优化mybatis模块的dao和xml模板，修改dao接口注解为@Repository，所有dao参数改为包装类，删除update语句最后的UpdateTime = NOW()，修改dao接口文件的方法注释使其更符合javaDoc的标准，修改insert语句增加插入行主键的返回，修改load的方法名为selectByPrimaryKey，修改xml的update语句新增动态if判空，修改xml的insert语句新增动态插入判空，更符合mybatisGenerator标准（感谢@Archer-Wen的贡献 ）

generator-web/src/main/resources/templates/code-generator/mybatis/dao.ftl

@@ -7,39 +7,43 @@ import java.util.List;
 * ${classInfo.classComment}
 * @author ${authorName} ${.now?string('yyyy-MM-dd')}
 */
-@Component
+@Repository
 public interface ${classInfo.className}Dao {
 
     /**
     * 新增
+    * @param ${classInfo.className}Entity
     */
-    public int insert(@Param("${classInfo.className?uncap_first}") ${classInfo.className} ${classInfo.className?uncap_first});
+    public Integer insert(@Param("${classInfo.className?uncap_first}") ${classInfo.className}Entity ${classInfo.className?uncap_first});
 
     /**
     * 删除
+    * @param id
     */
-    public int delete(@Param("id") int id);
+    public Integer delete(@Param("id") Integer id);
 
     /**
     * 更新
+    * @param ${classInfo.className}Entity
     */
-    public int update(@Param("${classInfo.className?uncap_first}") ${classInfo.className} ${classInfo.className?uncap_first});
+    public Integer update(@Param("${classInfo.className?uncap_first}") ${classInfo.className}Entity ${classInfo.className?uncap_first});
 
     /**
-    * Load查询
+    * 根据主键查询一个实体
+    * @param id
     */
-    public ${classInfo.className} load(@Param("id") int id);
+    public ${classInfo.className}Entity selectByPrimaryKey(@Param("id") Integer id);
 
     /**
     * 分页查询Data
+    * @param offset
+    * @param pageSize
     */
-	public List<${classInfo.className}> pageList(@Param("offset") int offset,
-                                                 @Param("pagesize") int pagesize);
+    public List<${classInfo.className}Entity> pageList(@Param("offset") Integer offset, @Param("pageSize") Integer pageSize);
 
     /**
     * 分页查询Count
     */
-    public int pageListCount(@Param("offset") int offset,
-                             @Param("pagesize") int pagesize);
+    public Integer pageListCount();
 
-}
+}

generator-web/src/main/resources/templates/code-generator/mybatis/mybatis.ftl

@@ -3,80 +3,87 @@
         "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 <mapper namespace="${packageName}.dao.${classInfo.className}Dao">
 
-    <resultMap id="${classInfo.className}" type="${packageName}.entity.${classInfo.className}" >
-    <#if classInfo.fieldList?exists && classInfo.fieldList?size gt 0>
-    <#list classInfo.fieldList as fieldItem >
-        <result column="${fieldItem.columnName}" property="${fieldItem.fieldName}" />
-    </#list>
-    </#if>
+    <resultMap id="BaseResultMap" type="${packageName}.entity.${classInfo.className}Entity" >
+        <#if classInfo.fieldList?exists && classInfo.fieldList?size gt 0>
+            <#list classInfo.fieldList as fieldItem >
+                <result column="${fieldItem.columnName}" property="${fieldItem.fieldName}" />
+            </#list>
+        </#if>
     </resultMap>
 
     <sql id="Base_Column_List">
-    <#if classInfo.fieldList?exists && classInfo.fieldList?size gt 0>
-    <#list classInfo.fieldList as fieldItem >
-        `${fieldItem.columnName}`<#if fieldItem_has_next>,</#if>
-    </#list>
-    </#if>
+        <#if classInfo.fieldList?exists && classInfo.fieldList?size gt 0>
+            <#list classInfo.fieldList as fieldItem >
+                `${fieldItem.columnName}`<#if fieldItem_has_next>,</#if>
+            </#list>
+        </#if>
     </sql>
 
