java - Heroku 未定义上下文

Question

我在heroku中部署了一个应用程序，但无法访问它

Heroku 日志

2015-10-18T14:13:28.456831+00:00 heroku[web.1]: State changed from crashed to starting
2015-10-18T14:13:38.538928+00:00 app[web.1]: Setting JAVA_TOOL_OPTIONS defaults based on dyno size. Custom settings will override them.
2015-10-18T14:13:38.552255+00:00 app[web.1]: Picked up JAVA_TOOL_OPTIONS: -Xmx384m -Xss512k -Dfile.encoding=UTF-8
2015-10-18T14:13:39.140316+00:00 app[web.1]: 2015-10-18 14:13:39.135:INFO:oejr.Runner:main: Runner
2015-10-18T14:13:39.140320+00:00 app[web.1]: ERROR: No Contexts defined
2015-10-18T14:13:39.140321+00:00 app[web.1]: Usage: java [-Djetty.home=dir] -jar jetty-runner.jar [--help|--version] [ server opts] [[ context opts] context ...] 
2015-10-18T14:13:39.140322+00:00 app[web.1]: Server opts:
2015-10-18T14:13:39.140323+00:00 app[web.1]:  --version                           - display version and exit
2015-10-18T14:13:39.140324+00:00 app[web.1]:  --log file                          - request log filename (with optional 'yyyy_mm_dd' wildcard
2015-10-18T14:13:39.140325+00:00 app[web.1]:  --out file                          - info/warn/debug log filename (with optional 'yyyy_mm_dd' wildcard
2015-10-18T14:13:39.140326+00:00 app[web.1]:  --host name|ip                      - interface to listen on (default is all interfaces)
2015-10-18T14:13:39.140327+00:00 app[web.1]:  --port n                            - port to listen on (default 8080)
2015-10-18T14:13:39.140328+00:00 app[web.1]:  --stop-port n                       - port to listen for stop command
2015-10-18T14:13:39.130872+00:00 app[web.1]: 2015-10-18 14:13:39.127:INFO::main: Logging initialized @89ms
2015-10-18T14:13:39.140329+00:00 app[web.1]:  --stop-key n                        - security string for stop command (required if --stop-port is present)
2015-10-18T14:13:39.140329+00:00 app[web.1]:  [--jar file]*n                      - each tuple specifies an extra jar to be added to the classloader
2015-10-18T14:13:39.140330+00:00 app[web.1]:  [--lib dir]*n                       - each tuple specifies an extra directory of jars to be added to the classloader
2015-10-18T14:13:39.140331+00:00 app[web.1]:  [--classes dir]*n                   - each tuple specifies an extra directory of classes to be added to the classloader
2015-10-18T14:13:39.140332+00:00 app[web.1]:  --stats [unsecure|realm.properties] - enable stats gathering servlet context
2015-10-18T14:13:39.140332+00:00 app[web.1]:  [--config file]*n                   - each tuple specifies the name of a jetty xml config file to apply (in the order defined)
2015-10-18T14:13:39.140333+00:00 app[web.1]: Context opts:
2015-10-18T14:13:39.140334+00:00 app[web.1]:  [[--path /path] context]*n          - WAR file, web app dir or context xml file, optionally with a context path
2015-10-18T14:13:39.939608+00:00 heroku[web.1]: Process exited with status 1
2015-10-18T14:13:39.957993+00:00 heroku[web.1]: State changed from starting to crashed  

工头开始

11:29:04 web.1  | started with pid 464
11:29:04 web.1  | Error: Unable to access jarfile target/dependency/jetty-runner.jar
11:29:04 web.1  | exited with code 1
11:29:04 system | sending SIGTERM to all processes

Pom.xml 文件

<configuration>
    <artifactItems>
        <artifactItem>
            <groupId>org.eclipse.jetty</groupId>
            <artifactId>jetty-runner</artifactId>
            <version>9.2.3.v20140905</version>
            <destFileName>jetty-runner.jar</destFileName>
        </artifactItem>
    </artifactItems>
</configuration>

每次我尝试访问我的应用程序时，浏览器都会显示以下消息

因为我无法访问我的应用程序？与 jetty 有任何兼容性错误吗？

Answer 1

您如何部署您的应用程序？使用 git push、mvn heroku:deploy、heroku deploy:war 还是其他东西？

您的 pom.xml 应该包含 jetty-runner 配置中的所有内容:

  <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-dependency-plugin</artifactId>
    <version>2.4</version>
    <executions>
      <execution>
        <id>copy-dependencies</id>
        <phase>package</phase>
            <goals><goal>copy</goal></goals>
            <configuration>
                <artifactItems>
                    <artifactItem>
                        <groupId>org.eclipse.jetty</groupId>
                        <artifactId>jetty-runner</artifactId>
                        <version>9.2.7.v20150116</version>
                        <destFileName>jetty-runner.jar</destFileName>
                    </artifactItem>
                </artifactItems>
            </configuration>
      </execution>
    </executions>
  </plugin>

也就是说，确保它绑定(bind)到package 目标。如果您使用 git Push，请检查构建输出以确保插件配置运行。

最后，通过检查 slug 来检查 jetty-runner 是否存在:

$ heroku run ls target/dependency