java - Spring MVC 缺少矩阵变量

Question

我正在尝试使用 SpringMVC(来自 Spring boot 1.2.3.RELEASE)将矩阵参数(或矩阵变量)添加到我的 Rest Controller这是我的代码:

@RestController
public class SubAgentsController {

    @RequestMapping(value = "/{subagents}", method = RequestMethod.GET)
    public SubAgent subAgents(@MatrixVariable(value="agentName", pathVar="subagents") String agentName) {
        System.out.println(agentName);
    }
}

不幸的是，当我试图获得: http://localhost:8080/subagents;agentName=hello

这是我收到的答案:

There was an unexpected error (type=Bad Request, status=400).

Missing matrix variable 'agentName' for method parameter of type String

我做错了什么？根据http://docs.spring.io/spring-framework/docs/3.2.0.M2/reference/html/mvc.html那应该有效:-(

感谢您的回答!

Answer 1

在 Spring Boot 应用程序中，为了启用 Matrix 变量，您需要定义以下覆盖代码

@Configuration
public class WebConfig extends WebMvcConfigurerAdapter {

    @Override
    public void configurePathMatch(PathMatchConfigurer configurer) {
        UrlPathHelper urlPathHelper = new UrlPathHelper();
        urlPathHelper.setRemoveSemicolonContent(false);
        configurer.setUrlPathHelper(urlPathHelper);
    }
}

否则，默认情况下它们是禁用的