Spring MVC 自定义方法参数绑定 [英] Spring MVC customized method parameter binding
问题描述
我正在寻找一种自定义默认 Spring MVC 参数绑定的方法.以这个方法为例:
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) {
...
这很容易，当我只有一个 String 想要从请求中提取时.但是，我想填充一个更完整的对象，以便我的方法如下所示:
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器(由 @FooPopulator 注释确定)来执行此操作:
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，我已经了解了 @InitBinderbinder 注释，但我不确定这是否真的适合这种情况.
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
感谢您和我找到了问题的正确"解决方案的信息.Spring 已经提供了 WebArgumentResolver 用于此场景.
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://scottfrederick.blogspot.com/2011/03/customizing-spring-3-mvcannotation.html
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