Java Code Examples for com.mysql.jdbc.Statement#executeUpdate()
The following examples show how to use
com.mysql.jdbc.Statement#executeUpdate() .
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Example 1
Source File: UserDao.java From StudentManagement with MIT License | 6 votes |
public User register(String username,String password,String level) { Connection conn = DBUtils.getConnection(); User user = null; try { //判断数据库中是否存在该用户 if(!userIsExist(username)){//不存在该用户,可以注册 user = new User();//实例化一个user对象 //给用户对象赋值 user.setUsername(username); user.setPassword(password); user.setLevel(level); //将用户对象写入数据库 Statement stmt = (Statement) conn.createStatement(); stmt.executeUpdate("insert into user values('"+username+"','"+password+"','"+level+"');"); stmt.close();//释放资源 } } catch (Exception e) { e.printStackTrace(); }finally { DBUtils.closeConnection(conn); } return user; }
Example 2
Source File: ConnMysql.java From Leo with Apache License 2.0 | 6 votes |
/** * 说明:用于执行插入、更新、删除的sql语句,当受影响的行数为0和执行失败时返回false * * @param sql * @return boolean 成功返回true,失败返回false */ public boolean excSql(String sql) { if (con == null) getConnection(); // 连接到数据库 try { Statement st = (Statement) con.createStatement(); // 创建用于执行静态sql语句的Statement对象 int counts = st.executeUpdate(sql); // 执行操作的sql语句 if (0 == counts) { log.info("执行成功,,共0条数据受到影响,没有完成操作!:SQL语句-->【" + sql + "】"); return false; } log.info("执行成功,共" + counts + "条数据受到影响:" + "SQL语句-->【" + sql + "】"); return true; } catch (SQLException e) { log.error("执行失败:SQL语句-->【" + sql + "】"); log.error(e.getMessage()); return false; } }