【Spring Boot】配置文件@ConfigurationProperties，读取List、Map参数

List

application.properties

custom.config.config1.folders[0]=/root
custom.config.config1.folders[1]=/home/user1
custom.config.config1.folders[2]=/home/user2

Properties类

@ConfigurationProperties(prefix = "custom.config.config1")
public class Config1Properties{
	private List<String> folders;
	...
}

Map

application.properties

custom.config.config1.map.key1=value1
custom.config.config1.map.key2=value2
custom.config.config1.map.key3=value3
custom.config.config1.map.key4=value4
custom.config.config1.map.key5=value5

Properties类

@ConfigurationProperties(prefix = "custom.config.config1")
public class Config1Properties{
	private Map<String, String> map;
	...
}

Object

application.properties

custom.config.config1.server.host=host1
custom.config.config1.server.port=22
custom.config.config1.server.username=username1
custom.config.config1.server.password=password1

Properties类

@ConfigurationProperties(prefix = "custom.config.config1")
public class Config1Properties{
	private ServerProperties server;
	...
	public static class ServerProperties {
		private String host;
		private int port;
		private String username;
		private String password;
		...
	}
}

Object List

application.properties

custom.config.config1.servers[0].host=host1
custom.config.config1.servers[0].port=22
custom.config.config1.servers[0].username=username1
custom.config.config1.servers[0].password=password1
custom.config.config1.servers[1].host=host2
custom.config.config1.servers[1].port=22
custom.config.config1.servers[1].username=username2
custom.config.config1.servers[1].password=password2

Properties类

@ConfigurationProperties(prefix = "custom.config.config1")
public class Config1Properties{
	private List<ServerProperties> servers;
	...
	public static class ServerProperties {
		private String host;
		private int port;
		private String username;
		private String password;
		...
	}
}