我正在尝试找到一个正则表达式来验证带有名称和电子邮件的文本框输入（电子邮件位于尖括号中），即John Smith <john@smith.com>）。未接受的条目为John Smith john@smith.com或"John Smith" <john@smith.com>。
我查看了许多帖子，但我没有看到一个涉及要求尖括号＆lt;＆gt;。
我看过这个帖子
regular expression for email with name
但要么我需要的信息不存在，要么我无法提取答案。我尝试了第一个答案中建议的正则表达式
^(?:(?:[a-z\d.!#$%&’*+/=?^_`{|}~-]+@[a-z\d-]+(?:\.[a-z\d-]+)*|"?([a-z]| (?! ))+"? )(?:,\s*|$))*$
但我的示例文字没有匹配。
此文本框输入只接受一个条目（名称+电子邮件）。
感谢您的帮助。
答案 0 :(得分：6)
这是实际尝试回答您的问题，因为人们似乎只是盲目地发布RFC822正则表达式...
让我们从您提供的初始正则表达式开始：
^(?:(?:[a-z\d.!#$%&’*+/=?^_`{|}~-]+@[a-z\d-]+(?:\.[a-z\d-]+)*|"?([a-z]| (?! ))+"? )(?:,\s*|$))*$
重新格式化：
^
(?:
(?:
[a-z\d.!#$%&’*+/=?^_`{|}~-]+
@
[a-z\d-]+
(?:
\.[a-z\d-]+
)*
|
"?([a-z]| (?! ))+"?
)
(?:,\s*|$)
)*
$
好的，我们可以看到它尝试匹配地址和名称列表。那不是我们想要的。我们只提取地址部分：
[a-z\d.!#$%&’*+/=?^_`{|}~-]+
@
[a-z\d-]+
(?:
\.[a-z\d-]+
)*
好，让我们调整一下，然后添加尖括号要求：
<(
[\w.!#$%&’*+/=?^_`{|}~-]+
@
[\w-]+
(?:
\.[\w-]+
)+
)>
现在，只需匹配它前面的名字即可。让我们假设一个名字可以包含任何内容。
^
\s*
(.+?)
\s*
<(
[\w.!#$%&’*+/=?^_`{|}~-]+
@
[\w-]+
(?:
\.[\w-]+
)+
)>
\s*
$
下面。看起来不错：Demo。名称位于第一组中，地址位于第二组中。
简短版本：
^\s*(.+?)\s*<([\w.!#$%&’*+\/=?^_`{|}~-]+@[\w-]+(?:\.[\w-]+)+)>\s*$
如果您想限制更多，可以限制名称中允许的字符，只允许使用字母，数字和空格：
^
\s*
([\p{L}\d\s]+?)
\s*
<(
[\w.!#$%&’*+/=?^_`{|}~-]+
@
[\w-]+
(?:
\.[\w-]+
)+
)>
\s*
$
这消除了引用的名称案例：Demo。
简短版本：
^\s*([\p{L}\d\s]+?)\s*<([\w.!#$%&’*+\/=?^_`{|}~-]+@[\w-]+(?:\.[\w-]+)+)>\s*$
答案 1 :(得分：0)
如果您要根据RFC822验证相应的电子邮件，这是正则表达式：
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)+|\Z|(?=[\["()<>@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(?:(?:\r\n)?[ \t]))*"(?:(?:
\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\031]+(?:(?:(
?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(?:(?:\r\n)?[
\t]))*"(?:(?:\r\n)?[ \t])*))*@(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\0
31]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\
](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\031]+
(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\](?:
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r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[
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[ \t]))*"(?:(?:\r\n)?[ \t])*)*:(?:(?:\r\n)?[ \t])*(?:(?:(?:[^()<>@,;:\\".\[\]
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:[^()<>@,;:\\".\[\] \000-\031]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[
\]]))|\[([^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*))*|(?:[^()<>@,;:\\".\[\] \000-
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?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t])*)*\<(?:(?:\r\n)?[ \t])*(?:@(?:[^()<>@,;
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\t])*(?:[^()<>@,;:\\".\[\] \000-\031]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,
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?:\r\n)?[ \t])*))*)?;\s*)
但最好使用模块;）
答案 2 :(得分：0)
根据RFC822验证电子邮件：
@sputnick的正则表达式格式化。
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(?:
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