javax.ws.rs.NotFoundException：找不到HTTP 404

Question

以下是web.xml配置文件：

 <?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns="http://xmlns.jcp.org/xml/ns/javaee" 
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee 
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" 
version="3.1">
 <display-name>pgwrapper</display-name>
<servlet>
   <servlet-name>Jersey REST Service</servlet-name>
   <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-
 class>
<init-param>
  <param-name>jersey.config.server.provider.packages</param-name>
  <param-value>com.example.postgres.wrapper</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
 </servlet>
 <servlet-mapping>
  <servlet-name>Jersey REST Service</servlet-name>
  <url-pattern>/rest/*</url-pattern>
</servlet-mapping>
</web-app>

以下是我的ServiceClassProvider.java文件：

 @SuppressWarnings({ "rawtypes", "unchecked" })
 @Path("/pg")
 public class PostgresDBServiceProvider {
      static final String HOST = "select * from host";

     /**
        * @return All Host Ids
        * @throws Exception
     */
     @GET
     @Path("/getAllHostIds")
     @Produces({ MediaType.APPLICATION_XML })
     public static String getAllHostIds() throws Exception {
         List<String> list = new ArrayList<>();
         String hostId = null;;
         ListWrapper listWrapper = new ListWrapper();
         Statement st = PostgresDBConnector.getInstance().createStatement();
         ResultSet rs = st.executeQuery(HOST);
         while (rs.next()) {
             hostId = rs.getString("host_id");
             break;
      }
       return hostId;
     }

Client.java：

   public class PostgresClient {

   @SuppressWarnings("unchecked")
   public static void main(String[] args) throws Exception {
   .......................
   Client client =
        ClientBuilder.newBuilder().withConfig(config)
              .hostnameVerifier(new InsecureHostnameVerifier())
              .sslContext(ctx).build();

  WebTarget target = client.target(getBaseURI());
  String hostIp =
        target.path("rest")
              .path("getAllHostIds").request()
              .accept(MediaType.TEXT_PLAIN).get(String.class);

  System.out.println("hostIp:" + hostIp);

 }

      private static URI getBaseURI() {
     return UriBuilder.fromUri("https://192.168.100.108:8443/pg").build();
  }

 }

在运行客户端时，我收到以下错误：

 Exception in thread "main" javax.ws.rs.NotFoundException: HTTP 404 Not 
 Found

at

 org.glassfish.jersey.client.JerseyInvocation.convertToException(JerseyInvocation.java:1020)
    at org.glassfish.jersey.client.JerseyInvocation.translate(JerseyInvocation.java:819)
    at org.glassfish.jersey.client.JerseyInvocation.access$700(JerseyInvocation.java:92)

我的Tomcat服务器在8443上运行，但是我无法执行这个休息端点，不知道这里错过了哪个配置。需要继续指点。