无法创建 AsynchronousJiraRestClientFactory（依赖问题）

Question

我之前用 Java 制作了一个 restful 客户端应用程序来大规模处理票证并加快工作流程，但是，我想创建一个更全面的应用程序，它利用实际的 JIRA api 而不是在我自己的解决方案中解析 JSON。 我有一个非常简单的代码块来创建客户端：

public class SimpleMain {
  public static void main(String[] args) {
    try {
      JiraRestClient client = new AsynchronousJiraRestClientFactory()
        .createWithBasicHttpAuthentication(new URI("https://jira.redacted.com"), "redacted", "redacted");
    } catch (URISyntaxException e) {
      e.printStackTrace();
    }
  }
}

尝试创建简单的 AsynchronousJiraRestClientFactory 会导致以下异常：

15:12:06.625 [main] DEBUG c.a.j.r.c.i.a.AsynchronousHttpClientFactory$MavenUtils - Could not find version for maven artifact com.atlassian.jira:jira-rest-java-com.atlassian.jira.rest.client
15:12:06.633 [main] DEBUG c.a.j.r.c.i.a.AsynchronousHttpClientFactory$MavenUtils - Got the following exception
java.lang.NullPointerException: null
at java.util.Properties$LineReader.readLine(Properties.java:434) ~[na:1.8.0_51]
at java.util.Properties.load0(Properties.java:353) ~[na:1.8.0_51]
at java.util.Properties.load(Properties.java:341) ~[na:1.8.0_51]
at com.atlassian.jira.rest.client.internal.async.AsynchronousHttpClientFactory$MavenUtils.getVersion(AsynchronousHttpClientFactory.java:158) ~[jira-rest-java-client-core-3.0.0.jar:na]
at com.atlassian.jira.rest.client.internal.async.AsynchronousHttpClientFactory$RestClientApplicationProperties.getVersion(AsynchronousHttpClientFactory.java:121) [jira-rest-java-client-core-3.0.0.jar:na]
at com.atlassian.httpclient.apache.httpcomponents.DefaultHttpClient.getUserAgent(DefaultHttpClient.java:168) [atlassian-httpclient-apache-httpcomponents-0.13.2.jar:na]
at com.atlassian.httpclient.apache.httpcomponents.DefaultHttpClient.<init>(DefaultHttpClient.java:139) [atlassian-httpclient-apache-httpcomponents-0.13.2.jar:na]
at com.atlassian.jira.rest.client.internal.async.AsynchronousHttpClientFactory.createClient(AsynchronousHttpClientFactory.java:53) [jira-rest-java-client-core-3.0.0.jar:na]
at com.atlassian.jira.rest.client.internal.async.AsynchronousJiraRestClientFactory.create(AsynchronousJiraRestClientFactory.java:35) [jira-rest-java-client-core-3.0.0.jar:na]
at com.atlassian.jira.rest.client.internal.async.AsynchronousJiraRestClientFactory.createWithBasicHttpAuthentication(AsynchronousJiraRestClientFactory.java:42) [jira-rest-java-client-core-3.0.0.jar:na]
at jiratest.SimpleMain.main(SimpleMain.java:13) [classes/:na]
Exception in thread "main" java.lang.NoSuchMethodError: org.apache.http.nio.client.HttpAsyncClient.start()V
at com.atlassian.httpclient.apache.httpcomponents.DefaultHttpClient.<init>(DefaultHttpClient.java:162)
Disconnected from the target VM, address: '127.0.0.1:53429', transport: 'socket'
at com.atlassian.jira.rest.client.internal.async.AsynchronousHttpClientFactory.createClient(AsynchronousHttpClientFactory.java:53)
at com.atlassian.jira.rest.client.internal.async.AsynchronousJiraRestClientFactory.create(AsynchronousJiraRestClientFactory.java:35)
at com.atlassian.jira.rest.client.internal.async.AsynchronousJiraRestClientFactory.createWithBasicHttpAuthentication(AsynchronousJiraRestClientFactory.java:42)
at jiratest.SimpleMain.main(SimpleMain.java:13)

从我一直在阅读的内容来看，这是一个依赖问题，因为库不同。这是我正在使用的：

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <java.version>1.8</java.version>
    <pojomatic.version>2.0.1</pojomatic.version>
    <jira-api.version>6.1.1</jira-api.version>
    <jira-rest-java-client-core.version>3.0.0</jira-rest-java-client-core.version>
    <httpcore.version>4.4.1</httpcore.version>
    <commons-io.version>2.4</commons-io.version>
</properties>

