Base64加密解密

一、Base64加密解密

一、前端加密

一、方法 一

const that = this;
const copyruleForm = JSON.parse(JSON.stringify(that.ruleForm));
const c_clus_content = window.btoa(unescape(encodeURIComponent(this.ruleForm.c_clus_content)));
const c_clus_econtent = window.btoa(unescape(encodeURIComponent(this.ruleForm.c_clus_econtent)))
注：unescape()方法已经被弃用，不建议使用

二、方法 二

注：深拷贝处理

const that = this;
# 深拷贝
const copyruleForm = JSON.parse(JSON.stringify(that.ruleForm));
const c_clus_content = btoa(encodeURI(that.ruleForm.c_clus_content));
const c_clus_econtent = btoa(encodeURI(that.ruleForm.c_clus_econtent));

二、后端解密

一、方法 一

    public ProdCompDuty update(ProdCompDutyDTO prodCompDutyDTO) {
        ProdCompDuty field = prodCompDutyDTO.getField();
        //Base64解密 责任中文内容和责任英文内容
        if (StringUtil.isNotBlank(prodCompDutyDTO.getIsBase64()) && "true".equals(prodCompDutyDTO.getIsBase64())) {
            byte[] bytes1 = Base64.getDecoder().decode(field.getC_clus_content());
            String c_clus_content = new String(bytes1);
            field.setC_clus_content(c_clus_content);
            byte[] bytes2 = Base64.getDecoder().decode(field.getC_clus_econtent());
            String c_clus_econtent = new String(bytes2);
            field.setC_clus_econtent(c_clus_econtent);
        }
            ProdCompDutyDao.updateOne_odb_duty_no(field);
            return field;
    }

二、方法 二

	public ProdCompDuty update(ProdCompDutyDTO prodCompDutyDTO) {
         ProdCompDuty field = prodCompDutyDTO.getField();
        //Base64解密 责任中文内容和责任英文内容
        if (StringUtil.isNotBlank(prodCompDutyDTO.getIsBase64()) && "true".equals(prodCompDutyDTO.getIsBase64())) {
            try {
                String c_clus_content = URLDecoder.decode(new String(Base64.getDecoder().decode(field.getC_clus_content()), "utf-8"), "utf-8");
                String c_clus_econtent = URLDecoder.decode(new String(Base64.getDecoder().decode(field.getC_clus_econtent()), "utf-8"), "utf-8");
                field.setC_clus_content(c_clus_content);
                field.setC_clus_econtent(c_clus_econtent);
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }
        }
        ProdCompDutyDao.updateOne_odb_duty_no(field);
        return field;
    }

三、前端加密解密

一、window浏览器环境

1、window.btoa() 将ascii字符串或二进制数据转换成 base64 编码过的字符串

2、window.atob() 函数用来解码被 base64 编码过的数据

# 方法名就是 btoa和 atob ，具体语法如下：
window.btoa('hellow World')  // 编码   aGVsbG93IFdvcmxk
window.atob('aGVsbG93IFdvcmxk')  // 解码 hellow World

注意：不适用于带中文解密，即window.btoa 与 window.atob 不支持中文，且 IE9 以下不支持atob、btoa

解决：btoa 不支持 Unicode 字符编码的问题编码时，先用 encodeURIComponent 对字符串进行编码，再进行 btoa 进行 Base64 编码解码时，先用 atob 对 Base64 编码的串进行解码，再用 decodeURIComponent 对字符串进行解码

var str = "hello,中国";
var encoded_str = btoa(encodeURIComponent(str));
var decoded_str = decodeURIComponent(atob(encoded_str));
console.log(encoded_str); // aGVsbG8lMkMlRTQlQjglQUQlRTUlOUIlQkQ=
console.log(decoded_str); // hello,中国在这里插入代码片

二、封装base64

/*
 *  base64.js
 */
;(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined'
        ? module.exports = factory(global)
        : typeof define === 'function' && define.amd
        ? define(factory) : factory(global)
}((
    typeof self !== 'undefined' ? self
        : typeof window !== 'undefined' ? window
        : typeof global !== 'undefined' ? global
: this
), function(global) {
    'use strict';
    // existing version for noConflict()
    global = global || {};
    var _Base64 = global.Base64;
    var version = "2.5.2";
    // if Node.js and NOT React Native, we use Buffer
    var buffer;
    if (typeof module !== 'undefined' && module.exports) {
        try {
            buffer = eval("require('buffer').Buffer");
        } catch (err) {
            buffer = undefined;
        }
    }
    // constants
    var b64chars
        = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
    var b64tab = function(bin) {
        var t = {};
        for (var i = 0, l = bin.length; i >> 6))
                                + fromCharCode(0x80 | (cc & 0x3f)))
                : (fromCharCode(0xe0 | ((cc >>> 12) & 0x0f))
                    + fromCharCode(0x80 | ((cc >>>  6) & 0x3f))
                    + fromCharCode(0x80 | ( cc         & 0x3f)));
        } else {
            var cc = 0x10000
                + (c.charCodeAt(0) - 0xD800) * 0x400
                + (c.charCodeAt(1) - 0xDC00);
            return (fromCharCode(0xf0 | ((cc >>> 18) & 0x07))
                    + fromCharCode(0x80 | ((cc >>> 12) & 0x3f))
                    + fromCharCode(0x80 | ((cc >>>  6) & 0x3f))
                    + fromCharCode(0x80 | ( cc         & 0x3f)));
        }
    };
    var re_utob = /[\uD800-\uDBFF][\uDC00-\uDFFFF]|[^\x00-\x7F]/g;
    var utob = function(u) {
        return u.replace(re_utob, cb_utob);
    };
    var cb_encode = function(ccc) {
        var padlen = [0, 2, 1][ccc.length % 3],
        ord = ccc.charCodeAt(0)  1 ? ccc.charCodeAt(1) : 0)  2 ? ccc.charCodeAt(2) : 0)),
        chars = [
            b64chars.charAt( ord >>> 18),
            b64chars.charAt((ord >>> 12) & 63),
            padlen >= 2 ? '=' : b64chars.charAt((ord >>> 6) & 63),
            padlen >= 1 ? '=' : b64chars.charAt(ord & 63)
        ];
        return chars.join('');
    };
    var btoa = global.btoa ? function(b) {
        return global.btoa(b);
    } : function(b) {
        return b.replace(/[\s\S]{1,3}/g, cb_encode);
    };
    var _encode = function(u) {
        var isUint8Array = Object.prototype.toString.call(u) === '[object Uint8Array]';
        return isUint8Array ? u.toString('base64')
            : btoa(utob(String(u)));
    }
    var encode = function(u, urisafe) {
        return !urisafe
            ? _encode(u)
            : _encode(String(u)).replace(/[+\/]/g, function(m0) {
                return m0 == '+' ? '-' : '_';
            }).replace(/=/g, '');
    };
    var encodeURI = function(u) { return encode(u, true) };
    // decoder stuff
    var re_btou = /[\xC0-\xDF][\x80-\xBF]|[\xE0-\xEF][\x80-\xBF]{2}|[\xF0-\xF7][\x80-\xBF]{3}/g;
    var cb_btou = function(cccc) {
        switch(cccc.length) {
        case 4:
            var cp = ((0x07 & cccc.charCodeAt(0))  10) + 0xD800)
                    + fromCharCode((offset & 0x3FF) + 0xDC00));
        case 3:
            return fromCharCode(
                ((0x0f & cccc.charCodeAt(0)) 
        return b.replace(re_btou, cb_btou);
    };
    var cb_decode = function(cccc) {
        var len = cccc.length,
        padlen = len % 4,
        n = (len  0 ? b64tab[cccc.charAt(0)] > 16),
            fromCharCode((n >>>  8) & 0xff),
            fromCharCode( n         & 0xff)
        ];
        chars.length -= [0, 0, 2, 1][padlen];
        return chars.join('');
    };
    var _atob = global.atob ? function(a) {
        return global.atob(a);
    } : function(a){
        return a.replace(/\S{1,4}/g, cb_decode);
    };
    var atob = function(a) {
        return _atob(String(a).replace(/[^A-Za-z0-9\+\/]/g, ''));
    };
    var _decode = buffer ?
        buffer.from && Uint8Array && buffer.from !== Uint8Array.from
        ? function(a) {
            return (a.constructor === buffer.constructor
                    ? a : buffer.from(a, 'base64')).toString();
        }
        : function(a) {
            return (a.constructor === buffer.constructor
                    ? a : new buffer(a, 'base64')).toString();
        }
        : function(a) { return btou(_atob(a)) };
    var decode = function(a){
        return _decode(
            String(a).replace(/[-_]/g, function(m0) { return m0 == '-' ? '+' : '/' })
                .replace(/[^A-Za-z0-9\+\/]/g, '')
        );
    };
    var noConflict = function() {
        var Base64 = global.Base64;
        global.Base64 = _Base64;
        return Base64;
    };
    // export Base64
    global.Base64 = {
        VERSION: version,
        atob: atob,
        btoa: btoa,
        fromBase64: decode,
        toBase64: encode,
        utob: utob,
        encode: encode,
        encodeURI: encodeURI,
        btou: btou,
        decode: decode,
        noConflict: noConflict,
        __buffer__: buffer
    };
    // if ES5 is available, make Base64.extendString() available
    if (typeof Object.defineProperty === 'function') {
        var noEnum = function(v){
            return {value:v,enumerable:false,writable:true,configurable:true};
        };
        global.Base64.extendString = function () {
            Object.defineProperty(
                String.prototype, 'fromBase64', noEnum(function () {
                    return decode(this)
                }));
            Object.defineProperty(
                String.prototype, 'toBase64', noEnum(function (urisafe) {
                    return encode(this, urisafe)
                }));
            Object.defineProperty(
                String.prototype, 'toBase64URI', noEnum(function () {
                    return encode(this, true)
                }));
        };
    }
    //
    // export Base64 to the namespace
    //
    if (global['Meteor']) { // Meteor.js
        Base64 = global.Base64;
    }
    // module.exports and AMD are mutually exclusive.
    // module.exports has precedence.
    if (typeof module !== 'undefined' && module.exports) {
        module.exports.Base64 = global.Base64;
    }
    else if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define([], function(){ return global.Base64 });
    }
    // that's it!
    return {Base64: global.Base64}
}));

