Spring SimpleFormController 3.0 [英] Spring SimpleFormController in 3.0

问题描述

我注意到这个控制器现在已经在最近的春天被弃用，并且想知道替代控制器是什么？

i notice that this controller has now been deprecated in the latest spring and was wondering what the alternative controller is?

推荐答案

在Spring 3.0中，您应该使用由 @Controller 注释的简单类。这种控制器可以处理多个请求。每个请求都由自己的方法处理。这些方法由 @RequestMapping 注释。

In Spring 3.0 you should use simple classes annotated by @Controller. Such controller can handle more than one request. Each request is handled by its own method. These methods are annotated by @RequestMapping.

你需要重新思考的一件事是，这是一所旧学校 SimpleFormController 处理很多不同的请求（至少：一个获取表单，第二个提交表单）。你必须手工处理这个问题。但请相信我这更容易。

One thing you need to rethink is the fact, that a old school SimpleFormController handle a lot of different requests (at least: one to get the form and a second to submit the form). You have to handle this now by hand. But believe me it is easier.

例如，REST风格的这个控制器将处理两个请求：

For example this Controller in REST Style, will handle two requests:

• / book - POST：创建一本书


• / book / form - 获取：获取创建表单

Java代码：

@RequestMapping("/book/**")
@Controller
public class BookController {

    @RequestMapping(value = "/book", method = RequestMethod.POST)
    public String create(
        @ModelAttribute("bookCommand") final BookCommand bookCommand) {

        Book book = createBookFromBookCommand(bookCommand);
        return "redirect:/book/" + book.getId();
    }

    @RequestMapping(value = "/book/form", method = RequestMethod.GET)
    public String createForm(final ModelMap modelMap) {
        modelMap.addAttribute("all", "what you need");
        return "book/create"; //book/create.jsp
    }
}

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