SpringFramework手动注册RequestMapping API

package portal.configure;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.http.HttpStatus;
import org.springframework.social.connect.web.HttpSessionSessionStrategy;
import org.springframework.social.connect.web.SessionStrategy;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.context.request.ServletWebRequest;
import org.springframework.web.filter.OncePerRequestFilter;
import org.springframework.web.servlet.mvc.method.RequestMappingInfo;
import org.springframework.web.servlet.mvc.method.RequestMappingInfoHandlerMapping;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;


@Configuration
@ConditionalOnExpression("${auth.isEnable : false}")
public class RequestMappingConfiguration {

    private SessionStrategy sessionStrategy = new HttpSessionSessionStrategy();

    @Autowired
    public void setRequestMapping(RequestMappingInfoHandlerMapping mapping)
            throws NoSuchMethodException {
        mapping.registerMapping(RequestMappingInfo
                .paths("/api/test").methods(RequestMethod.GET).build(), this, this.getClass().getMethod("reqMethod", HttpServletRequest.class, HttpServletResponse.class));
    }

    public void reqMethod(HttpServletRequest request, HttpServletResponse response) throws Exception {
        sessionStrategy.setAttribute(new ServletWebRequest(request), "userCode", "admin");
        response.setStatus(HttpStatus.OK.value());
        response.setCharacterEncoding("utf-8");
        response.setContentType (  "application/json; charset=utf-8");
        PrintWriter printWriter = response.getWriter();
        printWriter.write("{ \"status\":"+HttpStatus.OK.value()+", \"desc\":\""+ "api接口调用成功!" +"\"}");
        printWriter.flush();
    }

    @Bean
    @Primary
    public FilterRegistrationBean myFilterRegistration() {
        FilterRegistrationBean registration = new FilterRegistrationBean();
        registration.setFilter(new OncePerRequestFilter() {
            @Override
            protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
                String origin = request.getHeader("origin");
                if (StringUtils.isEmpty(origin)) {
                    origin = "*";
                }
                response.setHeader("Access-Control-Allow-Origin", origin);
                response.setHeader("Access-Control-Allow-Credentials", "true");

                filterChain.doFilter(request, response);
            }
        });
        registration.addUrlPatterns("/api");

        return registration;
    }

}

[www@localhost ~]$ curl http://127.0.0.1:8080/api/test
{ "status":200, "desc":"api接口调用成功!"}