java中sql字符串的单引号的无效字符

Question

由于java sql字符串中的单引号,我得到"无效字符常量",我需要双引号,我把它放在单引号中

new StringBuffer("SELECT REPLACE(u.nombre,',',' ') as Organizacion,  ")
    .append(" CONCAT(' " ',REPLACE(s.direccion,',',' '),'"') as Street, '""' as Street2,")

Answer 1

您必须转义 java 字符串文字中的引号：

.append(" CONCAT('\"',REPLACE(s.direccion,',',' '),'\"') as Street, '\"\"' as Street2,")