4
我知道那裏有數據，因爲當我遍歷列表時，我可以看到我的所有數據都在那裏。即使只是打印我的數據看起來不錯，但我只是不知道爲什麼它只是不能似乎讓它顯示出來爲什麼我的表沒有被填充？
我用於填充數據庫的方法：
protected void populateDatabase() throws SQLException {
empInfoTable = new TableView<>();
empIDColumn.setCellValueFactory(new PropertyValueFactory<EmployeeMaster, String>("employeeID"));
fNameColumn.setCellValueFactory(new PropertyValueFactory<EmployeeMaster, String>("firstName"));
lNameColumn.setCellValueFactory(new PropertyValueFactory<EmployeeMaster, String>("lastName"));
gNameColumn.setCellValueFactory(new PropertyValueFactory<EmployeeMaster, String>("groupName"));
hoursColumn.setCellValueFactory(new PropertyValueFactory<EmployeeMaster, String>("estimatedHours"));
payColumn.setCellValueFactory(new PropertyValueFactory<EmployeeMaster, String>("estimatedPay"));
List<EmployeeMaster> empList = getEmpFromDatabase();
Iterator<EmployeeMaster> iterator = empList.iterator();
System.out.print(iterator.next());
empInfoTable.getItems().addAll(empList);
//System.out.print(empInfoTable.getItems());
}
方法從數據庫中抓取數據
private List<EmployeeMaster> getEmpFromDatabase() throws SQLException {
List<EmployeeMaster> row = new ArrayList<EmployeeMaster>();
Connection connect = DriverManager.getConnection(
"jdbc:mysql://localhost:3306/AUStudentEmployees", "root",
"password");
Statement stmnt = connect.createStatement();
ResultSet result = stmnt.executeQuery("select * from emp_info ORDER by EmployeeID");
while(result.next()){
String empID = result.getString("EmployeeID");
String fName = result.getString("FirstName");
String lName = result.getString("LastName");
String gName = result.getString("GroupName");
String hours = result.getString("EstimatedHours");
String pay = result.getString("EstimatedPay");
EmployeeMaster empInfo = new EmployeeMaster(empID, fName, lName, gName, hours, pay);
row.add(empInfo);
//empInfoTable.getItems().addAll(row);
//System.out.print(row);
}
return row;
}
類的所有字符串屬性：
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
public class EmployeeMaster {
public EmployeeMaster(){
}
private final StringProperty employeeID = new SimpleStringProperty(this, "EmployeeID");
private final StringProperty firstName = new SimpleStringProperty(this, "FirstName");
private final StringProperty lastName = new SimpleStringProperty(this, "LastName");
private final StringProperty groupName = new SimpleStringProperty(this, "GroupName");
private final StringProperty estimatedHours = new SimpleStringProperty(this, "EstimatedHours");
private final StringProperty estimatedPay = new SimpleStringProperty(this, "EstimatedPay");
public StringProperty employeeIDProperty(){
return employeeID;
}
public StringProperty firstNameProperty(){
return firstName;
}
public StringProperty lastNameProperty(){
return lastName;
}
public StringProperty groupNameProperty(){
return groupName;
}
public StringProperty estimatedHoursProperty(){
return estimatedHours;
}
public StringProperty EstimatedPayProperty(){
return estimatedPay;
}
public final String getEmployeeID() {
return employeeIDProperty().get();
}
public final String getFirstName() {
return firstNameProperty().get();
}
public final String getLastName() {
return lastNameProperty().get();
}
public final String getGroupName() {
return groupNameProperty().get();
}
public final String getEstimatedHours() {
return estimatedHoursProperty().get();
}
public final String getEstimatedPay() {
return EstimatedPayProperty().get();
}
public final void setEmployeeID(String EmployeeID){
employeeIDProperty().set(EmployeeID);
}
public final void setFirstName(String fName){
firstNameProperty().set(fName);
}
public final void setLastName(String lName){
lastNameProperty().set(lName);
}
public final void setGroupName(String gName){
groupNameProperty().set(gName);
}
public final void setEstimatedHours(String EstimatedHours){
estimatedHoursProperty().set(EstimatedHours);
}
public final void setEstimatedPay(String EstimatedPay){
EstimatedPayProperty().set(EstimatedPay);
}
public EmployeeMaster(String EmployeeID, String fName, String lName, String gName,
String EstimatedHours, String EstimatedPay){
setEmployeeID(EmployeeID);
setFirstName(fName);
setLastName(lName);
setGroupName(gName);
setEstimatedHours(EstimatedHours);
setEstimatedPay(EstimatedPay);
}
}
編輯：FXML文件
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.layout.AnchorPane?>
<AnchorPane prefHeight="300.0" prefWidth="650.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="studentempsignin.Admin_Controller">
<children>
<TableView layoutX="25.0" layoutY="29.0" onSort="#populateDatabase" prefHeight="166.0" prefWidth="600.0">
<columns>
<TableColumn fx:id="empIDColumn" prefWidth="100.0" text="Employee ID" />
<TableColumn fx:id="fNameColumn" prefWidth="100.0" text="First Name" />
<TableColumn fx:id="lNameColumn" prefWidth="100.0" text="Last Name" />
<TableColumn fx:id="gNameColumn" prefWidth="100.0" text="Group" />
<TableColumn fx:id="hoursColumn" prefWidth="100.0" text="Hours" />
<TableColumn fx:id="payColumn" prefWidth="100.0" text="Pay" />
</columns>
</TableView>
</children>
</AnchorPane>
我試了一下（我也添加了'TableColumn's），它的工作原理。你能發佈完整的代碼嗎？你如何創建表格以及如何填充列？ – DVarga
它真的有用嗎？我使用scenebuilder來創建表格。你填什麼是什麼意思？我不認爲我做到了。 empInfoTable.getItems（）.addAll（empList）不會填充列嗎？ –
是的。我添加了像empInfoTable.getColumns（）.addAll（empIDColumn，fNameColumn，lNameColumn，gNameColumn，hoursColumn，payColumn）這樣的列;'在setCellValueFactory'調用之後，一切正常。這是@Guenther在他的回答中提出的。但在你的情況下，你已經從FXML注入了表，問題是這行'empInfoTable = new TableView <>（）;'。在這裏，你重新初始化了'TableView'（它已經被'FXMLLoader'初始化了），所以你失去了添加在FXML文件中的列。刪除這一行，我想這將不會做任何額外的修改。 – DVarga