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java - 如何在 jersey 2(ResourceConfig) 中注册一个对象

转载 作者：行者123 更新时间：2023-11-28 22:11:18 28 4
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我想在 Jersey 中注册一个类组件(对象)而不是类引用。我创建了一个 XYZResource 类，该类由 main() 方法调用，并通过带有 DBI 对象的 Jersey 进行配置。 DAOService daoService 有连接 DBI 连接和执行查询并返回结果的 getDetails()。

我使用 IntelliJ IDE 并运行主类 com.example.Main

当我通过错误点击我的 url http://localhost:9000/resource/test 时 

javax.servlet.ServletException: A MultiException has 1 exceptions.  They are:
1. java.lang.NoSuchMethodException: Could not find a suitable constructor in com.example.AdminResource class.

    org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:392)
    org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:382)
    org.glassfish.jersey.servlet.ServletContainer.doFilter(ServletContainer.java:535)
    org.glassfish.jersey.servlet.ServletContainer.doFilter(ServletContainer.java:483)
    org.glassfish.jersey.servlet.ServletContainer.doFilter(ServletContainer.java:420)
root cause

A MultiException has 1 exceptions.  They are:
1. java.lang.NoSuchMethodException: Could not find a suitable constructor in com.example.AdminResource class.

    org.jvnet.hk2.internal.Collector.throwIfErrors(Collector.java:88)
    org.jvnet.hk2.internal.Utilities.justCreate(Utilities.java:852)
    org.jvnet.hk2.internal.ServiceLocatorImpl.create(ServiceLocatorImpl.java:814)
    org.jvnet.hk2.internal.ServiceLocatorImpl.createAndInitialize(ServiceLocatorImpl.java:906)
    org.jvnet.hk2.internal.ServiceLocatorImpl.createAndInitialize(ServiceLocatorImpl.java:898)
    org.glassfish.jersey.internal.inject.Injections.getOrCreate(Injections.java:174)
    org.glassfish.jersey.server.model.MethodHandler$ClassBasedMethodHandler.getInstance(MethodHandler.java:185)
    org.glassfish.jersey.server.internal.routing.PushMethodHandlerRouter.apply(PushMethodHandlerRouter.java:103)
    org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:128)
    org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:131)
    org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:131)
    org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:131)
    org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:131)
    org.glassfish.jersey.server.internal.routing.RoutingStage.apply(RoutingStage.java:110)
    org.glassfish.jersey.server.internal.routing.RoutingStage.apply(RoutingStage.java:65)
    org.glassfish.jersey.process.internal.Stages.process(Stages.java:197)
    org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:250)
    org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
    org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
    org.glassfish.jersey.internal.Errors.process(Errors.java:315)
    org.glassfish.jersey.internal.Errors.process(Errors.java:297)
    org.glassfish.jersey.internal.Errors.process(Errors.java:267)
    org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:318)
    org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:236)
    org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1010)
    org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:373)
    org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:382)
    org.glassfish.jersey.servlet.ServletContainer.doFilter(ServletContainer.java:535)
    org.glassfish.jersey.servlet.ServletContainer.doFilter(ServletContainer.java:483)
    org.glassfish.jersey.servlet.ServletContainer.doFilter(ServletContainer.java:420)
root cause

