如何填充在春天一個下拉列表MVC

Question

想填充一個下拉列表中選擇一個JSP頁面上

我有我的網頁看起來像

<form:form method="POST" action="addRss.htm" commandName="addNewRss" cssClass="addUserForm"> 
       <div class="floatL"> 
        <div class="padding5"> 
         <div class="fieldContainer"> 
          <strong>Title:</strong>&nbsp; 
         </div> 
         <form:errors path="title" cssClass="error"/> 
         <form:input path="title" cssClass="textArea" /> 
        </div> 

        <div class="padding5"> 
         <div class="fieldContainer"> 
          <strong>Description:</strong>&nbsp; 
         </div> 
         <form:errors path="description" cssClass="error"/> 
         <form:input path="description" cssClass="textArea" /> 
        </div> 
        <div class="padding5"> 
         <div class="fieldContainer"> 
          <strong>Language:</strong>&nbsp; 
         </div> 
         <form:errors path="language" cssClass="error"/> 
         <form:select path="language" cssClass="textArea" /> 
        </div> 
       </div> 
       <div class="floatR"> 
        <div class="padding5"> 
         <div class="fieldContainer"> 
          <strong>Link:</strong>&nbsp; 
         </div> 
         <form:errors path="link" cssClass="error"/> 
         <form:input path="link" cssClass="textArea" /> 
        </div> 
        <div class="padding5"> 
         <div class="fieldContainer"> 
          <strong>Url:</strong>&nbsp; 
         </div> 
         <form:errors path="url" cssClass="error"/> 
         <form:input path="url" cssClass="textArea" /> 
        </div> 
        <div class="padding5"> 
         <div class="fieldContainer"> 
          <strong>Url</strong>&nbsp; 
         </div> 
         <form:errors path="url" cssClass="error"/> 
         <form:input path="url" cssClass="textArea" /> 
        </div> 
       </div> 
       <input type="submit" class="floatR" value="Add New Rss"> 
      </form:form> 

和我的控制器

public class AddRssController extends BaseController { 

    private static final String[] LANGUAGES = { "AL", "AK", "AZ", "AR", "CA", 
     "CO", "CT", "DE", "DC", "FL", "GA", "HI", "ID", "IL", "IN", "IA", 
     "KS", "KY", "LA", "ME", "MD", "MA", "MI", "MN", "MS", "MO", "MT", 
     "NE", "NV", "NH", "NJ", "NM", "NY", "NC", "ND", "OH", "OK", "OR", 
     "PA", "RI", "SC", "SD", "TN", "TX", "UT", "VA", "VT", "WA", "WV", 
     "WI", "WY" }; 

    public AddRssController() { 
     setCommandClass(RSS.class); 
     setCommandName("addNewRss"); 
    } 

     @Override 
    protected Object formBackingObject(HttpServletRequest request) 
        throws Exception { 
     RSS rantForm = (RSS) super.formBackingObject(request); 
    // rantForm.setVehicle(new Vehicle()); 
     return rantForm; 
    } 

    @Override 
    protected Map referenceData(HttpServletRequest request) throws Exception { 
     Map referenceData = new HashMap(); 

     referenceData.put("language", LANGUAGES); 

     return referenceData; 
    } 

    @Override 
    protected ModelAndView onSubmit(Object command, BindException bindException) 
        throws Exception { 
     RSS rss = (RSS) command; 
     rssServiceImplementation.add(rss); 
     return new ModelAndView(getSuccessView()); 
    } 
} 

和我BaseController

public class BaseController extends SimpleFormController implements Controller { 

    public UserServiceImplementation userServiceImplementation; 

    public UserServiceImplementation getUserServiceImplementation() { 
     return userServiceImplementation; 
    } 

    public void setUserServiceImplementation(UserServiceImplementation userServiceImplementation) { 
     this.userServiceImplementation = userServiceImplementation; 
    } 

    public RssServiceImplementation rssServiceImplementation; 

    public RssServiceImplementation getRssServiceImplementation() { 
     return rssServiceImplementation; 
    } 

    public void setRssServiceImplementation(RssServiceImplementation rssServiceImplementation) { 
     this.rssServiceImplementation = rssServiceImplementation; 
    } 

} 

但它不起作用

有什麼建議嗎？

Answer 1

我解決了這個問題

<form:select path="language" cssClass="textArea"> 
    <option value="Select" label=" - Select - " ></option> 
    <form:options items="${languages}"/> 
</form:select> 

Answer 2

下面是要顯示在下拉數據向下的代碼。

<form:select path="language"> 
     <form:options items="${languages}" /> 
</form:select> 

其他有用的鏈接。

mkyong example for dropdown of Spring MVC 1.

2. similar stackoverflow question