字符串中查找IP地址的正则表达式:
IP地址:(2[0-4]\d|25[0-5]|[01]\d\d|\d\d|\d)\.(2[0-4]\d|25[0-5]|[01]\d\d|\d\d|\d)\.(2[0-4]\d|25[0-5]|[01]\d\d|\d\d|\d)\.(2[0-4]\d|25[0-5]|[01]\d\d|\d\d|\d) 邮件地址:[a-zA-Z0-9._%+-]+@(?!.*\.\..*)[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}
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