ibatis jPetStore也会有个小错?

ibatis jPetStore也会有个小错?

下载ibatis jPetStore看了一下，的确是个学习的好例子,

我运行了一下,用的是mysql,运行到把产品添加到购物车就报错:

com.ibatis.dao.client.template.SqlMapDaoTemplate.queryForObject

(SqlMapDaoTemplate.java: 162 )
      37  more
Caused by: java.sql.SQLException: Duplicate key or integrity 

constraint violation message from server:  " Column 'ITEMID' in field 

list is ambiguous "
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java: 1997 )
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java: 1167 )
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java: 1278 )
    at com.mysql.jdbc.Connection.execSQL(Connection.java: 2247 )
    at com.mysql.jdbc.PreparedStatement.execute

(PreparedStatement.java: 1371 )
    at 

com.ibatis.sqlmap.engine.execution.SqlExecutor.executeQuery

(SqlExecutor.java: 180 )
    at 

com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.sqlExecut

eQuery(GeneralStatement.java: 205 )
    at 

com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQu

eryWithCallback(GeneralStatement.java: 173 )
      43  more

查了半天原来是配置文件查询的地方有的小错误。

   < select  id = "getItem" resultClass = "item" parameterClass = "string" cacheModel = "quantityCache" >
     select
//默认里面少了个”I“。。。。。
         I . ITEMID,
      LISTPRICE,
      UNITCOST,
      SUPPLIER  AS  supplierId,
      I.PRODUCTID  AS  "product.productId",
      NAME  AS  "product.name",
      DESCN  AS  "product.description",
      CATEGORY  AS  "product.categoryId",
      STATUS,
      ATTR1  AS  attribute1,
      ATTR2  AS  attribute2,
      ATTR3  AS  attribute3,
      ATTR4  AS  attribute4,
      ATTR5  AS  attribute5,
      QTY  AS  quantity
     from  ITEM I, INVENTORY V, PRODUCT P
     where  P.PRODUCTID  =  I.PRODUCTID
       and  I.ITEMID  =  V.ITEMID
       and  I.ITEMID  =  #value#
   </ select >