社区!将intellij想法连接到sql server数据库
我目前正在使用真棒Intellij IDEA终极版学习Java。我试图连接到本地的SQL Server数据库,但我很难做到这一点。最初,我尝试使用内置的工具(我能够成功连接,但它看起来像是让我能够在它的Intellij控制台上运行SQL查询。更具体地说,我创建了一个基本的GUI客户可以在其中输入他们的个人信息,并且我希望将这些信息存储在Customers SQL表中。我也尝试使用JDBC,但出于某种原因,我得到错误“com.microsoft.sqlserver.jdbc.SQLServerDriver “我没有下载所需的驱动程序,并将它放在我的项目的lib文件夹中,但我不知道还有什么可以做的,我的猜测是我没有正确链接或将jar文件与驱动程序放在我的项目中。 Intellij文档对于SQL Tools来说是非常有限的,它只是基本的功能,如果有人能够在我的JDBC方法中指出我的错误,或者深入了解Intellij的SQL Tools,我会很感激。你先进的时间试图帮助这6个月老新手:) 这里是我的代码:
import java.sql.*;
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.*;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.GridPane;
import javafx.stage.Stage;
public class Main extends Application {
String name;
Stage window;
Scene scene;
Button submitButton = new Button("Submit");
Label fNameLabel = new Label("First Name:");
Label lNameLabel = new Label("Last Name:");
Label birthDateLabel = new Label("DOB:");
Label addressLabel = new Label("Address:");
Label emailLabel = new Label("E-mail:");
Label phoneLabel = new Label("Phone:");
TextField fNameTextField = new TextField();
TextField lNameTextField = new TextField();
TextField birthDateTextField = new TextField();
TextField addressTextField = new TextField();
TextField emailTextField = new TextField();
TextField phoneTextField = new TextField();
public static void main(String args[]) {
launch(args);
}
@Override
public void start(Stage primaryStage) throws Exception {
window = primaryStage;
window.setTitle("Customer Information");
window.setOnCloseRequest(e -> {
e.consume();
closeWindow();
});
//create GripPane scene
GridPane grid = new GridPane();
grid.setPadding(new Insets(10,10,10,10));
grid.setVgap(10);
grid.setHgap(10);
//set location of labels
GridPane.setConstraints(fNameLabel,3,0);
GridPane.setConstraints(lNameLabel,3,1);
GridPane.setConstraints(birthDateLabel,3,2);
GridPane.setConstraints(addressLabel,3,3);
GridPane.setConstraints(emailLabel,3,4);
GridPane.setConstraints(phoneLabel,3,5);
//set location of TextFields
GridPane.setConstraints(fNameTextField,4,0);
GridPane.setConstraints(lNameTextField,4,1);
GridPane.setConstraints(birthDateTextField,4,2);
GridPane.setConstraints(addressTextField,4,3);
GridPane.setConstraints(emailTextField,4,4);
GridPane.setConstraints(phoneTextField,4,5);
//set PromptText
birthDateTextField.setPromptText("mm/dd/yyyy");
emailTextField.setPromptText("[email protected]");
//set button location
GridPane.setConstraints(submitButton, 4, 6);
//add all elements to grid
grid.getChildren().addAll(fNameLabel,fNameTextField,lNameLabel,lNameTextField,
birthDateLabel,birthDateTextField,addressLabel,addressTextField,
emailLabel,emailTextField,phoneLabel,phoneTextField,submitButton);
scene = new Scene(grid, 400, 400);
window.setScene(scene);
window.show();
}
//properly exit out of app
private void closeWindow() {
boolean answer = ConfirmationBox.display("title", "Are you sure you want to exit?");
if (answer) {
window.close();
}
}
}
SQL类试图连接:关于选择的IntelliJ
import java.sql.*;
public class SQLMethods {
public static void main(String[] args) {
try {
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
String url = "jdbc:sqlserver://localhost\\SQLEXPRESS:1433;databaseName=CaiMaster";
Connection conn = DriverManager.getConnection(url);
Statement statement = conn.createStatement();
ResultSet resultSet;
resultSet = statement.executeQuery("SELECT Fname, Address FROM Customers WHERE Fname = 'Cai'");
String lastName = resultSet.getString("Fname");
String address = resultSet.getString("Address");
System.out.println(lastName);
System.out.println(address);
conn.close();
} catch (Exception e) {
System.err.println("Got an exception! ");
System.err.println(e.getMessage());
}
}
}
谢谢!这开始看起来更好。在项目依赖关系中添加jar文件有所帮助。在您的建议和其他人指出我缺少凭据后,它不会给我缺少的驱动程序错误,但是现在我收到错误“结果集没有当前行”。它的确如此。实际上它只有一行。有什么想法吗? –
是的,你不使用典型的习惯用法来使用ResultSet。看一下JDBC教程。你需要调用next()来移动光标。 – duffymo
先生你真棒,谢谢。出于某种原因,我虽然因为我只想要第一行,我不需要告诉光标移动。它现在像一种魅力。超级感谢! –