使用 Java 连接数据库值并添加到数组

Question

这是我在 netbeans 中的 web 服务 java 项目的一部分。我不知道如何从我的数据库中检索 two 值（描述 + culture - 这些是 columns), add 它们都到 array，然后检索它们两者。我知道如何在仅检索 one 值时执行此操作。

   public String countries(@WebParam(name = "name") String name) {
            //TODO write your implementation code here
            try {
                String url = "jdbc:odbc:" + "worldcup"; 
                Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

                Connection con = DriverManager.getConnection(url,"","");

                // Gets a statement
                Statement state1 = con.createStatement();
                //Statement state2 = con.createStatement();

                String query1 = "SELECT description,culture FROM Countries WHERE name = '" + name + "'";
                // selects the description for the selected group ( group will be referenced to the chosen group)
                ResultSet results = state1.executeQuery(query1);
                int i = 0;

                Arrays.fill(names, "");
                while (results.next()) {
                    String nam = results.getString("description"); // <---- this is the part i need help from
                    names[i++] = nam;
                }   

                return Arrays.toString(names);

            } catch (SQLException e){

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

            }
            return null;

Answer 1

您可以通过列名或列索引访问该值。

按列名访问。

names[i++] = results.getString("description");

names[i++] = results.getString("culture");

按列索引访问。

names[i++] = results.getString(1);

names[i++] = results.getString(2);

使用 Java 连接数据库值并添加到数组

Joining database values and add to an array using Java

java

database

arrays

resultset