java.util.UnknownFormatConversionException: Conversion =““
问题： if (StringUtils.isNotEmpty(connectString)) { metasql = String.format(metasql + "and connect_url like concat('%','%s','%')", connectString); }在执行代码时报错java.util.UnknownFormatConversionException: Conversion = '''原因：在字符
