与Viewparam转换器一起使用时的Prettyfaces问题 [英] Prettyfaces issue when using with viewparam converter
问题描述
我正在使用jsf 2.1，prettyfaces 3.3.3和hibernate jpa 3.6.7.我有国家/地区页面，并且正在尝试使用CommandButton发送评论.
i'm using jsf 2.1, prettyfaces 3.3.3 and hibernate jpa 3.6.7. i have country page and i'm trying to send comment with commandbutton.
country.xhtml:
country.xhtml:
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<f:metadata>
<f:viewParam name="country" value="#{countryBean2.selectedCountry}" converter="countryConverter"
required="true" />
</f:metadata>
<h:head>
<title>Country</title>
</h:head>
<h:body>
<h:form id="form">
<h:outputText value="#{countryBean2.selectedCountry.countryName}" />
<br/><br/>
<h:outputText value="Comment:" />
<h:inputText value="#{countryBean2.comment}" />
<br/>
<h:commandButton value="Send" action="#{countryBean2.sendComment}" />
</h:form>
</h:body>
</html>
countryConverter:
countryConverter:
public class CountryConverter implements Converter {
public static EntityCountry country = new EntityCountry();
EntityManagerFactory emf = Persistence.createEntityManagerFactory("testPU");
@Override
public EntityCountry getAsObject(FacesContext context, UIComponent component, String value) {
EntityManager em = emf.createEntityManager();
Query query = em.createQuery("SELECT c FROM EntityCountry c WHERE c.countryName = :countryName")
.setParameter("countryName", value);
country = (EntityCountry) query.getSingleResult();
return country;
}
@Override
public String getAsString(FacesContext context, UIComponent component, Object value) {
EntityCountry c = (EntityCountry) value;
return c.getCountryName();
}
pretty-config.xml:
pretty-config.xml:
<pretty-config xmlns="http://ocpsoft.com/prettyfaces/3.3.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://ocpsoft.com/prettyfaces/3.3.0
http://ocpsoft.com/xml/ns/prettyfaces/ocpsoft-pretty-faces-3.3.0.xsd">
<url-mapping id="home">
<pattern value="/" />
<view-id value="/faces/index.xhtml" />
</url-mapping>
<url-mapping id="country">
<pattern value="/country/#{country}" />
<view-id value="/faces/country.xhtml" />
</url-mapping>
</pretty-config>
faces-config.xml中的转换器配置:
converter configuration in faces-config.xml:
<converter>
<converter-id>countryConverter</converter-id>
<converter-for-class>test.EntityCountry</converter-for-class>
<converter-class>test.CountryConverter</converter-class>
</converter>
当我首先打开localhost:8080/test/country/england页面时，一切正常.但是当我尝试通过命令按钮发送评论时，countryConverter的getAsObject方法使用错误的字符串参数(例如"test.CountryBean@bd9eff")再次调用，并且找不到实体.
when i open localhost:8080/test/country/england page firstly, everything works well. but when i try to send comment via commandbutton, countryConverter's getAsObject method is calling again with wrong string parameter (such as "test.CountryBean@bd9eff") and entity can not be found.
当我使用默认的丑陋网址(例如localhost:8080/test/faces/country.xhtml?country = england)并尝试发送注释时，countryConverter的getAsObject方法使用真正的字符串参数调用，并且我可以成功发送注释.我认为这是一个prettyfaces错误，但我想使用漂亮的网址.
when i use with default ugly url (such as localhost:8080/test/faces/country.xhtml?country=england) and try to send comment, countryConverter's getAsObject method is calling with true string parameter and i can send comment successfully. i think it is a prettyfaces bug but i want to use pretty urls.
推荐答案
在pretty-config.xml中，我还有另一个以"country"命名的托管bean，并且有以"country"命名的模式值.
i have another managed bean that named with "country" and i have pattern value named with "country" in pretty-config.xml.
@Named("country")
@SessionScoped
public class CountryBean implements Serializable {
.......
}
当我更改@Named("country")值时，它可以成功工作.
when i change @Named("country") value, it is working successfully.
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