請求方法「POST」春不支持MVC

Question

這是我的形式：

<form action="${pageContext.request.contextPath}/admin/editc" method="POST" id="editForm"> 
    <input type="text" name="username" class="form-control" /> 
    <input type="text" name="password" class="form-control" /> 
    <input type="submit" value="submit" > 
</form> 

這是我的控制器方法：

@RequestMapping(value = "/admin/edit", method = RequestMethod.GET) 
public ModelAndView editPage() { 

    ModelAndView model = new ModelAndView(); 
    model.addObject("title", "User edit Form - Database Interaction"); 
    model.addObject("message", "This page is for ROLE_ADMIN only!"); 
    model.setViewName("editpage"); 
    System.out.println("getting edit page"); 

    return model; 

} 


@RequestMapping(value = "/admin/editc", method = RequestMethod.POST) 
public ModelAndView updateCredentials() { 
//  System.out.println("Username= "+username+" password= "+password); 
    ModelAndView model = new ModelAndView(); 
    model.addObject("title", "Credential Edit Operation"); 
    model.addObject("message", "You are successfully updated your credentials"); 
    model.addObject("edited", "TRUE"); 
    model.setViewName("editpage"); 
    System.out.println("executed updateCredentials POST method"); 

    return model; 

} 

現在的問題是我收到405錯誤控制檯類似如下：

org.springframework.web.servlet.PageNotFound handleHttpRequestMethodNotSupported 
WARNING: Request method 'POST' not supported 

任何人都可以幫我解決這個錯誤嗎？

Answer 1

您的java方法的簽名是錯誤的，您還需要添加您期望從POST中獲得的內容。看看這個guide來更正你的代碼。

Answer 2

您首先需要一個GET方法來顯示錶單和一個POST來提交它。

@RequestMapping(value = "/admin/editc", method = RequestMethod.GET) 
public ModelAndView updateCredentials() { 
    return new ModelAndView("editPage"); 
} 

@RequestMapping(value = "/admin/editc", method = RequestMethod.POST) 
public ModelAndView updateCredentials(@ModelAttribute UserCredentials credentials) { 
    someService.save(credentials); 
    ... 
}