1、配置檔案

在application.properties中新增測試資料

my.name = wxtx
my.age = 20
#my.desc的實際值為hello wxtx
my.desc = hello ${my.name}
my.host[0] = 127.0.0.1
my.host[1] = 127.0.0.2
my.host[2] = 127.0.0.3

2、獲取值

@Autowired
private Environment envir;

@Value("${my.desc}")
private String desc;

@Value("${my.age}")
private
 
 Integer age;

public void testProperty() throws Exception {
    //通過Environment獲取值
    System.out.println(envir.getProperty("my.name"));
    //直接獲取指定值
    System.out.println(age);
    System.out.println(desc);
} 

3、依賴注入值

@Component
@ConfigurationProperties("my")
public class TestProperties {

    // 自動將my.host[0]、my.host[1]、my.host[2]組裝成list物件注入
 

    private List<String> host;
    public List<String> getHost() {
        return host;
    }
    public void setHost(List<String> host) {
        this.host = host;
    }

}