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ImageAnd64Binary.java
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import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
import java.io.*;
/**
* DateTime: 2016/9/19 14:07
* 功能：生成64位的图片
* 思路：
*/
public class ImageAnd64Binary {
//测试
public static void main(String[] args) {
String imgSrcPath="G:/Demo/2.jpg"; //生成64位编码的图片路径
String imgCreatePath="G:\\Demo/2bak.jpg";
imgCreatePath=imgSrcPath.replaceAll("\\\\","/");
System.out.println(imgCreatePath);
String strImg=getImageStr(imgSrcPath);
System.out.println(strImg);
generateImage(imgSrcPath,imgCreatePath);
}
/**
* 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
* @param imgSrcPath 生成64编码的图片的路径
* @return
*/
public static String getImageStr(String imgSrcPath){
InputStream in=null;
byte[] data=null;
//读取图片字节数组
try {
in=new FileInputStream(imgSrcPath);
data=new byte[in.available()];
in.read(data);
in.close();
} catch ( FileNotFoundException e ) {
e.printStackTrace();
} catch ( IOException e ) {
e.printStackTrace();
}
//对字节数组Base64编码
BASE64Encoder encoder=new BASE64Encoder();
//返回Base64编码过的字节数组字符串
return encoder.encode(data);
}
/**
* 对字节数组字符串进行Base64解码并生成图片
* @param imgStr 转换为图片的字符串
* @param imgCreatePath 将64编码生成图片的路径
* @return
*/
public static boolean generateImage(String imgStr,String imgCreatePath){
if(null==imgStr){ //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;
}
}
OutputStream out=new FileOutputStream(imgCreatePath);
out.write(b);
out.flush();
out.close();
return true;
} catch ( IOException e ) {
e.printStackTrace();
return false;
}
}
}