Question

我找到了一些关于此的例子和帖子，但无法找到完整的解决方案或示例我想使用枚举来保存单选按钮的值请帮忙。

我有一个如下所示的枚举：

public enum MyEnum implements Serializable {
SUNDAY, MONDAY, TUESDAY
}

我在jsp中有一个表单如下：

MyJSP.jsp

<form:form action="" method="post">
    <input type="radio" id="id1" name="name1" value="value1" >
    <input type="radio" id="id2" name="name2" value="value2" >
    <input type="radio" id="id3" name="name3" value="value3" >               
</form:form>

我有一个模型类如下：
MyModel.java

public class MyModel {
    private String temp;
    private MyEnum myEnum;
    //getters and setters here
}

我有一个控制器如下：
MyController.java

@Controller
@SessionAttributes(MyModel)
public class MyController {

  @ModelAttribute(MyModel)
  public MyModel initMyModel(final HttpServletRequest httpRequest, final HttpSession session) {
    MyModel myModel = new MyModel(.....);
    //code goes here

    return myModel;
  }

  @RequestMapping(value = , method = RequestMethod.GET)
  public String initialViewMyModel(final HttpServletRequest httpRequest, final HttpSession session) {
    return MyJsp;
  }

  @SuppressWarnings("boxing")
  @RequestMapping(value = , method = RequestMethod.POST)
  public String onSubmit(final @ModelAttribute(MyModel) MyModel myModel, final BindingResult bindingResult, final HttpServletRequest httpRequest, final ModelMap modelMap) {
    HttpSession session = httpRequest.getSession();
    //Here is the issue
    MyEnum[] myEnum= myModel.getmyEnum();   //I want here to get the index or anything so that I could identify the selected radio button and use the switch case further but getting null here
    switch (//----) {
        case SUNDAY :
            break;

        case MONDAY :
            break;

        case TUESDAY :
            break;
    }

    return "someotherJSP";
  }

如何将MyJsp.jsp中的单选按钮绑定到枚举值，以便根据所选的单选按钮获取枚举值？
简单的单选按钮或弹簧：无线电标签可以为我工作请帮忙！

Answer 1

表示单个操作的单选按钮必须具有相同的name。从以下开始：

<form:form action="" method="post">
  <input type="radio" name="day" value="SUNDAY" >
  <input type="radio" name="day" value="MONDAY" >
  <input type="radio" name="day" value="TUESDAY" >               
</form:form>

然后，只需收集控制器中的单选按钮值：

@RequestMapping
public String onSubmit(@RequestParam MyEnum day)
{
  ...
}

如果用户选择了其中一个单选按钮值，您将能够在映射的控制器方法中读取该值。您还可以在模型对象内的字段中收集选定的值，例如：

@RequestMapping
public String onSubmit(FormModel model)
{
  ...
}

其中FormModel是一个包含名为day的字段的Java类。

将枚举绑定到jsp中的单选按钮

1 个答案: