要通过Java程序输出MySQL表的内容,你需要使用JDBC连接到MySQL数据库,并执行相应的查询语句。以下是一个示例代码,可以输出指定表的所有内容:
import java.sql.*; public class Main {public static void main(String[] args) {
String url = “jdbc:mysql://localhost:3306/your_database_name”;
String username = “your_username”;
String password = “your_password”;
try {
Connection conn = DriverManager.getConnection(url, username, password);
Statement stmt = conn.createStatement();
String query = “SELECT * FROM your_table_name”;
ResultSet rs = stmt.executeQuery(query);
while (rs.next()) {
int id = rs.getInt(“id”);
String name = rs.getString(“name”);
int age = rs.getInt(“age”);
System.out.println("ID: " + id);
System.out.println("Name: " + name);
System.out.println("Age: " + age);
System.out.println();
}
rs.close();
stmt.close();
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
} }
将your_database_name
替换为你的数据库名称,your_username
和your_password
分别替换为你的数据库用户名和密码,your_table_name
替换为你要输出内容的表名。运行该程序,就可以输出MySQL表的内容。