【发布时间】：2015-10-09 06:41:55
【问题描述】：
我试过了，但我卡在了从 comboboxtablecell 获取所选项目的相应值但无法将值添加到表格视图中的相应列的点上
Controller.java
public class controller {
GetConnection gc = new GetConnection();
PreparedStatement pst;
ResultSet rs;
Statement st;
private ObservableList<Users> datas = FXCollections.observableArrayList();
public controller(){}
@FXML
private TableView<Users> table;
@FXML
private TableColumn<Users,String> c1;
@FXML
private TableColumn<Users,String> c2;
@FXML
private TableColumn<Users,String> c3;
@FXML
private void editable() {
try {
ObservableList<Users> datas = FXCollections.observableArrayList();
ObservableList<String> item = FXCollections.observableArrayList();
ObservableList<String> iprice = FXCollections.observableArrayList();
String sql = "select * from itemsadd";
pst = gc.getConnection().prepareStatement(sql);
rs = pst.executeQuery();
while (rs.next()) {
String name = rs.getString("itemcode");
String cat=rs.getString("unitprice");
item.add(name);
iprice.add(cat);
System.out.println("probs" + item);
}
ResultSet rs2 = gc.getConnection().createStatement()
.executeQuery("SELECT * FROM itemsadd WHERE itemcode=1001");
while (rs2.next()) {
datas.add(new Users(rs2.getString("itemcode"),rs2.getString("category"),rs2.getString("unitprice")));
}
c1.setCellValueFactory(new PropertyValueFactory("Itemc"));
c1.setCellFactory(ComboBoxTableCell.forTableColumn(item));
for(String name:item){
c1.setCellValueFactory(new PropertyValueFactory("Itemc"));
c1.setCellFactory(ComboBoxTableCell.forTableColumn(item));
System.out.println("hell3"+name);
}c1.setOnEditCommit( ( TableColumn.CellEditEvent<Users, String> e ) ->
{
String newValue = e.getNewValue();
int index = e.getTablePosition().getRow();
System.out.println("position"+index);
try{
System.out.println("new values"+newValue);
String dsql="SELECT category,unitprice FROM itemsadd WHERE itemcode=?;";
pst=gc.getConnection().prepareStatement(dsql);
pst.setString(1, newValue); //this replaces the 1st "?" in the query for username
rs=pst.executeQuery();
while(rs.next())
{
String category1 = rs.getString(1);
String price1 = rs.getString(2);
System.out.println("category is"+category1);
System.out.println("unitprice is"+price1);
}
}catch(Exception ed){} } );
c2.setCellValueFactory(new PropertyValueFactory("category"));
c2.setCellFactory(TextFieldTableCell.forTableColumn());
c3.setCellValueFactory(new PropertyValueFactory("unitprice"));
c3.setCellFactory(ComboBoxTableCell.forTableColumn(iprice));
table.setEditable(true);
table.getItems().clear();
table.setItems(datas);
} catch (Exception e) {
e.printStackTrace();
System.out.println("Error on Building Data");
}
}
public static class Users {
private StringProperty Itemc;
private StringProperty category;
private StringProperty unitprice;
private Users(String Itemc,String category,String unitprice) {
this.Itemc= new SimpleStringProperty(Itemc);
this.category=new SimpleStringProperty(category);
this.unitprice=new SimpleStringProperty(unitprice);
}
public String getItemc() {
return Itemc.get();
}
public void setItemc(String Itemc) {
this.Itemc.set(Itemc);
}
public StringProperty ItemcProperty() {
return Itemc;
}
public String getcategory() {
return category.get();
}
public void setcategory(String category) {
this.category.set(category);
}
public StringProperty categoryProperty() {
return category;
}
public String getunitprice() {
return unitprice.get();
}
public void setunitprice(String unitprice) {
this.unitprice.set(unitprice);
}
public StringProperty unitpriceProperty() {
return unitprice;
}}
}
Table.fxml
<AnchorPane id="AnchorPane" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="javafxapplication47.controller">
<children>
<TableView fx:id="table" editable="true" layoutX="136.0" layoutY="58.0" onKeyPressed="#editable" prefHeight="200.0" prefWidth="335.0">
<columns>
<TableColumn fx:id="c1" prefWidth="116.0" text="Code" />
<TableColumn fx:id="c2" prefWidth="115.0" text="Address" />
<TableColumn fx:id="c3" prefWidth="102.0" text="Price" />
</columns>
</TableView>
</children>
</AnchorPane>
Tableview.java
public class Tableveiw extends Application {
private Stage primaryStage;
private AnchorPane pane;
@Override
public void start(Stage primaryStage) {
this.primaryStage = primaryStage;
this.primaryStage.setTitle("AddressApp");
showPerson();
}
public void showPerson() {
try {
// Load root layout from fxml file.
FXMLLoader loader = new FXMLLoader();
loader.setLocation(Tableveiw.class
.getResource("table.fxml"));
pane= (AnchorPane) loader.load();
// Show the scene containing the root layout.
Scene scene = new Scene(pane);
primaryStage.setScene(scene);
primaryStage.show();
} catch (IOException e) {
e.printStackTrace();
}}
public static void main(String[] args) {
launch(args);
}
}
GetConnection.java
public class GetConnection{
public Connection getConnection() throws Exception
{
Connection con=null;
try {
System.out.println("MySQL Connect Example.");
String url = "jdbc:mysql://localhost:3306/";
String dbName = "login";
String driver = "com.mysql.jdbc.Driver";
Class.forName(driver).newInstance();
con = DriverManager.getConnection(url+dbName,"root","");
} catch (Exception e) {
e.printStackTrace();
}
return con;
}
public static void main(String arg[])
{
GetConnection con =new GetConnection();
System.out.println("Connection"+con);
}
}
上面的代码是可运行和简化的，程序有一个tableview和三列，第一个columncell是一个comboboxtablecell，里面有项目。第二个columncell是一个可编辑的文本字段，第三个columncell是一个comboboxtablecell，它的项目在数据库中。我已经尝试过，每当我在 category.java System.out.println("categoryis"+category1); System.out.println("单价为"+price1); .每当我在表格视图的组合框中选择项目时，请帮助我更改表格视图中的值。
【问题讨论】：
-
请使用 IDE 的代码格式化快捷方式。我保证你会喜欢的！所以有 3 列，其中 2 列有组合框。为什么不删除不相关的列，只留下 1 个受您问题影响的列。让我们首先清楚并简化代码。 WDYT？
-
好吧，代码可能是可运行的 - 在 您的 环境中，而不是在我们的环境中；-) 您必须用模拟替换数据库访问，例如 f.i。用于查找项目的地图/列表
-
投票结束，因为不清楚你在问什么 - 请将其分解为完全 一个 问题并使其真正 SSCCE