update

推送20天前修改的代码（忘记推送了）主要是删除不必要的文件。
ruohuaqi · Oct 9, 2016 · a5fc0e1 · a5fc0e1
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diff --git a/2#Java入门项目/lyons.eaby.new/.gitignore b/2#Java入门项目/lyons.eaby.new/.gitignore
diff --git a/2#Java入门项目/lyons.eaby.new/WebRoot/WEB-INF/classes/log4j.properties b/2#Java入门项目/lyons.eaby.new/WebRoot/WEB-INF/classes/log4j.properties
@@ -0,0 +1,6 @@
+log4j.rootLogger=debug,Console
+
+log4j.appender.Console=org.apache.log4j.ConsoleAppender
+log4j.appender.Console.layout=org.apache.log4j.PatternLayout
+log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n
+log4j.logger.org.apache=debug
diff --git a/2#Java入门项目/lyons.eaby.new/WebRoot/WEB-INF/classes/resources/MybatisConfiguration.xml b/2#Java入门项目/lyons.eaby.new/WebRoot/WEB-INF/classes/resources/MybatisConfiguration.xml
@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+
+<!DOCTYPE configuration
+    PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
+    "http://mybatis.org/dtd/mybatis-3-config.dtd">
+
+<configuration>
+<!--  
+  <settings>
+    <setting name="useGeneratedKeys" value="false"/>
+    <setting name="useColumnLabel" value="true"/>
+  </settings>
+
+  <typeAliases>
+    <typeAlias alias="UserAlias" type="org.apache.ibatis.submitted.complex_property.User"/>
+  </typeAliases>
+
+-->
+
+<!-- mybatis默认自动关闭数据库连接  关于mybatis详细资料：http://www.mybatis.org/mybatis-3/zh/configuration.html -->
+
+  <environments default="development">
+    <environment id="development">
+      <transactionManager type="JDBC">
+        <property name="" value=""/>
+      </transactionManager>
+      <!-- 连接本地oracle数据库信息 -->
+      <dataSource type="UNPOOLED">
+        <property name="driver" value="oracle.jdbc.driver.OracleDriver"/>
+        <property name="url" value="jdbc:oracle:thin:@localhost:1521:orcl"/>
+        <property name="username" value="scott"/>
+        <property name="password" value="tiger"/>
+      </dataSource>
+    </environment>
+  </environments>
+
+<!-- 整合资源，将其他的配置文件添加进 ,路径也是从src写起-->
+  <mappers>
+    <mapper resource="resources/sql/Goods.xml"/>
+    <mapper resource="resources/sql/Order.xml"/>
+    <mapper resource="resources/sql/Classify.xml"/>
+  <mapper resource="resources/sql/User.xml"/>  
+  </mappers>
+
+</configuration>
diff --git a/2#Java入门项目/lyons.eaby.new/WebRoot/WEB-INF/classes/resources/sql/Classify.xml b/2#Java入门项目/lyons.eaby.new/WebRoot/WEB-INF/classes/resources/sql/Classify.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper
+    PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+    "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+
+<mapper namespace="lyons.dao.GoodsClassifyDao">
+
+	  <resultMap type="lyons.goods.entity.GoodsClassify" id="ClassifyResult">  
+	    <id column="id" jdbcType="INTEGER" property="id"/>
+	    <result column="gname" jdbcType="VARCHAR" property="gname"/>
+
+	    <!-- 作为子表时使用该标签(多对一)。与collection语法一致
+	        <association property="#" resultMap=""/>
+	    -->
+	  </resultMap>
+
+       <!-- <sql id="columns"></sql> -->
+</mapper>
diff --git a/2#Java入门项目/lyons.eaby.new/WebRoot/WEB-INF/classes/resources/sql/Goods.xml b/2#Java入门项目/lyons.eaby.new/WebRoot/WEB-INF/classes/resources/sql/Goods.xml
@@ -0,0 +1,186 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper
+    PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+    "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+
