小编bko*_*yyk的帖子

我试图配置没有persisten.xml文件的LocalContainerEntityManagerFactoryBean.

这是我的dataSource - 它适用于Hibernate SessionFactory - 所以,没关系.

<bean id="dataSource"
    class="org.apache.commons.dbcp2.BasicDataSource" destroy-method="close">
    <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
    <property name="url" value="jdbc:mysql://localhost:3306/test"/>
    <property name="username" value="root"/>
    <property name="password" value="root"/>
</bean>

这是我的LocalContainerEntityManagerFactoryBean

   <bean id="myEmf" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
   <property name="dataSource" ref="dataSource" />
   <property name="packagesToScan" value="application.models" />
   <property name="jpaVendorAdapter">
      <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
   </property>
   <property name="jpaProperties">
      <props>
         <prop key="hibernate.hbm2ddl.auto">create-drop</prop>
         <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
      </props>
   </property>
</bean>

我得到的一个例外:

...Could not instantiate bean class [org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter]: Constructor threw exception; nested exception is java.lang.IllegalStateException: Failed to determine Hibernate PersistenceProvider

我阅读文档,我知道LocalContainerEntityManagerFactoryBean有这样的属性,类似的创建LocalContainerEntityManagerFactoryBean的风格在Spring in Action 3和这里工作:http://softwarecave.org/2014/03/15/using-jpa-and-jta-与弹簧/

也许你知道我做错了什么,或者至少春天想通过这个例外告诉我什么？

在此先感谢,干杯:) …

我在ListFragment中实现了OnScrollListener接口,我希望在列表的最后一个元素可见时更改文本,但它不起作用.我没有找到类似问题的例子(ListFragment中的OnScrollListener).我的例子:

public class MyListFragment1 extends ListFragment implements OnScrollListener {
  public View view;

public class MyListAdapter extends ArrayAdapter<String> {
    Context myContext;
    List<String> lista;
    public MyListAdapter(Context context, int textViewResourceId,
            List<String> objects) {
        super(context, textViewResourceId, objects);
        myContext = context;
        lista = objects;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        //return super.getView(position, convertView, parent);

        LayoutInflater inflater = 
                (LayoutInflater)myContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View row=inflater.inflate(R.layout.row, parent, false);
        TextView label=(TextView)row.findViewById(R.id.month);
        label.setText(lista.get(position));
        ImageView icon=(ImageView)row.findViewById(R.id.icon);

        //Customize your icon here
        icon.setImageResource(R.drawable.ic_launcher);

        return row;
    }



}



@Override
public void onCreate(Bundle …

嗨,我正在尝试使用康康,但我有非常恼人的错误,即:未初始化的恒定版

对于控制器:

class EditionsController < ApplicationController
  before_filter :authenticate_user! #devise
  load_and_authorize_resource
  def index
  end
end

这条路线:

get "editions/index"

和这样的能力:

user ||= User.new # guest user (not logged in)
if user.has_role? "admin"
  can :manage, Edition
  cannot :commission
else
  can :read, :commission
end

还有一个问题,我如何为奇异(名称)控制器创建cancan能力？例如PhotoController