当应用程序打包到 jar 时，Jetty 无法定位 REST 类

Question

当我直接在 Eclipse 中启动带有嵌入式 Jetty 服务器的应用程序时，我可以访问我的 REST API，例如在 "localhost:8082/getModules" 上，一切正常。但是，如果我从我的应用程序创建 jar-with-dependencies，在我导航到 "localhost:8082/getModules" 之后，我得到

HTTP 错误：404 访问 /database/getModules 时出现问题原因：未找到

我发现控制台登录，当 GET 请求到来时显示，它说找不到 servlet 容器，然后响应设置为 HTTP 404 未找到：

org.glassfish.jersey.servlet.ServletContainer-3e755a96@ca8ad067==org.glassfish.jersey.servlet.ServletContainer,-1,true

我认为问题出在 getJersey() 方法的某处：

public void init() throws Exception {
    server = new Server(8082);
    final HandlerList handlers = new HandlerList();
    handlers.addHandler(getJersey()); 
    server.setHandler(handlers);
    server.start();
}

private Handler getJersey() {
    ServletContextHandler context = 
        new ServletContextHandler(ServletContextHandler.SESSIONS);
    context.setContextPath("/");

    ProtectionDomain domain = this.getClass().getProtectionDomain();
    String location = domain.getCodeSource().getLocation().toString();
    context.setResourceBase(location);

    final ResourceConfig resourceConfig = new ResourceConfig().
        register(GensonCustomResolver.class).packages(true,
        new String[] {"org.iot.gateway.modules.DatabaseWebInterfaceModule.rest"});
    ServletContainer servletContainer = new ServletContainer(resourceConfig);
    context.addServlet(new ServletHolder(servletContainer), "/*");     
    return context;
}

或者问题出在 pom.xml:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>IoT</groupId>
  <artifactId>DatabaseWebInterfaceModule</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>DatabaseWebInterfaceModule</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

    <build>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-assembly-plugin</artifactId>
                <configuration>
                    <archive>
                        <manifest>
                        </manifest>
                    </archive>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id> <!-- this is used for inheritance merges -->
                        <phase>package</phase> <!-- bind to the packaging phase -->
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

  <dependencies>

    <dependency>
        <groupId>commons-cli</groupId>
        <artifactId>commons-cli</artifactId>
        <version>1.2</version>
    </dependency>
    <dependency>
        <groupId>org.reflections</groupId>
        <artifactId>reflections-maven</artifactId>
        <version>0.9.9-RC2</version>
    </dependency>  
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.1.0</version>
    </dependency>
    <dependency>
        <groupId>org.glassfish.jersey.ext</groupId>
        <artifactId>jersey-metainf-services</artifactId>
        <version>2.16</version>
    </dependency>
    <dependency>
        <groupId>javax.validation</groupId>
        <artifactId>validation-api</artifactId>
        <version>1.1.0.Final</version>
    </dependency>
    <dependency>
        <groupId>javax.persistence</groupId>
        <artifactId>persistence-api</artifactId>
        <version>1.0.2</version>
    </dependency>
    <dependency>
        <groupId>javax.ws.rs</groupId>
        <artifactId>javax.ws.rs-api</artifactId>
        <version>2.0.1</version>
    </dependency>
    <dependency>
        <groupId>com.google.guava</groupId>
        <artifactId>guava</artifactId>
        <version>18.0</version>
    </dependency>
    <dependency>
        <groupId>com.owlike</groupId>
        <artifactId>genson</artifactId>
        <version>1.2</version>
    </dependency>
    <dependency>
        <groupId>de.ruedigermoeller</groupId>
        <artifactId>fst</artifactId>
        <version>2.24</version>
    </dependency>
    <dependency>
      <groupId>com.sun.jersey</groupId>
      <artifactId>jersey-servlet</artifactId>
      <version>1.13</version>
    </dependency>

