根据代码获取properties对应信息

@Component
public class ErrorMessage{
	private ErrorMessage{

	}
private final static Properties PROPERTIES = getProperties();

private static Properties getProperties(){
	InputStream resourceAsStream = ErrorMessage.class.getClassLoader().getResourceAsStream("errorMessage.properties");
	Properties properties = new Properties();
	try{
		Assert.notNull(resourceAsStream,"errorMessage.properties文件不存在");
		properties.load(new InputStreamReader(resourceAsStream,StandardCharsets.UTF_8));
	}catch(IOEException e){
		e.printStackTrace();
	}
	return properties;
}
public static String getMessage(String code){
	return PROPERTIES.getProperty(code);
}
}
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errorMessage.properties文件

9999=代码有误
9998=参数有误
9997=数组越界
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