J2Cache 一级缓存数据
https://blog.csdn.net/luckyrocks/article/details/79248016
根据以上博客,学习到的文件 引入问题
1. ConfigurationProperties注解的locations属性在1.5.X以后没有了,不能指定locations来加载yml文件
2. PropertySource注解只支持yml文件加载,详细见官方文档: https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#boot-features-external-config-yaml-shortcomings
3. Spring Framework有两个类加载YAML文件,YamlPropertiesFactoryBean和YamlMapFactoryBean
4. 可以通过PropertySourcePlaceholderConfigurer来加载yml文件,暴露yml文件到spring environment
// 加载YML格式自定义配置文件
@Bean
public static PropertySourcesPlaceholderConfigurer properties() {
PropertySourcesPlaceholderConfigurer configurer = new PropertySourcesPlaceholderConfigurer();
YamlPropertiesFactoryBean yaml = new YamlPropertiesFactoryBean();
yaml.setResources(new FileSystemResource("config.yml"));//File引入
// yaml.setResources(new ClassPathResource("youryml.yml"));//class引入
configurer.setProperties(yaml.getObject());
return configurer;
}
5. 可以直接通过@Value引入属性值注入Bean
@Component
@ConfigurationProperties(prefix = "prefix")
public class ConfigYML1 {
// 以下属性可以直接获取
private String name;
private List
6. config.yml
prefix:
name:
list:
- name: tech
key: 123
source: beijing
- name: skill
key: 987
source: shanghai
---
your:
username: test
---
list2:
name: qwer
url: http://blog.csdn.net/luckyrocks
7. Question:
在yml文件中,‘---’表示分隔符,表示多个yml,当Component在ConfigurationProperties注解的属性中prefix设置值后,list2无法直接加载为map,即如果你声明一个list2的map是没有值的,只能通过list2.name以字符串的形式获取到
8. Solutions:
yml文件以‘---’分隔的属性无法在写有前缀的情况下获取
a. 写到另外一个yml文件中,重新加载
b. 将list2后面的属性放到'prefix'前缀的后面,也可以获取
始终找不到满意的解决方法,你是怎么解决的?请告诉我
参考资料:
1. http://blog.csdn.net/tyrant_800/article/details/78780312
2. http://m.mamicode.com/info-detail-2006405.html
3. https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#boot-features-external-config-yaml-shortcomings