sample.jersey.RestEndpoint.java Source code

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Here is the source code for sample.jersey.RestEndpoint.java

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/*
 * Copyright 2012-2016 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 sample.jersey;

import java.util.Collections;
import java.util.Map;

import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

import org.springframework.stereotype.Component;

@Component
@Path("/")
public class RestEndpoint {

    @GET
    @Path("hello")
    @Produces(MediaType.APPLICATION_JSON)
    public Response hello() {
        return Response.ok(Collections.singletonMap("message", "Hello World!")).build();
    }

    @GET
    @Path("add")
    @Produces(MediaType.APPLICATION_JSON)
    public Response add(@QueryParam("a") int a, @QueryParam("b") int b) {
        Integer integerA = 0;
        Integer integerB = 0;
        try {
            integerA = Integer.valueOf(a);
            integerB = Integer.valueOf(b);
        } catch (NumberFormatException e) {
            return Response.status(Response.Status.BAD_REQUEST)
                    .entity(Collections.singletonMap("errorMessage", "query params a & b should be integers"))
                    .build();
        }
        return Response.ok(Collections.singletonMap("sum", integerA + integerB)).build();
    }

    @POST
    @Path("multiply")
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    public Response multiply(Map<String, Object> request) {
        Integer a = (Integer) request.get("a");
        Integer b = (Integer) request.get("b");

        if (a == null || b == null) {
            return Response.status(Response.Status.BAD_REQUEST).entity(Collections.singletonMap("errorMessage",
                    "request JSON should contain two numbers, with keys a & b")).build();
        }
        return Response.ok(Collections.singletonMap("product", a + b)).build();
    }
}