【问题标题】:Dropwizard RequestLogDropwizard 请求日志
【发布时间】:2016-01-26 16:00:16
【问题描述】:

在集成测试我的 Dropwizard 0.9.2 服务时遇到一个奇怪的异常。异常和配置如下。

我不明白为什么 requestLog 是未知的? DW documentation 说,下面的配置部分应该可以工作。 requestLog 可以在

中找到

io.dropwizard.server.AbstractServerFactory.class

io.dropwizard.server.DefaultServerFactory.class

扩展它,所以应该可以使用requestLog。这里有什么问题?

有人知道这个问题吗?

配置部分

server:
  requestLog:
    timeZone: UTC
    appenders:
     - type: console
       threshold: DEBUG
     - type: file
       currentLogFilename: ./log/access.log
       threshold: ALL
       archive: true
       archivedLogFilenamePattern: ./log/access.%d.log.gz
       archivedFileCount: 14
  maxThreads: 1024
  minThreads: 8
  maxQueuedRequests: 1024
  applicationConnectors:
    - type: http
      port: 80
  adminConnectors:
    - type: http
      port: 12345

例外

java.lang.RuntimeException: io.dropwizard.configuration.ConfigurationParsingException: myService.yml has an error:
  * Unrecognized field at: server.requestLog
    Did you mean?:
      - adminConnectors
      - adminContextPath
      - adminMaxThreads
      - adminMinThreads
      - applicationConnectors
        [1 more]

    at com.google.common.base.Throwables.propagate(Throwables.java:160)
    at io.dropwizard.testing.DropwizardTestSupport.startIfRequired(DropwizardTestSupport.java:214)
    at io.dropwizard.testing.DropwizardTestSupport.before(DropwizardTestSupport.java:115)
    at io.dropwizard.testing.junit.DropwizardAppRule.before(DropwizardAppRule.java:87)
    at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:46)
    at org.junit.rules.RunRules.evaluate(RunRules.java:20)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: io.dropwizard.configuration.ConfigurationParsingException: myservice.yml has an error:
  * Unrecognized field at: server.requestLog
    Did you mean?:
      - adminConnectors
      - adminContextPath
      - adminMaxThreads
      - adminMinThreads
      - applicationConnectors
        [1 more]

    at io.dropwizard.configuration.ConfigurationParsingException$Builder.build(ConfigurationParsingException.java:271)
    at io.dropwizard.configuration.ConfigurationFactory.build(ConfigurationFactory.java:163)
    at io.dropwizard.configuration.ConfigurationFactory.build(ConfigurationFactory.java:95)
    at io.dropwizard.cli.ConfiguredCommand.parseConfiguration(ConfiguredCommand.java:115)
    at io.dropwizard.cli.ConfiguredCommand.run(ConfiguredCommand.java:64)
    at io.dropwizard.testing.DropwizardTestSupport.startIfRequired(DropwizardTestSupport.java:212)
    ... 11 more
Caused by: com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "requestLog" (class io.dropwizard.server.DefaultServerFactory), not marked as ignorable (6 known properties: "adminMaxThreads", "adminConnectors", "applicationConnectors", "applicationContextPath", "adminMinThreads", "adminContextPath"])
 at [Source: N/A; line: -1, column: -1] (through reference chain: .....

【问题讨论】:

  • 能否请您也发布您用于测试的代码。
  • 这对我有用。我的猜测是您使用的版本有问题。也许你的类路径中有旧版本的 DW?
  • 它可以工作,但是如果我使用集成测试TestRule,那么它会失败。
  • 如果我创建并运行 jar,也会发生这种情况。任何想法如何解决这个问题?服务器工厂类是没有加载还是错误的?我该如何检查?
  • 将服务器类型设置为默认可以解决这个问题,但现在我在启动过程中遇到了一些验证异常......

标签: exception logging dropwizard


【解决方案1】:

我们遇到了同样的问题。这是使用旧版本的杰克逊的问题。我们已经从 v 2.6.3 升级到 v 2.6.5 并且错误消失了。

【讨论】:

  • 也适用于从 2.7.0 升级到 2.7.3
【解决方案2】:

尝试将 timeZone: UTC 放在每个 appender 下,如下所示:

server:
  requestLog:
    appenders:
     - type: console
       threshold: DEBUG
       timeZone: UTC
     - type: file
       currentLogFilename: ./log/access.log
       threshold: ALL
       archive: true
       archivedLogFilenamePattern: ./log/access.%d.log.gz
       archivedFileCount: 14
       timeZone: UTC
  maxThreads: 1024
  minThreads: 8
  maxQueuedRequests: 1024
  applicationConnectors:
    - type: http
      port: 80
  adminConnectors:
    - type: http
      port: 12345

【讨论】:

    【解决方案3】:

    当我添加了一个引入 com.fasterxml.jackson.core:jackson-databind:jar:2.7.2 的依赖项时,更新版本的 jackson 也出现了同样的错误

    从 pom.xml 中的该依赖项中排除 jackson-databind 解决了它。

    【讨论】:

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