java正则匹配sql语句_java 正则 贪婪匹配 匹配sql语句中的引号内容

public class Demo {

public static void main(String[] args) {

String sql1 = "use test;select * from default.abc where dt='abc;faf;fff' and ct=\"2012;43\" ; ";

sql1 = "select * from aaa where dt= '20 ;12; 34;3' AND name='fafae; fa ; a'";

//配置“” 或 ‘’ 里的内容

Pattern p1 = Pattern.compile("'.*'|\".*\"");//贪婪匹配

Matcher m1 = p1.matcher(sql1);

String replace1 = null;

while (m1.find()) {

// 贪婪匹配 group= '20 ;12; 34;3' AND name='fafae; fa ; a'

String group = m1.group();

if (group.contains(";")) {

replace1 = sql1.replace(group, "'PLACEHOLDER'");

sql1 = replace1;

}

}

System.out.println("贪婪匹配" + sql1);

String sql2 = "select * from aaa where dt= '20 ;12; 34;3' AND name='fafae; fa ; a'";

//配置“” 或 ‘’ 里的内容

Pattern p2 = Pattern.compile("'.*?'|\".*?\"");//非贪婪匹配

Matcher m2 = p2.matcher(sql2);

String replace2 = null;

while (m2.find()) {

// 第一次匹配 group '20 ;12; 34;3'

// 第二次匹配 group 'fafae; fa ; a'

String group = m2.group();

if (group.contains(";")) {

replace2 = sql2.replace(group, "'PLACEHOLDER'");

sql2 = replace2;

}

}

System.out.println("非贪婪匹配" + sql2);

}

}

结果：

贪婪匹配 select * from aaa where dt= 'PLACEHOLDER'

非贪婪匹配select * from aaa where dt= 'PLACEHOLDER' AND name='PLACEHOLDER'