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fuzzy query and fuzzy matching of user's input selection #37

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fuzzy query and fuzzy matching of user's input selection #37

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9c21984
Goods Fuzzy Query
1183710110SYW Aug 6, 2021
b4b6c36
Fuzzy query
1183710110SYW Aug 6, 2021
b476af7
choice.toUpperCase
1183710110SYW Aug 6, 2021
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44 changes: 22 additions & 22 deletions 0#Java基础项目/shopping-management-system/src/lyons/dao/GoodsDao.java
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,7 @@
import lyons.tools.ScannerChoice;

/**
* ���ݿ�goods������
* 数据库goods表操作
* @author lyons(zhanglei)
*/
public final class GoodsDao
Expand All @@ -22,8 +22,8 @@ public final class GoodsDao
ResultSet rs = null;

/**
* 1.������Ʒ�����ݿ�goods��
* @param goods ��Ʒ����
* 1.添加商品到数据库goods表
* @param goods 商品对象
* @return boolean
*/
public boolean addGoods(Goods goods)
Expand Down Expand Up @@ -55,9 +55,9 @@ public boolean addGoods(Goods goods)
}

/**
* 2.������Ʒ��Ϣ�����ݿ�goods��
* @param key ѡ��Ҫ������Ʒ��Ϣ
* @param goods ��Ʒ����
* 2.更改商品信息到数据库goods表
* @param key 选择要更改商品信息
* @param goods 商品对象
* @return boolean
*/
public boolean updateGoods(int key,Goods goods)
Expand All @@ -66,7 +66,7 @@ public boolean updateGoods(int key,Goods goods)
conn = DbConn.getconn();
switch (key)
{
case 1: // key=1,������Ʒ����
case 1: // key=1,更改商品名称
String sqlName = "UPDATE GOODS SET GNAME=? WHERE GID=?";

try
Expand All @@ -87,7 +87,7 @@ public boolean updateGoods(int key,Goods goods)
DbClose.addClose(pstmt,conn);
}
break;
case 2: // key=2,������Ʒ�۸�
case 2: // key=2,更改商品价格
String sqlPrice = "UPDATE GOODS SET GPRICE=? WHERE GID=?";

try
Expand All @@ -108,7 +108,7 @@ public boolean updateGoods(int key,Goods goods)
DbClose.addClose(pstmt,conn);
}
break;
case 3: // key=3,������Ʒ����
case 3: // key=3,更改商品数量
String sqlNum = "UPDATE GOODS SET GNUM=? WHERE GID=?";

try
Expand Down Expand Up @@ -136,8 +136,8 @@ public boolean updateGoods(int key,Goods goods)
}

/**
* 3.�����ݿ�goods����-�h����Ʒ
* @param gid ��Ʒ���
* 3.从数据库goods表中-刪除商品
* @param gid 商品编号
* @return boolean
*/
public boolean deleteGoods(int gid)
Expand Down Expand Up @@ -165,8 +165,8 @@ public boolean deleteGoods(int gid)
}

/**
*4.��ѯ��Ʒ��Ϣ
* @param key ��ѯ��ʽ
*4.查询商品信息
* @param key 查询方式
* @return ArrayList<Goods>
*/
public ArrayList<Goods> queryGoods(int key)
Expand All @@ -177,7 +177,7 @@ public ArrayList<Goods> queryGoods(int key)
switch (key)
{
case 1:
// key=1��Ʒ ���� �����ѯ
// key=1商品 数量 升序查询
String sqlGnum = "SELECT * FROM GOODS ORDER BY GNUM ASC";
try
{
Expand All @@ -202,7 +202,7 @@ public ArrayList<Goods> queryGoods(int key)
}
break;
case 2:
// key=2��Ʒ �۸� �����ѯ
// key=2商品 价格 升序查询
String sqlGprice = "SELECT * FROM GOODS ORDER BY GPRICE ASC";
try
{
Expand All @@ -227,8 +227,8 @@ public ArrayList<Goods> queryGoods(int key)
}
break;
case 3:
// key=3��Ʒ �ؼ��� ��ѯ
String nameGet = ScannerChoice.ScannerInfoString();
// key=3商品 关键字 查询
String nameGet = "%"+ScannerChoice.ScannerInfoString()+"%";
String sqlGname = "SELECT * FROM GOODS WHERE GNAME LIKE '%'||?||'%'";
try
{
Expand Down Expand Up @@ -260,7 +260,7 @@ public ArrayList<Goods> queryGoods(int key)
}

/**
*5.��ʾ������Ʒ��Ϣ
*5.显示所有商品信息
* @return ArrayList<Goods>
*/
public ArrayList<Goods> displayGoods()
Expand All @@ -278,11 +278,11 @@ public ArrayList<Goods> displayGoods()
{
int gid = rs.getInt(1);
String gname = rs.getString(2);
double gprice = rs.getDouble("gprice"); //˫����+������,Ҳ�������ֱ�ʾ.
double gprice = rs.getDouble("gprice"); //双引号+主键名,也可用数字表示.
int gnum = rs.getInt(4);

Goods goods = new Goods(gid,gname,gprice,gnum); //����Goods���󣬲���ֵ.
goodsList.add(goods); //������Ϣ����̬������.
Goods goods = new Goods(gid,gname,gprice,gnum); //创建Goods对象，并赋值.
goodsList.add(goods); //添加信息到动态数组中.
}
} catch (SQLException e)
{
Expand All @@ -295,4 +295,4 @@ public ArrayList<Goods> displayGoods()

}

}
}
60 changes: 30 additions & 30 deletions 0#Java基础项目/shopping-management-system/src/lyons/tools/QueryPrint.java
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@
import lyons.entity.SalesMan;

/**
* ��ѯ&&��ӡ ��������(�����Ż����ܻ�ɾ)
* 查询&&打印 函数工具(后期优化可能会删)
*@author lyons(zhanglei)
*/

Expand All @@ -24,61 +24,61 @@ public final class QueryPrint
ResultSet rs = null;

/**
* ģ����ѯ�����в�ѯ��Ϣ����С����
* @param oper ������
* @return ��ѯ������Ϣ��gid,�������ֵ����-1���������ѯ�쳣��
* 模糊查询并陈列查询信息函数小工具
* @param oper 调用者
* @return 查询到的信息的gid,如果返回值等于-1，则代表查询异常。
*/
public static int query(String oper)
{
int gid = -1;
String shopping = ScannerChoice.ScannerInfoString(); //���̻�ȡ��Ʒ����
ArrayList<Goods> goodsList = new QueryPrint().queryGoodsKey(-1,shopping); //���ݼ��̻�ȡ����Ʒ�����{�� ��ȷ��ѯ�������_���Ñ���Ҫ����������
String shopping = ScannerChoice.ScannerInfoString(); //键盘获取商品名字
ArrayList<Goods> goodsList = new QueryPrint().queryGoodsKey(-1,shopping); //根据键盘获取的商品名字調用 精确查询函数，確定用戶所要操作的数据
if (goodsList == null || goodsList.size() <= 0)
{
System.err.println("\t�������޴���Ʒ ����");
System.err.println("\t！！查无此商品 ！！");

//�{��ѡ����һ������
//調用选择下一步函数
ScannerChoice.changedInfoNext(oper);

}else //�鵽�д���Ʒ��ʵ�ֽ��� ������Ʒ ��Ϣ������
}else //查到有此商品，实现进行 更改商品 信息操作！
{
Goods goods = goodsList.get(0);

System.out.println("\t\t\t\t\t��Ʒ�б�\n\n");
System.out.println("\t��Ʒ���\t\t��Ʒ����\t\t��Ʒ�۸�\t\t��Ʒ����\t\t��ע\n");
System.out.println("\t\t\t\t\t商品列表\n\n");
System.out.println("\t商品编号\t\t商品名称\t\t商品价格\t\t商品数量\t\t备注\n");
System.out.print("\t"+goods.getGid()+"\t\t"+goods.getGname()+"\t\t"+goods.getGprice()+"\t\t"+goods.getGnum());
if (goods.getGnum()==0)
{
System.out.println("\t\t����Ʒ���ۿ�");
System.out.println("\t\t该商品已售空");
}else if (goods.getGnum()<10)
{
System.out.println("\t\t����Ʒ�Ѳ���10��");
System.out.println("\t\t该商品已不足10件");
}else
{
System.out.println("\t\t-");
}
gid = goods.getGid(); //����Ʒ��ŷ��ظ�������
gid = goods.getGid(); //将商品编号返回给调用者
}
return gid;
}

