现在,我需要使用JSON的Ajax从表中检索数据到Struts2 Action.
首先,我已经使用JSON从Struts2 Action传递给Handsontable的数据实现了填充表,这非常简单且有效.但为什么保存不起作用,你可以在下面的附加代码中看到？

正如我在firebug中看到的那样发送了POST,并且在调试中,我的JSONSaveAction操作中检索到了请求,但是字段数据没有填充JSON数据,为什么？不应该通过struts2-json插件自动将数据绑定到java对象？我究竟做错了什么？

在handsontable部分,函数handsontable.getData()负责从表中获取整个数据.所以我这样使用它但没有成功：

$.ajax({
        url: "../json/saveJSONDataAction.action",data: {data: handsontable.getData()},//returns all cells' data
        dataType: 'json',type: 'POST',success: function (res) {
            if (res.result === 'ok') {
                $console.text('Data saved');
            }
            else {
                $console.text('Save error');
            }
        }
    });

函数handsontable.getData()实际上检索了我检查的所有数据但是没有将数据绑定到java对象List< Report>我的JSONSaveAction操作中的数据.你知道为什么吗？

这是POST请求后我的表和firebug信息的屏幕截图：

将JSON发送到handontable的动作(正常工作)：

@ParentPackage("json-default")
@Action(value="getJSONDataAction")
@Result(name="success",type="json")
public class JSONDataAction extends ActionSupport {
    private static final long serialVersionUID = 1L;

    private List<Report> data = new ArrayList<Report>();

    public JSONDataAction(){
        data.add(new Report(1,"Chris",true,"2008-01-01","orange"));
        data.add(new Report(2,"Kate",false,"2013-03-03","blue"));
        data.add(new Report(3,"Blade","2013-05-03","black"));
        data.add(new Report(4,"Zack","2013-01-01","yellow"));
    }

    public String execute() {
        return SUCCESS;
    }

    public List<Report> getData() {
        return data;
    }

    public void setData(List<Report> data) {
        this.data = data;
    }
}

发送到自动生成的填充表的JSON：

{"data":[
    {"active":true,"color":"orange","date":"2008-01-01","id":1,"name":"Chris"},{"active":false,"color":"blue","date":"2013-03-03","id":2,"name":"Kate"},{"active":true,"color":"black","date":"2013-05-03","id":3,"name":"Blade"},"color":"yellow","date":"2013-01-01","id":4,"name":"Zack"}]
}

动作通过JSON从表中检索数据(不工作)：

这里是字段List< Report>数据始终为null,未填充来自JSON的数据:(

@ParentPackage("json-default")
@Action(value="saveJSONDataAction")
@Result(name="success",type="json")
public class JSONSaveAction extends ActionSupport {
    private static final long serialVersionUID = 1L;

    private List<Report> data;

    public JSONSaveAction(){
    }

    public String execute() {
        try {
            JSONObject jsonData = (JSONObject) JSONSerializer.toJSON(data);
            String name = jsonData.getString("name");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return SUCCESS;
    }

    public List<Report> getData() {
        return data;
    }

    public void setData(List<Report> data) {
        this.data = data;
    }
}

报告类：

public class Report {
    private int id;
    private String name;
    private boolean active;
    private String date;
    private String color;

    //getters and setters
}

负载&通过JSON将数据保存到表中和从表中保存：

<div id="spreadsheet">
    <p>
        <button type="button" name="load">Load</button>
        <button type="button" name="save">Save</button>
    </p>
</div>
<div id="console" class="console"></div>

<script>
    var $container = $("#spreadsheet");
    var $console = $("#console");
    var $parent = $container.parent();
    $container.handsontable({
        startRows: 4,startCols: 20,rowHeaders: true,colHeaders: true,contextMenu: true,columns: [
            {data: "id",type: 'text'},{data: "name",{data: "active",type: 'checkBox'},{data: "date",type: 'date'},{data: "color",type: 'autocomplete',source: ["yellow","red","orange","green","blue","gray","black","white"]
            }
        ]
    });
    var handsontable = $container.data('handsontable');

    $parent.find('button[name=load]').click(function () {
        $.ajax({
            url: "../json/getJSONDataAction.action",dataType: 'json',type: 'GET',success: function (res) {
                handsontable.loadData(res.data);
                $console.text('Data loaded');
            }
        });
    });

    $parent.find('button[name=save]').click(function () {     
        $.ajax({
            url: "../json/saveJSONDataAction.action",//returns all cells' data
            dataType: 'json',success: function (res) {
                if (res.result === 'ok') {
                    $console.text('Data saved');
                }
                else {
                    $console.text('Save error');
                }
            },error: function () {
                $console.text('Save error.');
            }
        });
    });
</script>

请帮我如何正确地从表中检索数据到java对象,因为它确实阻止了我.我不知道我做错了什么……

非常感谢任何输入！