Spring MVC spring：bind标签

Question

试图抓住<spring:bind>标签。我正在尝试打印String值。代码类似于：

  mySimpleBean myBean = presentStudent.getSubjects().getTeacherName();
    String firstName = myBean.getTeacherFirstName() 

我从另一个bean“presentStudent”获得“myBean”。在jsp上我正在尝试：

  <spring:bind path="presentStudent.subjects.teacherName.teacherFirstName">
    <input type="text" name="${status.expression}" value="${status.value}">

但它没有打印任何东西。        “presentStudent”也是此形式的commandObject：

<form:form id="stuTeachForm" name="stuTeachForm" method="post" commandName="presentStudent"
    action="getStuTeachData.html">

Answer 1

您可以使用spring输入标记代替bind标记

<form:form id="stuTeachForm" name="stuTeachForm" method="post" commandName="presentStudent" action="getStuTeachData.html">
   <form:input type="text" path="subjects.teacherName.teacherFirstName"/>

也可能值得输出所需的值来检查你的bean是否已正确填充

First name is ${presentStudent.subjects.teacherName.teacherFirstName}