数据采集系统开发流程-5

参与调查

-----------------

1.导航栏-->参与调查

2.EngageSurveyAction.findAllAvailableSurveys()方法

public String findAllAvailableSurveys(){

this.surveys = surveyService.findAllAvailableSurveys();

public List<Survey> findAllAvailableSurveys(){

String hql = "from Survey s where s.closed = ?" ;

return surveyDao.findEntityByHQL(hql,false);

}

return "engageSurveyListPage" ;

}

3.struts.xml

<!-- EngageSurveyAction -->

<action name="EngageSurveyAction_*" class="engageSurveyAction" method="{1}">

<result name="engageSurveyListPage">/engageSurveyList.jsp</result>

</action>

4.跳转到/.jsp

/**

* 获得图片的url地址

*/

public String getImageUrl(String path){

if(ValidateUtil.isValid(path)){

String absPath = sc.getRealPath(path);

File f = new File(absPath);

if(f.exists()){

// /lsn_surveypark001/upload/xxx.jpg

return sc.getContextPath() + path ;

}

}

return sc.getContextPath() + "/question.bmp" ;

}

点击调查进行参与

-------------------------

1.参与调查视图页面-->点击调查

2.EngageSurveyAction.entry()方法

public String entry(){

sid

//查询调查首页

this.currPage = surveyService.getFirstPage(sid);

public Page getFirstPage(Integer sid){

String hql = "from Page p where p.survey.id = ? order by p.orderno asc";

List<Page> list = pageDao.findEntityByHQL(sid);

Page p = list.get(0);

p.getQuestions().size();//初始化问题集合

p.getSurvey().getTitle();//初始化调查对象

return p ;

}

//查询当前调查存放到session中.

sessionMap.put("current_survey",currPage.getSurvey());

return "engageSurveyPage" ;

}

3.struts.xml

4.跳转到/engageSurvey.jsp

[类似于designSurvey.jsp]

最大页序和最小页序的处理方式

----------------------------------

1.

class Survey ...{

...

private float minOrderno ;

private float maxOrderno ;

//get/set

}

Survey.hbm.xml

<property name="minOrderno" formula="(select min(p.orderno) from pages p where p.surveyid = id)" />

<property name="maxOrderno" formula="(select min(p.orderno) from pages p where p.surveyid = id)" />

处理参与调查

---------------------

1.参与调查页面-->上一步/下一步/完成/退出

2.EngageSurveyAction.doEngageSurvey()

public String doEngageSurvey(){

String submitName = getSubmitName();

if(上一步?){

mergeParamsIntoSession();

this.currPage = surveyService.getPrePage(currPid);

return "engageSurveyPage" ;

}

else if(下一步?){

mergeParamsIntoSession();

this.currPage = surveyService.getNextPage(currPid);

return "engageSurveyPage" ;

}

else if(完成?){

mergeParamsIntoSession();

//TODO答案入库

clearSessionData();

return "engageSurveyAction" ;

}

else if(退出?){

clearSessionData();

return "engageSurveyAction" ;

}

}

public String entry(){

....

//将存放所有参数的大map -->session中(用户保存答案和回显).

sessionMap.put(ALL_PARAMS_MAP,new HashMap<Integer,Map<String,String[]>>());

}

删除最后一个页面时,会出现无法将null赋值给基本类型的属性 for minOrderno来说.

-----------------------

1.每个调查至少有一个页面,删除时需要做判定.

2.

3.

//问题统计模型

class QuestionStatisticsModel{

private Question q ;

private int count ;

private List<OptionStatisticsModel> osms = ...

}

//选项统计模型

class OptionStatisticsModel{

private int optionIndex ;

private String optionLabel ;

private int count ;

private int matrixRowIndex ;

private String matrixRowLabel ;

...

}

统计回答问题的总人数