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對象的列表：我通過使用與陣列的符號顯示此陣列JSF目標不可達， '' 0 '' 返回null：javax.el.PropertyNotFoundException
private ArrayList<LegBeanForInsert> listOfLegs;
：0，1，... 。位置例如：
<p:selectOneMenu value="#{otcdEventsBean.listOfLegs[0].fixvar}"
effect="fade" style="width:100px; height:25px"
panelStyle="width:80px" >
<f:selectItem itemLabel="Select" itemValue="" />
<f:selectItems value="#{otcdEventsBean.fixedVariableCodes}"
itemValue="#{otcdEventsBean.listOfLegs[0].fixvar}" />
<p:ajax listener="#{otcdEventsBean.fixvarchange}" event="change" update="panelUpdate"/>
</p:selectOneMenu>
ERROR：
value="#{otcdEventsBean.listOfLegs[0].fixvar}": Target Unreachable, ''0'' returned null: javax.el.PropertyNotFoundException
：
public void initLeg(){
for(int i=0;i<8;i++){
LegBeanForInsert beanLeg = new LegBeanForInsert();
beanLeg.setCallamount(new BigDecimal(0));
beanLeg.setFixvar("");
this.listOfLegs.add(beanLeg);
}
}
這個方法是由另一個頁面調用，當頁面renderd劑量不會有問題的網頁：
public void setProduct(Object product1, Object product2) {
System.out.println("BEGIN::setProduct: " + (String) product2);
if (product1 instanceof EqdProduct) {
this.eqdProdToedit = (EqdProduct) product1;
} else if (product1 instanceof CURROPTRBTProduct) {
this.rbtProdType = (CURROPTRBTProduct) product1;
} else if (product1 instanceof COMAsianProduct) {
this.comAsianProd = (COMAsianProduct) product1;
} else if (product1 instanceof CRDProductType) {
this.crdProduct = (CRDProductType) product1;
} else if (product1 instanceof ComSwapProduct) {
firstLegComSw = (ComSwapProduct) product1;
if (product2 instanceof ComSwapProduct) {
System.out.println("Com Sawp second prod");
secondLegComSw = (ComSwapProduct) product2;
}
} else if (product1 instanceof List) {
// bisogna settare LegBeanForInsert, LE GAMBE SONO 8 !!
List<?> legs = (List<?>) product1;
String s = (String) product2;
System.out.println("setProduct 2nd arg: " + product2);
if (s.equals("Legs")) {
for (int i = 0; i < legs.size(); i++) {
Leg leg = (Leg) legs.get(i);
LegBeanForInsert beanLeg = new LegBeanForInsert();
beanLeg.setCallamount(new BigDecimal(leg.getCallamount()));
beanLeg.setCallcurrency(leg.getCallcurrency());
beanLeg.setCallmaturity(leg.getCallmaturityNumber());
beanLeg.setCodintord(leg.getCodintord());
beanLeg.setDayconvention(leg.getDayconvention());
beanLeg.setEnddate(leg.getEnddate());
beanLeg.setEventcode(leg.getEventcode());
beanLeg.setEventtype(leg.getEventtype());
beanLeg.setExercisemode(leg.getExercisemode());
beanLeg.setFixvar(leg.getFixvar());
beanLeg.setEndDate(leg.getFmtenddate());
beanLeg.setStartDate(leg.getFmtstartdate());
beanLeg.setFrequency(leg.getFrequency());
beanLeg.setFrequencymultiplier(leg.getFrequencymultiplier());
beanLeg.setFrequencyunit(leg.getFrequencyunit());
beanLeg.setInareas(leg.getInareas());
beanLeg.setIndexname(leg.getIndexname());
beanLeg.setMargin(leg.getMargin());
beanLeg.setNotional(leg.getNotional());
