JDBC 小程序

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class TestJdbc {
public static void main(String[] args) {
ResultSet rs = null;
Statement stmt = null;
Connection conn = null;

try {
Class.forName("com.mysql.jdbc.Driver");
conn = (Connection) DriverManager.getConnection("jdbc:mysql://localhost/mysql?" + "user=root&password=huimie");
stmt = conn.createStatement();
rs = stmt.executeQuery("select * from tablename1");

while (rs.next()) {
// 根據字段名獲取相應的值
String name = rs.getString("name");
String sex = rs.getString("sex");
int age = rs.getInt("age");

// 輸出查到的記錄的各個字段的值
System.out.println(name + " " + sex + " " + age);
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
} finally {
try {
if (rs != null) {
rs.close();
rs = null;
}
if (stmt != null) {
stmt.close();
stmt = null;
}
if (conn != null) {
conn.close();
conn = null;
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}

這是運行的結果

這是我mysql中的tablename1表中的數據