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');
}
}
});
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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:

@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;
}
}
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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"}]
}
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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;
}
}
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报告类:
public class Report {
private int id;
private String name;
private boolean active;
private String date;
private String color;
//getters and setters
}
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<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>
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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!
我已经修好了。
1:在struts.xml中添加:
<interceptor-ref name="json">
<param name="enableSMD">true</param>
</interceptor-ref>
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2:在Ajax请求中添加:
contentType: 'application/json'
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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, '"');
}
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