5、SpringBoot的Profile功能

• Z时代
• 2024-01-10
• 分类：综合

private static final String DEFAULT_NAMES = "application";
// Set<string> names = isFolder ? getSearchNames() : NO_SEARCH_NAMES;  
private Set<string> getSearchNames() {  
    if (this.environment.containsProperty(CONFIG_NAME_PROPERTY)) {  
        String property = this.environment.getProperty(CONFIG_NAME_PROPERTY);  
        return asResolvedSet(property, null);  
    }  
	// 返回默认的配置文件的前缀"application";
    return asResolvedSet(ConfigFileApplicationListener.this.names, DEFAULT_NAMES);  
}

// names.forEach((name) -> load(location, name, profile, filterFactory, consumer));  
private void load(String location, String name, Profile profile, DocumentFilterFactory filterFactory, 
				                                 DocumentConsumer consumer) {  
    // name默认是application,跳过
    if (!StringUtils.hasText(name)) {  
       for (PropertySourceLoader loader : this.propertySourceLoaders) {  
          if (canLoadFileExtension(loader, location)) {  
             load(loader, location, profile, filterFactory.getDocumentFilter(profile), consumer);  
             return;  
	  }  
       }  
    }  
    Set<string> processed = new HashSet&lt;&gt;();  
    // this.propertySourceLoaders见下图
    for (PropertySourceLoader loader : this.propertySourceLoaders) {  
	// 返回每个loader可以处理的扩展名,PropertiesPropertySourceLoader可以处理{.properties,.xml},
	// YamlPropertySourceLoader可以处理{.yml,.yaml}格式的文件
        for (String fileExtension : loader.getFileExtensions()) {  
           if (processed.add(fileExtension)) {  
              loadForFileExtension(loader, location + name, "." + fileExtension, profile, filterFactory, consumer);  
           }  
        }  
    }  
}

private void load(PropertySourceLoader loader, String location, Profile profile, DocumentFilter filter,  
                                                                                 DocumentConsumer consumer) {  
    try {  
	// 加载资源
        Resource resource = this.resourceLoader.getResource(location);  
        // applicationConfig: [classpath:/application.properties]
        String name = "applicationConfig: [" + location + "]";  
        List<document> documents = loadDocuments(loader, name, resource);  
        List<document> loaded = new ArrayList&lt;&gt;();  
        for (Document document : documents) {  
            if (filter.match(document)) {  
                addActiveProfiles(document.getActiveProfiles());  
                addIncludedProfiles(document.getIncludeProfiles());  
                loaded.add(document);  
            }  
        }  
        Collections.reverse(loaded);  
        if (!loaded.isEmpty()) {  
           loaded.forEach((document) -&gt; consumer.accept(profile, document));  
        }  
     }  
}
```</document></document></string></string></string></string></string></string></profile></profile></profile></profile></profile></environmentpostprocessor>

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