method:'POST'无法正常工作.没有这样的配置选项.但是，有两种方法可以使商店使用POST.最简单的一个-只需覆盖getMethod函数:

method:'POST' in proxy's config won't work. There is no such config option. However there are two ways to make store use POST. The simplier one - just override getMethod function:

var content_type_store = new Ext.data.Store({
  proxy: {
    type: 'ajax',
    url: BASE_URL+'questions/content_pie',
    extraParams :{hi:''},
    // Here Magic comes
    getMethod: function(request){ return 'POST'; }

  },
  reader: {
    type: 'json',
    root: 'results'
  }
});

第二种方式:覆盖代理的actionMethods属性.如果您选择这种方式，则代理应如下所示:

The second way: override proxy's actionMethods property. If you choose this way your proxy should look like this:

  // ...
  proxy: {
    type: 'ajax',
    url: BASE_URL+'questions/content_pie',
    extraParams :{hi:''},
    // Here Magic comes
    actionMethods: {
      create : 'POST',
      read   : 'POST',
      update : 'POST',
      destroy: 'POST'
    }
  },
  // ...