怎样在富文本中给一些过滤条件得到纯文本?
比如一个含html标签的长文章中得到400个字符文本,过滤内容条件是,只留下:<code>超链接,<code><code>标签,<code>加粗标签,<code>斜体标签。
剩下的标签只留下纯文本。
删除换行符和img标签。见到两个空格以上替换为一个空格。
400个字符内如果<code><code>,加粗,斜体标签没有闭合的情况下 过滤剩下的内容闭合标签。
400个字符内如果超链接没有闭合 等到超链接闭合完结束。
网上找了好多示例都不符合。所以在sf上提问了。希望别删除问题。望有能力的编程师给予帮助。
回复内容:
比如一个含html标签的长文章中得到400个字符文本,过滤内容条件是,只留下:<code>超链接,<code><code>标签,<code>加粗标签,<code>斜体标签。
剩下的标签只留下纯文本。
删除换行符和img标签。见到两个空格以上替换为一个空格。
400个字符内如果<code><code>,加粗,斜体标签没有闭合的情况下 过滤剩下的内容闭合标签。
400个字符内如果超链接没有闭合 等到超链接闭合完结束。
网上找了好多示例都不符合。所以在sf上提问了。希望别删除问题。望有能力的编程师给予帮助。
目测要写正则根据条件分别匹配替换了。
建议先找个正则的教程看一遍,然后把需求拆成多个步骤,各个击破吧。
更新:
解决题主的需求除了字符串处理,其实也可以理解为对 DOM 的处理,用 js 来处理 DOM 更合适。
以前用过simple_html_dom这个库 ,可以像jquery一样操作html,希望对你有用

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