< SJ：选择>没有调用动作 [英] <sj:select> not calling action

问题描述

我觉得这是一个非常简单的修复，但我很失望。我一整天都在搜索，但我的代码似乎与工作示例相匹配。
我正在使用Struts + SpringMVC + Hibernate，我正在用jQuery标签替换所有的dojo标签。 jQuery下拉菜单不会调用相关联的操作。

以下是相关代码：

Struts .xml

 < action name =getListOfCitiesclass =cityActions> 
< result type =json> 
< param name =root> cities< / param> 
< / result> 
< / action> 
  

Page.jsp

 < s：url id =cityListaction =getListOfCities/> 
< sj：autocompleter name =citieshref =％{cityList}list =citiesselectBox =true/> 
  

CityAction.java

  public class CityActions实现ModelDriven< CityVO> {
 
 CityService cityService; 
 private Map< String，String> cities = new HashMap< String，String>（）; 
 CityVO city = new CityVO（）; 
 
 public void setCityService（CityService cityService）{
 this.cityService = cityService; 
} 
 
 public CityVO getModel（）{
 return city; 
} 
 
 public String execute（）{
 return Action.SUCCESS; 
} 
 
 public String addCity（）{
 try {
 cityService.addCity（city）; 
 returnSUCCESS;} 
 catch（异常e）{
 returnERROR; 
} catch（Throwable t）{
 returnERROR; 
} 
} 
 
 public Map< String，String> getCities（）{
列表< CityVO> cityList = cityService.listCities（）; 
 
迭代器< CityVO> iterator = cityList.iterator（）; 
 while（iterator.hasNext（））{
 CityVO fac = iterator.next（）; 
 cities.put（fac.getCityName（），Integer.toString（fac.getCityId（）））; 
} 
返回城市; 
} 
  

下拉菜单显示但未填充。这是我之前工作正常的：

 < s：url id =cityListaction =getListOfCities/ > 
< sx：autocompleter href =％{cityList}name =citieskeyValue =0value =---- SELECT ONE -----/> 
  

有没有人有解决方案？我确定添加

 <％@ taglib prefix =sjuri =/ struts-jquery-tags ％> 
  

和内部头：

 < sj：head jqueryui =true/> 
  

谢谢。

解决方案

（太长的评论，将一些类似于您的片段的部分版本混合在一起。）

主要问题是您的结果集 root 到城市，意味着返回的JSON没有城市所以autocomplete的列表属性不知道从哪里获取它的数据。

说：是这个版本中的 selectBox 功能，当我删除该属性时，我看到数据，当我键入，它设置为true，我什么也没有。

然而，我不知道选择过滤，这意味着即使正确突出显示匹配的字符，也不会删除不匹配的条目;我相信他们应该是。

无关，但为什么要从VOs创建地图？除非我有一个体面的原因（例如， CityVO 太大或包含敏感信息）只需使用 listKey 和 listValue 属性，并使用服务已经返回的内容。

I feel this is a really easy fix but I'm stumped. I've been searching around all day but my code seems to match that of working examples. I'm using Struts+SpringMVC+Hibernate and I'm in the process of replacing all my dojo tags with jQuery tags. The jQuery dropdown is not calling the associated action.

Here is the relevant code:

Struts.xml

<action name="getListOfCities" class="cityActions">
        <result type="json">
            <param name="root">cities</param>
        </result>
</action>   

Page.jsp

<s:url id="cityList" action="getListOfCities"/>
     <sj:autocompleter name="cities" href="%{cityList}" list="cities" selectBox="true"/>

CityAction.java

public class CityActions implements ModelDriven<CityVO> {

CityService cityService;
private Map<String, String> cities = new HashMap<String, String>();
CityVO city = new CityVO();

public void setCityService(CityService cityService) {
    this.cityService = cityService;
}

public CityVO getModel(){
    return city;
}

public String execute() {
    return Action.SUCCESS;
}   

public String addCity(){
    try{
        cityService.addCity(city);
        return "SUCCESS";}
    catch(Exception e){
        return "ERROR";
    }catch(Throwable t){
        return "ERROR";
    }
}

public Map<String, String> getCities() {
    List<CityVO> cityList = cityService.listCities();

    Iterator<CityVO> iterator = cityList.iterator();
    while (iterator.hasNext()) {
        CityVO fac = iterator.next();
        cities.put(fac.getCityName(), Integer.toString(fac.getCityId()));
    }
    return cities;
}   

The dropdown menu shows up but is unpopulated. This is what I had before which worked fine:

<s:url id="cityList" action="getListOfCities" />
<sx:autocompleter href="%{cityList}" name="cities" keyValue="0" value="---- SELECT ONE-----"/>

Does anyone have a solution to this? I've made sure to add

<%@ taglib prefix="sj" uri="/struts-jquery-tags"%> 

and inside head:

<sj:head jqueryui="true"/>

Thanks.

解决方案

(Too long for comment. Cobbled together a partial version of something similar to your snippets.)

The primary issue is that your result sets root to cities, meaning the returned JSON has no cities key, so the autocomplete's list attribute doesn't know where to get its data.

That said: there is something funky with the selectBox functionality in this version; when I remove that attribute I see data when I type, with it set to true, I get nothing.

I don't, however, see selection filtering, meaning that even though it's correctly highlighting matching characters, non-matching entries aren't being removed; I believe they should be.

Unrelated, but why bother creating a map from the VOs? Unless I had a decent reason (e.g., CityVO is too big or contains sensitive info) just use the listKey and listValue attributes and use what the service already returns.

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