Java采用setAsciiStream方法检索数据库指定内容实例解析

//使用了JDBC 类、DriverManager 类和系统输出，所以需要引入如下的包：
import java.sql.*;
import java.io.*;
//import java.util.*;
class useParameterResultSet
{
public static void main(String argv[])
{
String url="jdbc.odbc:useDSN";
String name,age,address,telephone;
int cno;
java.sql.ResultSet rs;
try
{
//加载驱动程序
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
//建立连接
Connection con=DriverManager.getConnection(url,"sa","");
//创建文件输入流
File file=new File("d:/java/usefile.txt");
int flength=2;
InputStream fis=new FileInputStream(file);
//创建PreparedStatement 对象
String sqlstr="select * from student where age=?";
PreparedStatement ps=con.prepareStatement(sqlstr);
//设置输入参数
ps.setAsciiStream(1,fis,flength);
//获得结果集
rs=ps.executeQuery();
//输出结果集
System.out.println("查询结果：");
while(rs.next())
{
name=rs.getString("name");
age=rs.getString("age");
cno=rs.getInt("classno");
address=rs.getString("address");
telephone=rs.getString("telephone");
System.out.println(name+" "+age+" "+cno+" "+address+" "+telephone);
}
con.close();
}
catch(Exception e)
{
System.out.println(e.getMessage());
e.printStackTrace();
}
}
}