将intellij idea连接到sql server数据库
Posted
技术标签:
【中文标题】将intellij idea连接到sql server数据库【英文标题】：connect intellij idea to sql server database 【发布时间】：2016-05-31 03:29:49 【问题描述】：社区！
我目前正在使用出色的 Intellij IDEA Ultimate 版本学习 Java。我正在尝试连接到本地 SQL Server 数据库，但我很难这样做。最初，我尝试使用内置工具（我能够成功连接，但似乎所做的只是让我能够在 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，我希望将该信息存储在客户 SQL 表中。我也尝试使用 JDBC，但由于某种原因，我收到错误“com.microsoft.sqlserver.jdbc.SQLServerDriver “。我确实下载了所需的驱动程序，并将其放在我项目的 lib 文件夹中，但我不知道还能做什么。我的猜测是我没有正确链接或将 jar 文件与我的项目中的驱动程序一起放置。JetBrain 的Intellij 文档在 SQL 工具方面非常有限。它只涉及基本功能。如果有人可以查明我在 JDBC 方法上的错误，或者可能更深入地了解 Intellij 的 SQL 工具，我将不胜感激。谢谢你在这 6 个月中尝试帮助的时间提前了老新手：） 这是我的代码：
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("example@example.com");
//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();
尝试连接的 SQL 类：
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());
【问题讨论】：
【参考方案1】：将 /lib 目录添加到项目下的依赖项中，您将获得更大的成功。
我认为您的网址不正确。一旦你对 /lib 目录进行了排序，就可以这样尝试：
String url = "jdbc:sqlserver://localhost:1433;databaseName=CaiMaster";
试试这个，看看效果是否更好：
/**
* SQL utility methods
* User: MDUFFY
* Date: 5/31/2016
* Time: 4:41 PM
* @link http://***.com/questions/37536372/connect-intellij-idea-to-sql-server-database/37536406?noredirect=1#comment62595302_37536406
*/
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class SQLMethods
public static final String DEFAULT_DRIVER_CLASS = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
public static final String DEFAULT_URL = "jdbc:sqlserver://localhost:1433;databaseName=CaiMaster";
private static final String DEFAULT_USERNAME = "";
private static final String DEFAULT_PASSWORD = "";
public static final String FIND_ALL_CUSTOMERS_QUERY = "SELECT Fname, Address FROM Customers ";
private static final String BY_FIRST_NAME = "WHERE FNAME = ? ";
public static void main(String[] args)
Connection connection = null;
try
connection = SQLMethods.getConnection(DEFAULT_DRIVER_CLASS, DEFAULT_URL, DEFAULT_USERNAME, DEFAULT_PASSWORD);
Customer customer = SQLMethods.findCustomer(connection, "Cai");
System.out.println(customer);
catch (Exception e)
e.printStackTrace();
finally
SQLMethods.close(connection);
public static Connection getConnection(String driverClass, String url, String username, String password) throws SQLException, ClassNotFoundException
Class.forName(driverClass);
return DriverManager.getConnection(url, username, password);
public static void close(Connection connection)
try
if (connection != null)
connection.close();
catch (SQLException e)
e.printStackTrace();
public static void close(Statement statement)
try
if (statement != null)
statement.close();
catch (SQLException e)
e.printStackTrace();
public static void close(ResultSet resultSet)
try
if (resultSet != null)
resultSet.close();
catch (SQLException e)
e.printStackTrace();
public static Customer findCustomer(Connection connection, String name)
Customer customer = null;
PreparedStatement ps = null;
ResultSet rs = null;
try
ps = connection.prepareStatement(FIND_ALL_CUSTOMERS_QUERY + BY_FIRST_NAME);
ps.setString(1, name);
rs = ps.executeQuery();
while (rs.next())
String firstName = rs.getString("Fname");
String address = rs.getString("Address");
customer = new Customer(address, firstName);
catch (SQLException e)
e.printStackTrace();
finally
SQLMethods.close(rs);
SQLMethods.close(ps);
return customer;
class Customer
private final String firstName;
private final String address;
public Customer(String address, String firstName)
this.address = address;
this.firstName = firstName;
public String getFirstName()
return firstName;
public String getAddress()
return address;
@Override
public String toString()
final StringBuilder sb = new StringBuilder("Customer");
sb.append("firstName='").append(firstName).append('\'');
sb.append(", address='").append(address).append('\'');
sb.append('');
return sb.toString();
【讨论】：
谢谢！这开始看起来更好了。在项目依赖项中添加 jar 文件会有所帮助。在您的建议和其他人指出我缺少凭据之后，它并没有给我缺少驱动程序错误，但是现在我收到错误“结果集没有当前行”。确实如此。实际上它只有一排。有什么想法吗？ 是的，您没有使用典型的习惯用法来使用 ResultSet。查看 JDBC 教程。你需要调用 next() 来推进光标。 你先生太棒了，谢谢。出于某种原因，因为我只想要第一行，所以我不需要告诉光标移动。它现在就像一个魅力。超级感谢！！【参考方案2】：正如@duffymo 所说，我也不确定您的网址是否正确。另外，您在getConnection(url) 方法中遗漏了您的用户名和密码。应该是这样的：
String url = "jdbc:sqlserver://localhost\\SQLEXPRESS:1433;databaseName=CaiMaster";
String username = "user";
String password = "pass";
Connection conn = DriverManager.getConnection(url,username,password);
Statement st = conn.createStatement();
希望这会有所帮助。告诉我。
【讨论】：
谢谢，是的，它有点帮助。有了@duffymo 的建议加上你的建议，我相信我已经连接了，但是当它正好有一行时，我仍然收到错误“结果集没有当前行”。我正在选择的那个。有什么想法吗？以上是关于将intellij idea连接到sql server数据库的主要内容，如果未能解决你的问题，请参考以下文章
无法使用 IntelliJ/Rider 连接到 Microsoft SQL Server
将 IntelliJ 连接到 Amazon Redshift