java.lang.NoSuchMethodException: Could not find a suitable constructor in com.example.AdminResource class.
    org.glassfish.jersey.internal.inject.JerseyClassAnalyzer.getConstructor(JerseyClassAnalyzer.java:189)
    org.jvnet.hk2.internal.Utilities.getConstructor(Utilities.java:159)
    org.jvnet.hk2.internal.Utilities.justCreate(Utilities.java:850)
    org.jvnet.hk2.internal.ServiceLocatorImpl.create(ServiceLocatorImpl.java:814)
    org.jvnet.hk2.internal.ServiceLocatorImpl.createAndInitialize(ServiceLocatorImpl.java:906)
    org.jvnet.hk2.internal.ServiceLocatorImpl.createAndInitialize(ServiceLocatorImpl.java:898)
    org.glassfish.jersey.internal.inject.Injections.getOrCreate(Injections.java:174)
    org.glassfish.jersey.server.model.MethodHandler$ClassBasedMethodHandler.getInstance(MethodHandler.java:185)
    org.glassfish.jersey.server.internal.routing.PushMethodHandlerRouter.apply(PushMethodHandlerRouter.java:103)
    org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:128)
    org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:131)
    org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:131)
    org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:131)
    org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:131)
    org.glassfish.jersey.server.internal.routing.RoutingStage.apply(RoutingStage.java:110)
    org.glassfish.jersey.server.internal.routing.RoutingStage.apply(RoutingStage.java:65)
    org.glassfish.jersey.process.internal.Stages.process(Stages.java:197)
    org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:250)
    org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
    org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
    org.glassfish.jersey.internal.Errors.process(Errors.java:315)
    org.glassfish.jersey.internal.Errors.process(Errors.java:297)
    org.glassfish.jersey.internal.Errors.process(Errors.java:267)
    org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:318)
    org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:236)
    org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1010)
    org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:373)
    org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:382)
    org.glassfish.jersey.servlet.ServletContainer.doFilter(ServletContainer.java:535)
    org.glassfish.jersey.servlet.ServletContainer.doFilter(ServletContainer.java:483)
    org.glassfish.jersey.servlet.ServletContainer.doFilter(ServletContainer.java:420)

技术使用:

  • Java - 8
  • 嵌入式 tomcat - 8
  • Jersey 2.5.1(REST)
  • JDBI 2.63.1(数据库服务)

主.java

package com.example;

import com.core.db.DAOService;
import com.example.servlets.HelloWorldServlet;
import com.example.util.abc;
import org.apache.catalina.Context;
import org.apache.catalina.LifecycleException;
import org.apache.catalina.startup.Tomcat;
import org.skife.jdbi.v2.DBI;

public class Main {

public static void main (String[] args) {
    Tomcat tomcat = new Tomcat();
    tomcat.setPort(9000);

    String baseDoc = new File("src/main/webapp").getAbsolutePath();
    Context ctx = tomcat.addContext("/servletSample", baseDoc);

    tomcat.addWebapp(null, "", baseDoc);
    tomcat.addServlet(ctx, "HelloWorld", new HelloWorldServlet());
    ctx.addServletMapping("/*", "HelloWorld");

    try { 

        final DBI XYZDBI = new DBI(/*url*/, /*username*/, /*password*/);
        /* DAOService is a class that has function getDetails() that retrive   data from database */
        final DAOService daoService = XYZDBI.onDemand(DAOService.class);
        final org.glassfish.jersey.server.ResourceConfig jerseyResource = new org.glassfish.jersey.server.ResourceConfig();

        /* Register XYZResource class instance with jersey Resouce */
        jerseyResource.register(new XYZResource(daoService));

        tomcat.start();
        } catch (LifecycleException e) {
            e.printStackTrace();
        }

        while (true) {
            try {
                Thread.sleep(5000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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>com.example</groupId>
<artifactId>my-jersey</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>

<build>
    <finalName>my-embed-tomcat</finalName>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>2.5.1</version>
            <inherited>true</inherited>
            <configuration>
                <source>1.7</source>
                <target>1.7</target>
            </configuration>
        </plugin>
    </plugins>
</build>

<dependencies>
   <!-- Dependencies for Jersey Web Application -->
    <dependency>
        <groupId>org.apache.tomcat</groupId>
        <artifactId>tomcat-servlet-api</artifactId>
        <version>7.0.42</version>
    </dependency>
    <dependency>
        <groupId>org.glassfish.jersey.ext</groupId>
        <artifactId>jersey-mvc-jsp</artifactId>
        <version>2.5.1</version>
    </dependency>

   <!-- Dependencies for Embedded Tomcat -->
   <dependency>
       <groupId>org.apache.tomcat.embed</groupId>
       <artifactId>tomcat-embed-core</artifactId>
       <version>8.0.26</version>
   </dependency>
   <dependency>
       <groupId>org.apache.tomcat.embed</groupId>
       <artifactId>tomcat-embed-logging-juli</artifactId>
       <version>8.0.26</version>
   </dependency>
   <dependency>
       <groupId>org.apache.tomcat.embed</groupId>
       <artifactId>tomcat-embed-jasper</artifactId>
       <version>8.0.26</version>
   </dependency>

