |
測試：
成功返回路徑：
查看文件夾：
總結
以上所述是小編給大家介紹的spring boot 實現單個或批量文件上傳功能，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對服務器之家網站的支持！
原文鏈接：https://blog.csdn.net/qq_33355858/article/details/81747101
