更新操作未执行 - 已解决 [org.springframework.web.HttpRequestMethodNotSupportedException：不支持请求方法“POST”]

Question

我正在尝试在 spring boot + thymeleaf 中开发应用程序，并且我能够从 MySQL 数据库的配置文件选项卡中检索登录的用户详细信息，但是当我尝试更改一两个字段详细信息时（更新）并点击更新按钮，它向我显示 错误消息 - Fri Sep 04 20:39:47 IST 2020 出现意外错误（类型=不允许方法，状态=405）。 不支持请求方法“POST”

查看我的控制器代码（我正在使用在类顶部注释的@RestController）-

@RequestMapping(value = "/profile", method = RequestMethod.PUT)
    public ModelAndView updateProfile(@ModelAttribute Customer customer, HttpSession session) {
        
        ModelAndView model = new ModelAndView();
        
        Customer exist = cRepo.findByCustEmail(customer.getCustEmail());

        if(exist != null) {
            if(exist.getCustEmail().equals(session.getAttribute("emailsession"))) {
                
                cRepo.save(customer);
                model.addObject("msg", "User Details has been successfully updated!!");
                model.setViewName("profile");
            }
                
        }else {
            
            model.addObject("exist", "Please enter correct email address!");
            String email = (String) session.getAttribute("emailsession");
            Customer cust = cRepo.findByCustEmail(email);
            model.addObject("customer", cust);
            model.setViewName("profile");
            
        }
        
        return model;
    }

Thymleaf 代码 (html) -

<div align="center" class="alert alert-success" th:if="${msg}" th:utext="${msg}"></div>
<div align="center" class="alert alert-danger" th:if="${exist}" th:utext="${exist}"></div>

    <!-- Modal HTML -->
<div id="myModal">
    <div class="modal-dialog modal-login">
        <div class="modal-content">
            <div class="modal-header">              
                <h4 class="modal-title">Profile Details</h4>
            
            </div>
            <div class="modal-body">
                <form name="myForm" th:action="@{/profile}" th:object="${customer}" method="post">
                    
                    <div class="form-group">
                        <i class="fa fa-id-card"></i> 
                        <input name="id" type="text" class="form-control" placeholder="Enter Id" th:field="${customer.custId}" disabled="true" required="required" />
                    </div>
                    <div class="form-group">
                        <i class="fa fa-user"></i>
                        <input name="name" type="text" class="form-control" placeholder="Enter Name" th:field="${customer.custName}"  required="required" />
                    </div>
                    <div class="form-group">
                        <i class="fa fa-envelope"></i> 
                        <input name="email" type="email" class="form-control" placeholder="Enter Email" th:field="${customer.custEmail}" required="required" />
                    </div>
                    <div class="form-group">
                        <i class="fa fa-lock"></i>
                        <input name="password" type="text" class="form-control" placeholder="Enter Password" th:field="${customer.custPassword}" required="required" />                 
                    </div>
                    <div class="form-group">
                        <input type="submit" class="btn btn-primary btn-block btn-lg" value="Update" />
                    </div>
                </form>
            </div>
        </div>
    </div>
</div>     

我希望当用户登录和访问时，他/她应该能够检查他/她的个人资料（我能够执行工作代码）以及当用户想要更新几个字段时（基于 1-2选择）并点击更新，他/她应该能够更新详细信息（而不是创建新用户或记录），因为当我在类顶部使用 @Controller 时，此代码工作并创建新用户而不是更新。

Answer 1

您的控制器带有 @RequestMapping(value = "/profile", method = RequestMethod.PUT) 注释，这使其成为 PUT 端点。但是，您的请求显然是 POST。如果我们查看您的 html 表单，它包含method="post"。 HTML 表单仅支持 GET 和 POST 作为有效方法，因此您需要将端点更新为 POST 端点。

tldr;

RequestMapping(value = "/profile", method = RequestMethod.PUT)

到

RequestMapping(value = "/profile", method = RequestMethod.POST) 

Answer 2

您请求的映射是 POST，但控制器已设置接受请求作为 PUT。

<form name="myForm" th:action="@{/profile}" th:object="${customer}" **method="post"**>


@RequestMapping(value = "/profile", method = **RequestMethod.PUT**) 

只需以相似的方式保持这些都应该相同。

Answer 3

请检查我的发现并解决这个问题。

@RequestMapping(value = "/profile" ,method = RequestMethod.POST)
    public ModelAndView updateProfile(@ModelAttribute Customer customer, HttpSession session) {
        
        ModelAndView model = new ModelAndView();
        
        Customer exist = cRepo.findByCustEmail(customer.getCustEmail());

        if(exist != null) {
            if(exist.getCustEmail().equals(session.getAttribute("emailsession"))) {
                
                **exist.setCustId(exist.getCustId());
                exist.setCustName(customer.getCustName());
                exist.setCustEmail(customer.getCustEmail());
                exist.setCustPassword(customer.getCustPassword());**
                
                cRepo.save(exist);
                model.addObject("msg", "User Details has been successfully updated!!");
                
                model.addObject("customer", exist);
                model.setViewName("profile");
            }
                
        }else {
            
            model.addObject("exist", "Please enter correct email address!");
            String email = (String) session.getAttribute("emailsession");
            Customer cust = cRepo.findByCustEmail(email);
            model.addObject("customer", cust);
            model.setViewName("profile");
            
        }
        
        return model;
    }