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
     <dependency>
        <groupId>IoT</groupId>
        <artifactId>Modules</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.7.13</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>jcl-over-slf4j</artifactId>
        <version>1.7.7</version>
    </dependency>
    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-classic</artifactId>
        <version>1.1.2</version>
    </dependency>
    <dependency>
        <groupId>org.eclipse.jetty</groupId>
        <artifactId>jetty-webapp</artifactId>
        <version>9.2.9.v20150224</version>
    </dependency>
    <dependency>
        <groupId>org.eclipse.jetty</groupId>
        <artifactId>jetty-servlets</artifactId>
        <version>9.2.9.v20150224</version>
    </dependency>
    <dependency>
        <groupId>org.eclipse.jetty</groupId>
        <artifactId>jetty-util</artifactId>
        <version>9.2.9.v20150224</version>
    </dependency>
    <dependency>
        <groupId>org.eclipse.jetty</groupId>
        <artifactId>jetty-servlet</artifactId>
        <version>9.2.9.v20150224</version>
    </dependency>
    <dependency>
        <groupId>org.eclipse.jetty</groupId>
        <artifactId>jetty-server</artifactId>
        <version>9.2.9.v20150224</version>
    </dependency>
    <dependency>
        <groupId>org.eclipse.jetty</groupId>
        <artifactId>jetty-security</artifactId>
        <version>9.2.9.v20150224</version>
    </dependency>
    <dependency>
        <groupId>org.eclipse.jetty</groupId>
        <artifactId>jetty-io</artifactId>
        <version>9.2.9.v20150224</version>
    </dependency>
    <dependency>
        <groupId>org.eclipse.jetty</groupId>
        <artifactId>jetty-http</artifactId>
        <version>9.2.9.v20150224</version>
    </dependency>
    <dependency>
        <groupId>org.eclipse.jetty</groupId>
        <artifactId>jetty-continuation</artifactId>
        <version>9.2.9.v20150224</version>
    </dependency>
    <dependency>
        <groupId>org.eclipse.jetty</groupId>
        <artifactId>jetty-annotations</artifactId>
        <version>9.2.9.v20150224</version>
    </dependency>
        <dependency>
        <groupId>org.glassfish.jersey.core</groupId>
        <artifactId>jersey-server</artifactId>
        <version>2.16</version>
    </dependency>
    <dependency>
        <groupId>org.glassfish.jersey.containers</groupId>
        <artifactId>jersey-container-servlet</artifactId>
        <version>2.16</version>
    </dependency>
    <dependency>
        <groupId>org.glassfish.jersey.containers</groupId>
        <artifactId>jersey-container-servlet-core</artifactId>
        <version>2.16</version>
    </dependency>
    <dependency>
        <groupId>joda-time</groupId>
        <artifactId>joda-time</artifactId>
        <version>2.7</version>
    </dependency>
    <dependency>
        <groupId>org.mongodb</groupId>
        <artifactId>mongo-java-driver</artifactId>
        <version>3.0.4</version>
    </dependency>
    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpcore</artifactId>
        <version>4.4</version>
    </dependency>
    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>4.4</version>
    </dependency>
  </dependencies>
</project>

那么我怎样才能正确设置 link 与我的休息类打包？

Answer 1

我解决了！

在我的 getJersey() 方法中，我替换了

final ResourceConfig resourceConfig = new ResourceConfig().
    register(GensonCustomResolver.class).packages(true,
    new String[] {"org.iot.gateway.modules.DatabaseWebInterfaceModule.rest"});

和

    ResourceConfig resourceConfig = new ResourceConfig();
    resourceConfig.register(org.iot.gateway.modules.DatabaseWebInterfaceModule.rest.RestTest.class);
    resourceConfig.register(org.iot.gateway.modules.DatabaseWebInterfaceModule.rest.WebRequestHandler.class);

因此，我没有加载包含我的 REST classes 的整个包，而是添加了单独处理我的 REST 请求的每个 class

当应用程序打包到 jar 时，Jetty 无法定位 REST 类

Jetty can't locate REST classes when application is packed to jar

maven

jetty

embedded-jetty

maven-assembly-plugin

jar-with-dependencies