无法使用数据表从jsf发送邮件，

这是我的Xhtml页面，我在这里使用列表

员工Id
#{list.employee.employeeId}
员工姓名
#{list.employee.employeeName}
请假
#{list.leaveStartDate}
休假开始日期
#{list.leaveStartDate}
假期结束日期
#{list.leaveEndDate}
天数
#{list.leaveEndDate}
带薪假期
#{list.leaveBalance}
留下描述
#{list.leaveDescriptions}
评论

我在选择特定行按钮时遇到问题

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多次调用serive方法…我使用getVacationList（）显示列表，但不向特定员工发送邮件。首先，将approveVacation方法放在approveVacationBean中

然后更改方法以接受列表作为参数（我猜它是VacationDTO）

最后，您应该将commandButton与approveVacation方法链接：

  <h:form>


            <h:dataTable headerClass="header" rowClasses="oddRow,evenRow" value="#{approveVacationBean.vacationList}"
                    var="list">
                     <h:column>
                        <f:facet name="header">Employee Id</f:facet>
                    #{list.employee.employeeId}
                </h:column>
                     <h:column>
                        <f:facet name="header">Employee Name</f:facet>
                    #{list.employee.employeeName}
                </h:column>

                  <h:column>
                        <f:facet name="header">Leave Applied</f:facet>
                    #{list.leaveStartDate}

                </h:column>
                    <h:column>
                        <f:facet name="header">Leave Start Date</f:facet>
                    #{list.leaveStartDate}

                </h:column>


                    <h:column>
                        <f:facet name="header">Leave End Date</f:facet>
                    #{list.leaveEndDate}
                </h:column>
                    <h:column>
                        <f:facet name="header">No of days</f:facet>
                    #{list.leaveEndDate}


</h:column>
<h:column>
<f:facet name="header">Paid Leave Balence</f:facet>
  #{list.leaveBalance}
  </h:column>

                  <h:column>
                  <f:facet name="header">Leave  Description</f:facet>
                  #{list.leaveDescriptions}


                  </h:column>
                <h:column>
                        <f:facet name="header">Comment</f:facet>
                    <h:inputTextarea ></h:inputTextarea>
                </h:column>
                <h:column>
                        <f:facet name="header"></f:facet>
                <h:commandButton value="Approve"/>
                <h:commandButton value="Reject"/>
                </h:column>

                </h:dataTable>

---

}

MB holding vacationList（）的范围是什么？您是否使用@PostConstruct初始化假期列表？显示你的MB代码…我尝试了所有范围。我正在使用getVacationList（）…我没有使用@PostConstruct。。

  <h:form>


            <h:dataTable headerClass="header" rowClasses="oddRow,evenRow" value="#{approveVacationBean.vacationList}"
                    var="list">
                     <h:column>
                        <f:facet name="header">Employee Id</f:facet>
                    #{list.employee.employeeId}
                </h:column>
                     <h:column>
                        <f:facet name="header">Employee Name</f:facet>
                    #{list.employee.employeeName}
                </h:column>

                  <h:column>
                        <f:facet name="header">Leave Applied</f:facet>
                    #{list.leaveStartDate}

                </h:column>
                    <h:column>
                        <f:facet name="header">Leave Start Date</f:facet>
                    #{list.leaveStartDate}

                </h:column>


                    <h:column>
                        <f:facet name="header">Leave End Date</f:facet>
                    #{list.leaveEndDate}
                </h:column>
                    <h:column>
                        <f:facet name="header">No of days</f:facet>
                    #{list.leaveEndDate}


</h:column>
<h:column>
<f:facet name="header">Paid Leave Balence</f:facet>
  #{list.leaveBalance}
  </h:column>

                  <h:column>
                  <f:facet name="header">Leave  Description</f:facet>
                  #{list.leaveDescriptions}


                  </h:column>
                <h:column>
                        <f:facet name="header">Comment</f:facet>
                    <h:inputTextarea ></h:inputTextarea>
                </h:column>
                <h:column>
                        <f:facet name="header"></f:facet>
                <h:commandButton value="Approve"/>
                <h:commandButton value="Reject"/>
                </h:column>

                </h:dataTable>

<h:commandButton value="Approve" ajax="false" action="#{approveVacationBean.approveVacation(list)}"/>

public void approveVacation(VacationDTO vacation) throws AddressException,MessagingException {

vacation.setIsApproved((byte)1);
getVacationService().approveVacation(vacation);
String to=vacation.getEmployee().getEmployeeEmailAddress();
String name=vacation.getEmployee().getEmployeeName();
getVacationService().approveVacation(vacation);
Util.sendMail(to, "Hi"+name,
        "Your vacation have been approved");