Question

protected void setup() {
     System.out.println("Hello Buyer Agent "+getAID().getName()+" is now ready....");
     String url = "jdbc:mysql://localhost/";
     String dbName = "testdb";
     String driver = "com.mysql.jdbc.Driver";
     String userName = "root";
     String password = "pass";

      try {
           Class.forName(driver).newInstance();
           Connection conn = DriverManager.getConnection(url+dbName,userName,password);
           Statement st = conn.createStatement();
           ResultSet res = st.executeQuery("SELECT * FROM  requested_electric_prods ORDER BY created DESC LIMIT 1");
           while (res.next()) {
                elec_pro_name = res.getString("search_string");
                elec_pro_requested_min_price  = res.getInt("price_min");
                elec_pro_requested_max_price = res.getInt("price_max");
                System.out.println("Customer requested, product: "+ elec_pro_name + " min price: "+ elec_pro_requested_min_price + " max price: " + elec_pro_requested_max_price);
           }

           conn.close();
       } catch (Exception e) {
           e.printStackTrace();
       }

这是我的设置方法。这很简单。但是当它试图连接到数据库时，它会产生classNotFoundException。

java.lang.ClassNotFoundException: com.mysql.jdbc.Driver

我有JDBC驱动程序并已将其添加到构建路径中。我正在使用Eclipe和EJADE插件。有谁知道它为什么会发生？在启动代理之前是否还需要进行其他配置？

Answer 1

主要问题是EJADE插件和Eclipse最新版本之间存在某种不兼容性：Juno。我改为Eclipse Indigo，一切正常！

JADE和JDBC MySQL连接给出了classnotfound异常

1 个答案: