83 lines
2.2 KiB
Java
83 lines
2.2 KiB
Java
package com.zcloud.util;
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import org.springframework.web.multipart.MultipartFile;
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import sun.misc.BASE64Decoder;
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import java.io.*;
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public class BASE64DecodedMultipartFile implements MultipartFile {
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private final byte[] imgContent;
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private final String header;
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public BASE64DecodedMultipartFile(byte[] imgContent, String header) {
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this.imgContent = imgContent;
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this.header = header.split(";")[0];
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}
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@Override
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public String getName() {
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// TODO - implementation depends on your requirements
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return System.currentTimeMillis() + Math.random() + "." + header.split("/")[1];
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}
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@Override
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public String getOriginalFilename() {
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// TODO - implementation depends on your requirements
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return System.currentTimeMillis() + (int)Math.random() * 10000 + "." + header.split("/")[1];
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}
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@Override
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public String getContentType() {
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// TODO - implementation depends on your requirements
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return header.split(":")[1];
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}
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@Override
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public boolean isEmpty() {
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return imgContent == null || imgContent.length == 0;
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}
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@Override
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public long getSize() {
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return imgContent.length;
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}
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@Override
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public byte[] getBytes() throws IOException {
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return imgContent;
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}
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@Override
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public InputStream getInputStream() throws IOException {
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return new ByteArrayInputStream(imgContent);
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}
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@Override
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public void transferTo(File dest) throws IOException, IllegalStateException {
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new FileOutputStream(dest).write(imgContent);
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}
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public static MultipartFile base64ToMultipart(String base64) {
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try {
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String[] baseStrs = base64.split(",");
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BASE64Decoder decoder = new BASE64Decoder();
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byte[] b = new byte[0];
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b = decoder.decodeBuffer(baseStrs[1]);
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for(int i = 0; i < b.length; ++i) {
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if (b[i] < 0) {
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b[i] += 256;
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}
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}
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return new BASE64DecodedMultipartFile(b, baseStrs[0]);
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} catch (IOException e) {
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e.printStackTrace();
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return null;
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}
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}
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}
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