application -> ext(n,1) -> share(n,1) 我们可以通过如下代码进行验证
创建bootstrap.yaml
代码语言：javascript复制spring:
application:
name: order
cloud:
nacos:
config:
server-addr: 192.168.64.2:8848
namespace: test
file-extension: properties
sharedConfigs:
- dataId: share1.properties
refresh: true
- dataId: share2.properties
refresh: true
ext-config:
- dataId: ext1.properties
refresh: true
- dataId: ext2.properties
refresh: true
server:
port: 8081
添加nacos配置
# 配置内容和文件对应
source=order.properties
source=ext1.properties
source=ext2.properties
source=share1.properties
source=share2.properties
编写测试接口
代码语言：javascript复制/**
* @Author 乐哥聊编程
* @Doc 关注公众号"乐哥聊编程"获取文档和源码
* @Date 2023/5/21
* @Description
*/
@RestController
@RefreshScope
public class IndexController {
@Value("${source}")
private String source;
@GetMapping("/source")
public String hello(){
return source;
}
}
通过修改nacos配置，验证接口返回值
核心源码
从源码可以看出首先加载share,其次ext,最后application，和我们验证顺序相同
代码语言：javascript复制public PropertySource<?> locate(Environment env) {
nacosConfigProperties.setEnvironment(env);
ConfigService configService = nacosConfigManager.getConfigService();
if (null == configService) {
log.warn("no instance of config service found, can't load config from nacos");
return null;
}
long timeout = nacosConfigProperties.getTimeout();
nacosPropertySourceBuilder = new NacosPropertySourceBuilder(configService,
timeout);
String name = nacosConfigProperties.getName();
String dataIdPrefix = nacosConfigProperties.getPrefix();
if (StringUtils.isEmpty(dataIdPrefix)) {
dataIdPrefix = name;
}
if (StringUtils.isEmpty(dataIdPrefix)) {
dataIdPrefix = env.getProperty("spring.application.name");
}
CompositePropertySource composite = new CompositePropertySource(
NACOS_PROPERTY_SOURCE_NAME);
loadSharedConfiguration(composite);
loadExtConfiguration(composite);
loadApplicationConfiguration(composite, dataIdPrefix, nacosConfigProperties, env);
return composite;
}
