在运行时通过 java 命令提示符加载配置文件 (project.properties)
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load config file (project.properties) at runtime via command prompt in java
提问by deepaksharma
I would like to load properties file via command prompt in java.
我想通过 java 命令提示符加载属性文件。
Properties file name: project.properties
属性文件名：project.properties
java -classpath .;test.jar; com.project.Main
What 'll be the command if I'll load the properties files via command prompt.
如果我通过命令提示符加载属性文件，那么命令是什么。
Thank in advance.
预先感谢。
I have executed the below mentioned command on command prompt but not get any output.
我在命令提示符下执行了下面提到的命令，但没有得到任何输出。
java -classpath .;test.jar; -DPROP_FILE="C:\Program Files\DemoApp\config\project.properties" com.project.Main
java -classpath .;test.jar; -DPROP_FILE="C:\Program Files\DemoApp\config\project.properties" com.project.Main
回答by Petr Mensik
Run java -classpath .;test.jar; com.project.Main project.properties, than read this argument in your main method and load the file.
运行java -classpath .;test.jar; com.project.Main project.properties，而不是在您的主要方法中读取此参数并加载文件。
public static void main(String[] args) {
String fileName = args[0];
Properties prop = new Properties();
InputStream in = getClass().getResourceAsStream(fileName);
prop.load(in);
}
回答by sprabhakaran
Send file path as below format,
发送文件路径如下格式，
java -classpath .;test.jar; -DPROP_FILE=conf\project.properties com.project.Main
Use below code for getting property file
使用以下代码获取属性文件
String propFile = System.getProperty("PROP_FILE");
Properties props = new Properties();
props.load(new FileInputStream(propFile));
Thanks.
谢谢。
回答by vishal
java -classpath c:\java Client test.properties
"c:\java" is classpath - change to your java classpath
"c:\java" 是类路径 - 更改为您的 Java 类路径
回答by Adriaan Koster
In your code load it as a java.util.ResourceBundle:
在您的代码中将其加载为java.util.ResourceBundle：
ResourceBundle properties = ResourceBundle.getBundle("project");
You can access the properties via the ResourceBundle API.
您可以通过ResourceBundle API访问这些属性。
Put your properties file on the classpath when starting your app:
启动应用程序时将属性文件放在类路径上：
java -classpath .;test.jar;project.properties com.project.Main
