使用多个通配符的java请求映射

Question

我想要两个端点在@RequestMapping中有通配符

@RequestMapping(value="/**", method = { RequestMethod.GET}, produces = "application/json")

@RequestMapping(value="/**/versions/{versionId}", method = { RequestMethod.GET}, produces = "application/json")

当我执行一个应该转到/**/versions/{versionId}的请求时，它更喜欢/**端点而不是/**/versions/{versionId}端点，即使请求应该匹配

我正在使用：

<parent>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-parent</artifactId>
    <version>Brixton.SR2</version>
</parent>

Answer 1

如果您想要相当复杂的请求映射，请尝试覆盖HandlerRequest，因为它在这里：How to define RequestMapping prioritization 你可以：

if (urlPath.contains("/versions")) {
    /* forward to method with @RequestMapping(value="/get/versions/{versionId}")
}

而不是：

@RequestMapping(value="/**/versions/{versionId}", method = { RequestMethod.GET}, produces = "application/json")

使用：

@RequestMapping(value="/response_for_versions/{versionId}", method = { RequestMethod.GET}, produces = "application/json")

现在所有“../versions/{versionId}”都应该转发给“/response_for_versions/{versionId}”，其他所有的都将由“/**”处理

Answer 2

我认为你只需要改变@RequestMapping方法的顺序

对于我来说，工作http://localhost:8080/versions/1返回version 1

对于没有version/{versionId}的任何其他请求，它返回index

@Controller
public class DemoController {

    @RequestMapping(value="/**/versions/{versionId}", method = RequestMethod.GET)
    @ResponseBody
    public String version(@PathVariable String versionId){
        return "version " + versionId;
    }

    @RequestMapping(value="/**", method = RequestMethod.GET)
    @ResponseBody
    public String index(){
        return "index";
    }
}