<dependencies>
    <dependency>
        <groupId>com.atlassian.jira</groupId>
        <artifactId>jira-api</artifactId>
        <version>${jira-api.version}</version>
    </dependency>
    <dependency>
        <groupId>com.atlassian.jira</groupId>
        <artifactId>jira-rest-java-client-core</artifactId>
        <version>${jira-rest-java-client-core.version}</version>
    </dependency>

    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>${httpcore.version}</version>
    </dependency>
    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpcore</artifactId>
        <version>${httpcore.version}</version>
    </dependency>
    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpcore-nio</artifactId>
        <version>${httpcore.version}</version>
    </dependency>

    <dependency>
        <groupId>org.pojomatic</groupId>
        <artifactId>pojomatic</artifactId>
        <version>${pojomatic.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-batch</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

有人知道我应该使用什么版本吗？我仍然缺少依赖项吗？我一直在阅读 atlasian q/a 和各种谷歌文档，我想我已经很接近了，但我不确定我还缺少什么。

提前感谢大家:)

Answer 1

在互联网上尝试了所有其他解决方案后，修改我的 log4j2 配置对我有用：

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="DEBUG">
<Appenders>
    <Console name="Console" target="SYSTEM_OUT">
        <PatternLayout pattern="%msg%n" />
    </Console>
    <File name="File" fileName="qed.log" immediateFlush="true" append="true">
        <PatternLayout pattern="%d{yyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
    </File>
</Appenders>
<Loggers>
    <Logger name="com.atlassian.jira.rest.client.internal.async.AsynchronousHttpClientFactory$MavenUtils" level="OFF"/>
    <Root level="DEBUG">
        <AppenderRef ref="Console" />
        <AppenderRef ref="File"/>
    </Root>
</Loggers>

配置的关键部分是：

<Logger name="com.atlassian.jira.rest.client.internal.async.AsynchronousHttpClientFactory$MavenUtils" level="OFF"/>

显然它不能解决问题，但它确实隐藏了它。

尽管 NullPointerException 看起来很讨厌，但它对 ApacheAsyncHttpClient 的创建没有影响，请参阅：

        try {
            resourceAsStream = MavenUtils.class.getResourceAsStream(String
                    .format("/META-INF/maven/%s/%s/pom.properties", groupId, artifactId));
            props.load(resourceAsStream);
            return props.getProperty("version", UNKNOWN_VERSION);
        } catch (Exception e) {
            logger.debug("Could not find version for maven artifact {}:{}", groupId, artifactId);
            logger.debug("Got the following exception", e);
            return UNKNOWN_VERSION;
        } finally {

Answer 2

我遇到了同样的问题，并通过以下方式解决了它： 我两个都有

<dependency>
  <groupId>com.atlassian.jira</groupId>
  <artifactId>jira-rest-java-client-core</artifactId>
  <version>2.0.0-m25</version>
</dependency>

和

<dependency>
  <groupId>com.atlassian.httpclient</groupId>
  <artifactId>atlassian-httpclient-apache-httpcomponents</artifactId>
  <version>0.13.2</version>
</dependency>

在我的 pom.xml 文件中。原来client-core里面已经有httpcomponents了，他们发生了冲突。删除第二个依赖项解决了问题

Answer 3

实际问题在于 Spring 的传递依赖覆盖了 atlassian 的传递依赖。解决此问题的方法是将依赖关系重新调整为 jrjc 需要的版本，而不是更新的版本。

<dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>org.apache.httpcomponents</groupId>
      <artifactId>httpclient</artifactId>
      <version>4.2.1-atlassian-2</version>
    </dependency>
    <dependency>
      <groupId>org.apache.httpcomponents</groupId>
      <artifactId>httpasyncclient</artifactId>
      <version>4.0-beta3-atlassian-1</version>
    </dependency>
  </dependencies>
</dependencyManagement>

注意：这些版本可能会在未来的版本中发生变化，但它们适用于 JRJC 核心版本 3.0.0。你可以通过阅读mvn dependency:tree 的输出来发现，它会说：httpasyncclient:jar:4.0.2:compile - version managed from 4.0-beta3-atlassian-1 这让你知道maven 正在使用httpsyncclient 的4.0.2 版本，所以你需要将它覆盖回4.0-beta3-atlassian-1 .