文章来源
https://www.cnblogs.com/nongzihong/p/13370606.html
MultipartFile转化为byte数组
byte[] imgBytes = multipartFile.getBytes();
byte数组转化为MultipartFile
转换中我们会使用MockMultipartFile这个类,所有要引用相应包。
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>RELEASE</version>
</dependency>
byte[] testFile = new byte[1024];
InputStream inputStream = new ByteArrayInputStream(testFile);
MultipartFile file = new MockMultipartFile(ContentType.APPLICATION_OCTET_STREAM.toString(), inputStream);