uuid

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I have a postgresql 9 installation on windows, which doesn't have built in uuid generator. There is OSSD package, which can be bound to postgresql as uuid generator, but it's for *nix only (I think). How can I generate uuid in windows postgresql? 回答1: The one-click installer from EnterpriseDB does have it. The DLL is called "uuid-ossp.dll" and resides in "(Postgres' installation directory)\lib" and the installation SQL script is called "uuid-ossp.sql" and resides in "(Postgres' installation directory)\share\contrib". You have to

I need to get the unique device id to populate unique user id in the database. I have used the following code to get that. NSString *strApplicationUUID= [[[UIDevice currentDevice] identifierForVendor] UUIDString]; But when I am reinstalling the app, the UUID is changing all the time. But as far as I know the device id never changes. For that I used below code with the third party SSKeychain to save and retrieve the old UDID: NSString *Appname = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleName"]; NSString *strApplicationUUID = [SSKeychain passwordForService:Appname account:@

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have taken SVN check-in for a project. Thereafter I have installed pod via terminal . After installation of pod there are few warning stating <PBXResourcesBuildPhase UUID=...> attempted to initialise an object with an unknown UUID. What might be reason? Is this warning critical ? 回答1: The reason that happened in my case was some developer updated a pod A while I installed a new pod B (without updated pod A). So when I merged his codes I got the warning. An easy way to fix this is to <1> remove libPods.a from General->Linked Frameworks and

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I can't get Hibernate working with java.util.UUID for PostgreSQL. Here is the mapping using javax.persistence.* annotations: private UUID itemUuid; @Column(name="item_uuid",columnDefinition="uuid NOT NULL") public UUID getItemUuid() { return itemUuid; } public void setItemUuid(UUID itemUuid) { this.itemUuid = itemUuid; } When persisting a transient object I get a SQLGrammarException: column "item_uuid" is of type uuid but expression is of type bytea at character 149 PostgreSQL version is 8.4.4 JDBC driver - 8.4.4-702 (also tried 9.0 - same

I was under the impression that just having MySQL generate the primary key via UUID() would make the key unique across servers, etc. But, there is no way to fetch the last inserted UUID , which requires that an extra select statement be done each time I insert. Is it possible to have PHP generate the exact same UUID() that MySQL would generate? Colin O'Dell No, it's not possible to have PHP generate the exact same UUID() as MySQL because it's a (completely) random number. It sounds like your problem is that you like using UUID() in MySQL but don't want to execute an extra query to figure out

I'm using pylons and sqlalchemy and I was wondering how I could have some randoms ids as primary_key. the best way is to use randomly generated UUIDs: import uuid id = uuid.uuid4() uuid datatypes are available natively in some databases such as Postgresql (SQLAlchemy has a native PG uuid datatype for this purpose - in 0.5 its called sqlalchemy.databases.postgres.PGUuid ). You should also be able to store a uuid in any 16 byte CHAR field (though I haven't tried this specifically on MySQL or others). i use this pattern and it works pretty good. source from sqlalchemy import types from sqlalchemy

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm trying to write a class for a read-only object which will not be really copied with the copy module, and when it will be pickled to be transferred between processes each process will maintain no more than one copy of it, no matter how many times it will be passed around as a "new" object. Is there already something like that? 回答1: I made an attempt to implement this. @Alex Martelli and anyone else, please give me comments/improvements. I think this will eventually end up on GitHub. """ todo: need to lock library to avoid thread trouble?

写在前面 安全测试需要, 为防止后台响应数据返给前台过程中被篡改前台再拿被篡改后的数据进行接下来的操作影响正常业务, 决定采用RSA对响应数据进行签名和验签, 于是有了这篇<RSA后台签名前台验签的应用>. 我这里所谓的返给前台的数据只是想加密用户验证通过与否的字段success是true还是false, 前台拿这个success作为判断依据进行下一步的操作, 是进一步向后台发起请求还是直接弹出错误消息.照测试结果看这是个逻辑漏洞, 即使后台返回的是false, 在返回前台的过程中响应包被劫获, 将false改为true, 这样的操作也是能做到的(BurpSuit). 所以后台响应数据尽量不要再二次使用. 那既然能篡改, 如何防止流氓篡改呢? 说一下整体思路: 首先生成密钥对, 私钥存放在后台用于签名, 公钥存放在前台用于验签. 所谓签名就是指拿明文+私钥生成的 签名结果 , 返回数据给前台时将 明文+签名结果 一并返给前台, 前台用 公钥+接收到的明文+签名结果 进行验签, 这样即使响应包被劫获, 篡改明文后, 验证签名时也不会验证通过, 从而达到响应数据防篡改的目的. 接下来说一下具体步骤. 正文(具体步骤) 1.在线生成密钥对 采用在线工具生成密钥对, 私钥密码可填可不填, 网址: http://web.chacuo.net/netrsakeypair 生成密钥对备用. 2