程序喵
MongoDB生成UUID字符串
转换String类型UUID
官方UUID介绍；https://docs.mongodb.com/manual/reference/method/UUID/index.html
Mongodo的UUID默认是返回一个Bson的UUID对象，并非字符串。且UUID需要传递一个（指定一个32字节的十六进制字符串转换为UUID BSON子类型）参数
示例如下
var myuuid = '0123456789abcdeffedcba9876543210' UUID(myuuid)
输出
BinData(4,"ASNFZ4mrze/+3LqYdlQyEA==")
如果想要实现类似于Java生成的UUID那样，需要自定义一个函数方法，借助默认UUID和ObjextID来生成同样的效果。
解决方案如下
参考文章：https://github.com/Bogdan0x400/mongo-csharp-driver/blob/master/uuidhelpers.js
参考文章：https://stackoverflow.com/questions/8244110/get-bindata-uuid-from-mongo-as-string
// 生成常用的UUID，Mongo默认的UUID方法不满足常规需求
function ToGUID(hex) {
var a = hex.substr(6, 2) + hex.substr(4, 2) + hex.substr(2, 2) + hex.substr(0, 2);
var b = hex.substr(10, 2) + hex.substr(8, 2);
var c = hex.substr(14, 2) + hex.substr(12, 2);
var d = hex.substr(16, 16);
hex = a + b + c + d;
var uuid = hex.substr(0, 8) + '-' + hex.substr(8, 4) + '-' + hex.substr(12, 4) + '-' + hex.substr(16, 4) + '-' + hex.substr(20, 12);
return uuid;
}
var id = new BinData(3, ObjectId().str);
print("UUID：", ToGUID(id.hex()));输出：UUID：6b9ed6e7-b877-c76f-79d3-7efd75f77ceb
uuidhelpers.js源码
// 用于在MongoDB shell中解析和显示UUID的Javascript助手功能。
// 这是一个临时解决方案，直到SERVER-3153被实现。
// 要创建对应于各种驱动程序编码的BinData值，请使用：
// var s = "{00112233-4455-6677-8899-aabbccddeeff}";
// var uuid = UUID(s); // new Standard encoding
// var juuid = JUUID(s); // JavaLegacy encoding
// var csuuid = CSUUID(s); // CSharpLegacy encoding
// var pyuuid = PYUUID(s); // PythonLegacy encoding
// 要将各种BinData值转换为可读取的UUID，请使用：
// uuid.toUUID() => 'UUID("00112233-4455-6677-8899-aabbccddeeff")'
// juuid.ToJUUID() => 'JUUID("00112233-4455-6677-8899-aabbccddeeff")'
// csuuid.ToCSUUID() => 'CSUUID("00112233-4455-6677-8899-aabbccddeeff")'
// pyuuid.ToPYUUID() => 'PYUUID("00112233-4455-6677-8899-aabbccddeeff")'
// 使用任何UUID变体，您可以使用toHexUUID使用子类型和十六进制字符串回显原始BinData：
// uuid.toHexUUID() => 'HexData(4, "00112233-4455-6677-8899-aabbccddeeff")'
// juuid.toHexUUID() => 'HexData(3, "77665544-3322-1100-ffee-ddccbbaa9988")'
// csuuid.toHexUUID() => 'HexData(3, "33221100-5544-7766-8899-aabbccddeeff")'
// pyuuid.toHexUUID() => 'HexData(3, "00112233-4455-6677-8899-aabbccddeeff")'
/**
* 十六进制转换Base64
*/
function HexToBase64(hex) {
var base64Digits = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var base64 = "";
var group;
for (var i = 0; i < 30; i += 6) {
group = parseInt(hex.substr(i, 6), 16);
base64 += base64Digits[(group >> 18) & 0x3f];
base64 += base64Digits[(group >> 12) & 0x3f];
base64 += base64Digits[(group >> 6) & 0x3f];
base64 += base64Digits[group & 0x3f];
}
group = parseInt(hex.substr(30, 2), 16);
base64 += base64Digits[(group >> 2) & 0x3f];
base64 += base64Digits[(group << 4) & 0x3f];
base64 += "==";
return base64;
}
/**
* Base64转换十六进制
*/
function Base64ToHex(base64) {
var base64Digits = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
var hexDigits = "0123456789abcdef";
var hex = "";
for (var i = 0; i < 24; ) {
var e1 = base64Digits.indexOf(base64[i++]);
var e2 = base64Digits.indexOf(base64[i++]);
var e3 = base64Digits.indexOf(base64[i++]);
var e4 = base64Digits.indexOf(base64[i++]);
var c1 = (e1 << 2) | (e2 >> 4);
var c2 = ((e2 & 15) << 4) | (e3 >> 2);
var c3 = ((e3 & 3) << 6) | e4;
hex += hexDigits[c1 >> 4];
hex += hexDigits[c1 & 15];
if (e3 != 64) {
hex += hexDigits[c2 >> 4];
hex += hexDigits[c2 & 15];
}
if (e4 != 64) {
hex += hexDigits[c3 >> 4];
hex += hexDigits[c3 & 15];
}
}
return hex;
}
/**
* UUID
*/
function UUID(uuid) {
var hex = uuid.replace(/[{}-]/g, ""); //删除多余的字符
var base64 = HexToBase64(hex);
return new BinData(4, base64); // new subtype 4
