zoukankan      html  css  js  c++  java
  • BASE64加密 解密

        public static void main(String[] args) {  
            String base64bian =encryptBASE64("d:/项目管理知识体系(第五版)1.pdf");//文件路径
            decryptBASE64(base64bian, "D:/zhouzhiwei.pdf"); //base64编码 输出文件路径及后缀名
            System.out.println(base64bian);  
            }  
             
            
        
        
            /** * BASE64加密 * 
            * @param key 
            * @return
            * @throws
            * Exception 
            */
            @SuppressWarnings("restriction")
            public static String encryptBASE64(String imgFilePath) {// 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  
            byte[] data = null;  
            // 读取图片字节数组  
            try {  
            InputStream in = new FileInputStream(imgFilePath);  
            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解密 * 
            * @param key 
            * @return
            * @throws
            * Exception 
            */
            @SuppressWarnings("restriction")
            public static boolean decryptBASE64(String imgStr, String imgFilePath) {// 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[] bytes = decoder.decodeBuffer(imgStr);  
            for (int i = 0; i < bytes.length; ++i) {  
            if (bytes[i] < 0) {// 调整异常数据  
            bytes[i] += 256;  
            }  
            }  
            // 生成文件
            OutputStream out = new FileOutputStream(imgFilePath);  
            out.write(bytes);  
            out.flush();  
            out.close();  
            return true;  
            } catch (Exception e) {  
            return false;  
            }  
            }  
  • 相关阅读:
    Leetcode#179 Largest Number
    Leetcode#155 Min Stack
    Leetcode#14 Longest Common Prefix
    Leetcode#101 Symmetric Tree
    Leetcode#172 Fractorial Trailing Zero
    Leetcode#28 Implement strStr()
    Leetcode#46 Permutations
    Leetcode#48 Rotate Image
    Leetcode#134 Gas station
    Leetcode#137 Single Number II
  • 原文地址:https://www.cnblogs.com/yy123/p/4281904.html
Copyright © 2011-2022 走看看