提交表单时出现此错误,但无法弄清楚为什么会发生这种情况。我相信 taglib 应该处理这个问题。我尝试将在我的 jsp 中传递的值更改为,itemValue="id"
但它没有任何影响。
org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 1 errors
Field error in object 'content' on field 'stateCollection': rejected value [com.myapp.cmt.model.State[ id=3 ]]; codes [typeMismatch.content.stateCollection,typeMismatch.stateCollection,typeMismatch.java.util.Collection,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [content.stateCollection,stateCollection]; arguments []; default message [stateCollection]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'java.util.Collection' for property 'stateCollection'; nested exception is java.lang.IllegalStateException:
Cannot convert value of type [java.lang.String] to required type [com.myapp.cmt.model.State] for property 'stateCollection[0]': no matching editors or conversion strategy found]
我的jsp
<strong>State</strong><br/>
<form:checkboxes path="stateCollection" items="${states}" itemLabel="name"/>
我的内容
public class Content implements Serializable {
.......
@JoinTable(name = "content_to_state", joinColumns = {
@JoinColumn(name = "content_id", referencedColumnName = "id")}, inverseJoinColumns = {
@JoinColumn(name = "state_id", referencedColumnName = "id")})
@ManyToMany
private Collection<State> stateCollection;
.....
@XmlTransient
public Collection<State> getStateCollection() {
return stateCollection;
}
public void setStateCollection(Collection<State> stateCollection) {
this.stateCollection = stateCollection;
}
.....
我的控制器
...
@RequestMapping(value = "/{guid}/save", method = RequestMethod.POST)
public ModelAndView saveContent(@ModelAttribute("content") Content content, @PathVariable("guid") String guid) {
try {
// Save the modified object
contentService.save(content);
} catch (IllegalOrphanException ex) {
...
我的内容服务
...
@Transactional
public void save(Content content) throws IllegalOrphanException, NonexistentEntityException, RollbackFailureException, Exception {
try {
utx.begin();
em.merge(content);
utx.commit();
} catch (Exception ex) {
} finally {
if (em != null) {
em.close();
}
}
}
...