使用CaseUtils 对Java字符串进行转换为驼峰格式：
CaseUtils.toCamelCase(null, false) = null
CaseUtils.toCamelCase("", false, *) = ""
CaseUtils.toCamelCase(*, false, null) = *
CaseUtils.toCamelCase(*, true, new char[0]) = *
CaseUtils.toCamelCase("To.Camel.Case", false, new char[]{'.'}) = "toCamelCase"
CaseUtils.toCamelCase(" to @ Camel case", true, new char[]{'@'}) = "ToCamelCase"
CaseUtils.toCamelCase(" @to @ Camel case", false, new char[]{'@'}) = "toCamelCase"
构造方法：
public static String toCamelCase(String str,
boolean capitalizeFirstLetter,
char... delimiters)
其中：str为要转换的字符串；capitalizeFirstLetter表示是否首字母大写；delimiters指定连词符。
