通过JSON从Handsontable检索数据到Struts2 Action无法正常工作

Rom*_*man 8 ajax jquery struts2 handsontable struts2-json-plugin

我使用struts2-json插件生成JSON数据和Ajax,用来自该JSON的数据(根据源)填充表(handsontable ).

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handontable部分,该函数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');
            }
        }
    });
Run Code Online (Sandbox Code Playgroud)

该函数handsontable.getData()实际上检索了我检查的所有数据,但是List<Report> data在我的JSONSaveAction操作中数据没有绑定到java对象.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: 在此输入图像描述

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", true, "2013-05-03", "black"));
        data.add(new Report(4, "Zack", false, "2013-01-01", "yellow"));
    }

    public String execute() {
        return SUCCESS;
    }

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

    public void setData(List<Report> data) {
        this.data = data;
    }
}
Run Code Online (Sandbox Code Playgroud)

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"},
    {"active":false,"color":"yellow","date":"2013-01-01","id":4,"name":"Zack"}]
}
Run Code Online (Sandbox Code Playgroud)

操作通过JSON从表中检索数据(不工作):

这里的字段List<Report> data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;
    }
}
Run Code Online (Sandbox Code Playgroud)

报告类:

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

    //getters and setters
}
Run Code Online (Sandbox Code Playgroud)

通过JSON在表中加载和保存数据:

<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", type: 'text'},
            {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",
            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');
                }
            },
            error: function () {
                $console.text('Save error.');
            }
        });
    });
</script>
Run Code Online (Sandbox Code Playgroud)

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!

Rom*_*man 3

我已经修好了。

1:在struts.xml中添加:

<interceptor-ref name="json">
    <param name="enableSMD">true</param>
</interceptor-ref>
Run Code Online (Sandbox Code Playgroud)

2:在Ajax请求中添加:

contentType: 'application/json'
Run Code Online (Sandbox Code Playgroud)

3:更改由handontable自动格式化的JSON格式。JSON 中有一些字符,例如: %5B %5D %7B %7D %22 而不是: [ ] { } "

我已用自己的fixedEncodeURI() 函数替换了它们:

var data = '{"data":' + fixedEncodeURI(JSON.stringify(handsontable.getData())) + '}';
$.ajax({
    url: "../json/saveJSONDataAction.action",
    data: data, //returns all cells' data
    dataType: 'json',
    contentType: 'application/json',
    type: 'POST',
    success: function (res) {
    }
  });

function fixedEncodeURI (str) {
    return encodeURI(str).replace(/%5B/g, '[').replace(/%5D/g, ']').replace(/%7B/g, '{').replace(/%7D/g, '}').replace(/%22/g, '"');
}
Run Code Online (Sandbox Code Playgroud)