Question

我的数据库不起作用，我收到错误，我在代码后粘贴了

    try {

        String url = "jdbc:derby:test";
        String name = "root";
        String password = "123";
        Connection con = DriverManager.getConnection(url, name, password);
        Statement state = con.createStatement();
        String query = "INSERT INTO APP.UNTITLED (id , name , password ) VALUES (1, 'Anas','123456789')";
        state.execute(query);

    }
    catch (SQLException e){
        e.printStackTrace();
    }
  }  
}

这是出现的错误：

java.sql.SQLException: No suitable driver found for jdbc:derby:test
    at java.sql.DriverManager.getConnection(DriverManager.java:689)
    at java.sql.DriverManager.getConnection(DriverManager.java:247)
    at testdatabase.TestDatabase.main(TestDatabase.java:25)
BUILD SUCCESSFUL (total time: 0 seconds)

Answer 1

您必须使用Class.forName查找类路径才能找到合适的驱动程序。

try {
 ...
 Class.forName("org.apache.derby.jdbc.EmbeddedDriver").newInstance(); 
 Connection con = DriverManager.getConnection(url, name, password);
 Statement state = con.createStatement();
 ...
 }    

 catch (....

不要忘记将库添加到项目中

java DB驱动程序

以下jar文件。

<强>的derby.jar
derbyclient.jar中
derbynet.jar

数据库不适用于netbeans

1 个答案: