1 public class DBUtil { 2 private static final String DBDRIVER = "com.mysql.jdbc.Driver"; 3 4 //注意这里的数据库名需要修改成你自己操作的数据库 5 private static final String DBURL = "jdbc:mysql://localhost:3306/movie?serverTimezone=GMT%2B8" + 6 "&characterEncoding=utf8&useUnicode=true&useSSl=false"; 7 private static final String DBUSER = "root"; 8 private static final String DBPASSWORD = "root"; 9 10 11 //获取数据库连接对象 12 public static Connection getConnection() { 13 Connection conn = null; 14 try { 15 Class.forName(DBDRIVER); 16 conn = DriverManager.getConnection(DBURL, DBUSER, DBPASSWORD); 17 } catch (Exception e) { 18 e.printStackTrace(); 19 } 20 return conn; 21 } 22 23 //关闭资源连接 24 public static void closeAll(ResultSet rs, Statement stmt, Connection conn) { 25 if(rs != null) { 26 try { 27 rs.close(); 28 } catch (Exception e) { 29 // TODO Auto-generated catch block 30 e.printStackTrace(); 31 } 32 } 33 if(stmt != null) { 34 try { 35 stmt.close(); 36 } catch (Exception e) { 37 // TODO Auto-generated catch block 38 e.printStackTrace(); 39 } 40 } 41 if(conn != null) { 42 try { 43 conn.close(); 44 } catch (Exception e) { 45 // TODO Auto-generated catch block 46 e.printStackTrace(); 47 } 48 } 49 } 50 51 //创建数据库操作对象(PreparedStatement对象) 52 public static PreparedStatement getPreparedStatement(Connection conn, String sql) { 53 PreparedStatement pstmt = null; 54 try { 55 pstmt = conn.prepareStatement(sql); 56 } catch (Exception e) { 57 e.printStackTrace(); 58 } 59 return pstmt; 60 } 61 62 //创建数据库操作对象(Statement对象) 63 public static Statement getStatement(Connection conn) { 64 Statement stmt = null; 65 try { 66 stmt = conn.createStatement(); 67 } catch (Exception e) { 68 e.printStackTrace(); 69 } 70 return stmt; 71 } 72 73 74 //封装更新操作语句 75 public static int executeDML(String sql, Object...objs) { 76 int rows = 0; 77 Connection conn = null; 78 PreparedStatement pstmt = null; 79 try { 80 conn = getConnection(); 81 pstmt = getPreparedStatement(conn, sql); 82 for (int i = 0; i < objs.length; i++) { 83 pstmt.setObject(i + 1, objs[i]); 84 } 85 rows = pstmt.executeUpdate(); 86 } catch (Exception e) { 87 e.printStackTrace(); 88 } finally { 89 closeAll(null, pstmt, conn); 90 } 91 return rows; 92 } 93 }