+<mapper namespace="lyons.dao.GoodsDao"><!-- 面向接口编程。与此类关联，作为空间名 -->
+
+    <!-- 数据库中Goods表与javaBean的变量名对应关系 -->
+	<!-- type:对应java对应表的实体类名  id:别名（可以与select等的id重名）-->
+	  <resultMap type="lyons.goods.entity.Goods" id="GoodsResult">  
+
+<!-- (id:数据库表主键 result：数据库表普通的列)  property：javaBean中字段对应的变量名字-->
+<!-- column：与查询的列名相同并非数据库里面的列名。比如select id a from 表名 查询的列名用了别名a那么就得对应的修改column="a"-->
+	    <id column="commodity_number" jdbcType="INTEGER" property="commodity_number"/>
+	    <result column="commodity_name" jdbcType="VARCHAR" property="commodity_name"/>
+	    <result column="commodity_made" jdbcType="VARCHAR" property="commodity_made"/>
+	    <result column="commodity_price" jdbcType="DOUBLE" property="commodity_price"/>
+	    <result column="commodity_balance" jdbcType="INTEGER" property="commodity_balance"/>
+	    <result column="commodity_pic" jdbcType="VARCHAR" property="commodity_pic"/>
+	    <result column="commodity_id" jdbcType="INTEGER" property="commodity_id"/>
+
+<!-- 作为主表时使用该标签。 collection：代表对应一个集合  resultMap：引用Classify.XML的映射关系 配置这个的原因是引用子表查询了 -->    
+	    <collection property="goodsClassifyList" resultMap="lyons.dao.GoodsClassifyDao.ClassifyResult" /><!-- 一对多 空间名.id -->
+
+	  </resultMap>
+
+
+
+	  <!-- 定义常量 。写出查询的列代替*效率高-->
+	  <sql id="columns">SELECT commodity_number,commodity_name,commodity_made,commodity_price,commodity_balance,commodity_pic,commodity_id
+	                    FROM commodity
+	  </sql>
+
+	<!-- 解释： id：为该sql语句起一个名字（用于SqlFaction调用该sql语句）resultMap：对应上述resultMap的id -->
+	       <!-- select查出来的信息放到<resultMap>对应的property变量名中 -->
+		<select id="goodsAllList"  resultMap="GoodsResult">
+		   <include refid="columns"/> <!-- 引用<sql>中定义的常量 -->
+		</select>
+                <!-- "src/resources/MybatisConfiguration.xml" parameterType:根据条件查询，传递来的参数的类型 -->
+		<select id="queryGoodsByKey" parameterType="String" resultMap="GoodsResult">
+		   <include refid="columns"/>   
+		    WHERE commodity_name LIKE '%'|| #{_parameter} ||'%'
+		</select>
+
+
+		<!-- （关键字||分类）or（关键字&&分类） 查询 --> <!-- 多表联立不用别名是为了方便，详情见上面配置column加的注释 -->
+		<!-- 如果引用了外表，并且与主表的查询的列名相同，那么就不得不使用别名加以区分。目的：防止查询的列在column中多对一 -->
+		<select id="queryGoodsByKeyClassify" parameterType="lyons.goods.entity.Goods" resultMap="GoodsResult">
+				  <include refid="columns"/> 
+				  INNER JOIN classify  
+			      ON commodity.commodity_id = classify.gid
+
+		        <if test="commodity_name != null and !(&quot;&quot;.equals(commodity_name.trim()))">
+		           AND commodity.commodity_name LIKE '%'|| #{commodity_name} ||'%'
+		        </if>
+		        <if test="commodity_id > 0" >
+		           AND commodity.commodity_id = #{commodity_id} 
+		        </if>
+		</select>
+
+    <!-- 批量更新商品数量 -->
+	<update id="updateGoods"  parameterType="java.util.List">
+
+		begin  
+	        <foreach collection="list" item="item" index="index" separator=";" > 
+	            update commodity 
+	            <set>
+		            <if test="item.commodity_balance!=null and item.commodity_balance!=''">
+		                commodity_balance = ${item.commodity_balance},
+		            </if>
+	            </set>
+	               where commodity_number = ${item.commodity_number}
+	            </foreach>
+        ;end;
+
+    </update>
+
+
+<!--  
+		<delete id="deleteOneGoodsById" parameterType="int">
