我有两种不同的形式,如果我对一种形式应用操作,则第二种形式中的字段值将被重置(清除或恢复为默认值),我不知道发生了什么?
我正在将Primefaces 7与JSF(jsf-api 2.2.11,jsf-impl 2.2.11和javax.servlet-api 3.0.1)结合使用。
我试图从下面的帖子中覆盖Sammy函数
https://stackoverflow.com/questions/10652881/how-to-prevent-form-submit#I%20also%20had%20this%20problem%20and%20I%20found%20a%20solution%20in
我也试图保存缓存
< -meta http-equiv="cache-control" content="cache, store" / ->
这是我的第一个表单代码
<h:form id="createStageForm" class="form-horizontal">
<h:outputLabel >Notes :</h:outputLabel>
<h:inputText value="#{stageBean.stageDto.notes}"/>
<h:commandButton value="Save" action="#{stageBean.saveDetails}"/>
</h:form>
和第二种形式
<h:form>
<h:dataTable value="#{stageBean.items}" var="item">
<h:column>
<h:inputText value="#{item.name}" />
</h:column>
<h:column>
<h:commandButton value="-" action="#{stageBean.remove(item)}" />
</h:column>
</h:dataTable>
<h:commandButton value="+" action="#{stageBean.add}" />
</h:form>
我更新了帖子以在下面设置Bean实现
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;
@ManagedBean
@ViewScoped
public class StageBean {
private List<EmployeeDto> items;
public ArrayList<StageDto> listFromDB;
private StageDto stageDto;
@PostConstruct
public void init() {
listFromDB = SatgeDatabaseOperation.getListFromDB();
items = new ArrayList<EmployeeDto>();
items.add(new EmployeeDto());
}
private long id;
private String notes;
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getNotes() {
return notes;
}
public void setNotes(String notes) {
this.notes = notes;
}
public void add() {
items.add(new EmployeeDto());
}
public void remove(EmployeeDto item) {
items.remove(item);
}
public void save() {
System.out.println("items: " + items);
}
public ArrayList<StageDto> getListFromDB() {
return listFromDB;
}
public void setListFromDB(ArrayList<StageDto> listFromDB) {
this.listFromDB = listFromDB;
}
public String saveDetails() {
return SatgeDatabaseOperation.saveDetailsInDB(stageDto);
}
}
在第二种表单上执行操作时,是否有防止表单重置的方法?
答案 0 :(得分:0)
感谢@Kukeltje这完全是关于ajax
仅更新要更新的特定表单
<h:form id="myForm2">
<h:dataTable value="#{stageBean.items}" var="item">
<h:column>
<h:inputText value="#{item.name}" />
</h:column>
<h:column>
<h:commandButton value="-" action="#{stageBean.remove(item)}" />
</h:column>
</h:dataTable>
<h:commandButton value="+" action="#{stageBean.add}" >
<f:ajax execute="@form" render="myForm2" />
</h:commandButton>
</h:form>