Question

我有一个JSF表单，在单击操作按钮时调用托管bean的方法。该方法已成功调用，但现在我想访问bean中表单字段中输入的值。这是我的代码。

观点：

<h:form class="form-horizontal" action= "#{hello_World.message}" method="post" id="formId">      
 <div class="control-group">
  <label class="control-label" for="inputEmail">First Name</label>
  <div class="controls">
  <h:inputText id="firstname" placeholder="First Name" value="#{submission.firstName> </h:inputText>
  </div> 

  <div class="control-group">
   <label class="control-Label">Address</label>
   <div class="controls">
   <input type="text" placeholder="Address" />
   </div>
   </div>
    <h:commandButton value="click" action="#{submission.submitted}"/>       
</h:form>

模特：

@ManagedBean(name="submission", eager=true)
public class MainClass {    
String firstName = "Pranbsh";
public MainClass(){
    System.out.println("Helloworld started from managed bean");
}
private String getFirstName(){
    return firstName;
}
public void submitted(){
    System.out.println("Bean executed");
    System.out.println("First name is ") ;      
  }
}

Answer 1

使用getter和setter来获取xhtml这样的值

JSF form

<h:form class="form-horizontal" action= "#{hello_World.message}" method="post" id="formId">      
  <div class="control-group">
  <label class="control-label" for="inputEmail">First Name</label>
  <div class="controls">
  <h:inputText id="firstname" placeholder="First Name" value="#{submission.firstName> </h:inputText>
  </div> 

   <div class="control-group">
   <label class="control-Label">Address</label>
   <div class="controls">
   <input type="text" placeholder="Address" />
   </div>
   </div>
    <h:commandButton value="click" action="#{submission.submitted}"/>       
</h:form>

Managed Bean

  public class Form {
    String firstName ="Pranish";

    public String getFirstName(){
        return firstName;
    }

    public void setFirstName(String firstName){
        this.firstName = firstName;
    }

    public void submitted(){
        System.out.println("Bean executed");
        setFirstName(firstName);
        System.out.println("First Name : " + getFirstName());   
    }

}

Answer 2

使用JSF时，您应该在表单上使用JSF字段，而不是使用：

<input type="text" placeholder="Address" />

您使用：

<h:inputText placeholder="Address" value="#{submission.address}"/>

在您的托管bean中：

@ManagedBean(name="submission", eager=true)
public class MainClass {  

private String address; //+ getters and setters

public MainClass(){
    System.out.println("Helloworld started from managed bean");
}

public void submitted(){
    System.out.println("Bean executed");
    System.out.println("First name is ") ;      
  }
}

Answer 3

您应该在支持bean中添加一些属性，如：

private String enteredValue;

并为该属性添加getter和setter。然后，您应将value属性添加到<h:inputText value="#{backingbean.enteredValue}"

中

现在，您可以通过“＆＃34;”按钮点击＆＃34;方法

Answer 4

我知道这个问题没有提及AJAX，但也许它对某人有帮助。

Java类应该具有前面提到的带有setter / getter 的属性但是primeFeaces提交按钮需要进程属性。

<h:inputText id="firstNameElem" value="#{someController.firstName}" /> <p:commandButton value="Ok" type="submit" ajax="true" process="@this firstNameElem" action="#{someController.doThings}"> </p:commandButton>

将文本字段值从jsf页传递到托管bean

4 个答案: