Question

在Spring boot中谁接收帖子模型并同时发送vars到thymeleaf模板？

@Controller
public class ProfilingController {

    @GetMapping("/")
    public String main(Model model){

        FormModel form_model = new FormModel();
        model.addAttribute("form_model", form_model);
        model.addAttribute("demo", "abc");

        return "main_template";
    }

    @PostMapping("/")
    public String receive(@ModelAttribute ModelForm form_model){

        FormModel form_model = new FormModel();

        // How to set model to send the var to thymeleaf template?
        model.addAttribute("form_model", form_model);
        model.addAttribute("demo", "abc");

        return "main_template";
    }
}

如果在post方法中接收模型，如何设置模型将vars发送到模板？，如果发送两个参数不起作用：

@PostMapping("/")
public String receive(Model model, @ModelAttribute ModelForm form_model){

model_form为空。

模板：

<!DOCTYPE html>
<html>
    <head>
        <title>Demo</title>
    </head>
    <body>
        <form class="form-signin" action="#" method="post" th:action="@{/}" th:object="${form_model}">
            <input th:field="*{email}" required="required" type="email" />
            <input th:field="*{password}" type="password" />
            <p th:text="${demo}"></p>
            <button type="submit">Submit</button>
        </form>
    </body>
</html>

Answer 1

您可以使用ModelMap执行此操作，如下所示：

我已经评论了新的form_model对象创建，假设您需要将收到的数据保留发送给用户。

    @PostMapping("/")
    public String receive(@ModelAttribute ModelForm form_model, ModelMap modelMap){

        //other code to call service layer & save the data

        //Commented new object creation for FormModel
        //FormModel form_model = new FormModel();

        modelMap.addAttribute("form_model", form_model);
        modelMap.addAttribute("demo", "abc");

        return "main_template";
    }

如何从同一个控制器同时发送变量和接收模型？

1 个答案: