Java中将File转化为MultipartFile的方法

话不多说直接上代码，简单明了

import java.io.File;
import java.io.FileInputStream;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.mock.web.MockMultipartFile;
import org.apache.http.entity.ContentType;


File pdfFile = new File("D://test.pdf");
FileInputStream fileInputStream = new FileInputStream(pdfFile);
MultipartFile multipartFile = new MockMultipartFile(pdfFile.getName(), pdfFile.getName(),
					ContentType.APPLICATION_OCTET_STREAM.toString(), fileInputStream);

不少网友反馈说要下jar包的依赖，如下

jar包依赖：

<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpcore</artifactId>
    <version>4.4.9</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-test</artifactId>
    <version>5.1.6.RELEASE</version>
</dependency>