我在Netbeans 7.4 / JDK 1.7环境中运行Tomcat 7上的简单应用程序时遇到了问题。
错误讯息：/index.xhtml: Property 'nazwa' not found on type java.lang.String
Tomcat日志：
sty 26, 2014 2:58:37 PM com.sun.faces.context.ExceptionHandlerImpl log
1100: JSF1073: javax.el.ELException caught during processing of RENDER_RESPONSE 6 : UIComponent-ClientId=, Message=/index.xhtml: Property 'nazwa' not found on type java.lang.String
sty 26, 2014 2:58:37 PM com.sun.faces.context.ExceptionHandlerImpl log
1100: /index.xhtml: Property 'nazwa' not found on type java.lang.String
javax.el.ELException: /index.xhtml: Property 'nazwa' not found on type java.lang.String
at com.sun.faces.facelets.compiler.TextInstruction.write(TextInstruction.java:88)
at com.sun.faces.facelets.compiler.UIInstructions.encodeBegin(UIInstructions.java:82)
at com.sun.faces.facelets.compiler.UILeaf.encodeAll(UILeaf.java:207)
at com.sun.faces.facelets.component.RepeatRenderer.encodeChildren(RepeatRenderer.java:104)
at com.sun.faces.facelets.component.UIRepeat.process(UIRepeat.java:527)
at com.sun.faces.facelets.component.UIRepeat.encodeChildren(UIRepeat.java:992)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1896)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1899)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1899)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:451)
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2430)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2419)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
faces-config.xml：
<?xml version='1.0' encoding='UTF-8'?>
<faces-config version="2.2"
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-facesconfig_2_2.xsd">
<managed-bean>
<managed-bean-name>menedzer</managed-bean-name>
<managed-bean-class>pl.helion.jeeweb.notowaniagieldowe.entity.Menedzer</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>
</faces-config>
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>
<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>
index.html：
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets">
<h:head>
<title>Facelet Title</title>
</h:head>
<h:body>
<h1>Notowania gieldowe</h1>
<table>
<tr>
<th>Nazwa</th><th>Symbol</th><th>Cena</th><th>Zmiana %</th>
</tr>
<ui:repeat var="spolka" value="#(menedzer.spolki}">
<tr>
<td>#{spolka.nazwa}</td>
<td>#{spolka.symbol}</td>
<td>#{spolka.ostatnie.cena}</td>
<td>#{spolka.ostatnie.zmiana}</td>
</tr>
</ui:repeat>
</table>
</h:body>
</html>
pl.helion.jeeweb.notowaniagieldowe.entity.Menedzer：
package pl.helion.jeeweb.notowaniagieldowe.entity;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
public class Menedzer {
private List<Spolka> spolki;
public List<Spolka> getSpolki() {
return spolki;
}
public void setSpolki(List<Spolka> spolki) {
this.spolki = spolki;
}
public Menedzer(){
spolki = new ArrayList<Spolka>(3);
Date d = new Date();
spolki.add(new Spolka("Kocia Spółka Węglowa", "KSW", "energetyczny", 20.0, 11.1, d));
spolki.add(new Spolka("KitKompDotCom", "KKDC", "informatyczny", 90.0, 3.4, d));
spolki.add(new Spolka("Kocie Dance Studio", "KDS", "rozrywkowy", 15.0, -11.7, d));
}
}
pl.helion.jeeweb.notowaniagieldowe.entity.Spolka：
package pl.helion.jeeweb.notowaniagieldowe.entity;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
public class Spolka {
public String getNazwa() {
return nazwa;
}
public void setNazwa(String nazwa) {
this.nazwa = nazwa;
}
public String getSymbol() {
return symbol;
}
public void setSymbol(String symbol) {
this.symbol = symbol;
}
public String getSektor() {
return sektor;
}
public void setSektor(String sektor) {
this.sektor = sektor;
}
public List<Notowanie> getNotowania() {
return notowania;
}
public void setNotowania(List<Notowanie> notowania) {
this.notowania = notowania;
}
public Notowanie getOstatnie() {
if (this.ostatnie == null){
if (this.getNotowania() != null && !this.getNotowania().isEmpty()){
this.ostatnie = this.getNotowania().get(this.getNotowania().size() - 1);
}
}
return this.ostatnie;
}
public void setOstatnie(Notowanie ostatnie) {
this.ostatnie = ostatnie;
}
private String nazwa;
private String symbol;
private String sektor;
private List<Notowanie> notowania;
private Notowanie ostatnie;
public Spolka(){}
public Spolka(String nazwa, String symbol, String sektor){
this.nazwa = nazwa;
this.symbol = symbol;
this.sektor = sektor;
}
public Spolka(String nazwa, String symbol, String sektor, double cena, double zmiana, Date dzien){
this(nazwa, symbol, sektor);
this.notowania = new ArrayList<Notowanie>();
this.notowania.add(new Notowanie(cena, dzien, zmiana, this));
}
}
pl.helion.jeeweb.notowaniagieldowe.entity.Notowanie：
package pl.helion.jeeweb.notowaniagieldowe.entity;
import java.util.Date;
public class Notowanie {
private double cena;
private Date dzien;
private double zmiana;
private Spolka spolka;
public Notowanie(){}
public Notowanie (double cena, Date dzien, double zmiana, Spolka spolka){
this.cena = cena;
this.dzien = dzien;
this.zmiana = zmiana;
this.spolka = spolka;
}
public double getCena() {
return cena;
}
public void setCena(double cena) {
this.cena = cena;
}
public Date getDzien() {
return dzien;
}
public void setDzien(Date dzien) {
this.dzien = dzien;
}
public double getZmiana() {
return zmiana;
}
public void setZmiana(double zmiana) {
this.zmiana = zmiana;
}
public Spolka getSpolka() {
return spolka;
}
public void setSpolka(Spolka spolka) {
this.spolka = spolka;
}
}
该服务器无法看到此对象的原因是什么？
答案 0 :(得分：0)
文件index.html中的愚蠢错误：
而不是<ui:repeat var="spolka" value="#(menedzer.spolki}">
它应该是<ui:repeat var="spolka" value="#{menedzer.spolki}">
只有一个括号（'（'和'{'）不同，对我来说它是看不见的......