java.lang.NumberFormatException: For input string: "id"该如何解决

@Entity@Table(name = "t_organization")public class Organization {    private int id;    private String name;    private String sn;//    private String description;    private Organization parent;    private Set<Organization> children = new HashSet<Organization>();    @Id    @GeneratedValue    public int getId() {        return id;    }    public void setId(int id) {        this.id = id;    }    @ManyToOne()    @JoinColumn(name = "pid")    public Organization getParent() {        return parent;    }    public void setParent(Organization parent) {        this.parent = parent;    }    @OneToMany(cascade=CascadeType.ALL,mappedBy = "parent")    public Set<Organization> getChildren() {        return children;    }    public void setChildren(Set<Organization> children) {        this.children = children;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public String getSn() {        return sn;    }    public void setSn(String sn) {        this.sn = sn;    }    public String getDescription() {        return description;    }    public void setDescription(String description) {        this.description = description;    }}

            <s:iterator value="orgs">              <tr bgcolor="#EFF3F7" class="TableBody1" onmouseover="this.bgColor = '#DEE7FF';" onmouseout="this.bgColor='#EFF3F7';">                  <td align="center" vAlign="middle"><s:property value="id"/></td>                  <td align="center" vAlign="middle"><s:property value="name"/></td>                  <td align="center" vAlign="middle"><s:property value="sn"/></td>                  <td align="center" vAlign="middle"><s:property value="parent.name"/></td>                   <td align="center" vAlign="middle"><a href="#" onclick="">删除</a></td>              </tr>            </s:iterator>