-    <insert id="insert" parameterType="java.util.Map" >
-        INSERT INTO ${classInfo.tableName} (
-        <#if classInfo.fieldList?exists && classInfo.fieldList?size gt 0>
-        <#list classInfo.fieldList as fieldItem >
-            <#if fieldItem.columnName != "Id" >
-            `${fieldItem.columnName}`<#if fieldItem_has_next>,</#if>
+    <insert id="insert" useGeneratedKeys="true" keyColumn="id" parameterType="${packageName}.entity.${classInfo.className}Entity">
+        INSERT INTO ${classInfo.tableName}
+        <trim prefix="(" suffix=")" suffixOverrides=",">
+            <#if classInfo.fieldList?exists && classInfo.fieldList?size gt 0>
+                <#list classInfo.fieldList as fieldItem >
+                    <#if fieldItem.columnName != "id_" >
+                        ${r"<if test ='null != "}${fieldItem.fieldName}${r"'>"}
+                        `${fieldItem.columnName}`<#if fieldItem_has_next>,</#if>
+                        ${r"</if>"}
+                    </#if>
+                </#list>
             </#if>
-        </#list>
-        </#if>
-        )
-        VALUES(
-        <#if classInfo.fieldList?exists && classInfo.fieldList?size gt 0>
-        <#list classInfo.fieldList as fieldItem >
-        <#if fieldItem.columnName != "Id" >
-            <#if fieldItem.columnName="addtime" || fieldItem.columnName="updatetime" >
-            NOW()<#if fieldItem_has_next>,</#if>
-            <#else>
-            ${r"#{"}${classInfo.className?uncap_first}.${fieldItem.fieldName}${r"}"}<#if fieldItem_has_next>,</#if>
+        </trim>
+        <trim prefix="values (" suffix=")" suffixOverrides=",">
+            <#if classInfo.fieldList?exists && classInfo.fieldList?size gt 0>
+                <#list classInfo.fieldList as fieldItem >
+                    <#if fieldItem.columnName != "id_" >
+                    <#--<#if fieldItem.columnName="addtime" || fieldItem.columnName="updatetime" >
+                    ${r"<if test ='null != "}${fieldItem.fieldName}${r"'>"}
+                        NOW()<#if fieldItem_has_next>,</#if>
+                    ${r"</if>"}
+                    <#else>-->
+                        ${r"<if test ='null != "}${fieldItem.fieldName}${r"'>"}
+                        ${r"#{"}${fieldItem.fieldName}${r"}"}<#if fieldItem_has_next>,</#if>
+                        ${r"</if>"}
+                    <#--</#if>-->
+                    </#if>
+                </#list>
             </#if>
-        </#if>
-        </#list>
-        </#if>
-        )
+        </trim>
     </insert>
 
-    <delete id="delete" parameterType="java.util.Map" >
+    <delete id="delete" >
         DELETE FROM ${classInfo.tableName}
-        WHERE `id` = ${r"#{id}"}
+        WHERE `id_` = ${r"#{id}"}
     </delete>
 
-    <update id="update" parameterType="java.util.Map" >
+    <update id="update" parameterType="${packageName}.entity.${classInfo.className}Entity">
         UPDATE ${classInfo.tableName}
-        SET
-        <#list classInfo.fieldList as fieldItem >
-        <#if fieldItem.columnName != "Id" && fieldItem.columnName != "AddTime" && fieldItem.columnName != "UpdateTime" >
-            ${fieldItem.columnName} = ${r"#{"}${classInfo.className?uncap_first}.${fieldItem.fieldName}${r"}"},
-        </#if>
-        </#list>
-            UpdateTime = NOW()
-        WHERE `id` = ${r"#{"}${classInfo.className?uncap_first}.id${r"}"}
+        <set>
+            <#list classInfo.fieldList as fieldItem >
+                <#if fieldItem.columnName != "id_" && fieldItem.columnName != "AddTime" && fieldItem.columnName != "UpdateTime" >
+                    ${r"<if test ='null != "}${fieldItem.fieldName}${r"'>"}${fieldItem.columnName} = ${r"#{"}${fieldItem.fieldName}${r"}"}<#if fieldItem_has_next>,</#if>${r"</if>"}
+                </#if>
+            </#list>
+        </set>
+        WHERE `id_` = ${r"#{"}id${r"}"}
     </update>
 
 
-    <select id="load" parameterType="java.util.Map" resultMap="${classInfo.className}">
+    <select id="selectByPrimaryKey" resultMap="BaseResultMap">
         SELECT <include refid="Base_Column_List" />
         FROM ${classInfo.tableName}
-        WHERE `id` = ${r"#{id}"}
+        WHERE `id_` = ${r"#{id}"}
     </select>
 
-    <select id="pageList" parameterType="java.util.Map" resultMap="${classInfo.className}">
+    <select id="pageList" resultMap="BaseResultMap">
         SELECT <include refid="Base_Column_List" />
         FROM ${classInfo.tableName}
-        LIMIT ${r"#{offset}"}, ${r"#{pagesize}"}
+        LIMIT ${r"#{offset}"}, ${r"#{pageSize}"}
     </select>
 
-    <select id="pageListCount" parameterType="java.util.Map" resultType="int">
+    <select id="pageListCount" resultType="java.lang.Integer">
         SELECT count(1)
         FROM ${classInfo.tableName}
     </select>
 
-</mapper>
+</mapper>