   <dependency>
       <!--org.skife.jdbi.v2-->
       <groupId>org.jdbi</groupId>
       <artifactId>jdbi</artifactId>
       <version>2.63.1</version>
   </dependency>
   <dependency>
       <groupId>org.slf4j</groupId>
       <artifactId>slf4j-api</artifactId>
       <version>1.7.7</version>
   </dependency>

   <dependency>
       <groupId>com.fasterxml.jackson.dataformat</groupId>
       <artifactId>jackson-dataformat-yaml</artifactId>
       <version>2.8.0.rc2</version>
   </dependency>
   <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-databind</artifactId>
       <version>2.8.3</version>
   </dependency>
   <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-core</artifactId>
       <version>2.8.0.rc2</version>
   </dependency>
   <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-annotations</artifactId>
       <version>2.8.0.rc2</version>
   </dependency>
   <dependency>
       <groupId>microsoft.com</groupId>
       <artifactId>sqlJdbc4</artifactId>
       <version>4.0.2206.100</version>
   </dependency>
   <dependency>
       <groupId>commons-lang</groupId>
       <artifactId>commons-lang</artifactId>
       <version>2.6</version>
   </dependency>
</dependencies>

XYZResource.java

package com.example;

import com.core.db.DAOService;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.base.Optional;
import com.google.common.collect.ImmutableList;
import javax.ws.rs.*;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import java.util.*;

@Path("resource")
public class XYZResource {

    private final DAOService daoService;

    public XYZResource(DAOService daoService) {
        this.daoService = daoService;        
    }

    @GET
    public String helloworld() {
        return "User - Resource";
    }

    @GET
    @Path("/test")
    public Response test() {
        Set<String> User = daoService.getDetails();
        Iterator<String> itr = User.iterator();
        return Response.status(200).entity(itr.next().toString())
                .header("Access-Control-Allow-Origin", "*")
                .header("Access-Control-Allow-Methods", "GET")
                .build();
        }
    }
}

我的应用程序.java

package com.example;

import org.glassfish.jersey.server.ResourceConfig;
import org.glassfish.jersey.server.mvc.jsp.JspMvcFeature;

public class MyApplication extends ResourceConfig {

    public MyApplication() {

        this.packages(MyApplication.class.getPackage().getName()).register(JspMvcFeature.class);
    }
}

网络.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
    <display-name>Jersey Jersey Application</display-name>

    <filter>
        <filter-name>Jersey Application Filter</filter-name>
        <filter-class>org.glassfish.jersey.servlet.ServletContainer</filter-class>
        <init-param>
            <param-name>javax.ws.rs.Application</param-name>
            <param-value>com.example.MyApplication</param-value>
        </init-param>
        <!-- pass to next filter if Jersey/App returns 404 -->
        <init-param>
            <param-name>jersey.config.servlet.filter.forwardOn404</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>

    <filter-mapping>
        <filter-name>Jersey Application Filter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

更新

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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>com.example</groupId>
    <artifactId>jersey-app</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>pom</packaging>

    <build>
        <finalName>my-embed-tomcat</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.5.1</version>
                <inherited>true</inherited>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <properties>
        <tomcat.version>8.0.28</tomcat.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>


   <dependencies>
s
       <dependency>
           <groupId>org.glassfish.jersey.bundles.repackaged</groupId>
           <artifactId>jersey-guava</artifactId>
           <version>2.25.1</version>
       </dependency>

