properties

JAVA 如何读取properties文件

不问归期 提交于 2020-01-15 05:41:42
properties文件 属性文件,以.properties结尾的文件 里面的存储的数据是key-value形式 中间可以用"=",":"," "将key和value隔开 如果一行中有多个等号,冒号,空格存在,则以最前面的座位分隔符 在实际开发中将频繁变动的数据放到.properties文件中 读取方式 1.利用文件输入流读取 animal.properties(此种方法该文件放置工程文件下) Aname=cat FileReader fr = new FileReader("animal.properties");//获取文件对象 Properties p = new Properties();//实例化Properties对象 p.load(fr);//加载properties文件 String s = p.getProperty("Aname");//得到properties文件中Aname的值 String s = p.getProperty("age","123");//该方法表示如果文件中无age,则返回123 2.利用ResourceBundle获取,比较简单,建议使用。(properties文件放置再src目录下) ResourceBundle rb = ResourceBundle.getBundle("animal"); System.out.println

@ActiveProfile and spring.profiles.active

随声附和 提交于 2020-01-14 19:25:07
问题 This is a piece of my applicationContext definition to retrieve some properties. <!-- get some properties --> <context:property-placeholder ignore-resource-not-found="false" ignore-unresolvable="false" location="classpath:/properties/${spring.profiles.active:test}/some.properties"/> As you can see I letting the spring.profiles.active decide which properties will be read. My tests are annotated with: @ActiveProfile("integration") You guessed it right my spring bean profiles are actually

读取外置config文件

ε祈祈猫儿з 提交于 2020-01-14 14:47:15
springboot读取外部配置文件的方法,如下优先级: 第一种是在执行命令的目录下建config文件夹。(在jar包的同一目录下建config文件夹,执行命令需要在jar包目录下才行),然后把配置文件放到这个文件夹下。 第二种是直接把配置文件放到jar包的同级目录。 第三种在classpath下建一个config文件夹,然后把配置文件放进去。 第四种是在classpath下直接放配置文件。 springboot默认是优先读取它本身同级目录下的一个config/application.properties 文件的。 在src/main/resources 文件夹下创建的application.properties 文件的优先级是最低的 所以springboot启动读取外部配置文件,只需要在外面加一层配置文件覆盖默认的即可,不用修改代码。 package com.xbxkj.open.controller; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.util.Properties; public class TestConfigPath { public static void main

abc.abstractmethod + property

此生再无相见时 提交于 2020-01-14 14:44:10
问题 According to the docs it should work to combine @property and @abc.abstractmethod so the following should work in python3.3: import abc class FooBase(metaclass=abc.ABCMeta): @property @abc.abstractmethod def greet(self): """ must be implemented in order to instantiate """ pass @property def greet_comparison(self): """ must be implemented in order to instantiate """ return 'hello' class Foo(FooBase): def greet(self): return 'hello' test the implementation: In [6]: foo = Foo() In [7]: foo.greet

Is it impossible to override a constant stored property?

旧城冷巷雨未停 提交于 2020-01-14 13:58:29
问题 I know (from the compiler's errors) that a constant property cannot be overridden by a constant, nor can it be overridden by the getter of a computed property. Obviously they can't be overridden by anything non-constant. There's no reason to add observers to them, either, since they'll never change. And yet final let seems to be a thing. Is it impossible to override a stored constant property? Is final let exactly equivalent to let ? 来源: https://stackoverflow.com/questions/35671819/is-it

Find all properties of an ActiveX component

一世执手 提交于 2020-01-14 10:28:32
问题 I tried looking around but was not able to convince myself with an answer as the world of COM/ActiveX seems to be very confusing. Basically what I want to know is, given the GUID, is there a way to know all the interfaces, properties and methods exposed by an ActiveX control? I read somewhere that you just have to ask if a particular property is there or not. But how do I ask about a property before knowing what are there? I guess IDispatch does something similar, but I am not able to make

Why would an integer property sometimes return a 0?

a 夏天 提交于 2020-01-14 09:22:06
问题 [Edit: I realized that the parameter that is failing is actually a double and not an integer. None of the integer timers fail according to the logs. Most of the timers and parameters are integers, but not all. Doubles are not atomic and the lack of locking may be the issue after all.] I have an application that uses a class that contains properties for configurable values. Most of the properties being used in the app are derived. The values are set at start up and not changed while the main

How to get the property that has a DataMemberAttribute with a specified name?

喜你入骨 提交于 2020-01-14 08:03:12
问题 How can I reflectively get the property that has the DataMember with a given name (let's assume every DataMember has a unique name)? For example, in the following code the property with the DataMember that has name "p1" is PropertyOne : [DataContract(Name = "MyContract")] public class MyContract { [DataMember(Name = "p1")] public string PropertyOne { get; set; } [DataMember(Name = "p2")] public string PropertyTwo { get; set; } [DataMember(Name = "p3")] public string PropertyThree { get; set;

significant change location delegate methods not being called

若如初见. 提交于 2020-01-14 08:01:29
问题 All of my code is in AppDelegate.m: - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { self.window = [[UIWindow alloc]initWithFrame:[[UIScreen mainScreen]bounds]]; _locationMgr = [[CLLocationManager alloc] init]; [_locationMgr setDelegate:self]; if([_locationMgr respondsToSelector:@selector(setAllowsBackgroundLocationUpdates:)]) [_locationMgr setAllowsBackgroundLocationUpdates:YES]; CLAuthorizationStatus authorizationStatus=

significant change location delegate methods not being called

我们两清 提交于 2020-01-14 08:01:27
问题 All of my code is in AppDelegate.m: - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { self.window = [[UIWindow alloc]initWithFrame:[[UIScreen mainScreen]bounds]]; _locationMgr = [[CLLocationManager alloc] init]; [_locationMgr setDelegate:self]; if([_locationMgr respondsToSelector:@selector(setAllowsBackgroundLocationUpdates:)]) [_locationMgr setAllowsBackgroundLocationUpdates:YES]; CLAuthorizationStatus authorizationStatus=