CDI中在同一页面注入相同的bean

在页面上写了两个inputtext，用inject在后台拿到了值，但是用下面的方法貌似两个b（b1和b2）拿到的都是第二个inputtext的值。请问怎么能分别拿到值？<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html 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">
    <f:view>
        <h:form>
        <h:head>
            <title>Facelet Title</title>
        </h:head>
        <h:body>
             <h:inputText  value="#{b.bs}"/>
             <h:inputText value="#{b.bs}"/>
            <h:commandButton action="#{a.test2}"/>
            <h:outputText value="#{a.r}"/>
        </h:body>
        </h:form>>
    </f:view>
</html>
package b;import javax.enterprise.context.RequestScoped;
import javax.inject.Inject;
import javax.inject.Named;@Named
@RequestScoped
public class a {    @Inject
    private b b1;
    @Inject
    private b b2;
   
    private String r = "we";    public String test2() {
        r = "being" + b1.getBs()+b2.getBs();
        return null;
    }    public String getR() {
        return r;
    }    public void setR(String r) {
        this.r = r;
    }    public b getB1() {
        return b1;
    }    public void setB1(b b1) {
        this.b1 = b1;
    }    public b getB2() {
        return b2;
    }    public void setB2(b b2) {
        this.b2 = b2;
    }
}
package b;import javax.enterprise.context.RequestScoped;
import javax.inject.Named;@Named(value = "b")
@RequestScoped
public class b {    private String bs;    public String getBs() {
        return bs;
    }    public void setBs(String bs) {
        this.bs = bs;
    }
    public b() {
    }
}