}
function JUUID(uuid) {
var hex = uuid.replace(/[{}-]/g, ""); //删除多余的字符
var msb = hex.substr(0, 16);
var lsb = hex.substr(16, 16);
msb = msb.substr(14, 2) + msb.substr(12, 2) + msb.substr(10, 2) + msb.substr(8, 2) + msb.substr(6, 2) + msb.substr(4, 2) + msb.substr(2, 2) + msb.substr(0, 2);
lsb = lsb.substr(14, 2) + lsb.substr(12, 2) + lsb.substr(10, 2) + lsb.substr(8, 2) + lsb.substr(6, 2) + lsb.substr(4, 2) + lsb.substr(2, 2) + lsb.substr(0, 2);
hex = msb + lsb;
var base64 = HexToBase64(hex);
return new BinData(3, base64);
}
function CSUUID(uuid) {
var hex = uuid.replace(/[{}-]/g, ""); //删除多余的字符
var a = hex.substr(6, 2) + hex.substr(4, 2) + hex.substr(2, 2) + hex.substr(0, 2);
var b = hex.substr(10, 2) + hex.substr(8, 2);
var c = hex.substr(14, 2) + hex.substr(12, 2);
var d = hex.substr(16, 16);
hex = a + b + c + d;
var base64 = HexToBase64(hex);
return new BinData(3, base64);
}
function PYUUID(uuid) {
var hex = uuid.replace(/[{}-]/g, ""); //删除多余的字符
var base64 = HexToBase64(hex);
return new BinData(3, base64);
}
BinData.prototype.toUUID = function () {
var hex = Base64ToHex(this.base64()); //不要使用BinData的hex函数，因为它在旧版本的shell中有错误
var uuid = hex.substr(0, 8) + '-' + hex.substr(8, 4) + '-' + hex.substr(12, 4) + '-' + hex.substr(16, 4) + '-' + hex.substr(20, 12);
return 'UUID("' + uuid + '")';
}
BinData.prototype.toJUUID = function () {
var hex = Base64ToHex(this.base64()); //不要使用BinData的hex函数，因为它在旧版本的shell中有错误
var msb = hex.substr(0, 16);
var lsb = hex.substr(16, 16);
msb = msb.substr(14, 2) + msb.substr(12, 2) + msb.substr(10, 2) + msb.substr(8, 2) + msb.substr(6, 2) + msb.substr(4, 2) + msb.substr(2, 2) + msb.substr(0, 2);
lsb = lsb.substr(14, 2) + lsb.substr(12, 2) + lsb.substr(10, 2) + lsb.substr(8, 2) + lsb.substr(6, 2) + lsb.substr(4, 2) + lsb.substr(2, 2) + lsb.substr(0, 2);
hex = msb + lsb;
var uuid = hex.substr(0, 8) + '-' + hex.substr(8, 4) + '-' + hex.substr(12, 4) + '-' + hex.substr(16, 4) + '-' + hex.substr(20, 12);
return 'JUUID("' + uuid + '")';
}
BinData.prototype.toCSUUID = function () {
var hex = Base64ToHex(this.base64()); // 不要使用BinData的十六进制函数，因为它在旧版本的shell中有错误
var a = hex.substr(6, 2) + hex.substr(4, 2) + hex.substr(2, 2) + hex.substr(0, 2);
var b = hex.substr(10, 2) + hex.substr(8, 2);
var c = hex.substr(14, 2) + hex.substr(12, 2);
var d = hex.substr(16, 16);
hex = a + b + c + d;
var uuid = hex.substr(0, 8) + '-' + hex.substr(8, 4) + '-' + hex.substr(12, 4) + '-' + hex.substr(16, 4) + '-' + hex.substr(20, 12);
return 'CSUUID("' + uuid + '")';
}
BinData.prototype.toPYUUID = function () {
var hex = Base64ToHex(this.base64()); // 不要使用BinData的十六进制功能，因为它有错误
var uuid = hex.substr(0, 8) + '-' + hex.substr(8, 4) + '-' + hex.substr(12, 4) + '-' + hex.substr(16, 4) + '-' + hex.substr(20, 12);
return 'PYUUID("' + uuid + '")';
}
BinData.prototype.toHexUUID = function () {
var hex = Base64ToHex(this.base64()); // 不要使用BinData的十六进制功能，因为它有错误
var uuid = hex.substr(0, 8) + '-' + hex.substr(8, 4) + '-' + hex.substr(12, 4) + '-' + hex.substr(16, 4) + '-' + hex.substr(20, 12);
return 'HexData(' + this.subtype() + ', "' + uuid + '")';
}
function TestUUIDHelperFunctions() {
var s = "{00112233-4455-6677-8899-aabbccddeeff}";
var uuid = UUID(s);
var juuid = JUUID(s);
var csuuid = CSUUID(s);
var pyuuid = PYUUID(s);
print(uuid.toUUID());
print(juuid.toJUUID());
print(csuuid.toCSUUID());
print(pyuuid.toPYUUID());
print(uuid.toHexUUID());
print(juuid.toHexUUID());
print(csuuid.toHexUUID());
print(pyuuid.toHexUUID());
}
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