学步园

package cn.com;</p> <p>import java.io.FileInputStream;<br /> import java.io.FileOutputStream;<br /> import java.io.IOException;<br /> import java.io.InputStream;<br /> import java.io.OutputStream;</p> <p>import sun.misc.BASE64Decoder;<br /> import sun.misc.BASE64Encoder;</p> <p>public class Base64Test<br /> {<br /> public static void main(String[] args)<br /> {<br /> String strImg = GetImageStr();<br /> System.out.println(strImg);<br /> GenerateImage(strImg);<br /> }<br /> //图片转化成base64字符串<br /> public static String GetImageStr()<br /> {//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<br /> String imgFile = "d://test.jpg";//待处理的图片<br /> InputStream in = null;<br /> byte[] data = null;<br /> //读取图片字节数组<br /> try<br /> {<br /> in = new FileInputStream(imgFile);<br /> data = new byte[in.available()];<br /> in.read(data);<br /> in.close();<br /> }<br /> catch (IOException e)<br /> {<br /> e.printStackTrace();<br /> }<br /> //对字节数组Base64编码<br /> BASE64Encoder encoder = new BASE64Encoder();<br /> return encoder.encode(data);//返回Base64编码过的字节数组字符串<br /> }</p> <p> //base64字符串转化成图片<br /> public static boolean GenerateImage(String imgStr)<br /> { //对字节数组字符串进行Base64解码并生成图片<br /> if (imgStr == null) //图像数据为空<br /> return false;<br /> BASE64Decoder decoder = new BASE64Decoder();<br /> try<br /> {<br /> //Base64解码<br /> byte[] b = decoder.decodeBuffer(imgStr);<br /> for(int i=0;i<b.length;++i)<br /> {<br /> if(b[i]<0)<br /> {//调整异常数据<br /> b[i]+=256;<br /> }<br /> }<br /> //生成jpeg图片<br /> String imgFilePath = "d://222.jpg";//新生成的图片<br /> OutputStream out = new FileOutputStream(imgFilePath);<br /> out.write(b);<br /> out.flush();<br /> out.close();<br /> return true;<br /> }<br /> catch (Exception e)<br /> {<br /> return false;<br /> }<br /> }<br /> }</p> <p>