没有接收到数据

我打印出获取到的root为空

这个是CatalogServlet的list方法

/**
 * 查询所有分类
 * url="/admin/Catalog/list.do"
 *
 * @param request
 * @param response
 * @throws ServletException
 * @throws IOException
 */
public void list(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    //调用业务
    Catalog root = catalogService.getRoot();

    Integer id = root.getId();
    Integer pid = root.getPid();
    String info = root.getInfo();
    root.getChildren();
    System.out.println(id + "----" + pid + "---" + info);
    //页面跳转
    request.setAttribute("root", root);
    request.getRequestDispatcher("/WEB-INF/pages/admin/catalog_list.jsp").forward(request, response);
}

CatalogService

//获取分类
Catalog getRoot();

CatalogServiceImpl

public Catalog getRoot() {
    return catalogDao.select(10000);
}

CatalogDao

/**
 * 插入数据和批量插入数据
 * 直接嵌入脚本
 * @param list
 */
@Insert("<script>" +
        "insert into catalog (title,pid,info) vales" +
        "<foreach collection='list' item='catalog' separator=',' >" +
        "(#{catalog.title},#{catalog.pid},#{catalog.info})" +
        "</foreach>" +
        "</script>")
@Options(useGeneratedKeys = true, keyProperty = "id")
void beachInsert(List<Catalog> list);

mybatis-config.xml

<?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>

    <properties resource="db.properties"></properties>

    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <property name="driver" value="${driver}"/>
                <property name="url" value="${url}"/>
                <property name="username" value="${username}"/>
                <property name="password" value="${password}"/>
            </dataSource>
        </environment>
    </environments>

    <mappers>
        <package name="com.coke.cake.dao"/>
    </mappers>
</configuration>