Spring EL

1. 注入字符串、系统属性、计算结果

@Value("baozi")
private String name;
@Value("#{systemProperties['os.name']}")
private String osName;
@Value("#{2*3}")
private Integer result;

2. 从application.yml文件中读取值

myname:baozi

@Value("${myname}")
private String name;

3.文件中读取值一个组合的值

myname:baozi
myage:10
content:"名字：${myname},年龄：${myage}"

@Value("${content}")
private String content;