在Spring和Hibernate中，如何将复合键从控制器传递到JSP？

Question

I have Object class User.java

@Entity
@Table(name = "UserMst")
public class User implements Serializable{
private static final long serialVersionUID = 1L;

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long userId;

@Column(name="emailId")
private String emailId;

@Column(name="userName")
private String userName;

@Column(name="address")
private String address;

@Column(name="mobNo")
private BigDecimal mobNo;

@OneToOne(cascade = CascadeType.ALL)
@JoinColumn(name = "deptId")
private Department department;

@OneToOne(cascade = CascadeType.ALL)
@JoinColumn(name = "desgId")
private Designation designation;

@Column(name="grpId")
private int grpId ;

@ManyToOne(fetch=FetchType.LAZY)
@JoinColumns({
  @JoinColumn(name = "sk"),
  @JoinColumn(name = "pk")})
private Config config ;

@Column(name="upw1")
private String upw1 ;

@Column(name="upw2")
private String upw2 ;

@Column(name="upw3")
private String upw3 ;

@Column(name="createdBy")
private String createdBy ;

@Column(name="creationDate")
private Timestamp creationDate;

@Column(name="loginStatus")
private String loginStatus;

@Column(name="hintId")
private int hintId ;

@Column(name="hintAns")
private String hintAns ;

@Column(name="otp")
private String otp ;

and another Object Config.java has composite key(sk, pk) which is foreign key of User object.

 @Entity
 @Table(name = "config")
 public class Config implements Serializable{

  private static final long serialVersionUID = 1L;

  @Id
  @GeneratedValue(strategy = GenerationType.IDENTITY)   
  private String pk;

  @Id
  @GeneratedValue(strategy = GenerationType.IDENTITY)
  private String sk;

  @Column(name="ds")
  private String ds;

  @Column(name="value")
  private String value;

Now I have list of Config and passed that list on jsp in which dropdown is there and want option value bind to that composite key(sk,pk)

 <select name="userLevel" id="lvl_Id" class="form-control" size="0"> <option value="-1">--Select--</option> <c:forEach var="levelList" items="${levelList}"> <option value="<c:out value="${levelList.sk}|${levelList.pk}" />">${levelList.ds}</option> </c:forEach> </select> 

Anybody can help me out this?

Thanks in Advance.

Answer 1

if you want to pass the composite key to the controller side then you can pass the data in hidden field using html tag.

May be your problem will solve.

Answer 2

${levelList.ds} whatever the data is stored in this list display in the select box. here simple "${levelList.ds}" data is displayed here because there is no ant data.

 <select name="userLevel" id="lvl_Id" class="form-control" size="0"> <option value="-1">--Select--</option> <c:forEach var="levelList" items="${levelList}"> <option value="${levelList.sk}|${levelList.pk}">${levelList.ds}</option> </c:forEach> </select>