package com.hx.util;
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import org.apache.commons.fileupload.FileItem;
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import org.apache.commons.fileupload.FileItemFactory;
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import org.apache.commons.fileupload.disk.DiskFileItemFactory;
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import org.apache.commons.io.IOUtils;
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import org.springframework.http.MediaType;
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import org.springframework.web.multipart.MultipartFile;
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import org.springframework.web.multipart.commons.CommonsMultipartFile;
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import java.io.*;
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public class MultipartFileUtil {
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/**文件转化
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* File to MultipartFile
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* @param file
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* @return
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*/
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public static MultipartFile getMultipartFile(File file) {
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FileItem item = new DiskFileItemFactory().createItem("file"
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, MediaType.MULTIPART_FORM_DATA_VALUE
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, true
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, file.getName());
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try (InputStream input = new FileInputStream(file);
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OutputStream os = item.getOutputStream()) {
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// 流转移
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IOUtils.copy(input, os);
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} catch (Exception e) {
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throw new IllegalArgumentException("Invalid file: " + e, e);
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}
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return new CommonsMultipartFile(item);
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}
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}
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