我想创建具有可以表达的属性“标题”的自定义组件,但我收到此错误:
无法将字符串“#{myBean.text}”转换为属性“title”的类“javax.el.ValueExpression”:属性编辑器未向 PropertyEditorManager 注册
原因:org.apache.jasper.JasperException - 无法将字符串“#{myBean.text}”转换为属性“title”的类“javax.el.ValueExpression”:属性编辑器未向 PropertyEditorManager 注册
我的课程:
<d:ticker title="#{myBean.text}">
<f:verbatim>Hello JSF Custom Component</f:verbatim>
</d:ticker>
MyBean.java
public class MyBean {
private String text = "TITLE!!!!";
public String getText() {
return text;
}
}
TickerTag.java
private ValueExpression title = null;
public void setTitle(ValueExpression title)
{
this.title = title;
}
protected void setProperties(UIComponent component) {
super.setProperties(component);
if (title != null) {
if (!title.isLiteralText()) {
component.setValueExpression("title", title);
} else {
component.getAttributes().put("title",title.getExpressionString());
}
}
taglib.tld
<taglib version="2.1" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee web-jsptaglibrary_2_1.xsd">
<tlib-version>1.0</tlib-version>
<jsp-version>1.2</jsp-version>
<short-name>d</short-name>
<uri>http://jsftutorials.com/</uri>
<tag>
<name>ticker</name>
<tag-class>ticker.TickerTag</tag-class>
<body-content>JSP</body-content>
<attribute>
<name>title</name>
<rtexprvalue>true</rtexprvalue>
</attribute>
</tag>
</taglib>
有人看到问题了吗?