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本篇文章主要介绍了java 后台将base64字符串保存为图片的方法,小编觉得挺不错的,现在分享给大家,也给大家做个参考。一起跟随小编过来看看吧
本文介绍了java 后台将base64字符串保存为图片的方法,分享给大家,具体如下:
直接上代码:
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 Base64Test { public static void main(String[] args) { String strImg = GetImageStr(); System.out.println(strImg); GenerateImage(strImg); } //图片转化成base64字符串 public static String GetImageStr() {//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 = "D:\\tupian\\a.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 } //base64字符串转化成图片 public static boolean GenerateImage(String imgStr) { //对字节数组字符串进行Base64解码并生成图片 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:\\tupian\\new.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; } } }
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