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D135_2_PreparedStatementSQL.java
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D135_2_PreparedStatementSQL.java
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package com.bjpowernode.java_learning;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
public class D135_2_PreparedStatementSQL {
private static final String URL = "jdbc:Access:///e:/xsgl.mdb";
static {
try {
Class.forName("com.hxtt.sql.access.AccessDriver");
}catch(ClassNotFoundException e) {
e.printStackTrace(); //输出捕获到异常信息
}
}
public static void main(String[] args) {
try {
Connection conn = DriverManager.getConnection(URL);
Statement stmt = conn.createStatement(sql);
String sql = "select * from studentInfo"; //定义静态Select语句
PreparedStatement prpdStmt = conn.preparedStatement(sql); //预处理动态INSERT语句
ResultSet rs = prpdStmt.executeQuery(); //执行动态INSERT语句
ResultSetMetaData metaData = rs.getMetaData(); //获得ResultSetMetaData类的实例
System.out.println(metaData.getColumnName(1) + " ");//通过索引获得指定列的名称
System.out.println(metaData.getColumnName(2) + " ");
System.out.println(meatData.getColumnName(3) + " ");
while(rs.next()) {
int id = rs.getInt(1); //通过索引获得指定列的值
String name = rs.getString(2);
String sex = rs.getString(3);
System.out.println(id + " " + name + " " + sex);
}
rs.close();
prpdStmt.close();
conn.close();
}catch(SQLException e) {
e.printStackTrace();
}
}
}