Question

java中的类conextion：

     try {

             Class.forName("org.postgresql.Driver");
             Properties props = new Properties();
             props.setProperty("user","postgres");
             props.setProperty("password","postgres");
             Connection conn = DriverManager.getConnection(url, props);
             String stsql = "SELECT * From mercarderia";
             Statement st = conn.createStatement();
             ResultSet rs = st.executeQuery(stsql);

             while (rs.next()) {
                       String c = rs.getString("nombre");
                       System.out.println(c);

             }
             conn.close();
             } catch (SQLException se) {
             System.out.println("oops! No se puede conectar. Error: " + se.toString()+se.getErrorCode());
             msj.setText("oops! No se puede conectar. Error: " + se.toString() + "||" +se.getErrorCode());
             } catch (ClassNotFoundException e) {
                 System.out.println("oops! No se encuentra la clase. Error: " + e.getMessage() +" "+ e.getException());
             msj.setText("oops! No se encuentra la clase. Error: " + e.getMessage());
             }
}

我明白了：

Error: java.lang.NoClassDefFoundError: org.postgresql.Driver

请帮忙...... postgresql版本9.3
* JDK 1.8
Eclipse和SDK oficial *

现在我收到以下错误消息：java.lang.VerifyError: org.postgresql.Driver 并且驱动程序位于“libs”文件夹

Answer 1

您应该检查您的postgres驱动程序库是否在您的构建路径中，如果是，还要在应用程序中启用它的导出。这是JDBC postgresql driver not found in android project

的副本

错误：Android中的org.postgresql.Driver

1 个答案: