java sql JDBC-优快云博客

本文提供了一个使用 Java JDBC 连接 MySQL 数据库并进行增删查改操作的示例代码。示例中定义了数据库连接参数，并展示了如何插入一条记录以及查询所有记录。

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public class JDBCText {

private final static String URL = "jdbc:mysql://localhost:3306/market?useUnicode=true&characterEncoding=UTF-8";
private final static String USER = "root";
private final static String PASSWORD = "root";

static {
try {
Class.forName("com.mysql.jdbc.Driver");
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}

public static Connection getConnection() {
Connection conn = null;
try {
conn = DriverManager.getConnection(URL, USER, PASSWORD);
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return conn;

}

public static void main(String[] args) {

Connection conn=getConnection();
String sql="insert into shop(SpName)values (?);";
try {
PreparedStatement pstatem=conn.prepareStatement(sql);
pstatem.setObject(1, "卫生巾");
pstatem.executeUpdate();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

String sql="select * from shop";
PreparedStatement pres=conn.prepareStatement(sql);
ResultSet rs=pres.executeQuery();
while(rs.next()){
int id=rs.getInt("id");
String SpName=rs.getString("SpName");
System.out.println("id:"+id+"\t"+"SpName:"+SpName);
}

}