snaker-core/src/main/java/org/snaker/engine/helper/AssertHelper.java
public static void notEmpty(String str, String message) {
		if (str == null || str.length() == 0) {
			throw new IllegalArgumentException(message);
		}
	}
public static void notEmpty(String str, String message) {
		if (str == null || str.length() == 0) {
			throw new IllegalArgumentException(message);
		}
	}
断言给定的字符串为非空
@param str
@param message