struts2 0-java poi getInpuStream報錯

java poi getInpuStream報錯

是這樣的，我寫了重載了兩個getInputStream方法，當調用不帶參數的方法時，運行正常，當調用帶參的方法則報 Can not find a java.io.InputStream with the name [inputStream] in the invocation stack的錯誤
代碼如下：
Struts2配置：

 <action name="ajaxUserDataExportAction" class="com.action.AjaxUserDataExportAction">
             <result  type="stream">
                 <param name="ContentType">application/vnd.ms-excel</param>
                 <param name="inputName">inputStream</param>                                      
                 <param name="contentDisposition">filename="user.xlsx"</param>
             </result>
        </action>   

spring配置

 <bean id="userManageService" class="com.hy.serviceimp.UserManageService">
    <property name="baceDaoImp" ref="baceDaoImp"></property>
</bean>

調用代碼：

調用帶參數的getInputStream，程序報錯

 public InputStream getInputStream()
    {
        System.out.println(userManageService.getInputStream(curPage, pageSize, sortName, sortOrder, searchValue)==null);
        return userManageService.getInputStream(curPage, pageSize, sortName, sortOrder, searchValue);
    }

調用不帶參數的，則運行正常

 public InputStream getInputStream()
    {
        System.out.println(userManageService.getInputStream()==null);
        return userManageService.getInputStream();
    }

最佳回答：

錯誤已經找到，是數據插入錯誤引起的