代码结构:
Controller层
package com.yqifei.upload.controller;import io.swagger.annotations.Api;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;/*** @ClassName UploadController* @Description TODO* @Author jiangyuntao* @Data 2023/3/7 23:52* @Version 1.0* @Email yuntaojiang@foxmail.com*/@RestController
@CrossOrigin
@RequestMapping("/posts")
@Api(tags = "文件上传控制器")
public class UploadController {/*
http://localhost:8088/swagger-ui.html#
*/@PostMapping(value="/upload")@CrossOriginpublic List fileload(@RequestParam(value = "file") MultipartFile[] file, HttpServletRequest request) throws IOException {System.out.println(file.length);String savaLaction="d:/data/";String fileSaveName;List imageUri = new ArrayList<>();for (MultipartFile multipartFile:file) {System.out.println("文件"+multipartFile.getOriginalFilename());fileSaveName = UUID.randomUUID().toString()+multipartFile.getOriginalFilename();multipartFile.transferTo(new File(savaLaction,fileSaveName));String res = request.getScheme()+"://"+request.getServerName()+":"+"8080"+savaLaction+"/"+fileSaveName;imageUri.add(res);}System.out.println(imageUri);return imageUri;}}
跨域拦截器配置
package com.yqifei.upload.utils;import org.springframework.context.annotation.Configuration;
import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@WebFilter(filterName = "CorsFilter")
@Configuration
public class CorsFilter implements Filter {@Overridepublic void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {HttpServletResponse response = (HttpServletResponse) res;response.setHeader("Access-Control-Allow-Origin","*");response.setHeader("Access-Control-Allow-Credentials", "true");response.setHeader("Access-Control-Allow-Methods", "POST, GET, PATCH, DELETE, PUT");response.setHeader("Access-Control-Max-Age", "3600");response.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");chain.doFilter(req, res);}
}
application.properties
配置
# 应用名称
spring.application.name=upload
# 应用服务 WEB 访问端口
server.port=8088spring.web.resources.static-locations=file:d:/data/spring.servlet.multipart.max-request-size=50MB
spring.servlet.multipart.max-file-size=50MB
前端页面
Multiple File Upload Multiple File Upload
图片返回值地址:
效果展示
获取图片的url并且读取图片
修改tomcat的server.xml文件
加上下面这句
// docBase代表文件路径,path是浏览器访问时的路径。
// 若自己创建的文件夹在tomcat目录的webapps中,不同之处: docBase直接写文件夹文字即可(注意:没有/) 例如 docBase ="home/springbootVue/files"