将属性文件放在Eclipse项目中的位置

Question

Please tell me where exactly do i put my .properties file in my eclipse project. Do I make a separate folder for it ? I want to put it in such a way that I will be able to distribute my project easily in JAR form.

Thanks.

EDIT:

I want to put the properties file in such a way that it can be easily edited later, on any OS.

Answer 1

The approach I use in order to be able to easily change configuration without redeployment .

One version of the property file (with the defaults) in the root of your project, I always let it in the application package (foo.bar.myapp). I load the default one with getResourceAsStream("/foo/bar/myapp/config.properties") or like in the sample relative to the class package.

And additionally I ready a system property:

String configFileLocation = System.getProperty("config");

And just override the default with the properties read from the config file passed as property.

For instance:

Properties props = new Properties();
props.load(Main.class.getResourceAsStream("mydefault.properties"));

System.out.println("default loaded: " + props);

String configFile = System.getProperty("config");
if (configFile != null) {
    props.load(new FileInputStream(configFile));
    System.out.println("custom config loaded from " + configFile);
}

System.out.println("custom override: " + props);

This would load first your resource stored under your project in foo.bar package named mydefault.properties , and after it if system property config is configured it will load override the loaded properties with the one the the referred path.

The system property can be set using -D parameter, in this case would be something like: java -Dconfig=/home/user/custom.properties foo.bar.Main . Or if you are in a web application (Tomcat for instance) you can set this property using CATALINA_OPTS .

Answer 2

src/main/resource是一个理想的选择。