com.github.mengweijin.quickboot.framework.util.Base64Util Maven / Gradle / Ivy
package com.github.mengweijin.quickboot.framework.util;
import lombok.extern.slf4j.Slf4j;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
import java.io.*;
import java.nio.charset.StandardCharsets;
/**
* @author Meng Wei Jin
* @description
**/
@Slf4j
public class Base64Util {
private static BASE64Encoder base64Encoder = new BASE64Encoder();
private static BASE64Decoder base64Decoder = new BASE64Decoder();
/**
* 编码字符串
* @param str
* @return
*/
public static String encode(String str){
return base64Encoder.encode(str.getBytes(StandardCharsets.UTF_8));
}
/**
* 解码字符串
* @param str
* @return
*/
public static String decode(String str) throws IOException {
return new String(base64Decoder.decodeBuffer(str), StandardCharsets.UTF_8);
}
/**
* 编码文件
* 注意：Base64位加密文件可能在服务器端将+号自动处理为“ ”空字符串，
* 所以如果发生这种情况，解码时需要替换回来。
* @param file
* @return
*/
public static String encode(File file) throws IOException {
try(
InputStream in = new FileInputStream(file);
ByteArrayOutputStream out = new ByteArrayOutputStream()
){
StringBuilder sb = new StringBuilder();
byte[] buffer = new byte[1024];
int len;
while ((len = in.read(buffer)) != -1) {
out.write(buffer, 0, len);
sb.append(base64Encoder.encode(out.toByteArray()));
out.reset();
}
return sb.toString();
}catch (IOException e){
log.error(e.getMessage(), e);
throw new IOException(e);
}
}
/**
* 解码到文件
* @param base64Code
* @param file
* @return
*/
public static void decode(String base64Code, File file) throws IOException {
try(FileOutputStream out = new FileOutputStream(file)){
byte[] decoderBytes = base64Decoder.decodeBuffer(base64Code);
out.write(decoderBytes);
} catch (IOException e){
log.error(e.getMessage(), e);
throw new IOException(e);
}
}
}