Java 图片、文件 Base64 互转
package com.thoth.his.base.util;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Base64;
public class ImageUtil {
public void FileToBase64(String filePath) throws IOException {
FileInputStream inputStream = null;
try {
Base64.Encoder encoder = Base64.getEncoder();
inputStream = new FileInputStream(filePath);
int available = inputStream.available();
byte[] bytes = new byte[available];
inputStream.read(bytes);
String base64Str = encoder.encodeToString(bytes);
System.out.println(base64Str);
} catch (Exception e) {
e.printStackTrace();
} finally {
inputStream.close();
}
}
public void Base64ToFile(String base64Str, String saveFilePath) throws IOException {
FileOutputStream outputStream = null;
try {
Base64.Decoder decoder = Base64.getDecoder();
byte[] bytes = decoder.decode(base64Str);
outputStream = new FileOutputStream(saveFilePath);
outputStream.write(bytes);
} catch (Exception e) {
e.printStackTrace();
} finally {
outputStream.close();
}
}
}