spring无法在rest服务中实例化UriInfo [英] spring can't instantiate UriInfo in rest service

问题描述

我尝试使用UriInfo获取请求参数列表，这是我的代码:

I try to use UriInfo to get the list of request parameters, here is my code :

@RestController public class MyController {
@RequestMapping(value = "/documents", produces = MediaType.APPLICATION_JSON_VALUE, method = RequestMethod.GET)
 public Object getDocuments( @Context UriInfo uriInfo,  
 @RequestParam(value    = "sta", required = false) String param1,      @RequestParam(value = "sta2", required   = false) String param2){

  MultivaluedMap<String, String> queryParamList = uriInfo.getQueryParameters();

}

此代码导致此异常: org.springframework.beans.BeanInstantiationException:无法实例化[javax.ws.rs.core.UriInfo]:指定的类是接口

this code cause this exception : org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.ws.rs.core.UriInfo]: Specified class is an interface

感谢帮助

推荐答案

这是因为UriInfo不是Spring MVC对象.它是一个JAX-RS对象，您没有使用JAX-RS，而是使用Spring MVC.使用Spring MVC，如果只需要参数映射，则可以使用@RequestParam

It's because UriInfo isn't a Spring MVC object. It is a JAX-RS object and you are not using JAX-RS, you're using Spring MVC. With Spring MVC, if you just want the parameter map, you can just inject it with @RequestParam

public Object getDocuments(@RequestParam MultiValueMap<String, String> requestParams)

请注意，MultiValueMap是Spring类，而不是JAX-RS MultivaluedMap.

Note, the MultiValueMap is a Spring class, it's not the JAX-RS MultivaluedMap.

另请参见:

• Spring MVC-如何在Spring控制器中获取地图中的所有请求参数?

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