Question

问题

我正在进行数据库迁移，遇到以下senario，在插入的单引号内有单引号，经过几次尝试修复后，我得出结论，我需要使用正则表达式，并且到达了到可以替换文本中心单引号的地步，当它出现在开头时，我现在遇到了问题。我的正则表达式具有前两个单引号，但我的目标是后两个。

SQL插入：

(1, '22', '2006-11-10', '3', 'field1', 'field2', '2006-12-12', '11:20:06', '''field3', '

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus ex ipsum, luctus id dignissim tempor, volutpat eget sapien. Cras accumsan molestie iaculis. Mauris vehicula a nunc vel tincidunt. 
 Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. 

    - Lorem ipsum dolor '' sit amet - ''''

 Aliquam vestibulum tincidunt odio, id varius sapien lacinia ac. Phasellus ullamcorper ante ut lacus dictum commodo.
  Integer sit amet lacus ornare massa feugiat tempus. 

', null, null);

我的Regex（js）：

((["'])(?:(?=(\'\'\?))\2)*?)\1(?!,)

我在进行正则表达式后找到并替换的目标是将其作为结果

(1, '22', '2006-11-10', '3', 'field1', 'field2', '2006-12-12', '11:20:06', '\'\'field3', '

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus ex ipsum, luctus id dignissim tempor, volutpat eget sapien. Cras accumsan molestie iaculis. Mauris vehicula a nunc vel tincidunt. 
 Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. 

    - Lorem ipsum dolor \'\' sit amet - \'\'\'\'

 Aliquam vestibulum tincidunt odio, id varius sapien lacinia ac. Phasellus ullamcorper ante ut lacus dictum commodo.
  Integer sit amet lacus ornare massa feugiat tempus. 

', null, null);

我正在使用此网站进行测试：https://regex101.com/（已选择javascript）

Answer 1

一种选择是匹配一个'或"分隔符，然后延迟重复直到再次匹配该分隔符后跟一个逗号（或{{1 }}（如果项目是列表中的最后一个）。然后，使用替换函数将定界符内的所有内容替换为)的转义符：

https://regex101.com/r/RRmq8g/1

如果要在定界符为const input = `(1, '22', '2006-11-10', '3', 'field1', 'field2', '2006-12-12', '11:20:06', '''field3', ' Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus ex ipsum, luctus id dignissim tempor, volutpat eget sapien. Cras accumsan molestie iaculis. Mauris vehicula a nunc vel tincidunt. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. - Lorem ipsum dolor '' sit amet - '''' Aliquam vestibulum tincidunt odio, id varius sapien lacinia ac. Phasellus ullamcorper ante ut lacus dictum commodo. Integer sit amet lacus ornare massa feugiat tempus. ', null, null);`; const output = input.replace( /(["'])([\s\S]*?)\1(?=[,)])/g, (_, delim, content) => delim + content.replace(/'/g, "\\'") + delim ); console.log(output);时转义"，请从"构造替换正则表达式：

delim

const output = input.replace(
  /(["'])([\s\S]*?)\1(?=[,)])/g,
  (_, delim, content) => {
    const pattern = new RegExp(delim, 'g')
    return delim + content.replace(pattern, '\\' + delim) + delim
  }
);

const input = `(1, "22 foo bar "double quotes" here ", '2006-11-10', '3', 'field1', 'field2', '2006-12-12', '11:20:06', '''field3', ' Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus ex ipsum, luctus id dignissim tempor, volutpat eget sapien. Cras accumsan molestie iaculis. Mauris vehicula a nunc vel tincidunt. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. - Lorem ipsum dolor '' sit amet - '''' Aliquam vestibulum tincidunt odio, id varius sapien lacinia ac. Phasellus ullamcorper ante ut lacus dictum commodo. Integer sit amet lacus ornare massa feugiat tempus. ', null, null);`; const output = input.replace( /(["'])([\s\S]*?)\1(?=[,)])/g, (_, delim, content) => { const pattern = new RegExp(delim, 'g') return delim + content.replace(pattern, '\\' + delim) + delim } ); console.log(output);的意思是：

/(["'])([\s\S]*?)\1(?=[,)])/g匹配并捕获定界符
(["'])-重复任何字符，直到获得：
([\s\S]*?)-分隔符，后跟
\1-逗号或(?=[,)])

JavaScript Regex在SQL插入中的单引号内获取多个单引号

1 个答案: