java JSF 从 List<School> 添加到 selectOneMenu
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/6886000/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
JSF Add to selectOneMenu from a List<School>
提问by Illep
I have a List object which hold School.Id, School.Name, and School.Address .
我有一个 List 对象，其中包含 School.Id、School.Name 和 School.Address。
I need to list all the School.Name in a selectOneMenu List box. How will be the Java code and the corresponding JSF code will be.
我需要在 selectOneMenu 列表框中列出所有 School.Name。Java 代码和相应的 JSF 代码将如何。
My workings so far;
到目前为止我的工作；
<h:selectOneMenu value="#{School.listschoolName}">
<f:selectItems value="#{School.listschoolName}" />
</h:selectOneMenu>
Java Class
Java类
//And also i got the corresponding getters and setters for these
private List<School> listschool;
public void listschoolName(){
setListschool(hml.findAllSchool());
}
The findAllSchool()method actually returns a List<School>object.
该findAllSchool()方法实际上返回一个List<School>对象。
I need to display these School Names on a List Box (dropdown / selectOneMenu ). How can i do this ?
我需要在列表框（下拉列表/ selectOneMenu ）上显示这些学校名称。我怎样才能做到这一点 ？
- I am using Netbeans 6.9.1 and Galssfish 3
- 我正在使用 Netbeans 6.9.1 和 Galssfish 3
回答by Julien Lafont
You can use the var, itemLabeland itemValueattributes :
您可以使用var,itemLabel和itemValue属性：
<h:selectOneMenu value="#{bean.selectedSchool}">
<f:selectItems value="#{School.listschoolName}" var="_school" itemValue="#{_school.id}" itemLabel="#{_school.name}"/>
</h:selectOneMenu>
According you have a getId() and getName() in the School class, and a getSelectedSchool() and setSelectedSchool(School s) in your managed bean.
根据您在 School 类中有一个 getId() 和 getName() ，在您的托管 bean 中有一个 getSelectedSchool() 和 setSelectedSchool(School s) 。
