我有一张账单表，我想列出账单上的所有产品。我在帐单var d = new Array(0,0,0,0,0);
function aaa()
{
var i = 0
alert( "hello" );
for(i; i<5; i++){
var randomn = Math.random();
var da = Math.floor(randomn*6) +1;
var elid = "d" + i;
var di = document.getElementById(elid);
di.src = "pix/dice" + d + ".gif";
}
}
function newGame(){
}
function click1() {
var total = 0;
for (var i = 0; i <5; i++){
if (d[i] == 1 ){total +=1;}
var loco = document.getElementById("s1");
loco.innerHTML = total;
}
}内保存了<h1>Yahtzee</h1>
<div style = "text-align:center;">
<img src = "pix/dice0.gif" id = "d0">
<img src = "pix/dice0.gif" id = "d1">
<img src = "pix/dice0.gif" id = "d2">
<img src = "pix/dice0.gif" id = "d3">
<img src = "pix/dice0.gif" id = "d4">
</div>
<table border =2 align =center>
<tr>
<td class = "c1"> 1's </td>
<td class = "c2"><div class = "scr" id = "s1" onclick= "click1()" > </div> </td>
<td class = "c3" rowspan = "6"><button id = "roll;" onclick = "aaa();">Roll</button> </td>
</tr>
<tr>
<td class = "c1"> 2's </td>
<td class = "c2"><div class = "scr" id = "s2"> </div> </td>
</tr>
<tr>
<td class = "c1"> 3's </td>
<td class = "c2"><div class = "scr" id = "s3"> </div> </td>
</tr>
<tr>
<td class = "c1"> 4's </td>
<td class = "c2"><div class = "scr" id = "s4"> </div> </td>
</tr>
<tr>
<td class = "c1"> 5's </td>
<td class = "c2"><div class = "scr" id = "s5"> </div> </td>
</tr>
<tr>
<td class = "c1"> 6's </td>
<td class = "c2"><div class = "scr" id = "s6"> </div> </td>
</tr>
<tr>
<td class = "c1"> 3 of a kind </td>
<td class = "c2"><div class = "scr" id = "k3"> </div> </td>
<td class = "c3" rowspan = "8"><button id = "ng" onclick="newGame()"; >New Game </button> </td>
</tr>
<tr>
<td class = "c1"> 4 of a kind </td>
<td class = "c2"><div class = "scr" id = "k4"> </div> </td>
</tr>
<tr>
<td class = "c1"> Full House </td>
<td class = "c2"><div class = "scr" id = "fh"> </div> </td>
</tr>
<tr>
<td class = "c1"> Sm Straight </td>
<td class = "c2"><div class = "scr" id = "ss"> </div> </td>
</tr>
<tr>
<td class = "c1"> Lg Straight </td>
<td class = "c2"><div class = "scr" id = "ls"> </div></td>
</tr>
<tr>
<td class = "c1"> Yahtzee </td>
<td class = "c2"><div class = "scr" id = "yah"> </div> </td>
</tr>
<tr>
<td class = "c1"> Chance </td>
<td class = "c2"><div class = "scr" id = "cha"> </div> </td>
</tr>
<tr>
<td class = "c1"> Total</td>
<td class = "c2"><div class = "scr" id = "tot"> </div> </td>
</tr>
</table>个对象。
当我创建ProductInBill时，我的常用方法是创建JavaFX字段。在控制器类上，我有我的字段：
ArrayList<ProductInBill>然后我使用TableView方法，代码如下：
@FXML public TableColumn<ProductInBill, String> finishedBillProductNameColumn;
@FXML public TableColumn<Integer, Integer> finishedBillProductNumberColumn;
@FXML public TableColumn<ProductInBill, Integer> finishedBillProductPriceBruttoLabel;
@FXML public TableColumn<Integer, Integer> finishedBillProductTotalAmountColumn;
@FXML public TableView finishedBillProductTable;
还有一个setUp()方法来加载必要的private void setUpFinishedBillProductTable() {
finishedBillProductNameColumn.setCellValueFactory(new PropertyValueFactory<ProductInBill, String>("productName"));
finishedBillProductPriceBruttoLabel.setCellValueFactory(new PropertyValueFactory<ProductInBill, Integer>("productPrice"));
}
对象，将它们保存到TableList并将其提供给表。
updateBillTable()这一切都很好。我现在的问题是，我的ProductInBill上还有一个字段，其中包含计算出的Integer值，我不想在对象中保存。
以 private void updateFinishedBillProductTable(Bill bill) {
LOG.info("Start reading all Products from Bill");
for(ProductInBill product : bill.getProducts()){
finishedBillProductCurrent.add(product);
}
finishedBillProductTable.getItems().clear();
if(!finishedBillProductCurrent.isEmpty()) {
for (ProductInBill p : finishedBillProductCurrent) {
finishedBillProductTableList.add(p);
}
//here i want to calculate some other Integer values based on the ProductInBill values and insert them to the table too.
finishedBillProductTable.setItems(finishedBillProductTableList);
}
}
为例。我想在我的TableView上进行迭代，找到所有具有相同名称的产品，并将相同项目的数量填充到表格中。
我该怎么做？我发现只有解决方案，我必须使用我的对象的值来插入我的finishedBillProductNumberColumn。
答案 0 :(得分：1)
您只需为这些案例编写自定义CellValueFactory，而不是使用预制的CellValueFactory。使用PropertyValueFactory只是一个方便的捷径来填充成员的细胞。
对于你的例子：
finishedBillProductNameColumn.setCellValueFactory(new PropertyValueFactory<ProductInBill, String>("productName"));
只是一种较短的方式：
finishedBillProductNameColumn.setCellValueFactory( cellData -> {
ProductInBill productInBill = cellData.getValue();
return data == null ? null : new SimpleStringProperty(productInBill.getProductName());
});
话虽如此，我对第二种语法有100％的偏好。因为在第一个，如果你重命名该成员，并且你忘了在那里更改它，你不会知道在你到达应用程序之前有一个错误。此外，它允许显示与成员不同的价值。
作为finishedBillProductNumberColumn的一个具体示例，您可以这样做：
首先更改定义（第一个通用类型是使用cellData.getValue()收到的类型：
@FXML public TableColumn<ProductInBill, Integer> finishedBillProductNumberColumn;
然后定义你想要的CellValueFactory：
finishedBillProductNumberColumn.setCellValueFactory( cellData -> {
ProductInBill productInBill = cellData.getValue();
if(productionInBill != null){
Long nbProduct = finishedBillProductTable.getItems().stream().filter(product -> product.getProductName().equals(productInBill.getProductName())).count();
return new SimpleIntegerProperty(nbProduct.intValue()).asObject();
}
return null;
});
希望它有所帮助！