在@RequestParam中绑定列表 [英] Binding a list in @RequestParam

问题描述

我以这种方式从表单发送一些参数：

I'm sending some parameters from a form in this way:

myparam[0]     : 'myValue1'
myparam[1]     : 'myValue2'
myparam[2]     : 'myValue3'
otherParam     : 'otherValue'
anotherParam   : 'anotherValue' 
...

我知道我可以通过添加一个参数来获得控制器方法中的所有参数：

I know I can get all the params in the controller method by adding a parameter like

public String controllerMethod(@RequestParam Map<String, String> params){
    ....
}

我想将参数myParam []（而不是其他的）绑定到一个列表或数组所以我尝试了一个语法如：

I want to bind the parameters myParam[] (not the other ones) to a list or array (anything that keeps the index order), so I've tried with a syntax like:

public String controllerMethod(@RequestParam(value="myParam") List<String> myParams){
    ....
}

public String controllerMethod(@RequestParam(value="myParam") String[] myParams){
    ....
}

但没有一个绑定myParams。即使当我添加一个值到地图，它不能绑定的参数：

but none of them are binding the myParams. Even when I add a value to the map it is not able to bind the params:

public String controllerMethod(@RequestParam(value="myParam") Map<String, String> params){
    ....
}

b $ b

有没有任何语法将一些参数绑定到列表或数组，而不必创建一个对象作为@ModelAttribute与其列表属性？

Is there any syntax to bind some params to a list or array without having to create an object as @ModelAttribute with a list attribute in it?

感谢

推荐答案

@RequestParam 中的数组用于绑定多个参数同名：

Arrays in @RequestParam are used for binding several parameters of the same name:

myparam=myValue1&myparam=myValue2&myparam=myValue3

如果您需要绑定 @ModelAttribute - 索引参数，我想您需要 @ModelAttribute 无论如何。

If you need to bind @ModelAttribute-style indexed parameters, I guess you need @ModelAttribute anyway.

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