我有一个由struts2-jquery-grid-3.7.0插件提供的网格，如下所示。
<s:url id="remoteurl" action="ProductGrid" namespace="/admin_side"/>
<s:url id="editurl" action="ProductCRUD"/>
<sjg:grid
id="gridmultitable"
caption="Product"
dataType="json"
href="%{remoteurl}"
pager="true"
navigator="true"
navigatorSearchOptions="{sopt:['eq','ne','lt','gt']}"
navigatorEdit="false"
navigatorView="false"
navigatorAddOptions="{height:280, width:500, reloadAfterSubmit:true}"
navigatorEditOptions="{height:280, width:500, reloadAfterSubmit:false}"
navigatorViewOptions="{height:280, width:500}"
navigatorDelete="true"
navigatorDeleteOptions="{height:280, width:500,reloadAfterSubmit:true}"
gridModel="gridModel"
rowList="5,10,15"
rowNum="5"
rownumbers="true"
editurl="%{editurl}"
editinline="true"
multiselect="true"
onSelectRowTopics="rowselect"
onEditInlineSuccessTopics="oneditsuccess"
viewrecords="true"
shrinkToFit="false"
width="1045"
>
<sjg:gridColumn name="prodId" index="prodId" title="Id" key="true" frozen="true" width="200" formatter="integer" editable="false" dataType="Long" sortable="true" search="true" sorttype="integer" searchoptions="{sopt:['eq','ne','lt','gt']}"/>
<sjg:gridColumn name="prodName" index="prodName" title="Product Name" width="200" editable="true" sortable="true" search="true" sorttype="text"/>
<sjg:gridColumn name="prodCode" index="prodCode" title="Product Code" width="200" sortable="true" search="true" editable="true" sorttype="text"/>
<!--Start nested properties-->
<sjg:gridColumn name="subCategory.category.catName" index="subCategory.category.catName" title="Category" width="200" sortable="true" search="true" editable="true" sorttype="text"/>
<sjg:gridColumn name="subCategory.subCatName" index="subCategory.subCatName" title="SubCategory" width="200" sortable="true" search="true" editable="true" sorttype="text"/>
<sjg:gridColumn name="brand.brandName" index="brand.brandName" title="Brand" width="200" sortable="true" search="true" editable="true" sorttype="text"/>
<sjg:gridColumn name="fabric.fabricName" index="fabric.fabricName" title="Fabric" width="200" sortable="true" search="true" editable="true" sorttype="text"/>
<!--End nested properties-->
<sjg:gridColumn name="marketPrice" index="marketPrice" title="Market Price" width="200" sortable="true" search="true" editable="true" sorttype="text"/>
<sjg:gridColumn name="salePrice" index="salePrice" title="Sale Price" width="200" sortable="true" search="true" editable="true" sorttype="text"/>
<sjg:gridColumn name="featured" index="featured" title="Featured" width="200" sortable="true" search="true" editable="true" sorttype="text"/>
<sjg:gridColumn name="expressDelivery" index="expressDelivery" title="Express Delivery" width="200" sortable="true" search="true" editable="true" sorttype="text"/>
<sjg:gridColumn name="weight" index="weight" title="Weight" width="200" sortable="true" search="true" editable="true" sorttype="text"/>
<sjg:gridColumn name="quantity" index="quantity" title="Quantity" width="200" sortable="true" search="true" editable="true" sorttype="text"/>
<sjg:gridColumn name="visible" index="visible" title="Visible" width="200" sortable="true" search="true" editable="true" sorttype="text"/>
<sjg:gridColumn name="latest" index="latest" title="Latest" width="200" sortable="true" search="true" editable="true" sorttype="text"/>
<sjg:gridColumn name="prodDesc" index="prodDesc" title="Description" width="200" sortable="true" search="true" editable="true" sorttype="text"/>
</sjg:grid>
可以看出，在几列中有一些嵌套的属性。它们未在给定的网格中列出（显示）。相关的列只是留空。其余字段照常显示。
我也尝试将它们封闭在其中，%{...}但无济于事。
如何在网格中显示这样的嵌套属性？他们有什么特殊待遇吗？
已验证这些嵌套属性是从数据库中获取的，并且模型已正确初始化。
编辑：
动作类：
@Namespace("/admin_side")
@ResultPath("/WEB-INF/content")
@ParentPackage(value="json-default")
@InterceptorRefs({@InterceptorRef(value="store", params={"operationMode", "AUTOMATIC"})})
public final class ProductAction extends ActionSupport implements Serializable, ModelDriven<Product>
{
@Autowired
private final transient ProductService productService=null;
private static final long serialVersionUID = 1L;
private Product entity=new Product();
private List<Product>gridModel=new ArrayList<Product>();
private String id;
// Get how many rows we want to have into the grid - rowNum attribute in the grid
private Integer rows=5;
// Get the requested page. By default grid sets this to 1.
private Long page=1L;
// sorting order - asc or desc
private String sord;
// get index row - i.e. user click to sord.
private String sidx;
// Search Field
private String searchField;
// The Search String
private String searchString;
// The Search Operation ['eq','ne','lt','le','gt','ge','bw','bn','in','ni','ew','en','cn','nc']
private String searchOper;
// Your Total Pages
private Long total;
// All Records
private Long records;
private String oper;
@Override
public Product getModel() {
return entity;
}
@Action(value = "ProductCRUD",
results = {
@Result(name = ActionSupport.SUCCESS, location = "Product.jsp"),
@Result(name = ActionSupport.INPUT, location = "Product.jsp")},
interceptorRefs = {
@InterceptorRef(value = "defaultStack", params = {"validation.validateAnnotatedMethodOnly", "true", "validation.excludeMethods", "load"})})
public String edit() throws Exception {
if(oper.equalsIgnoreCase("add")) {
// Add a row.
}
else if(oper.equalsIgnoreCase("edit")) {
// Update a row.
}
else if(oper.equalsIgnoreCase("del")) {
// Delete a row.
}
return ActionSupport.SUCCESS;
}
@Action(value = "ProductGrid",
results = {
@Result(name = ActionSupport.SUCCESS, type = "json", params = {"includeProperties", "gridModel\\[\\d+\\]\\.prodId, gridModel\\[\\d+\\]\\.prodName, gridModel\\[\\d+\\]\\.prodCode, gridModel\\[\\d+\\]\\.prodDesc, gridModel\\[\\d+\\]\\.marketPrice, gridModel\\[\\d+\\]\\.salePrice, gridModel\\[\\d+\\]\\.featured, gridModel\\[\\d+\\]\\.expressDelivery, gridModel\\[\\d+\\]\\.weight, gridModel\\[\\d+\\]\\.occassion, gridModel\\[\\d+\\]\\.quantity, gridModel\\[\\d+\\]\\.visible, gridModel\\[\\d+\\]\\.latest, gridModel\\[\\d+\\]\\.subCategory, gridModel\\[\\d+\\]\\.fabric, gridModel\\[\\d+\\]\\.brand, gridModel\\[\\d+\\]\\.subCategory\\[\\d+\\]\\.category, total, records, rows, page, sord, sidx, searchField, searchString, searchOper", "excludeNullProperties", "true"})},
interceptorRefs = {
@InterceptorRef("params")})
public String executeAction() {
records=productService.rowCount().longValue();
total=new BigDecimal(records).divide(new BigDecimal(rows), 0, BigDecimal.ROUND_CEILING).longValue();
gridModel=productService.getList((int)(page-1)*rows, rows, new HashMap<String, String>(){{put(sidx, sord);}}, null);
return SUCCESS;
}
public String getJSON() {
return executeAction();
}
public List<Product> getGridModel() {
return gridModel;
}
public void setGridModel(List<Product> gridModel) {
this.gridModel = gridModel;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public Integer getRows() {
return rows;
}
public void setRows(Integer rows) {
this.rows = rows;
}
public Long getPage() {
return page;
}
public void setPage(Long page) {
this.page = page;
}
public String getSord() {
return sord;
}
public void setSord(String sord) {
this.sord = sord;
}
public String getSidx() {
return sidx;
}
public void setSidx(String sidx) {
this.sidx = sidx;
}
public String getSearchField() {
return searchField;
}
public void setSearchField(String searchField) {
this.searchField = searchField;
}
public String getSearchString() {
return searchString;
}
public void setSearchString(String searchString) {
this.searchString = searchString;
}
public String getSearchOper() {
return searchOper;
}
public void setSearchOper(String searchOper) {
this.searchOper = searchOper;
}
public Long getTotal() {
return total;
}
public void setTotal(Long total) {
this.total = total;
}
public Long getRecords() {
return records;
}
public void setRecords(Long records) {
this.records = records;
}
public String getOper() {
return oper;
}
public void setOper(String oper) {
this.oper = oper;
}
@Action(value = "Product",
results = {
@Result(name=ActionSupport.SUCCESS, location="Product.jsp"),
@Result(name = ActionSupport.INPUT, location = "Product.jsp")},
interceptorRefs={
@InterceptorRef(value = "defaultStack", params = {"validation.validateAnnotatedMethodOnly", "true", "validation.excludeMethods", "load"})})
public String load() throws Exception {
// This method is only needed to return an initial view on page load. Nothing to see here. Leave it empty.
return ActionSupport.SUCCESS;
}
}
作为回应，那些所有嵌套的属性都是空的。单行的 JSON 响应如下。
{
"gridModel": [
{
"brand": {
},
"expressDelivery": false,
"fabric": {
},
"featured": true,
"latest": false,
"marketPrice": 12.00,
"occassion": "222",
"prodCode": "aaa",
"prodDesc": "xxx",
"prodId": 5,
"prodName": "ddd",
"quantity": 1,
"salePrice": 12.00,
"subCategory": {
},
"visible": true,
"weight": 22.00
}
],
"page": 1,
"records": 5,
"rows": 5,
"sidx": "",
"sord": "asc",
"total": 1
}