# README
util
# Functions
字符串组合，排斥空数据.
下载文件.
GetVal 获取多个字，提取非空值.
判断元素是否为空.
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进行md5.
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毫秒转换时间类型.
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过滤html多余标签.
src提取.
（2）解密：对采用sha1算法加密后转base64格式的数据进行解密（私钥PKCS1格式）.
（1）加密：采用sha1算法加密后转base64格式.
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返回字符串.
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强制转换成string.
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输出毫秒值.
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