Question

是否可以在Java应用程序中独立安装Jersey REST服务？我发现的每个示例都是在web容器（web.xml）的上下文中。

感谢帮助！

Answer 1

只需遵循Jersey docs getting started。它使用Grizzly服务器创建一个独立的服务器。使用Maven，您可以使用以下原型命令轻松创建它。

mvn archetype:generate -DarchetypeArtifactId=jersey-quickstart-grizzly2 \
-DarchetypeGroupId=org.glassfish.jersey.archetypes -DinteractiveMode=false \
-DgroupId=com.example -DartifactId=simple-service -Dpackage=com.example \
-DarchetypeVersion=2.27

最后一个参数-DarchetypeVersion可以替换为所需的任何2.x版本。当前，最新值为2.27。

运行此命令后，您将具有从命令行运行的生成的主类。

另一种方法是使用Spring Boot（很多人正在使用），您可以签出the official example并签出the docs

更新

如果您不使用Maven，则以下是所有使用原型插入的jar。大多数都包含在Jersey RI bundle you download from the docs中。只需找出捆绑包中没有的那些，然后搜索它们即可。

我认为RI捆绑包DL中未包含的是

灰熊框架
grizzly-http
grizzly-http-server
jersey-container-grizzly2-http

这是所有从原型生成的类。

com.example.MyResource

package com.example;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

/**
 * Root resource (exposed at "myresource" path)
 */
@Path("myresource")
public class MyResource {

    /**
     * Method handling HTTP GET requests. The returned object will be sent
     * to the client as "text/plain" media type.
     *
     * @return String that will be returned as a text/plain response.
     */
    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String getIt() {
        return "Got it!";
    }
}

com.example.Main

package com.example;

import org.glassfish.grizzly.http.server.HttpServer;
import org.glassfish.jersey.grizzly2.httpserver.GrizzlyHttpServerFactory;
import org.glassfish.jersey.server.ResourceConfig;

import java.io.IOException;
import java.net.URI;

/**
 * Main class.
 *
 */
public class Main {
    // Base URI the Grizzly HTTP server will listen on
    public static final String BASE_URI = "http://localhost:8080/myapp/";

    /**
     * Starts Grizzly HTTP server exposing JAX-RS resources defined in this application.
     * @return Grizzly HTTP server.
     */
    public static HttpServer startServer() {
        // create a resource config that scans for JAX-RS resources and providers
        // in com.example package
        final ResourceConfig rc = new ResourceConfig().packages("com.example");

        // create and start a new instance of grizzly http server
        // exposing the Jersey application at BASE_URI
        return GrizzlyHttpServerFactory.createHttpServer(URI.create(BASE_URI), rc);
    }

    /**
     * Main method.
     * @param args
     * @throws IOException
     */
    public static void main(String[] args) throws IOException {
        final HttpServer server = startServer();
        System.out.println(String.format("Jersey app started with WADL available at "
                + "%sapplication.wadl\nHit enter to stop it...", BASE_URI));
        System.in.read();
        server.stop();
    }
}

（测试）com.example.MyResourceTest

package com.example;

import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.WebTarget;

import org.glassfish.grizzly.http.server.HttpServer;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.assertEquals;

public class MyResourceTest {

    private HttpServer server;
    private WebTarget target;

    @Before
    public void setUp() throws Exception {
        // start the server
        server = Main.startServer();
        // create the client
        Client c = ClientBuilder.newClient();

        // uncomment the following line if you want to enable
        // support for JSON in the client (you also have to uncomment
        // dependency on jersey-media-json module in pom.xml and Main.startServer())
        // --
        // c.configuration().enable(new org.glassfish.jersey.media.json.JsonJaxbFeature());

        target = c.target(Main.BASE_URI);
    }

    @After
    public void tearDown() throws Exception {
        server.stop();
    }

    /**
     * Test to see that the message "Got it!" is sent in the response.
     */
    @Test
    public void testGetIt() {
        String responseMsg = target.path("myresource").request().get(String.class);
        assertEquals("Got it!", responseMsg);
    }
}

Java Jersey 2：独立吗？

1 个答案:

更新