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记一次整合Spring Boot和Jersey的坑

记一次整合Spring Boot和Jersey的坑

作者: WalterWong | 来源:发表于2017-10-10 15:43 被阅读466次

    最近在做微服务方面的开发，技术选型为Spring Cloud+ Jersey。但在整合过程中还是遇到了一个比较大的坑。
    创建工程略过 。。。

    1、依赖

    pom文件主要内容如下

        <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>
        <!-- 使用jersey RESTful 框架 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jersey</artifactId>
        </dependency>
    </dependencies>

    2、微服务Spring boot入口

    package com.makeronly;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

/**
 * @author Walter
 */
@EnableDiscoveryClient
@SpringBootApplication
public class Application{

    public static void main(String[] args){
        SpringApplication.run(Application.class, args);
    }
}

    3、创建Jersey配置

    package com.makeronly.config;

import org.glassfish.jersey.server.ResourceConfig;
import org.springframework.stereotype.Component;

@Component
public class JerseyConfig extends ResourceConfig {
    /**
     * 扫描com.makeronly包，使其识别JAX-RS注解
     */
    public JerseyConfig() {
        packages("com.makeronly");
    }
}

    4、Restful 访问入口

    package com.makeronly.user;

import org.springframework.stereotype.Component;
import javax.ws.rs.GET;
import javax.ws.rs.Path;

@Component
@Path("/user")
public class UserResource {
    @GET
    @Path("/info")
    public String getUserInfo(){
        return "Hello World";
    }
}

    5、访问

    启动工程，访问 http://localhost:2001/user/info，按照预期的话，浏览器应会显示 Hello World
    遗憾的是程序没能按照我们的预期运行，还是出现了一个大坑

    java.lang.NoSuchMethodError: javax.ws.rs.core.Application.getProperties()Ljava/util/Map;
    at org.glassfish.jersey.server.ApplicationHandler.<init>(ApplicationHandler.java:331) ~[jersey-server-2.25.1.jar:na]
    at org.glassfish.jersey.servlet.WebComponent.<init>(WebComponent.java:392) ~[jersey-container-servlet-core-2.25.1.jar:na]
    at org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:177) ~[jersey-container-servlet-core-2.25.1.jar:na]
    at org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:369) ~[jersey-container-servlet-core-2.25.1.jar:na]
    at javax.servlet.GenericServlet.init(GenericServlet.java:158) ~[tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1183) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:795) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:133) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1457) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_144]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_144]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at java.lang.Thread.run(Thread.java:748) [na:1.8.0_144]

2017-10-10 15:29:43.480 ERROR 11236 --- [nio-2001-exec-1] o.a.c.c.C.[.[.[.[.m.c.JerseyConfig]      : Allocate exception for servlet [com.makeronly.config.JerseyConfig]

java.lang.NoSuchMethodError: javax.ws.rs.core.Application.getProperties()Ljava/util/Map;
    at org.glassfish.jersey.server.ApplicationHandler.<init>(ApplicationHandler.java:331) ~[jersey-server-2.25.1.jar:na]
    at org.glassfish.jersey.servlet.WebComponent.<init>(WebComponent.java:392) ~[jersey-container-servlet-core-2.25.1.jar:na]
    at org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:177) ~[jersey-container-servlet-core-2.25.1.jar:na]
    at org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:369) ~[jersey-container-servlet-core-2.25.1.jar:na]
    at javax.servlet.GenericServlet.init(GenericServlet.java:158) ~[tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1183) ~[tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:795) ~[tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:133) ~[tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1457) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_144]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_144]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.20.jar:8.5.20]
    at java.lang.Thread.run(Thread.java:748) [na:1.8.0_144]

    就是这么个坑，让我陷里面足足两天时间，各种搜索都找不到答案，后来终于找到了一篇文章http://blog.csdn.net/optixleung/article/details/51280032
    看过之后才发现，是JAX-RS 1 和 JAX-RS 2 的jar包同时存在于classpath下导致的，后来在GitHub上找到了问题的根本。
    Eureka Client依赖于JAX-RS 1，而Jersey依赖JAX-RS 2，因此我们需要将升级Eureka Client的依赖，使其不再依赖JAX-RS 1。修改配置文件

        <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
            <exclusions>
                <exclusion>
                    <artifactId>jsr311-api</artifactId>
                    <groupId>javax.ws.rs</groupId>
                </exclusion>
            </exclusions>
        </dependency>
        <!-- 使用jersey RESTful 框架 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jersey</artifactId>
        </dependency>
    </dependencies>

    重启访问，终于出现了思念已久的
    Hello World

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