无法创建AsynchronousJiraRestClientFactory（依赖项）

Question

我以前用Java创建了一个轻松的客户端应用程序来批量处理票证和加快工作流，但是，我想创建一个更完整的应用程序，该应用程序利用实际的JIRA api而不是在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)

根据我的阅读，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>

有谁知道我应该使用什么版本？我还缺少依赖吗？我一直在阅读atlasian问题和各种Google文档，我想我已经接近了，但是我不确定我还缺少什么。

在此先感谢所有:)

Answer 1

实际问题在于 Spring 的传递依赖项覆盖了 atlassian 的传递依赖项。解决此问题的方法是将依赖关系恢复为 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版本中发生更改，但它们适用于 JRJC 核心版本 3.0.0。您可以通过阅读 的输出来发现mvn dependency:tree，它会显示类似以下内容：httpasyncclient:jar:4.0.2:compile - version managed from 4.0-beta3-atlassian-1这让您知道 maven 使用的是 4.0.2 版本httpsyncclient，因此您需要将其覆盖回4.0-beta3-atlassian-1。