spring 替换字符串中的配置信息
public class PlaceholdersResolver {
private final static String PLACEHOLDERS_PREFIX = "$";
/**
* 对占位符进行解析
* 如果字符串中包含占位符则返回解析后的值，否则返回原值
* @param key
* @param environment
* @return
*/
public static String resolve(String key , Environment environment){
if(key.contains(PLACEHOLDERS_PREFIX)){
return environment.resolvePlaceholders(key);
}
return key;
}
}