/**
* ģ����ѯ����С����
* @return int ����Ʒ��������ֻ��һ��ʱ������Ʒgid�ţ���Ʒ���ۿ�ʱ���� -1. >1��ʱ����-2 . ���޴���Ʒʱ����-3
* 模糊查询函数小工具
* @return int 当商品件数有且只有一件时返回商品gid号，商品已售空时返回 -1. >1件时返回-2 . 查无此商品时返回-3
*
*/
public static int querySettlement()
{
int gid = -1;
ArrayList<Goods> goodsSettlement = new GoodsDao().queryGoods(3);//�{�� �ؼ��ֲ�ѯ����
ArrayList<Goods> goodsSettlement = new GoodsDao().queryGoods(3);//調用 关键字查询函数
if (goodsSettlement == null || goodsSettlement.size() <= 0)
{
System.err.println("\t�������޴���Ʒ ����\n");
System.err.println("\t！！查无此商品 ！！\n");
gid = -3;
}else //�鵽�д���Ʒ��ʵ�ֽ��� ������Ʒ ��Ϣ������
}else //查到有此商品，实现进行 更改商品 信息操作！
{
System.out.println("\t\t\t\t\t��Ʒ�б�\n\n");
System.out.println("\t��Ʒ���\t\t��Ʒ����\t\t��Ʒ�۸�\t\t��Ʒ����\t\t��ע\n");
System.out.println("\t\t\t\t\t商品列表\n\n");
System.out.println("\t商品编号\t\t商品名称\t\t商品价格\t\t商品数量\t\t备注\n");
for (int i = 0; i < goodsSettlement.size(); i++)
{
Goods goods = goodsSettlement.get(i);
Expand All @@ -88,17 +88,17 @@ public static int querySettlement()

if (goods.getGnum()==0)
{
System.out.println("\t\t����Ʒ���ۿ�");
System.out.println("\t\t该商品已售空");
}else if (goods.getGnum()<10)
{
System.out.println("\t\t����Ʒ�Ѳ���10��");
System.out.println("\t\t该商品已不足10件");
}else
{
System.out.println("\t\t-");
}
if (goodsSettlement.size()==1)
{
gid = goods.getGid(); //����Ʒ��ŷ��ظ�������
gid = goods.getGid(); //将商品编号返回给调用者
}else
{
gid = -2;
Expand All @@ -111,9 +111,9 @@ public static int querySettlement()


/**
* ������Ʒ gid or gName��ѯ��Ʒ
* @param ��Ʒid,��Ʒ����
* @return ��Ʒ��Ϣ
* 根据商品 gid or gName查询商品
* @param 商品id,商品名称
* @return 商品信息
*/
public ArrayList<Goods> queryGoodsKey(int gId,String gName)
{
Expand All @@ -125,7 +125,7 @@ public ArrayList<Goods> queryGoodsKey(int gId,String gName)
{
pstmt = conn.prepareStatement(sql);
pstmt.setInt(1, gId);
pstmt.setString(2, gName);
pstmt.setString(2, "%"+gName+"%");
rs = pstmt.executeQuery();
while (rs.next())
{
Expand All @@ -148,8 +148,8 @@ public ArrayList<Goods> queryGoodsKey(int gId,String gName)
}

/**
* ��ȷ��ѯ�ۻ�Ա��Ϣ
* @param �ۻ�Ա����
* 精确查询售货员信息
* @param 售货员名字
* @return
*/
public ArrayList<SalesMan> querySalesMan(String sName)
Expand Down
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