Spring MVC定制方法参数绑定 [英] Spring MVC customized method parameter binding

问题描述

我正在寻找一种自定义默认的Spring MVC参数绑定的方法。以此方法为例：

I'm looking for a way to customize the default Spring MVC parameter binding. Take this method as an example:

@RequestMapping(value="/index.html")
public ModelAndView doIndex(@RequestParam String param) {
  ...

这很简单，当我有只需要从请求中提取的 String 。但是，我想填充一个更完整的对象，所以我的方法看起来像这样：

This is easy, when I have just a Stringthat I want to extract from the request. However, I want to populate a more complete object, so that my method looks like this:

@RequestMapping(value="/index.html")
public ModelAndView doIndex(Foo bar) {
  ...

我正在寻找的是某种方式来声明这样的绑定;

What I'm looking for is some way to declare a binding like this;

@RequestMapping(value="/index.html")
public ModelAndView doIndex(@FooPopulator Foo bar) {
  ...

还有一些其他类型的实现者（由 @FooPopulator 注释决定）：

And have some other kind of implementor (determined by the @FooPopulator annotation) that does this:

public void doBind(Foo target, ServletRequest originalRequest) {
  target.setX(this.computeStuffBasedOn(originalRequest));
  target.sety(y);
}

到目前为止，我发现了 @

So far I've found out about the @InitBinderbinder annotaion but I'm unsure whether that's really the right choice for this scenarion.

最好的方法是什么？

推荐答案

只是一个快速的谢谢和信息，我找到了正确的解决方案的问题。 Spring已经提供了 WebArgumentResolver 。

just a quick thank you and the info, that I've found the "correct" solution to the problem. Spring already provides the WebArgumentResolver for this scenario.

http://sergialmar.wordpress.com/2011/03/29/extending-handler-method-argument-resolution-in- spring-mvc /

http://scottfrederick.blogspot.com/2011/03/customizing-spring-3-mvcannotation.html

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