听众没有回应我的行动:
<h:form>
<p:fileUpload mode="simple" fileUploadListener="#{ADD.uploadImage}" auto="true"/>
</h:form>
这是支持bean:
@ManagedBean
@ViewScoped
public class TestClass {
public void uploadImage(FileUploadEvent e){
System.out.println("EVENT");
}
}
这是我的web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0"
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 http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<context-param>
<param-name>javax.faces.PROJECT_STAGE</param-name>
<param-value>Development</param-value>
</context-param>
<filter>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<filter-class>org.primefaces.webapp.filter.FileUploadFilter</filter-class>
<init-param>
<param-name>thresholdSize</param-name>
<param-value>51200</param-value>
</init-param>
<init-param>
<param-name>uploadDirectory</param-name>
<param-value>/tmpDir3/</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<servlet-name>Faces Servlet</servlet-name>
</filter-mapping>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>/faces/*</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>faces/index.xhtml</welcome-file>
</welcome-file-list>
</web-app>
问题是方法uploadImage
没有被调用。
我的代码有什么问题或缺少什么?
答案 0 :(得分:0)
如果添加@ManagedBean
注释,则bean实例的名称将是您的类的名称(带小写的第一个字母)。在您的示例中,由于您的类的名称为TestClass
,因此您的bean的名称将为testClass
。
因此,当您编写一个应该在此bean上调用方法的EL表达式时,您必须编写#{testClass.myMethod}
(在您的情况下,这将是#{testClass.uploadImage}
。
请参阅:http://docs.oracle.com/javaee/6/api/javax/faces/bean/ManagedBean.html