import java.sql.*; import java.text.DateFormat; //数据库的查询 public class SelectTable { String dbDriver="com.mysql.jdbc.Driver"; String dbUrl="jdbc:mysql://localhost:3306/sss";//根据实际情况变化 String username="root"; String password="123"; public Connection getConn() { Connection conn=null; try { Class.forName(dbDriver); } catch (ClassNotFoundException e) { e.printStackTrace(); } try { conn = DriverManager.getConnection(dbUrl,username,password);//注意是三个参数 } catch (SQLException e) { e.printStackTrace(); } return conn; } public void select(){ Connection conn = getConn(); try{ Statement stmt = conn.createStatement(); //创建Statement对象 System.out.println("成功连接到数据库！"); String sql = "select * from jdbc"; //要执行的SQL ResultSet rs = stmt.executeQuery(sql);//创建数据对象 System.out.println("id"+"t"+"name"+"t"+"brithday"); while (rs.next()){ System.out.print(rs.getInt(1) + "t"); System.out.print(rs.getString(2) + "t"); System.out.print(rs.getDate(3) + "t"); System.out.println(); } }catch(Exception e){ e.printStackTrace(); } } public void insert(){ Connection conn = getConn(); try{ Statement stmt = conn.createStatement(); System.out.println("成功连接到数据库！"); String sql = "insert into jdbc (id,name,birthday) values("; PreparedStatement pst =conn.prepareStatement(sql); DateFormat df = DateFormat.getDateInstance(); java.util.Date dd = df.parse("2000-12-12");//将YYYY-MM-DD格式的时间转换为date long t = dd.getTime(); java.sql.Date date = new java.sql.Date(t); pst.setInt(1, 5); pst.setString(2, "limazhi"); pst.setDate(3, date); pst.executeUpdate(); select(); }catch(Exception e){ e.printStackTrace(); } } public static void main(String args[]){ SelectTable st = new SelectTable(); st.insert(); } }
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