+		  DELECT FROM commodity 
+		  where commodity_number = #{_parameter}
+		</delete>
+
+
+
+        <update id="#" parameterType="lyons.goods.entity.Goods">
+            UPDATE commodity 
+            <set>  与where标签效果一样 
+	            <if test="#">
+	               
+	            </if>
+	            <if test="#" >
+	               
+	            </if>
+            </set>
+        </update>
+-->            
+
+        <!-- 使用自增主键的方法 useGeneratedKeys设置为true keyProperty：存储到的数据库中字段对应的java实体类的变量名-->
+ <!--   <insert id="#" parameterType="lyons.goods.entity.Goods" useGeneratedKeys="true" keyProperty="commodity_number">
+        
+        </insert>
+ --> 
+
+<!-- 知识扩充 -->
+
+<!-- 多功能的拼接条件，会了语法，自己去创造神奇.本项目中暂不使用大招 -->
+<!-- <trim prefix="where" prefixOverrides="and|or" suffixOverrides="">
+        </trim>
+-->
+
+<!-- 实现switch case -->
+<!--  
+    <choose>
+        <when test=""></when>
+        <when test=""></when>
+        <otherwise></otherwise>
+    </choose>
+-->
+
+<!-- 
+      客官，<select><update>等等查询语句中的 resultMap 可以用resultType代替，你造吗？
+      这样的话就不用在xml中配置resultMap了，它会根据resultType="实体类名"中的变量名自动匹配
+     但是，但是，，，技能受限，不能用别名了
+ -->
+
+<!-- 
+    TypeHandler=""  可以转换数据类型，达到数据库中的字段与java实体类中字段的转换后对应
+-->
+
+<!-- 
+                xxxMap xxxType
+       这两个家门狗族是不是总是傻傻分不清？请看虐狗大招：
+       
+       Map系 ：与配置映射关系有关
+       Type系：与java类型有关。
+ -->
+
+ <!--  
+        ${} 不是预编译的，而是直接赋值传进来的值
+        区别于预编译 #{} 
+  -->
+
+
+
+<!--  
+  <select id="version" parameterType="long" resultType="int">
+    SELECT version FROM user WHERE id = #{id,jdbcType=INTEGER}
+  </select>
+
+  <insert id="insert" parameterType="UserAlias" useGeneratedKeys="false">
+    INSERT INTO user
+    ( id,
+    username,
+    password,
+    administrator
+    )
+    VALUES
+    ( #{id},
+    #{username,jdbcType=VARCHAR},
+    #{password.encrypted:VARCHAR},
+    #{administrator,jdbcType=BOOLEAN}
+    )
+  </insert>
+
+  <update id="update" parameterType="UserAlias">
+    UPDATE user SET
+    username = #{username,jdbcType=VARCHAR},
+    password = #{password.encrypted,jdbcType=VARCHAR},
+    administrator = #{administrator,jdbcType=BOOLEAN}
+    WHERE
+    id = #{id,jdbcType=INTEGER}
+  </update>
+ -->
+<!--   Unique constraint check 
+  <select id="isUniqueUsername" parameterType="map" resultType="boolean">
+    SELECT (count(*) = 0)
+    FROM user
+    WHERE ((#{userId,jdbcType=BIGINT} IS NOT NULL AND id != #{userId,jdbcType=BIGINT}) OR #{userId,jdbcType=BIGINT} IS
+
+    NULL)  --><!-- other than me --><!--
+    AND (username = #{username,jdbcType=VARCHAR})
+  </select>
+-->
+</mapper>
diff --git a/2#Java入门项目/lyons.eaby.new/WebRoot/WEB-INF/classes/resources/sql/Order.xml b/2#Java入门项目/lyons.eaby.new/WebRoot/WEB-INF/classes/resources/sql/Order.xml
@@ -0,0 +1,105 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper
+    PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+    "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+
+<mapper namespace="lyons.dao.OrderDao">
+
+	  <resultMap type="lyons.order.entity.Order" id="OrderResult">  
+	    <id column="id" jdbcType="INTEGER" property="id"/>
+	    <result column="username" jdbcType="VARCHAR" property="userName"/>
+	    <result column="orderDate" jdbcType="DATE" property="orderDate"/>
+	    <result column="commodity_name" jdbcType="VARCHAR" property="commodity_name"/>