       <!-- Dependencies for Jersey Web Application -->
        <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-servlet-api</artifactId>
            <version>${tomcat.version}</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.ext</groupId>
            <artifactId>jersey-mvc-jsp</artifactId>
            <version>2.5.1</version>
            <exclusions>
                <exclusion>
                    <groupId>javax.servlet</groupId>
                    <artifactId>servlet-api</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
       <dependency>
           <groupId>org.glassfish.jersey.containers</groupId>
           <artifactId>jersey-container-servlet</artifactId>
           <version>2.5.1</version>
       </dependency>
       <!-- Dependencies for Embedded Tomcat -->
       <dependency>
           <groupId>org.apache.tomcat.embed</groupId>
           <artifactId>tomcat-embed-core</artifactId>
           <version>${tomcat.version}</version>
       </dependency>
       <dependency>
           <groupId>org.apache.tomcat.embed</groupId>
           <artifactId>tomcat-embed-logging-juli</artifactId>
           <version>${tomcat.version}</version>
       </dependency>
       <dependency>
           <groupId>org.apache.tomcat.embed</groupId>
           <artifactId>tomcat-embed-jasper</artifactId>
           <version>${tomcat.version}</version>
       </dependency>

       <dependency>
           <!--org.skife.jdbi.v2-->
           <groupId>org.jdbi</groupId>
           <artifactId>jdbi</artifactId>
           <version>2.63.1</version>
       </dependency>
       <dependency>
           <groupId>org.slf4j</groupId>
           <artifactId>slf4j-api</artifactId>
           <version>1.7.7</version>
       </dependency>

       <dependency>
           <groupId>com.fasterxml.jackson.dataformat</groupId>
           <artifactId>jackson-dataformat-yaml</artifactId>
           <version>2.8.0.rc2</version>
       </dependency>
       <dependency>
           <groupId>com.fasterxml.jackson.core</groupId>
           <artifactId>jackson-databind</artifactId>
           <version>2.8.3</version>
       </dependency>
       <dependency>
           <groupId>com.fasterxml.jackson.core</groupId>
           <artifactId>jackson-core</artifactId>
           <version>2.8.0.rc2</version>
       </dependency>
       <dependency>
           <groupId>com.fasterxml.jackson.core</groupId>
           <artifactId>jackson-annotations</artifactId>
           <version>2.8.0.rc2</version>
       </dependency>
       <dependency>
           <groupId>microsoft.com</groupId>
           <artifactId>sqlJdbc4</artifactId>
           <version>4.0.2206.100</version>
       </dependency>
       <dependency>
           <groupId>commons-lang</groupId>
           <artifactId>commons-lang</artifactId>
           <version>2.6</version>
       </dependency>
    </dependencies>

</project>

主.java

package com.example;

import org.apache.catalina.Context;
import org.apache.catalina.servlets.DefaultServlet;
import org.apache.catalina.startup.Tomcat;
import org.apache.tomcat.util.descriptor.web.FilterDef;
import org.apache.tomcat.util.descriptor.web.FilterMap;
import org.glassfish.jersey.server.ResourceConfig;
import org.glassfish.jersey.server.mvc.jsp.JspMvcFeature;
import org.glassfish.jersey.servlet.ServletContainer;
import org.glassfish.jersey.servlet.ServletProperties;

import javax.servlet.Filter;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import java.io.File;

/**
 * @author Paul Samsotha.
 */
public class Main {

    public static void main(String... args) throws Exception {
        Tomcat tomcat = new Tomcat();
        tomcat.setPort(9000);

        File base = new File(".");
        Context context = tomcat.addContext("", base.getAbsolutePath());

        Tomcat.addServlet(context, "default", new DefaultServlet());
        context.addServletMapping("/*", "default");

        final FilterDef def = new FilterDef();
        final FilterMap map = new FilterMap();

        def.setFilterName("jerseyFilter");
        def.setFilter(getJerseyFilter());
        context.addFilterDef(def);

        map.setFilterName("jerseyFilter");
        map.addURLPattern("/api/*");
        context.addFilterMap(map);

        tomcat.start();

        while (true) {
            try {
                Thread.sleep(5000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    private static Filter getJerseyFilter() {
        final ResourceConfig config = new ResourceConfig()
                .register(new HelloResource(new Service()))
                .register(JspMvcFeature.class)
                .property(ServletProperties.FILTER_FORWARD_ON_404, true);
        return new ServletContainer(config);
    }

    public static class Service {
        public String getMessage() {
            return "Hello Tomcat!";
        }
    }

    @Path("tomcat")
    public static class HelloResource {
        private final Service service;

        public HelloResource (Service service) {
            this.service = service;
        }

