java - Solr 中的日志文件

Question

伙计们，我尝试在 Java 中使用 solrj。首先我需要初始化一个 HttpSolrServer 对象。

当我运行时:

//This variable stores the default url of the solr sever
protected static final String DEFAULT_URL = "http://localhost:8083/solr";
//This is a static instance of solr sever.
protected static HttpSolrServer solrServer = null;
//This keeps the log
private static Logger log = Logger.getLogger(SolrService.class);

//Create a solrServer instance. The connection time out is set to be 5000 ms.
static {
    solrServer = new HttpSolrServer(DEFAULT_URL);
    solrServer.setConnectionTimeout(5000);
}

它给出:

log4j:ERROR setFile(null,true) call failed.
java.io.FileNotFoundException: /logs/log (No such file or directory)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(FileOutputStream.java:206)
at java.io.FileOutputStream.<init>(FileOutputStream.java:127)
at org.apache.log4j.FileAppender.setFile(FileAppender.java:289)
at org.apache.log4j.FileAppender.activateOptions(FileAppender.java:163)
at org.apache.log4j.DailyRollingFileAppender.activateOptions(DailyRollingFileAppender.java:215)
at org.apache.log4j.config.PropertySetter.activate(PropertySetter.java:256)
at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:132)
at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:96)
at org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:654)
at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:612)
at org.apache.log4j.PropertyConfigurator.configureRootCategory(PropertyConfigurator.java:509)
at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:415)
at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:441)
at org.apache.log4j.helpers.OptionConverter.selectAndConfigure(OptionConverter.java:470)
at org.apache.log4j.LogManager.<clinit>(LogManager.java:122)
at org.apache.log4j.Logger.getLogger(Logger.java:117)
at com.pressure.meta.search.SolrService.<clinit>(SolrService.java:23)
at com.pressure.test.search.SolrServiceTest.testBuildIndex(SolrServiceTest.java:36)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
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:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
log4j:ERROR Either File or DatePattern options are not set for appender [stdout].

好吧，我完全不知道“日志/日志”在哪里。你能帮我吗？非常感谢。

Answer 1

这实际上与 Solr 没有任何关系，它纯粹是 Log4J 配置。您应该能够在 Solr 目录(可能在资源目录下)中找到 log4j.xml 或 log4j.properties 文件，这将允许您更新保存日志文件的适当位置。您可以在 Log4jXmlFormat wiki page 上查看有关如何配置 XML 和属性文件的示例。 .