显示所有分类

主页中插入一个jsp:
<table class="table" align="center">
    <tr class="trTop">
        <td colspan="2" class="tdTop">
            <iframe frameborder="0" src="<c:url value='/jsps/search.jsp'/>" name="search"></iframe>
        </td>
    </tr>
</table>


分类模块:

1.发起请求位置:main.jsp中发起请求
创建所有相关类:
cn.itcast.goods.category.
domain.Category
dao.CategoryDao
service.CategoryService
web.servlet.CategoryServlet

//Category->
public class Category{
    private String cid;
    private String cname;
    private Category parent;
    private String desc;//分类描述
    private List<Category> children;
    
    private Category toCategory(Map<String,Object> map{
        Category category = CommonUtils.toBean(map,Category.class);
        String pid = (String)map.get("pid");
        if(pid!= null){
            Category parent = new Category();
            parent.setCid(pid);
            
        }
    }
    
}
//CategoryDao->
public class CategoryDao{
    private QueryRunner qr = new TxQueryRunner();
    public List<Category>findAll(){
        //查询所有一级分类
        
    }
    
}