spring boot 加载配置文件 properties / json

demo.properties

配置文件

main
	|_ java
	|_ resources
		|_ property
			|_ demo.properties
           

demo.desc=spring boot property config of properties file
demo.babbys[0].name=Tom
demo.babbys[0].age=2
demo.babbys[0].address=苏州
demo.babbys[1].name=Lily
demo.babbys[1].age=5
demo.babbys[1].address=杭州
           

实体对象

import lombok.Data;

@Data
public class Babby {
	private String name;
	private Integer age;
	private String address;
}
           

配置

import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;

import java.util.List;

@Data
@Configuration
@PropertySource("classpath:property/demo.properties")
@ConfigurationProperties(prefix = "demo")
public class Demo {
	private String desc;
    private List<Babby> babbys;
}
           

使用

@Autowired
private Demo demo;
           

demo.json

配置文件

main
	|_ java
	|_ resources
		|_ property
			|_ demo.json
           

{
	"desc": "spring boot property config of json file",
	"babbys": [{
		"name": "Tom",
		"age": 2,
		"address": "苏州"
	},{
		"name": "Lily",
		"age": 5,
		"address": "杭州"
	}]
}
           

实体对象

import lombok.Data;

@Data
public class Demo {
	private String desc;
    private List<Babby> babbys;
}
           

import lombok.Data;

@Data
public class Babby {
	private String name;
	private Integer age;
	private String address;
}
           

配置

import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.util.ResourceUtils;

@Configuration
public class JsonFileConfig {

    @Bean
    public Demo demo() throws IOException {
    	Resource resource = new ClassPathResource("properties/demo.json");
        InputStream inputStream = resource.getInputStream();
        return new ObjectMapper().readValue(inputStream, Demo.class);
    }

}
           

使用

@Autowired
private Demo demo;