Primefaces芯片Web组件

Question

我有一个CRUD,我想更改inputTexArea:

<p:inputTextarea id="tags" value="#{myController.selected.tags}" />

到新的Primefaces 芯片组件:

<p:chips id="tags" value="#{myController.selected.tags}" />

实体类摘录:

@Lob
@Size(max = 2147483647)
@Column(name = "tags")
private String tags;
//GETTER AND SETTER OMITTED

该GET方法工作得很好,因为预期的标签显示领域:

public List<String> getTags() {
return Arrays.asList(tags.split(","));
}

但是set方法不是,因为当我点击Save时,会发生异常:

public void setTags(List<String> tags) {
this.tags = String.join(",", tags);
}

java.lang.ClassCastException: java.util.ArrayList cannot be cast to java.lang.CharSequence
at org.hibernate.validator.internal.constraintvalidators.SizeValidatorForCharSequence.isValid(SizeValidatorForCharSequence.java:33)
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateSingleConstraint(ConstraintTree.java:281)

有谁可以帮助我吗 ？

提前致谢.

ps.:我已经向Primefaces团队询问了这个问题(https://forum.primefaces.org/viewtopic.php?f=3&t=51091),Primefaces的核心开发人员(Thomas Andraschko)指导我去问Hibernate验证团队.

Answer 1

看起来 Hibernate 验证器与返回字段的 getter 混淆List<String>了String。尝试这个：

public String getTags() {
    return tags;
}

public void setTags(String tags) {
    this.tags = tags;
}

public List<String> getTagsList() {
    return Arrays.asList(tags.split(","));
}

public void setTagsList(List<String> tags) {
    this.tags = String.join(",", tags);
}

进而：

<p:chips id="tags" value="#{myController.selected.tagsList}" />