我们假设我们将环境变量导出为:
export SOME_STRING_CONFIG_PARAM="01"
和application.properties
:
some.string.config.param=${SOME_STRING_CONFIG_PARAM:01}
注入Java字段:
@Value("${some.string.config.param}")
String someStringConfigfParam;
启动Spring应用程序后打印出字段:
System.out.println("someStringConfigParam: " + someStringConfigParam);
结果:
someStringConfigParam: 1
如何告诉Spring该值应该被视为String?
答案 0 :(得分:2)
我的演示项目得到了正确答案:
This is the Test Property Value = 01
但我在yml
文件中遇到问题,原因是yml
默认情况下将01
视为整数。只需使用双引号即可解决问题。
在yml
文件中输入示例:
a: 123 # an integer
b: "123" # a string, disambiguated by quotes
c: 123.0 # a float
d: !!float 123 # also a float via explicit data type prefixed by (!!)
e: !!str 123 # a string, disambiguated by explicit type
f: !!str Yes # a string via explicit type
g: Yes # a boolean True (yaml1.1), string "Yes" (yaml1.2)
h: Yes we have No bananas # a string, "Yes" and "No" disambiguated by context.
另见:
https://en.wikipedia.org/wiki/YAML
Do I need quotes for strings in Yaml?