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我有从表单绑定我的数据的麻烦问题： 我有两个类与WebDataBinder和Set.Class
@Entity
@Table(name = "ROLES")
public class Role implements GenericDomain {
private Long id;
private String code;
private String name;
private Set<Privilege> privileges = new HashSet<Privilege>(0);
public Role() {}
/* getter and setter*/
@ManyToMany(cascade=CascadeType.ALL)
@JoinTable(name = "ROLES_PRIVILEGES"
, joinColumns = { @JoinColumn(name = "ROLE_ID") }
, inverseJoinColumns = { @JoinColumn(name = "PRIVILEGE_ID") }
)
public Set<Privilege> getPrivileges() {
return this.privileges;
}
public void setPrivileges(Set<Privilege> privileges) {
this.privileges = privileges;
}
/* overide of hascode, equals*/
}
而且
@Entity
@Table(name = "PRIVILEGES")
public class Privilege implements GenericDomain {
private Long id;
private String code;
private Set<Role> roles = new HashSet<Role>(0);
public Privilege() {}
/* getter and setter*/
@ManyToMany(cascade=CascadeType.REFRESH, mappedBy="privileges")
public Set<Role> getRoles() {
return this.roles;
}
public void setRoles(Set<Role> roles) {
this.roles = roles;
}
@Override
public String toString(){
return this.getCode() + this.getComment();
}
/*overide equals and hascode*/
，并在我的控制，我有：
@InitBinder
public void initBinder(WebDataBinder binder) {
binder.registerCustomEditor(Set.class, "privileges", new CustomCollectionEditor(Set.class) {
@Override
protected Object convertElement(Object element) {
return (element == null)?null:privilegeService.getOne(Integer.parseInt((String)element));
}
});
}
@RequestMapping(value = "edit", method = RequestMethod.POST)
public String saveOldRole( @ModelAttribute("role") Role role
, BindingResult result
, ModelMap model
) {
validator.validate(role, result);
if (result.hasErrors()){
logger.error(result.getAllErrors());
model.addAllAttributes(result.getModel());
return "/admin/role/edit";
}
logger.info(role.getPrivileges());
Iterator p = role.getPrivileges().iterator();
while(p.hasNext()){
logger.info(p.next().getClass());
}
roleService.saveOrUpdate(role);
model.addAttribute("roles", roleService.getAll());
sessionStatus.setComplete();
return "redirect:/admin/role/list.do";
}
和我的调试是
role.RoleController:93 - [[MANAGE_USERS], [MANAGE_ROLES]]
role.RoleController:96 - class java.util.LinkedHashSet
role.RoleController:96 - class java.util.LinkedHashSet
22:29:44,915 ERROR tomcat-http--7 property.BasicPropertyAccessor:194 - IllegalArgumentException in class: com.stunaz.domain.Privilege, getter method of property: id
我不明白为什么在96，班级类型是java.util.LinkedHashSet，我认为它应该是特权。 我不明白为什么我的role.getPrivileges()是一套集合，它应该是一套特权。
当然在saveOrUpdate上午出现错误。