hibernate 自動對映物件有時候在用到多個表進行查詢的時候根本搞不定
如果是查出來的結果進行篩選那麼需要分頁功能就完蛋了，所以需要用普通的聯合查詢sql，
下面上程式碼：

DTO物件：

package com.sc.tradmaster.service.project.impl.dto;

//門店業務DTO類
public class ShopBusinessDTO {

    //門店客戶名稱
    private String shopCustomerName;
    //專案名稱
    private String projectName;
    //專案id
    private
 
 String projectId;
    //備案狀態 0 備案 1 已到訪  2 成交
    private Integer applyStatus;
    //備案時間
    private String applyTime;
    //案場客戶id
    private String projectCustomerId;

    public String getShopCustomerName() {
        return shopCustomerName;
    }
    public void setShopCustomerName(String shopCustomerName) {
        this
 
.shopCustomerName = shopCustomerName;
    }
    public String getProjectName() {
        return projectName;
    }
    public void setProjectName(String projectName) {
        this.projectName = projectName;
    }
    public String getProjectId() {
        return projectId;
    }
    public void setProjectId
 
(String projectId) {
        this.projectId = projectId;
    }
    public Integer getApplyStatus() {
        return applyStatus;
    }
    public void setApplyStatus(Integer applyStatus) {
        this.applyStatus = applyStatus;
    }
    public String getApplyTime() {
        return applyTime;
    }
    public void setApplyTime(String applyTime) {
        this.applyTime = applyTime;
    }
    public String getProjectCustomerId() {
        return projectCustomerId;
    }
    public void setProjectCustomerId(String projectCustomerId) {
        this.projectCustomerId = projectCustomerId;
    }
    @Override
    public String toString() {
        return "ShopBusinessDTO [shopCustomerName=" + shopCustomerName + ", projectName=" + projectName + ", projectId="
                + projectId + ", applyStatus=" + applyStatus + ", applyTime=" + applyTime + ", projectCustomerId="
                + projectCustomerId + "]";
    }




}

//將查詢出來的結果封裝成DTO物件
Dao層：

/**
* @param sql  需要查詢的sql語句
* @param clazz DTO物件
* @param colums DTO物件的屬性名
* @param types DTO物件的type型別
*
*/
public List queryDTOBySql(String sql,Class clazz,String[] colums,String[] types) {    
        Session session = super.getSessionFactory().getCurrentSession();
        SQLQuery query = session.createSQLQuery(sql);
        if(colums!=null && types!=null && colums.length==types.length){
            for(int i=0;i<colums.length;i++){
                if(types[i].equals("Integer")){
                    query.addScalar(colums[i],StandardBasicTypes.INTEGER);
                }else if(types[i].equals("String")){
                    query.addScalar(colums[i],StandardBasicTypes.STRING);
                }else if(types[i].equals("Double")){
                    query.addScalar(colums[i],StandardBasicTypes.DOUBLE);
                }

            }
        }
        List<Object[]> list = query.setResultTransformer(Transformers.aliasToBean(clazz)).list();
        return list;
    }

Service層：

String hql = "SELECT sc.shopCustomerName as shopCustomerName,p.projectName as projectName, "
                + " p.projectId as projectId,g.applyStatus as applyStatus,g.applyTime as applyTime, g.projectCustomerId as projectCustomerId ";
        hql += " from ";
        hql += " t_shopCustomers as sc,t_projects as p,t_guideRecords as g";
        hql += " where ";
        hql += " sc.shopCustomerId = g.shopCustomerId and (g.applyStatus = 0 or g.applyStatus = 1) and p.projectId = g.projectId ";
        hql += "and sc.shopId =" + user.getParentId();
        //hql += " and sc.shopId = 1 ";

        //模糊搜尋某一個客戶名稱
        if(cusOrProName != null && !"".equals(cusOrProName)){
            hql += " and sc.shopCustomerName like '%" + cusOrProName + "%' ";
        }
        //進行時間的篩選
        if(startTime != null && !"".equals(startTime)){
            hql += " and g.applyTime >= '" + startTime + "' ";
        }
        if(endTime != null && !"".equals(endTime)){
            hql += " and g.applyTime <= '" + endTime + "' ";
        }

        //進行備案狀態的查詢
        if(status != null && !"".equals(status)){
            hql += " and g.applyStatus = " + status;
        }
//分頁
hql += " limit " + page.getStart() + "," + page.getLimit();
String[] colums ={"shopCustomerName","projectName","projectId","applyStatus","applyTime","projectCustomerId"};
String[] types = {"String","String","String","Integer","String","String"};

List<ShopBusinessDTO> list = baseDao.queryDTOBySql(hql, ShopBusinessDTO.class, colums, types);

這樣的查詢使得hibernate可以更加靈活（為了一些特定的功能）