首页 > 代码库 > JDBC批量操作

JDBC批量操作

2024-11-23 09:38:39   202人阅读

 /** 
         * 批量执行预定义模式的SQL 
         */ 
        public static void exeBatchParparedSQL() { 
                Connection conn = null; 
                try { 
                        conn = DBToolkit.getConnection(); 
                        String sql = "insert into testdb.book (kind, name) values (?,?)"; 
                        PreparedStatement pstmt = conn.prepareStatement(sql); 
                        pstmt.setString(1, "java"); 
                        pstmt.setString(2, "jjjj"); 
                        pstmt.addBatch();                     //添加一次预定义参数 
                        pstmt.setString(1, "ccc"); 
                        pstmt.setString(2, "dddd"); 
                        pstmt.addBatch();                     //再添加一次预定义参数 
                        //批量执行预定义SQL 
                        pstmt.executeBatch(); 
                } catch (SQLException e) { 
                        e.printStackTrace(); 
                } finally { 
                        DBToolkit.closeConnection(conn); 
                } 
        } 

        /** 
         * 批量执行混合模式的SQL、有预定义的，还有静态的 
         */ 
        public static void exeBatchMixedSQL() { 
                Connection conn = null; 
                try { 
                        conn = DBToolkit.getConnection(); 
                        String sql = "insert into testdb.book (kind, name) values (?,?)"; 
                        PreparedStatement pstmt = conn.prepareStatement(sql); 
                        pstmt.setString(1, "java"); 
                        pstmt.setString(2, "jjjj"); 
                        pstmt.addBatch();    //添加一次预定义参数 
                        pstmt.setString(1, "ccc"); 
                        pstmt.setString(2, "dddd"); 
                        pstmt.addBatch();    //再添加一次预定义参数 
                        //添加一次静态SQL 
                        pstmt.addBatch("update testdb.book set kind = ‘JAVA‘ where kind=‘java‘"); 
                        //批量执行预定义SQL 
                        pstmt.executeBatch(); 
                } catch (SQLException e) { 
                        e.printStackTrace(); 
                } finally { 
                        DBToolkit.closeConnection(conn); 
                } 
        } 

        /** 
         * 执行批量静态的SQL 
         */ 
        public static void exeBatchStaticSQL() { 
                Connection conn = null; 
                try { 
                        conn = DBToolkit.getConnection(); 
                        Statement stmt = conn.createStatement(); 
                        //连续添加多条静态SQL 
                        stmt.addBatch("insert into testdb.book (kind, name) values (‘java‘, ‘java in aciton‘)"); 
                        stmt.addBatch("insert into testdb.book (kind, name) values (‘c‘, ‘c in aciton‘)"); 
                        stmt.addBatch("delete from testdb.book where kind =‘C#‘"); 
                        stmt.addBatch("update testdb.book set kind = ‘JAVA‘ where kind=‘java‘"); 
//                        stmt.addBatch("select count(*) from testdb.book");                //批量执行不支持Select语句 
                        //执行批量执行 
                        stmt.executeBatch(); 
                } catch (SQLException e) { 
                        e.printStackTrace(); 
                } finally { 
                        DBToolkit.closeConnection(conn); 
                } 
        } 
来源： <http://lavasoft.blog.51cto.com/62575/238651/>
 ?上面三种方法都是实质上都是用来addBatch(),executeBatch(),方法，PreparedStatement 是Statement 子类。如果只有insert时完全可以在values后面跟多个(),()……的形式插入多条记录。自增长ID默认可以不插入，但也可以赋值插入或更新。

来自为知笔记(Wiz)


JDBC批量操作


联系
我们