beanLeg.setNumber(leg.getNumber());
beanLeg.setOptioncashdelivery(leg.getOptioncashdelivery());
beanLeg.setOptionmaturity(leg.getOptionMatirityNumber());
beanLeg.setOptiontype(leg.getOptiontype());
beanLeg.setPaycurrency(leg.getPaycurrency());
beanLeg.setPutamount(leg.getPutamount());
beanLeg.setPutcurrency(leg.getPutcurrency());
beanLeg.setPutmaturity(leg.getPutMatirityNumber());
beanLeg.setQuantityunit(leg.getQuantityunit());
beanLeg.setRate(leg.getRate());
beanLeg.setRateconvention(leg.getRateconvention());
beanLeg.setSign(leg.getSign());
beanLeg.setStartdate(leg.getStartdate());
beanLeg.setStrike(leg.getStrike());
this.listOfLegs.add(beanLeg);
}
} else {
System.out.println("MoneyD 2nd arg: " + product2);
for (int i = 0; i < legs.size(); i++) {
LegMoneyDeal leg = (LegMoneyDeal) legs.get(i);
this.legMoneyD.add(leg);
}
}
} else {
// non nè nessuno di quelli bisogna settare a null tutto quanto
otcdEvents = new OtcdEvents();
crdProduct = new CRDProductType();
firstLegComSw = new ComSwapProduct();
secondLegComSw = new ComSwapProduct();
comAsianProd = new COMAsianProduct();
rbtProdType = new CURROPTRBTProduct();
listOfLegs = new ArrayList<LegBeanForInsert>();
legMoneyD = new ArrayList<LegMoneyDeal>();
eqdProdToedit = new EqdProduct();
}
}
構造：
public OtcdEventsBean() {
try {
Context ctx = new InitialContext();
otcdEvents = new OtcdEvents();
crdProduct = new CRDProductType();
firstLegComSw = new ComSwapProduct();
secondLegComSw = new ComSwapProduct();
comAsianProd = new COMAsianProduct();
rbtProdType = new CURROPTRBTProduct();
ds = (DataSource) ctx.lookup("java:comp/env/jdbc/myoracleDS");
rederField = true;
listOfLegs = new ArrayList<LegBeanForInsert>();
initLeg();
eqdProdToedit = new EqdProduct();
legMoneyD = new ArrayList<LegMoneyDeal>();
legMoneyD.add(new LegMoneyDeal());
legMoneyD.add(new LegMoneyDeal());
fieldsEditingDisabled = false;
loginBean = (LoginBean) FacesContext.getCurrentInstance().getApplication().evaluateExpressionGet(FacesContext.getCurrentInstance(), "#{loginBean}", LoginBean.class);
setFixedVariableCodes(new String[2]);
getFixedVariableCodes()[0] = "Fixed";
getFixedVariableCodes()[1] = "Variable";
setSignPremiumCodes(new String[2]);
signPremiumCodes[0] = "Pay";
signPremiumCodes[1] = "Receive";
setFrequencyUnitCodes(new String[4]);
frequencyUnitCodes[0] = "day";
frequencyUnitCodes[1] = "week";
frequencyUnitCodes[2] = "month";
frequencyUnitCodes[3] = "year";
setCashDeliveryCodes(new String[2]);
cashDeliveryCodes[0] = "C";
cashDeliveryCodes[1] = "D";
setOptionTypeCodes(new String[2]);
optionTypeCodes[0] = "CALL";
optionTypeCodes[1] = "PUT";
} catch (NamingException e) {
e.printStackTrace();
}
}
全豆代碼：
http://pastebin.com/EbfuSwHN
對不起，我最後的評論是誤導。現在我唯一能想到的就是你的'listOfLegs'字段在給定的時間是空的。請發佈您的託管bean定義，以更好地分析問題。 –
@LuiggiMendoza我發佈了我的完整bean代碼 –
嘗試將所有託管bean構造函數邏輯移動到'@PostConstruct public void init（）'方法中，重新編譯您的類，重新部署您的Web應用程序並對其進行測試。 –