关于spring-ldap 分页的问题

__陀飞轮 2012-02-10 03:56:25

我使用spring-ldap实现分页功能，抛出如下错误：
org.springframework.ldap.CommunicationException: [LDAP: error code 2 - paged results cookie is invalid]; nested exception is javax.naming.CommunicationException: [LDAP: error code 2 - paged results cookie is invalid]; remaining name ''
自己排查的结果是cookie没有在再次查询时放入，导致以上问题，但实在是不知道怎么搞了，还请哪位达人帮帮忙，感激不尽~~~ 代码如下：



//curPage:要查询的页数,pageSize：每页数据量

	@Override

	public List getUserInfo(int curPage, int pageSize) throws Exception  

    {  

        // 用于存储条目列表  

        List list = new ArrayList();  

        AttributesMapper attributesMapper = new AttributesMapper() {

			@Override

			public Object mapFromAttributes(Attributes attributes)

					throws NamingException {

				return attributes;

			}

		};

        // 设置filter  

        String filter = "objectclass=person";

        // 声明搜索控件  

        SearchControls searchControls = new SearchControls();  

        // 指定检索范围  

        searchControls.setSearchScope(SearchControls.ONELEVEL_SCOPE);  

        /* 

         * 0:OBJECT_SCOPE,搜索指定的命名对象。  

         * 1:ONELEVEL_SCOPE,只搜索指定命名对象的一个级别，这是缺省值。 

         * 2:SUBTREE_SCOPE,搜索以指定命名对象为根结点的整棵树  **/

        // 声明属性名集合，并由Map类型转换为String类型数组  

        // 设置要返回的属性，即所有  

        String[] s = {"uid","initials","userPassword","employeeNumber","displayName","businessCategory","departmentNumber","homePhone"," homePostalAddress","mail","telexNumber","telephoneNumber","postalCode","title","givenName","destinationIndicator","roomNumber","description","sn","cn"};

        searchControls.setReturningAttributes(s);  

        // 设置handler，handler里存储了条目的list  

        CollectingNameClassPairCallbackHandler handler  = (CollectingNameClassPairCallbackHandler) new AttributesMapperCallbackHandler( attributesMapper);  

        // 设置页面大小  

        //PagedResultsControl pagedResultsControl = new PagedResultsControl(1, true);

        PagedResultsResponseControl p = new PagedResultsResponseControl(PagedResultsResponseControl.OID,true,null);

		PagedResultsCookie pagedResultsCookie = new PagedResultsCookie(p.getCookie());

        PagedResultsRequestControl requestControl=new PagedResultsRequestControl(pageSize,pagedResultsCookie); 

        //PagedResultsRequestControl requestControl  = new PagedResultsRequestControl(pageSize);  

        // 分为两种情况，第一种只取第一页，第二种取其他页数  

        if (curPage == 1) {  

            try   {  

                // 只获取第一页  

                this.getLdapTemplate().search("", filter, searchControls, handler,requestControl);  

                list = handler.getList();  

            } catch (Exception e){  

                System.out.println("分页查询异常1" + e);  

            }  

        }else{  

            try  

            {  

                // 按分页搜索，并将结果存进handler，这里获取第一页  

            	this.getLdapTemplate().search("", filter, searchControls, handler,requestControl);  

                // 循环获取其余的页数，直至目标页  

                for (int i = 0, cur_1 = curPage - 1, cur_2 = curPage - 2; i < cur_1; i++)  

                {  

                    // 声明临时变量handlerTemp。用于每次存储该次搜索的页面信息  

                    CollectingNameClassPairCallbackHandler handlerTemp = new AttributesMapperCallbackHandler(attributesMapper);  

                    // 设置页面大小  

//            		PagedResultsCookie pagedResultsCookie1 = new PagedResultsCookie(p.getCookie());

                    requestControl = new PagedResultsRequestControl(pageSize,requestControl.getCookie()); 

                    // 在上次查询的基础上继续往后查询  

                    this.getLdapTemplate().search("", filter, searchControls,handlerTemp, requestControl);  

                    // 检测为当前页，获取当前页的条目列表  

                    if (i == cur_2){

                        list = handlerTemp.getList();

                    }

                }  

            }catch (Exception e){  

                System.out.println("分页查询异常2" + e);  

            }  

        }  

        return list;  

    }