multipartFile转化为file

multipartFile可以转化为file的几种方式。第一种方式是使用MultipartFile的transferTo()方法，将multipartFile转化为File对象。代码如下：

public File transferToFile(MultipartFile multipartFile) {
    File file = null;
    try {
        String originalFilename = multipartFile.getOriginalFilename();
        String[] filename = originalFilename.split("\\.");
        file=File.createTempFile(filename<span class="em">1</span><span class="em">2</span><span class="em">3</span><span class="em">4</span>