在此页面中,h:命令按钮
不会触发托管bean中的操作方法,但当我单击按钮时,它会重新加载当前页面。我不知道为什么请帮忙。
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
>
<h:head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Bootstrap 101 Template</title>
<!-- Bootstrap -->
<h:outputStylesheet library ="css" name="bootstrap.css"/>
<h:outputStylesheet library ="css" name="bootstrap-responsive.css"/>
<h:outputScript library="js" name="bootstrap.js"/>
<h:outputScript library="js" name="bootstrap-responsive.js"/>
</h:head>
<h:body>
<h:form>
<label><h3>Search</h3></label>
<h:selectOneMenu id="searchtype" value="#{searchView.searchType}" style="width: 230px">
<f:selectItems value="#{searchView.searchType}"/>
</h:selectOneMenu>
<br/>
<h:inputText id="searchvalue" value="#{searchView.searchvalue}" required="true" style="height: 30px; width: 230px">
<p:watermark value="Search type" for="searchvalue"/>
</h:inputText>
<br/>
<h:commandButton id="searchbtn" value="Search" action="#{searchView.prepareSearchResultView()}" styleClass="btn"/>
</h:form>
</h:body>
</html>
我的search chView托管bean是会话范围的,这里是托管bean中的准备SearchResultView()方法;
public String prepareSearchResultView(){
this.searchResultList = searchCustomer();
if(!this.searchResultList.isEmpty()){
this.citizenSearchResultList = getCitizenSearchList();
this.orgSearchResultList = getOrganizationSearchList();
if(getCitizenSearchList().getRowCount() >0){
return "citizensearchlist";
}else if(getOrganizationSearchList().getRowCount()>0){
return "orgsearchlist";
}
}else
return "nosearchresult";
//FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_INFO, "no such result", "no such result"));
return null;
}
和getSearchType()方法
public Map<String, Object> getSearchType(){
Map<String, Object> returnMap = new LinkedHashMap<String, Object>();
if(loginview.isAbleToGetCitizenInfo() || loginview.isUserAdmin()){
returnMap.put("searchtype1", "searchcitizenbyregno");
returnMap.put("searchtype2", "searchcitizenbyname");
}
if(loginview.isAbleToGetOrgInfo() || loginview.isUserAdmin()){
returnMap.put("searchtype3", "searchorgbyregno");
returnMap.put("searchtype4", "searchgorgbyname");
returnMap.put("searchtype5", "searchorgbystateregno");
}
return returnMap;
}
您正在使用
<h:selectOneMenu id="searchtype" value="#{searchView.selectedType}" style="width: 230px">
<f:selectItems value="{searchView.searchType}"/>
</h:selectOneMenu>
请查看以下帖子以更好地理解概念:Primeface selectOneMenu监听器未使用字符串以外的对象调用
此外,通过执行业务逻辑的getter检索f: selectItems
值不是一个好的做法。您应该在托管bean中创建一个属性,在构造函数中初始化该映射。更重要的是,不要使用映射,最好使用列表并将键和值封装在自定义对象中。
<h:selectOneMenu id="searchtype" value="#{searchView.selectedType}" style="width: 230px">
<f:selectItems value="{searchView.searchType}"
var="searchType"
itemLabel=#{searchType.key}
itemValue=#{searchType.value}/>
</h:selectOneMenu>
List<RowItems> searchType = Lists.newArrayList(); // guave constructor
@PostConstruct
public void initBean(){
if(loginview.isAbleToGetCitizenInfo() || loginview.isUserAdmin()){
searchType.add(new RowItems("searchType1", "searchcitizenbyregno"));
searchType.add(new RowItems("searchtype2", "searchcitizenbyname"));
}
if(loginview.isAbleToGetOrgInfo() || loginview.isUserAdmin()){
searchType.add(new RowItems("searchtype3", "searchorgbyregno"));
searchType.add(new RowItems("searchtype4", "searchgorgbyname"));
searchType.add(new RowItems("searchtype5", "searchorgbystateregno"));
}
}
public List<RowItems> getSearchType(){
return searchType
}
最后,您的准备SearchList
函数的最后一条语句返回null
是不必要的,应该删除,因为根据您发布的内容,它是一个无法访问的代码。