Binding request parameters with underscores in Spring MVC 3.0

问题

Consider the following requirement: request parameters have to be bound to objects using Spring MVC 3.0. The request parameters contain underscores (e.g. http://myurl:80/x?param_one=1&param_two=2). These parameters should be bound to the following object:

class MyObject {
    private Integer paramOne;
    private Integer paramTwo;

    ...
}

How would you go about doing this?

Important note: consider that there may be a substantial amount of parameters and objects like this and that it's not considered good practice to define setter methods on the objects that include underscores.

回答1:

Rajith's answer is for controller methods specifically, and doesn't address your question originally asking how to bind underscore parameters to an object.

The hacky solution I currently have in place is to accomplish what you are actually asking is to name my setters in this style:

public void setProject_ids(List<Long> project_ids) {

Note that RequestParam cannot be applied to methods, and it does not have an effect when applied to the argument of this setter.

回答2:

You can do this using @RequestMapping attribute

@RequestParam(value = "param_One") String paramOne,@RequestParam(value = "param_two") String paramTwo

Add this into method signature

But for best practice its better to pass same variable name

来源：https://stackoverflow.com/questions/13253371/binding-request-parameters-with-underscores-in-spring-mvc-3-0