12/26

package com.example.testDong;

import java.io.*;
import java.util.Base64;

public class BaseConvert {
/**
* 图片转化成base64字符串
* @param imgPath
* @return
*/
public static String GetImageStr(String imgPath) {// 将图片文件转化为字节数组字符串，并对其进行Base64编码处理
String imgFile = imgPath;// 待处理的图片
InputStream in = null;
byte[] data = null;
String encode = null; // 返回Base64编码过的字节数组字符串
// 对字节数组Base64编码
Base64.Encoder encoder = Base64.getEncoder();
try {
// 读取图片字节数组
in = new FileInputStream(imgFile);
data = new byte[in.available()];
in.read(data);
encode = encoder.encodeToString(data);
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
in.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return encode;
}
@SuppressWarnings("finally")
public static boolean GenerateImage(String imgData, String imgFilePath) throws IOException { // 对字节数组字符串进行Base64解码并生成图片
if (imgData == null) // 图像数据为空
return false;

Base64.Decoder decoder = Base64.getDecoder();

// BASE64Decoder decoder = new BASE64Decoder();
OutputStream out = null;
try {
out = new FileOutputStream(imgFilePath);
// Base64解码
byte[] b = decoder.decode(imgData);
for (int i = 0; i < b.length; ++i) {
if (b[i] < 0) {// 调整异常数据
b[i] += 256;
}
}
out.write(b);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
out.flush();
out.close();
return true;
}
}
}