SpringBoot上传文件并配置本地资源映射来访问文件的实例代码
作者：weixin_44953227
这篇文章主要介绍了SpringBoot上传文件并配置本地资源映射来访问文件的实例代码,本文给大家介绍的非常详细，对大家的学习或工作具有一定的参考借鉴价值，需要的朋友可以参考下
1.准备工作
1、新建一个SpringBoot项目加上web依赖, 所有依赖
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.thymeleaf</groupId> <artifactId>thymeleaf-spring5</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency>
2、application.properties
# 上传文件总的最大值 spring.servlet.multipart.max-request-size=10MB #spring.servlet.multipart.max-request-size=10KB # 单个文件的最大值 spring.servlet.multipart.max-file-size=10MB #spring.servlet.multipart.max-file-size=10KB # 文件上传路径, 当前项目根目录下的 uploadFile 目录 pro.uploadPath=uploadFile
3、新建文件上传的静态文件 index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>文件上传</title>
</head>
<body>
<h1>文件上传</h1>
<form method="post" action="/file/upload" enctype="multipart/form-data">
<input type="file" name="file"><br>
<input type="submit" value="提交">
</form>
</body>
</html>
2. 配置本地资源映射路径 addResourceHandlers
package com.pro.conf;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
@Configuration
public class WebMvcConf implements WebMvcConfigurer {
@Value("${pro.uploadPath}")
private String uploadPath;
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler(uploadPath + "/**") // 添加访问路径
// file: 当前项目根目录, 映射到真实的路径下的 uploadPath(变量)目录下
.addResourceLocations("file:" + uploadPath + "/");
}
}
3.上传代码
package com.pro.controller;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.util.ResourceUtils;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import javax.servlet.http.HttpServletRequest;
import java.io.*;
import java.text.SimpleDateFormat;
import java.util.*;
@RestController
public class UploadController {
@Value("${pro.uploadPath}")
private String uploadPath;
/**
* 获取文件路径
* @param request 请求体
* @param fileName 文件名称
* @return 文件路径
*/
public String getUploadPath(HttpServletRequest request, String fileName) {
return request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + "/" + uploadPath + "/" + fileName;
}
// 文件上传, 上传到当前项目根目录下的 uploadFile 目录
@RequestMapping("/file/upload")
public Object upload(@RequestParam("file") MultipartFile multipartFile, HttpServletRequest request) {
Map<String, Object> map = new HashMap();
map.put("msg", "上传成功");
if (multipartFile.isEmpty()) {
map.put("msg", "空文件");
return map;
}
// 获取文件名
String fileName = multipartFile.getOriginalFilename();
if ("".equals(fileName)) {
map.put("msg", "文件名不能为空");
return map;
}
System.out.println("上传文件原始的名字: " + fileName);
// 使用uuid生成新文件名
String newFileName = UUID.randomUUID().toString().replaceAll("-", "") + fileName.substring(fileName.lastIndexOf("."), fileName.length());
System.out.println("保存的文件的新名字: " + newFileName);
// 获取年月日的日期格式
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
String format = simpleDateFormat.format(new Date());
// 生成以日期分割的文件路径
File readPath = new File(uploadPath + File.separator + format);
System.out.println("存放的文件夹: " + readPath);
System.out.println("存放文件的绝对路径: " + readPath.getAbsolutePath());
// 判断文件夹是否存在
if (!readPath.isDirectory()) {
// 创建文件夹
readPath.mkdirs();
}
// 文件真实的保存路径
File file = new File(readPath.getAbsolutePath() + File.separator + newFileName);
try {
multipartFile.transferTo(file);
// 获取存储路径
String filePath = getUploadPath(request, format + "/" + newFileName);
map.put("path", filePath);
} catch (IOException e) {
e.printStackTrace();
map.put("msg", "上传失败");
}
return map;
}
}
到此这篇关于SpringBoot上传文件并配置本地资源映射来访问文件的文章就介绍到这了,更多相关SpringBoot上传文件资源映射内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！