//Java 部分
package com.zht;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class Base64 {
public static void main(String[] args) {
String strImg = GetImageStr();
System.out.println(strImg);
GenerateImage(strImg);
}
//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
public static String GetImageStr() {
String imgFile = "d:\\1.jpg";//待处理的图片
InputStream in = null;
byte[] data = null;
//读取图片字节数组
try {
in = new FileInputStream(imgFile);
data = new byte[in.available()];
in.read(data);
in.close();
} catch (IOException e) {
e.printStackTrace();
}
//对字节数组Base64编码
BASE64Encoder encoder = new BASE64Encoder();
return encoder.encode(data);//返回Base64编码过的字节数组字符串
}
//对字节数组字符串进行Base64解码并生成图片
public static boolean GenerateImage(String imgStr) {
if (imgStr == null) //图像数据为空
return false;
BASE64Decoder decoder = new BASE64Decoder();
try {
//Base64解码
byte[] b = decoder.decodeBuffer(imgStr);
for (int i = 0; i < b.length; ++i) {
if (b[i] < 0) {//调整异常数据
b[i] += 256;
}
}
//生成jpeg图片
String imgFilePath = "d:\\2.jpg";//新生成的图片
OutputStream out = new FileOutputStream(imgFilePath);
out.write(b);
out.flush();
out.close();
return true;
} catch (Exception e) {
return false;
}
}
}
//Html 页面部分
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
</head>
<body>
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