方法使用

1、引用
import {Base64} from './utils/base64'
2、使用
Base64.encode('hellow world'); // 编码  aGVsbG93IFdvcmxk
Base64.decode('aGVsbG93IFdvcmxk'); // 解码  hellow World

三、开源的base64.js

1、下载依赖
$ npm install --save js-base64
2、使用方法：
import {Base64} from 'js-base64'
Base64.encode('hellow world'); // 编码  aGVsbG93IFdvcmxk
Base64.decode('aGVsbG93IFdvcmxk'); // 解码  hellow World

四、后端Base64工具类

一、base64加密解密（apache）

import org.apache.commons.net.util.Base64;
import java.io.UnsupportedEncodingException;
@SuppressWarnings("restriction")
public class BaseEncodeAndDecode {  
	//加密  
    public static String getBase64(String str){  
        byte[] b=null;  
        String s=null;  
        try {  
            b = str.getBytes("utf-8");  
        } catch (UnsupportedEncodingException e) {  
            e.printStackTrace();  
        }  
        if(b!=null){  
            s=Base64.encodeBase64String(b);
        }
        return s;  
    }  
    // 解密    
    public static String getFromBase64(String s) {    
        byte[] b = null;    
        String result = null;    
        if (s != null) {    
            try {
                b = Base64.decodeBase64(s);
                result = new String(b, "utf-8");    
            } catch (Exception e) {    
                e.printStackTrace();    
            }    
        }    
        return result;    
    } 
} 

二、base64加密解密（util）

import java.util.Base64;
public class BaseEncodeAndDecode {  
	//加密
	private static String BaseEncodeAndDecode(String str) {
		//String encodedString = Base64.getEncoder().encodeToString(str.getBytes());
		String encodedString = Base64.getEncoder().withoutPadding().encodeToString(str.getBytes());
		return encodedString;
	}
	//解密
	private static String getFromBase64(String str) {
		byte[] decodedBytes = Base64.getDecoder().decode(str);
		String decodedString = new String(decodedBytes);
		return decodedString;
	}
}