修改 生成器controller模板缺导包 与 index页面兼容性

Merge pull request !2 from dragonwzj/master

ruoyi-generator/src/main/resources/vm/java/controller.java.vm

@@ -1,6 +1,7 @@
 package ${packageName}.controller;
 
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.core.toolkit.Wrappers;
 
 import java.util.List;
 import java.util.Arrays;

ruoyi-generator/src/main/resources/vm/vue/index.vue.vm

@@ -323,7 +323,7 @@ export default {
         pageSize: 10,
 #foreach ($column in $columns)
 #if($column.query)
-        $column.javaField: null#if($velocityCount != $columns.size()),#end
+        $column.javaField: undefined#if($velocityCount != $columns.size()),#end
 
 #end
 #end
@@ -399,7 +399,7 @@ export default {
         $column.javaField: []#if($velocityCount != $columns.size()),#end
 
 #else
-        $column.javaField: null#if($velocityCount != $columns.size()),#end
+        $column.javaField: undefined#if($velocityCount != $columns.size()),#end
 
 #end
 #end