Spring Boot - Web 应用开发 - 文件上传

<form method="post" enctype="multipart/form-data" action="/file/upload">
文件：<input type="file" name="file">
<input type="button" value="上传">
</form>

@Controller
@RequestMapping("/file")
public class FileController {
private static Logger logger = LoggerFactory.getLogger(FileController.class);

@RequestMapping("/upload")
public String upload(@RequestParam("file") MultipartFile file) {
if (file.isEmpty()) {
return "文件为空";
}

// 获取文件名
String fileName = file.getName();
logger.info("上传文件名为：" + fileName);

// 获取文件的后缀名
String suffixName = fileName.substring(fileName.lastIndexOf("."));
logger.info("上传的后缀名为：" + suffixName);

// 文件上传路径
String filePath = "D:/tempFile";

// 解决中文问题，Linux 下中文路径，图片显示问题
// fileName = UUID.randomUUID() + suffixName;

File dest = new File(filePath + fileName);

// 检查是否存在目录
if (!dest.getParentFile().exists()) {
dest.getParentFile().mkdirs();
}

try {
file.transferTo(dest);
return "上传成功";
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}

return "上传失败";
}

}

spring.http.multipart.enabled=true
spring.http.multipart.file-size-threshold=0
spring.http.multipart.location=
spring.http.multipart.max-file-size=1MB
spring.http.multipart.max-request-size=10Mb