+	    <result column="commodity_price" jdbcType="DOUBLE" property="commodity_price"/>
+	    <result column="sum" jdbcType="INTEGER" property="sum"/>
+	  </resultMap>
+
+	 <sql id="columnsSelect">SELECT id,username,orderDate,orderDate,commodity_name,commodity_price,sum FROM orderform</sql>
+
+<!-- 查询订单系 --> 
+
+		<!-- 搞个小分页 -->
+		<select id="queryOrderAllList" parameterType="lyons.order.entity.Order" resultMap="OrderResult">
+		        <include refid="columnsSelect"></include>
+		        <!-- select * from 
+				(
+				   select commodity.*,rownum num
+				   from commodity
+				   where rownum &lt;= #{_parameter}
+				)
+				where num &gt;= #{_paramete}
+				-->
+		</select>
+
+	  <!-- 自己配置该resultMap的原因是 id="OrderResult" 无对应的返回类型   没配置成功的原因可能是 resultMap代替parameterMap
+	  <resultMap type="java.util.Map" id="queryOrderSum">
+	    <result column="commodity_name" jdbcType="VARCHAR" property="commodity_name"/>
+	    <result column="SUM(sum)" jdbcType="VARCHAR" property="SUM(sum)"/>
+	  </resultMap>
+	  -->
+		<select id="queryOrderListByuserName" parameterType="String" resultMap="OrderResult">
+		        <include refid="columnsSelect"/>
+		  <where> 
+	           <!-- 传来String类型以及基本数据类型时的参数获取方式： #{_parameter} -->
+	        <if test="_parameter != null and !(&quot;&quot;.equals(_parameter.trim()))">
+                username = #{_parameter}                    
+            </if>
+          </where>  
+            <!--  
+			    GROUP BY ${commodity_name}  查询出来的相同数据没有相加
+			    HAVING SUM(sum)>0
+			-->
+		</select>
+
+
+	  <!-- parameterType:自定义的对象类型（注意文件夹间用点间隔） test=: 与实体类中的变量名对应-->
+	  <!-- <where>  自动拼接where 1=1、and 等等 -->
+		<select id="queryOrderByKeyName" parameterType="lyons.order.entity.Order" resultMap="OrderResult">
+	         <include refid="columnsSelect"/>
+	     <where>  
+		    <if test="keyWord != null and !(&quot;&quot;.equals(keyWord.trim()))"><!-- 注意and代表&& 双引号的表示  -->
+			    commodity_name LIKE '%'|| #{keyWord} ||'%'                      
+		    </if>
+		    <if test="userName != null and !(&quot;&quot;.equals(userName.trim()))"> 
+			    username = #{userName}       <!-- #{变量名} 取值 -->
+		    </if>
+		  </where>
+		</select>
+
+
+<!-- 删除订单系 --> 
+		<delete id="deleteOrderOneById" parameterType="int" >
+
+		        DELETE FROM orderform WHERE id = #{_parameter} 
+
+		</delete>
+
+		<delete id="deleteOrderBatch" parameterType="java.util.List">
+
+		  DELETE FROM orderform WHERE id 
+		  IN(
+		      <!-- collection:指向集合 item:迭代出来的项 separator:自定义分割符-->
+		      <foreach collection="list" index="" item="item" separator=",">     
+		          #{item}
+		      </foreach>
+		    )
+
+		</delete>
+
+
+
+<!-- 插入订单系 -->
+    <!-- 批量插入数据 sql不熟悉的可以参考博客：http://www.voidcn.com/blog/mingtianhaiyouwo/article/p-5959712.html -->
+	<insert id="insertOrderBatch" parameterType="java.util.List"> <!-- 传来的是 List<order> ,所以是集合collection -->
+
+	            INSERT INTO orderForm(username,commodity_name,commodity_price,sum)
+		    <foreach collection="collection" item="item" separator="UNION ALL"> <!-- 注意集合：collection="collection" -->
+                (
+	                SELECT 
+	                    '${item.userName}','${item.commodity_name}',${item.commodity_price},${item.sum} 
+	                from dual
+                )
+		    </foreach>
+	</insert>
+
+</mapper>