访问sql server数据库
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 | package org.springblade.consumption.utils; import org.springblade.consumption.constant.ConsumptionConstant; import org.springblade.core.tool.utils.Func; import java.sql.*; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; public class ConsumptionUtil { /** * 消费机模块 连接数据库获取信息 * @return */ public static List<Map<String,Object>> getSqlResult(String sql,Map<String,String>map){ List<Map<String,Object>> list = new ArrayList(); try { //一开始必须填一个已经存在的数据库 String url = ConsumptionConstant.url; Connection conn = DriverManager.getConnection(url, ConsumptionConstant.userName, ConsumptionConstant.password); // 连接数据库 //Statement stat = conn.createStatement();//创建一个 Statement 对象来将 SQL 语句发送到数据库。 PreparedStatement stat = conn.prepareStatement(sql); if (Func.isNotEmpty(map)){ //餐别 if (map.containsKey( "mealType" )){ stat.setString( 1 , map.get( "mealType" )); } //消费时间 if (map.containsKey( "date" )){ stat.setDate( 2 ,Date.valueOf(map.get( "date" ))); } } ResultSet resultSet=stat.executeQuery(); ResultSetMetaData md = resultSet.getMetaData(); int columnCount = md.getColumnCount(); while (resultSet.next()) { Map<String,Object> rowData = new HashMap(); for ( int i = 1 ; i <= columnCount; i++) { rowData.put(md.getColumnName(i), resultSet.getObject(i)); } list.add(rowData); } System.out.println( "list=====" +list); resultSet.close(); } catch (Exception e) { e.printStackTrace(); } return list; } } package org.springblade.consumption.utils; import org.springblade.consumption.constant.ConsumptionConstant; import org.springblade.core.tool.utils.Func; import java.sql.*; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; public class ConsumptionUtil { /** * 消费机模块 连接数据库获取信息 * @return */ public static List<Map<String,Object>> getSqlResult(String sql,Map<String,String>map){ List<Map<String,Object>> list = new ArrayList(); try { //一开始必须填一个已经存在的数据库 String url = ConsumptionConstant.url; Connection conn = DriverManager.getConnection(url, ConsumptionConstant.userName, ConsumptionConstant.password); // 连接数据库 //Statement stat = conn.createStatement();//创建一个 Statement 对象来将 SQL 语句发送到数据库。 PreparedStatement stat = conn.prepareStatement(sql); if (Func.isNotEmpty(map)){ //餐别 if (map.containsKey( "mealType" )){ stat.setString( 1 , map.get( "mealType" )); } //消费时间 if (map.containsKey( "date" )){ stat.setDate( 2 ,Date.valueOf(map.get( "date" ))); //转换成java sql类型 } } ResultSet resultSet=stat.executeQuery(); ResultSetMetaData md = resultSet.getMetaData(); int columnCount = md.getColumnCount(); while (resultSet.next()) { Map<String,Object> rowData = new HashMap(); for ( int i = 1 ; i <= columnCount; i++) { rowData.put(md.getColumnName(i), resultSet.getObject(i)); } list.add(rowData); } System.out.println( "list=====" +list); resultSet.close(); } catch (Exception e) { e.printStackTrace(); } return list; } } |
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