<c:forEach items="${lsddList }" var="ddlist">
${ddlist.cp.dj }
${ddlist.cpsl }
</c:forEach>
这两个是jsp页面用el表达式取值，第二个可以取到值，第一个却不行，且控制台没有报错，这会是什么原因？
lsddList是存放在session里面的 Lsdd类的list集合
这是Lsdd类里面的一对一映射：
@Column
private String cpid;
@One(field="cpid",target=Cp.class)
private Cp cp;
//购物车页面
@RequestMapping("/toCart.do")
public String toCart(HttpSession session){
Student student = (Student)session.getAttribute("user");
if(student!=null){
List<Lsdd>lsddList = lsddService.queryAll(student);
session.setAttribute("lsddList", lsddList);
}else
return "redirect:../login.jsp";
return "cart";
}
这个就是把它全部查出来存入session
@Table("tab_cp")
public class Cp implements Serializable{
@Name
@Prev(els=@EL("$me.genID"))
private String cpid;
@Column
private String cpmc;
@Column
private Integer cs;
@Column
private Double dj;
@Column
private Integer cpdj;
@Column
private String img;
}
@Table("tab_lsdd")
public class Lsdd {
@Name
@Prev(els=@EL("$me.genID"))
private String tempid;
@Column
@Prev(els=@EL("$me.genID"))
private String tempnum;
@Column
private String cpid;
@One(field="cpid",target=Cp.class)
private Cp cp;
@Column
private Integer cpsl;
}