Struts 2分页，查询语法错误

Question

我从数据库获取数据时出错。看起来一切都很好，但我收到此错误？为什么？

完全错误

(org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected token: 0 near line 1, column 47 [from com.project.Data limit 0,10] (Encoded))

DataAction.java

/**
             * To list Data
             *
             * @return String
             */
            public String listThrowException() {

                try{

                    //Getting Total records count from database...
                    pagination.setPreperties(facade.getDataCount());


                    //Getting data list from database
                    listData = facade.listData(pagination);

                    //Setting number of records in the particular page
                    pagination.setPage_records(listData.size());

                    logger.info(Logger.EVENT_SUCCESS,
                            "successfully viewed data list!");


                }catch (Exception e) {
                    logger.error(
                            Logger.EVENT_FAILURE,
                            "could not view data list, error: *"
                                    + e.getMessage() + "*");

                }

                return "success";
            }

DataService.java

     @Override
        public List<Data> listData(Pagination pagination){

            List<Data> list=new ArrayList<Data>();
            Query query;

            try {
                String excQuery = "from Data limit ";
                excQuery = pagination.getSQLQuery(excQuery);
                query = em.createQuery(excQuery);
                list = query.getResultList();
            } catch (Exception e) {
                logger.error(Logger.EVENT_FAILURE, e.getMessage());
                return null;
            }
            return list;



}

Pagination.java

public class Pagination {

    private long page_size = 0; 
    private int page_number = 0;
    private long total_records = 0;
    private int page_records = 0;
    private long start = 0;
    private long end = 0;
    private int total_pages = 0;


    public void setPreperties(long l){
        total_records = l;
        total_pages = (int) Math.ceil(((double)l / (double)page_size));
        start = ((page_size * page_number) - page_size);
        end = page_size*page_number;
        if(page_size==0){
            start = 0;
            end = l;
            total_pages = 1;
        }
    }

    public Pagination(int page_size, int page_number) {
        this.page_number = page_number;
        this.page_size = page_size;
    }

    public String getSQLQuery(String query) {
        query += getStart() + "," + getEnd();
        return query;
    }
///get and set methods
}

我的问题是＆＃34;限制＆＃34;在Hql中它不受支持。我使用setFirstResults（）setMaxResults（）并且它工作。我的问题是在你的页面中实现paginaton的一个很好的例子。我参考本教程 http://prathap-puppala.blogspot.com/2011/06/struts-2-pagination-example.html我只更改DateService.java ** 祝你好运！

DateService.java

   @Override
        public List<Data> listData(Pagination pagination){

            List<Data> list=new ArrayList<Data>();
            Query query;

            try {
                String excQuery = "from Data ";
query = em.createQuery(excQuery).
    setFirstResult(pagination.getStart()).setMaxResults(pagination.getEnd());
                query = em.createQuery(excQuery);
                list = query.getResultList();
            } catch (Exception e) {
                logger.error(Logger.EVENT_FAILURE, e.getMessage());
                return null;
            }
            return list;



}