提问者:小点点

jsf2命令按钮,命令链接不触发操作


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;
}

共1个答案

匿名用户

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。