" & < &gt 等html字符转义

常用表：

No	文字表記	10进制	16进制	文字		Comment
001	"	"	"	"""		quotation mark = APL quote
002	&	&	&	"&"		ampersand
003	&lt;	&#60;	&#x3C;	"<"		less-than sign
004	&gt;	&#62;	&#x3E;	">"		greater-than sign
005	&nbsp;	&#160;	&#xA0;	" "		no-break space = non-breaking space(不被折断的空格)

其他字符链接：https://blog.csdn.net/wusuopubupt/article/details/8817826