python、java之间base64转换（字符串、二进制流）

浅浅的花香味﹌ 2022-02-23 00:44 1133阅读 0赞

python的base64转换：

import base64
    
    
    def strToBase64(s):
        '''
        将字符串转换为base64字符串
        :param s:
        :return:
        '''
        strEncode = base64.b64encode(s.encode('utf8'))
        return str(strEncode, encoding='utf8')
    
    def base64ToStr(s):
        '''
        将base64字符串转换为字符串
        :param s:
        :return:
        '''
        strDecode = base64.b64decode(bytes(s, encoding="utf8"))
        return str(strDecode, encoding='utf8')
    
    
    if __name__ == '__main__':
        s = "python:字符串转换成字节的三种方式"
        
        print(strToBase64(s))
        
        
        s2 = 'cHl0aG9uOuWtl+espuS4sui9rOaNouaIkOWtl+iKgueahOS4ieenjeaWueW8jw=='
        print(base64ToStr(s2))

java的base64的转换：（java8）

package com.sample.test;
    
    import java.io.UnsupportedEncodingException;
    import java.util.Base64;
    
    public class Test {
        /**
         * 将字符串转换为base64字符串
         * @param str
         * @return
         */
        public static String strToBase64(String str) {
            byte[] bytes;
            try {
                bytes = Base64.getEncoder().encode(str.getBytes("utf-8"));
                return new String(bytes, "utf-8");
            } catch (UnsupportedEncodingException e) {
                return str;
            }
        }
    
        /**
         * 将base64字符串转换为字符串
         * @param str
         * @return
         */
        public static String base64ToStr(String str) {
            try {
                return new String(Base64.getDecoder().decode(str), "utf-8");
            } catch (UnsupportedEncodingException e) {
                return str;
            }
        }
    
        public static void main(String[] args) throws UnsupportedEncodingException {
            String s = "cHl0aG9uOuWtl+espuS4sui9rOaNouaIkOWtl+iKgueahOS4ieenjeaWueW8jw==";
            String r = base64ToStr(s);
    
            System.out.println(r);
    
            System.out.println(strToBase64(r));
        }
    
    
    }