base64 http://192.168.1.103:8520/
package com.god.nice.service;
import org.springframework.web.multipart.MultipartFile;
import sun.misc.BASE64Decoder;
import java.io.*;
/**
* Created by Administrator on 2020/11/25 0025.
* 调用方法:BASE64DecodedMultipartFile.base64ToMultipart
* ("传入前端传来的base64字符串")。最终就会给我们返回一个MultipartFile类型的文件。
*/
public class BaseLiuFile implements MultipartFile {
private final byte[] imgContent;
private final String header;
public BaseLiuFile(byte[] imgContent, String header) {
this.imgContent = imgContent;
this.header = header.split(";")[0];
}
@Override
public String getName() {
return System.currentTimeMillis() + Math.random() + "." + header.split("/")[1];
}
@Override
public String getOriginalFilename() {
return System.currentTimeMillis() + (int) Math.random() * 10000 + "." + header.split("/")[1];
}
@Override
public String getContentType() {
return header.split(":")[1];
}
@Override
public boolean isEmpty() {
return imgContent == null || imgContent.length == 0;
}
@Override
public long getSize() {
return imgContent.length;
}
@Override
public byte[] getBytes() throws IOException {
return imgContent;
}
@Override
public InputStream getInputStream() throws IOException {
return new ByteArrayInputStream(imgContent);
}
@Override
public void transferTo(File dest) throws IOException, IllegalStateException {
new FileOutputStream(dest).write(imgContent);
}
public static MultipartFile baseLiuToMultipart(String baseLiu) {
try {
String[] baseStrs = baseLiu.split(",");
BASE64Decoder decoder = new BASE64Decoder();
byte[] b = new byte[0];
b = decoder.decodeBuffer(baseStrs[1]);
for (int i = 0; i < b.length; ++i) {
if (b[i] < 0) {
b[i] += 256;
}
}
return new BaseLiuFile(b, baseStrs[0]);
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
}