cn.edu.zju.bigdata.controller.JerseyController.java Source code

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Here is the source code for cn.edu.zju.bigdata.controller.JerseyController.java

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/*
 * Copyright 2012-2015 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package cn.edu.zju.bigdata.controller;

import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;

import javax.validation.constraints.NotNull;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.HEAD;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.Response;

import org.reflections.Reflections;
import org.springframework.stereotype.Component;

//import com.qmino.miredot.annotations.ReturnType;

@Component
@Path("/api")
public class JerseyController {

    @GET
    @Path("/_list")
    @Produces({ "application/json" })
    //@ReturnType("java.lang.List<String>")
    public Response listAPI() {

        List<String> apiList = new ArrayList<String>();

        Reflections reflections = new Reflections("cn.edu.zju.bigdata.controller");

        Set<Class<?>> allClasses = reflections.getTypesAnnotatedWith(Path.class);

        for (Class<?> controller : allClasses) {
            String apiPath = controller.getAnnotation(Path.class).value();
            for (Method method : controller.getMethods()) {
                // Filter the API with the @RequestMapping Annotation
                String apiMethod = method.isAnnotationPresent(GET.class) ? "GET"
                        : method.isAnnotationPresent(POST.class) ? "POST"
                                : method.isAnnotationPresent(PUT.class) ? "PUT"
                                        : method.isAnnotationPresent(DELETE.class) ? "DELETE"
                                                : method.isAnnotationPresent(HEAD.class) ? "HEAD" : null;
                if (apiMethod == null)
                    continue;

                if (method.isAnnotationPresent(Path.class))
                    apiPath += method.getAnnotation(Path.class).value();

                // Filter out /_list itself
                if (apiPath.equals("/_list"))
                    continue;

                apiList.add(apiMethod + " " + apiPath);
            }
        }

        return Response.ok().entity(apiList).build();
    }

    @GET
    @Path("/reverse")
    public Response reverse(@QueryParam("input") @NotNull String input) {
        return Response.ok().entity(new StringBuilder(input).reverse().toString()).build();
    }

    @GET
    @Path("/hello/{name}")
    public Response greet(@PathParam("name") @NotNull String name) {
        return Response.ok().entity("Hello, " + name).build();
    }
}