        @GET
        public String get() {
            return this.service.getMessage();
        }
    }
}

最佳答案

你似乎有很多不必要的事情在进行。您有两种不同的配置。选一个。问题是由包扫描引起的，它正在拾取资源并尝试注册它。

只需删除 web.xml 和 MyApplication 并使用您当前在主类中使用的 ResourceConfig。然后您可以使用 Jersey 的 ServletContainer 以编程方式注册 servlet。它既是一个 Filter 又是一个 HttpServlet。因此，您不需要 web.xml 将 Jersey 配置为 Filter。 ServletContainer 已经是一个 Filter

new SevletContainer(youResourceConfig);

我不太熟悉嵌入式 Tomcat，所以我不能说如何注册过滤器，但我相信快速搜索会找到答案。只需将 ServletContainer 注册为过滤器即可。

jersey.config.servlet.filter.forwardOn404 初始化参数也可以配置过滤器注册。或者您可以使用 ResourceConfig 及其 property 方法对其进行配置

resourceConfig.property("jersey.config.servlet.filter.forwardOn404", true);

或者更好的是，使用 the constant 

property(ServletProperties.FILTER_FORWARD_ON_404, true);

更新

这是一个完整的有效设置(基于您的示例)。

import org.apache.catalina.Context;
import org.apache.catalina.servlets.DefaultServlet;
import org.apache.catalina.startup.Tomcat;
import org.apache.tomcat.util.descriptor.web.FilterDef;
import org.apache.tomcat.util.descriptor.web.FilterMap;
import org.glassfish.jersey.server.ResourceConfig;
import org.glassfish.jersey.server.mvc.jsp.JspMvcFeature;
import org.glassfish.jersey.servlet.ServletContainer;
import org.glassfish.jersey.servlet.ServletProperties;

import javax.servlet.Filter;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import java.io.File;

/**
 * @author Paul Samsotha.
 */
public class Main {

    public static void main(String... args) throws Exception {
        Tomcat tomcat = new Tomcat();
        tomcat.setPort(9000);

        File base = new File(".");
        Context context = tomcat.addContext("", base.getAbsolutePath());

        Tomcat.addServlet(context, "default", new DefaultServlet());
        context.addServletMapping("/*", "default");

        final FilterDef def = new FilterDef();
        final FilterMap map = new FilterMap();

        def.setFilterName("jerseyFilter");
        def.setFilter(getJerseyFilter());
        context.addFilterDef(def);

        map.setFilterName("jerseyFilter");
        map.addURLPattern("/api/*");
        context.addFilterMap(map);

        tomcat.start();

        while (true) {
            try {
                Thread.sleep(5000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    private static Filter getJerseyFilter() {
        final ResourceConfig config = new ResourceConfig()
                .register(new HelloResource(new Service()))
                .register(JspMvcFeature.class)
                .property(ServletProperties.FILTER_FORWARD_ON_404, true);
        return new ServletContainer(config);
    }

    public static class Service {
        public String getMessage() {
            return "Hello Tomcat!";
        }
    }

    @Path("tomcat")
    public static class HelloResource {
        private final Service service;

        public HelloResource (Service service) {
            this.service = service;
        }

        @GET
        public String get() {
            return this.service.getMessage();
        }
    }
}

我做了一些改变:

  1. 不确定您为什么要使用 Tomcat 7 Servlet API。我将其更改为您的其他 Tomcat 依赖项的 8.x 版本。

  2. 我还从 Jersey MVC 依赖项中排除了 Servlet API，因为它引入了较旧的 2.4 Servlet API

    <dependency>
        <groupId>org.glassfish.jersey.ext</groupId>
        <artifactId>jersey-mvc-jsp</artifactId>
        <exclusions>
            <exclusion>
                <groupId>javax.servlet</groupId>
                <artifactId>servlet-api</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

  3. 我添加了一个 DefaultServlet 来处理页面。从测试来看(同样我不是 Tomcat 专家)，似乎 this is required

通过示例，您应该能够获取

http://localhost:9000/api/tomcat

关于java - 如何在 jersey 2(ResourceConfig) 中注册一个对象，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/42855971/

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