Struts2 jQuery网格数据未加载 [英] Struts2 jQuery grid data not loading
本文介绍了Struts2 jQuery网格数据未加载的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我是JQgrid和Struts2的初学者.
I'm a beginner with JQgrid with Struts2.
我尝试过使用此代码，但是网格中没有记录，但是所有记录都在运行.
I had try with this code but I will got no records in grid, but I got all record in action.
<%@ taglib prefix="s" uri="/struts-tags"%>
<%@ taglib prefix="sj" uri="/struts-jquery-tags"%>
<%@ taglib prefix="sjg" uri="/struts-jquery-grid-tags"%>
......
.......
<s:url id="remoteurl" action="jsontable"/>
<sjg:grid
id="gridtable"
caption="Application Data"
dataType="json"
href="%{remoteurl}"
pager="true"
gridModel="gridModel"
rowList="10,15,20"
rowNum="15"
rownumbers="true"
>
<sjg:gridColumn name="state" index="state" title="State" sortable="true"/>
<sjg:gridColumn name="city" index="city" title="City" sortable="false"/>
<sjg:gridColumn name="district" index="district" title="District" sortable="false"/>
</sjg:grid>
testAction.java
package com.sttl.rpsc.action;
import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
import com.sttl.rpsc.action.base.BaseAction;
import com.sttl.rpsc.dataobject.Application;
import com.sttl.rpsc.util.HibernateUtil;
public class testAction extends BaseAction {
private List<Application> gridModel;
private List<Application> myCustomers;
private Integer rows = 0;
private Integer page = 0;
private Integer total = 0;
private Integer record = 0;
private String sord;
private String sidx;
private String searchField;
private String searchString;
private String searchOper;
private boolean loadonce = false;
public List<Application> getGridModel() {
return gridModel;
}
public void setGridModel(List<Application> gridModel) {
this.gridModel = gridModel;
}
public List<Application> getMyCustomers() {
return myCustomers;
}
public void setMyCustomers(List<Application> myCustomers) {
this.myCustomers = myCustomers;
}
public Integer getRows() {
return rows;
}
public void setRows(Integer rows) {
this.rows = rows;
}
public Integer getPage() {
return page;
}
public void setPage(Integer page) {
this.page = page;
}
public Integer getTotal() {
return total;
}
public void setTotal(Integer total) {
this.total = total;
}
public Integer getRecord() {
return record;
}
public void setRecord(Integer record) {
this.record = record;
}
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 boolean isLoadonce() {
return loadonce;
}
public void setLoadonce(boolean loadonce) {
this.loadonce = loadonce;
}
public String getJSON()
{
return getAllApplicationData();
}
public String getAllApplicationData(){
String result = SUCCESS;
Query q = null;
try{
Session session = HibernateUtil.getSessionFactory().getCurrentSession();
session.beginTransaction();
q = session.createQuery("from Application");
this.setGridModel(q.list());
if(this.getGridModel()!=null)
System.out.println("gridModel.Size() : "+this.getGridModel().size());
else
System.out.println("gridModel null");
int to = (rows * page);
int from = to - rows;
//Count Rows (select count(*) from custumer)
record = gridModel.size();
System.out.println("record : "+record);
//Your logic to search and select the required data.
//gridModel = CustumerDAO.find(from, to);
//calculate the total pages for the query
total =(int) Math.ceil((double)record / (double)rows);
System.out.println("total : "+total);
}catch(Exception e){
e.printStackTrace();
}
return result;
}
}
struts.xml
<package name="default" extends="struts-default,json-default" namespace="/">
..........
...........
<action name="jsontable" class="com.sttl.rpsc.action.testAction" method="getJSON">
<interceptor-ref name="basicStack" />
<result name="success" type="tiles">/testgrid.tiles</result>
<result name="error" type="redirect">/testgrid.tiles</result>
<result name="cancel" type="redirect">/testgrid.tiles</result>
</action>
tiles.xml
<definition name="/testgrid.tiles" extends="baseLayoutNew">
<put-attribute name="title" value="Test Grid" />
<put-attribute name="body" value="/jsp/examination/testGrid.jsp" />
</definition>
在这里，我得到了列表大小:183，当我在操作文件中进行迭代时，我得到了所有记录，但无法进入网格.我应该怎么办?没有错误显示在那里.
Here I got list size: 183 and when I iterate in action file I got all records but I can't get in grid. What should I do? There's no error showing there.
推荐答案
在您的网格中，您希望重新调整JSON.因此，在操作映射中，您必须将结果类型更改为json:
In your grid you expect JSON to be retuned. So in you action mapping you have to change the result type to json as:
<action name="jsontable" class="com.sttl.rpsc.action.testAction" method="getJSON">
<result name="success" type="json"/>
</action>
json结果类型通过 Struts2 JSON插件.确保插件在您的类路径中，并且您的包正在扩展json-default.通过将json指定为结果类型，您可以将操作序列化为JSON，使其可用于javascript代码(在您的情况下为网格)读取数据.
json result type is added to your result types by Struts2 JSON plugin. make sure the plugin is in your classpath and your package is extending json-default. By specifying json as your result type you're serializing your action as a JSON making it available for the javascript code (in your case the grid) to read the data.
这篇关于Struts2 jQuery网格数据未加载的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
