forms - Spring MVC 表单 :select selected value?

Question

有没有办法通过 Spring MVC 在下拉列表中选择当前值<form:options> ？

Answer 1

无需使用 if else

示例:

Student student = new Student();
student.gender = "F";
model.addObject("student", student);

Map<String, String> genders = new LinkedHashMap<String, String>();
genders.put("M", "Male");
genders.put("F", "Female");
model.addObject("genders", genders);

JSP代码

modelAttribute 和 commandName 可以互换

<c:url value="/Student/Edit" var="editstudenturl"/>
<form:form method="post" action="${editstudenturl}" modelAttribute="student" class="form-horizontal">
  <form:select path="gender" class="form-control" id="gender" >
    <form:options items="${genders}" />
  </form:select>
</form:form>