一、創建一個簡單的包含WEB依賴的SpringBoot項目
pom.xml
內容:
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<!-- Spring Boot web啟動器 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- jsp --> <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、配置文件上傳的文件大小限制
application.properties
配置文件添加:
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# 上傳文件總的最大值 spring.servlet.multipart.max-request-size=10MB # 單個文件的最大值 spring.servlet.multipart.max-file-size=10MB ## jsp spring.mvc.view.prefix=/WEB-INF/jsp/ spring.mvc.view.suffix=.jsp |
-
spring.servlet.multipart.max-file-size
限制單個文件的最大值 -
spring.servlet.multipart.max-request-size
限制上傳的多個文件的總大小
三、單文件上傳示例
1、創建Controller控制類,內容如下:
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package com.songguoliang.springboot.controller; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.multipart.MultipartFile; import org.springframework.web.multipart.MultipartHttpServletRequest; import javax.servlet.http.HttpServletRequest; import java.io.File; import java.io.IOException; import java.util.List; /** * @Description * @Author sgl * @Date 2018-05-15 14:04 */ @Controller public class UploadController { private static final Logger LOGGER = LoggerFactory.getLogger(UploadController. class ); @GetMapping ( "/upload" ) public String upload() { return "upload" ; } @PostMapping ( "/upload" ) @ResponseBody public String upload( @RequestParam ( "file" ) MultipartFile file) { if (file.isEmpty()) { return "上傳失敗,請選擇文件" ; } String fileName = file.getOriginalFilename(); String filePath = "/Users/itinypocket/workspace/temp/" ; File dest = new File(filePath + fileName); try { file.transferTo(dest); LOGGER.info( "上傳成功" ); return "上傳成功" ; } catch (IOException e) { LOGGER.error(e.toString(), e); } return "上傳失敗!" ; } } |
2、創建upload.jsp
文件
只有一個表單,選擇文件,form的enctype
為multipart/form-data
:
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<%@ page contentType="text/html;charset=UTF-8" pageEncoding="UTF-8" %> <!DOCTYPE html> < html > < head > < meta http-equiv = "Content-type" content = "text/html; charset=UTF-8" > < meta http-equiv = "X-UA-Compatible" content = "IE=edge,chrome=1" /> < title >單文件上傳</ title > </ head > < body > < form method = "post" action = "/upload" enctype = "multipart/form-data" > < input type = "file" name = "file" >< br > < input type = "submit" value = "提交" > </ form > </ body > </ html > |
3、通過springboot插件啟動項目,瀏覽器輸入http://localhost:8080/upload
:
選擇文件點擊提交按鈕返回成功信息,我們上傳的文件保存在/Users/itinypocket/workspace/temp
路徑下:
四、多文件上傳
1、創建多文件上傳的jsp頁面,多文件上傳頁面只是比單文件上傳多了file選擇的input而已,multiUpload.jsp
內容如下:
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<%@ page contentType="text/html;charset=UTF-8" pageEncoding="UTF-8" %> <!DOCTYPE html> < html > < head > < meta http-equiv = "Content-type" content = "text/html; charset=UTF-8" > < meta http-equiv = "X-UA-Compatible" content = "IE=edge,chrome=1" /> < title >多文件上傳</ title > </ head > < body > < form method = "post" action = "/multiUpload" enctype = "multipart/form-data" > < input type = "file" name = "file" >< br > < input type = "file" name = "file" >< br > < input type = "file" name = "file" >< br > < input type = "submit" value = "提交" > </ form > </ body > </ html > |
2、在UploadController
里添加多文件上傳的方法
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@GetMapping ( "/multiUpload" ) public String multiUpload() { return "multiUpload" ; } @PostMapping ( "/multiUpload" ) @ResponseBody public String multiUpload(HttpServletRequest request) { List<MultipartFile> files = ((MultipartHttpServletRequest) request).getFiles( "file" ); String filePath = "/Users/itinypocket/workspace/temp/" ; for ( int i = 0 ; i < files.size(); i++) { MultipartFile file = files.get(i); if (file.isEmpty()) { return "上傳第" + (i++) + "個文件失敗" ; } String fileName = file.getOriginalFilename(); File dest = new File(filePath + fileName); try { file.transferTo(dest); LOGGER.info( "第" + (i + 1 ) + "個文件上傳成功" ); } catch (IOException e) { LOGGER.error(e.toString(), e); return "上傳第" + (i++) + "個文件失敗" ; } } return "上傳成功" ; } |
3、重啟服務,瀏覽器輸入http://localhost:8080/multiUpload
:
4、然后選擇要上傳的文件,點擊提交按鈕,得到成功信息:
我們選擇的三個文件已被成功上傳到/Users/itinypocket/workspace/temp
路徑下。
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原文鏈接:https://blog.csdn.net/gnail_oug/article/details/80324120