Question

我是准备好陈述中的新手，不确定我尝试做的是否合法。

 String updatequery = "Update articles SET Title = ? WHERE id IN ?";

    try{
        prestatement = connect.prepareStatement(updatequery);

        prestatement.setString(1, "Test");
        prestatement.setString(2,"(4,5,6)");

我收到以下错误：

Error: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in        your SQL syntax; check the manual that corresponds to your MySQL server version for the     right syntax to use near ''(4,5,6)'' at line 1

似乎setString（）方法正在为查询添加引号，有没有办法避免使用此方法或其他方法来完成我想要做的事情？

Answer 1

试试这个：

final Collection<Integer> ids = Arrays.asList(4, 5, 6);

final StringBuilder updatequery = new StringBuilder("Update articles SET Title = ? WHERE id IN (");

for (int i = 0; i < ids.size(); i++) {
    updatequery.append("?,");
}

updatequery.deleteCharAt(updatequery.length() - 1);
updatequery.append(")");

System.out.println(updatequery);

prestatement.setString(1, "Test");
int i = 2;
for (final Integer id : ids) {
    prestatement.setInt(i ++, id);
}

Java PreparedStatement setString（）在查询中添加引号（mysql jdbc）

1 个答案: