java - Struts 2 jquery sj :select and json result

Question

我正在使用 struts 2 jquery 插件选择组件。

行动是:

SampleAction {

       private List<SampleVO> samples; //With setters and getters
       private List<AnotherVO> anotherList; //With setters and getters
       private String anString; //With setters and getters

       @Action(value = "/loadSelect", results = {
       @Result(name = "success", type = "json")})
             public String loadSomeSamples() {
                samples = new ArrayList<SampleVO>();
                //Put some object in samples.
                return SUCCESS;
              }
    }

jsp是

<sj:select list="samples" />

问题是 json 插件将序列化操作中的所有属性(anotherList、anString 等...)，如下所示

{
  "samples": {
    "0": {"property":"a"},
    "1": {"property":"b"},
    "2": {"property":"c"}
  },
  "anString": "hello",  
  "anotherList": {
    "0": {"prop1":"a","prop2":"b"},
    "1": {"prop1":"c","prop2":"d"}
  }
}

如果我将 json root 参数更改为 samples，则 js:select 将不起作用，因为它在返回的 json 中找不到任何名为 samples 的列表。返回的json为:

{
    "0": {"property":"a"},
    "1": {"property":"b"},
    "2": {"property":"c"}
}

这个问题可以解决吗？有什么方法可以配置struts 2 json插件来生成

 {
  "samples": {
        "0": {"property":"a"},
        "1": {"property":"b"},
        "2": {"property":"c"}
      }
  }

或者为什么struts 2 jquery插件接受简单的json数组

Answer 1

您可以对 json 结果使用 includeProperties 参数。例如

@Result(type="json", params = {"includeProperties", "samples.*" })

再一个示例

@Result(type="json", params = {"root", "samples", "wrapPrefix", "{\"samples\":", "wrapSuffix", "}"})