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嘗試從數據庫獲取數據並在數據庫中顯示時遇到問題。我從用戶輸入中獲取並存儲爲搜索變量。這是我如何設置我的表格:無法使用數據庫中的數據填充表
//I get the user input to perform search
@FXML
public void searchResident(ActionEvent event){
String search=getTb_search().getText();
if(search.equals("")){
Dialogs.showErrorDialog(null, "Please enter something", "Blank fields detected", "");
}else{
setUpSearchTable(search);
}
}
//How I set up my table
public void setUpSearchTable(String search) {
TableColumn rmNameCol = new TableColumn("Name");
rmNameCol.setVisible(true);
rmNameCol.setCellValueFactory(new Callback<TableColumn.CellDataFeatures<SearchNeedyResidentController, String>, ObservableValue<String>>() {
public ObservableValue<String> call(TableColumn.CellDataFeatures<SearchNeedyResidentController, String> p) {
return p.getValue().searchNameProperty();
}
});
TableColumn rmNricCol = new TableColumn("NRIC");
rmNricCol.setCellValueFactory(new PropertyValueFactory<SearchNeedyResidentController, String>("search_nric"));
rmNricCol.setMinWidth(150);
TableColumn rmPhNoCol = new TableColumn("Phone Number");
rmPhNoCol.setCellValueFactory(new PropertyValueFactory<SearchNeedyResidentController,String>("search_phNo"));
rmPhNoCol.setMinWidth(350);
TableColumn rmIncomeCol = new TableColumn("Income($)");
rmIncomeCol.setCellValueFactory(new PropertyValueFactory<SearchNeedyResidentController, String>("search_income"));
rmIncomeCol.setMinWidth(100);
ResidentManagement.entity.NeedyResidentEntity searchValue= new ResidentManagement.entity.NeedyResidentEntity();
//viewProduct.setColumnResizePolicy(TableView.CONSTRAINED_RESIZE_POLICY);
table_search.setEditable(false);
table_search.getColumns().addAll(rmNricCol, rmNameCol, rmIncomeCol, rmPhNoCol);
table_search.getItems().setAll(searchValue.searchResident(search));
}
}
//How I populate the table data
public List<SearchNeedyResidentController> searchResident(String search){
List ll = new LinkedList();
try {
DBController db = new DBController();
db.getConnection();
String sql = "SELECT * FROM rm_needyresident WHERE name LIKE '" + search + "%'";
ResultSet rs = null;
// Call readRequest to get the result
rs = db.readRequest(sql);
while (rs.next()) {
String nric=rs.getString("nric");
String name = rs.getString("name");
double income = rs.getDouble("familyIncome");
String incomeStr = new DecimalFormat("##.00").format(income);
String phNo = rs.getString("phNo");
SearchNeedyResidentController row = new SearchNeedyResidentController();
row.setSearchNric(nric);
row.setSearchName(name);
row.setSearchIncome(incomeStr);
row.setSearchPhNo(phNo);
ll.add(row);
}
rs.close();
} catch (SQLException ex) {
ex.printStackTrace();
System.out.println("Error SQL!!!");
System.exit(0);
} catch (Exception e) {
e.printStackTrace();
}
return ll;
}
}
當點擊搜索按鈕時,會顯示錶格列。但是,即使有匹配的結果,它也只是顯示一張空白表格。我已經調試過了,我認爲這個錯誤發生在searchResident方法的檢索數據中。它不是從數據庫中獲取數據。有人知道什麼是錯的?
在此先感謝。
它可能有一些做DBController。你能確認它實際上是使用正確的模式連接到數據庫嗎?我只用過它一次,但我記得有關必須傳遞數據源名稱的一些信息。 –
但我所有的其他功能可以工作。它只是搜索沒有填充數據。它雖然沒有檢索數據 –