properties

Ant loadfile override property

岁酱吖の 提交于 2019-12-31 00:46:29
问题 I'm trying to use the Ant task <loadfile> in a loop to parse the contents of a file. I have something like <loadfile srcFile="@{some.input}" property="my.property"> Since Ant properties are immutable, this doesn't work for me. I need 'my.property' to update on every iteration. Is there a way to achieve this? I know Ant-contrib has a <var> task but I'm not sure how to use <loadfile> with it. Any recommendations? Thanks. 回答1: The Ant plugin Flaka provides a let task, allowing to overwrite

SpringBoot如何优雅的使用RocketMQ

ぃ、小莉子 提交于 2019-12-30 23:22:57
MQ,是一种跨进程的通信机制,用于上下游传递消息。在传统的互联网架构中通常使用MQ来对上下游来做解耦合。 举例:当A系统对B系统进行消息通讯,如A系统发布一条系统公告,B系统可以订阅该频道进行系统公告同步,整个过程中A系统并不关系B系统会不会同步,由订阅该频道的系统自行处理。 什么是RocketMQ? 官方说明: 随着使用越来越多的队列和虚拟主题,ActiveMQ IO模块遇到了瓶颈。我们尽力通过节流,断路器或降级来解决此问题,但效果不佳。因此,我们那时开始关注流行的消息传递解决方案Kafka。不幸的是,Kafka不能满足我们的要求,特别是在低延迟和高可靠性方面。 看到这里可以很清楚的知道RcoketMQ 是一款低延迟、高可靠、可伸缩、易于使用的消息中间件。 具有以下特性: 支持发布/订阅(Pub/Sub)和点对点(P2P)消息模型 能够保证严格的消息顺序,在一个队列中可靠的先进先出(FIFO)和严格的顺序传递 提供丰富的消息拉取模式,支持拉(pull)和推(push)两种消息模式 单一队列百万消息的堆积能力,亿级消息堆积能力 支持多种消息协议,如 JMS、MQTT 等 分布式高可用的部署架构,满足至少一次消息传递语义 RocketMQ环境安装 下载地址: https://rocketmq.apache.org/dowloading/releases/

20191230——mybatis全局配置文件SqlMapperConfig文件

*爱你&永不变心* 提交于 2019-12-30 22:58:48
properties(属性) settings(全局配置参数) typeAliases(类型别名) typeHandlers(类型处理器) objectFactory(对象工厂) plugins(插件) environments(环境集合属性对象) environment(环境子属性对象) transactionManager(事务管理) dataSource(数据源) mappers(映射器) properties 将数据库连接参数,单独的配置在db.properties中, 在sqlmapconfig.xml中加载该配置文件的属性, 在sqlmapcongfig不需要求对数据库连接参数硬编码 方便对于运行参数进行统一的管理,其他xml对于其进行引用 db.properties jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/mybatis?characterEncoding=utf-8 jdbc.username=root jdbc.password=password 新的SqlMapConfig文件 <properties resource="db.properties"/> <environments default="development"> <environment id=

Spring boot的配置文件:properties文件中文乱码问题

℡╲_俬逩灬. 提交于 2019-12-30 22:49:01
properties配置文件(application.properties): person.name=张三 person.age=13 person.boss=false person.birth=2010/7/28 person.list=admin,120 person.map.k1=kkk person.map.k2=888 person.dog.name=Petty person.dog.age=12   注入Bean对象属性后,properties文件中的中文值在控制台输出乱码,如下图: 解决方式:   点击 File——Settings,在搜索框中输入File Encoding,然后选中File Encoding选项,在图中所示位置进行设置。 来源: CSDN 作者: zmt0104 链接: https://blog.csdn.net/qq_40845019/article/details/103774088

Valid property names, property assignment and access in JavaScript

江枫思渺然 提交于 2019-12-30 20:31:34
问题 Updated Question What, exactly, qualifies as a valid property name in Javascript? How do various methods of property assignment differ? And how does the property name affect property access? Note The answers to my original question (seen below) helped to clear some things up, but also opened a new can of worms. Now that I've had a chance to become a bit more familiar with JavaScript, I believe I've been able to figure a lot of it out. Since I had a hard time finding this information

Valid property names, property assignment and access in JavaScript

谁都会走 提交于 2019-12-30 20:31:09
问题 Updated Question What, exactly, qualifies as a valid property name in Javascript? How do various methods of property assignment differ? And how does the property name affect property access? Note The answers to my original question (seen below) helped to clear some things up, but also opened a new can of worms. Now that I've had a chance to become a bit more familiar with JavaScript, I believe I've been able to figure a lot of it out. Since I had a hard time finding this information

Do properties always have a value when unset?

。_饼干妹妹 提交于 2019-12-30 18:29:07
问题 I have a property like this: public Tuple<String, String>[] Breadcrumbs { get; set; } and I have a test in one of my methods like this: if (Breadcrumbs != null && Breadcrumbs.Length > 0) { } Depending on when this method is called, Breadcrumbs may not have been set. In one test, Breadcrumbs == null evaulates to true. Will unset properties always have a value? (Will it always be null ?) 回答1: An automatically-implemented property which hasn't been explicitly set by any code will always have the

FrameworkElement.Name problem

℡╲_俬逩灬. 提交于 2019-12-30 17:52:40
问题 I am attempting to set the Name property of a Page in the constructor: public partial class PageListView : Page { public PageListView(string title) { InitializeComponent(); Name = title; } } However, I often get the following error message. 'x' is not a valid value for property 'Name'. Where x seems to be almost anything, drilling down into the exception details doesn't seem to provide any useful information (e.g. the InnerException is null.) Does anyone know what is happening here? 回答1: The

javascript cloneNode and properties

独自空忆成欢 提交于 2019-12-30 15:02:51
问题 Is there a quick way to "super" deep clone a node, including its properties? (and methods, I guess) I've got something like this: var theSource = document.getElementById("someDiv") theSource.dictator = "stalin"; var theClone = theSource.cloneNode(true); alert(theClone.dictator); The new cloned object has no dictator property. Now, say I've got a thousand properties attached to theSource - how can I (non-explicitly) transfer/copy them to the clone? // EDIT @Fabrizio Your hasOwnProperty answer

javascript cloneNode and properties

孤人 提交于 2019-12-30 15:02:31
问题 Is there a quick way to "super" deep clone a node, including its properties? (and methods, I guess) I've got something like this: var theSource = document.getElementById("someDiv") theSource.dictator = "stalin"; var theClone = theSource.cloneNode(true); alert(theClone.dictator); The new cloned object has no dictator property. Now, say I've got a thousand properties attached to theSource - how can I (non-explicitly) transfer/copy them to the clone? // EDIT @Fabrizio Your hasOwnProperty answer