Question

我需要查询数据库，但该查询的参数值需要来自一个文件，这里是代码......

BufferedReader reader = new BufferedReader(new FileReader("C:/DBMigrations/empIDs.txt"));
String line = null;
String query = "select name, address from Employee where id in (";
while ((line = reader.readLine()) != null) {
        // the value of line needs to be plugged into query inside the in clause
    }

我正在使用Spring的SimpleJdbcTemplate。

提前感谢您的帮助。

Answer 1

您可以使用一种方法从文件中生成连锁ID的标记。

String query = "select name, address from Employee where id in ("+geneateEmployeeIds()+")";

private String geneateEmployeeIds(){

 // read your file here and convert it to string<br>
 // do id concatenation here
  return ids;
}

您可以了解如何获取文件here

的字符串内容

如何动态地将参数值添加到JdbcTemplate查询？

1 个答案: