我正在尝试让 Spring 和 Quartz 的基本示例正常工作。这是我正在关注的教程:http://www.mkyong.com/spring/spring-quartz-scheduler-example/
我已经尽可能准确地复制了所有内容，但我在输出窗口中看不到任何内容。
spring-quartz.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="runMeTask" class="com.ksc.jobs.RunMeTask" />
<!-- Spring Quartz -->
<bean name="runMeJob" class="org.springframework.scheduling.quartz.JobDetailBean">
<property name="jobClass" value="com.ksc.jobs.RunMeJob" />
<property name="jobDataAsMap">
<map>
<entry key="runMeTask" value-ref="runMeTask" />
</map>
</property>
</bean>
<bean id="simpleTrigger" class="org.springframework.scheduling.quartz.SimpleTriggerBean">
<property name="jobDetail" ref="runMeJob" />
<property name="repeatInterval" value="5000" />
<property name="startDelay" value="1000" />
</bean>
<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="jobDetails">
<list>
<ref bean="runMeJob" />
</list>
</property>
<property name="triggers">
<list>
<ref bean="simpleTrigger" />
</list>
</property>
</bean>
</beans>
applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<import resource="spring-quartz.xml"/>
</beans>
项目结构
编辑
我是否需要以某种方式手动启 Action 业？我在该教程和其他教程中看到，他们通常在 main() 方法中启动 quartz 作业。来自 .NET 背景对我来说似乎有点奇怪，因为我只知道桌面应用程序中的 main 方法；不是网络应用程序。在 ASP.NET 中，我们有 Global.asax，我们可以在其中调用代码以在 Web 应用程序启动时运行。 Java中有一些等价物吗？或者也许这根本不是问题？我只是在这里猜测。如果有人对如何解决这个问题有任何想法，甚至只是给我一个工作示例(甚至可以与上面的不同；我不挑剔)...那么我将不胜感激。我只需要一个基本的工作示例，稍后可以根据我的要求进行修改。
编辑 2
这是 glassfish 服务器的输出，如果有帮助的话:
[注意:由于这篇文章的正文太长而被删除。否则我将无法在下方发布编辑#3。]
编辑 3
有些进展，但仍未奏效。我已经按照@shuttsy 的建议添加了 log4j 文件，这里是 glassfish 的新输出:
Launching GlassFish on Felix platform
INFO: Running GlassFish Version: GlassFish Server Open Source Edition 3.1.2.2 (build 5)
INFO: Registered org.glassfish.ha.store.adapter.cache.ShoalBackingStoreProxy for persistence-type = replicated in BackingStoreFactoryRegistry
INFO: Grizzly Framework 1.9.50 started in: 0ms - bound to [0.0.0.0:3700]
INFO: Grizzly Framework 1.9.50 started in: 31ms - bound to [0.0.0.0:8080]
INFO: Grizzly Framework 1.9.50 started in: 15ms - bound to [0.0.0.0:8181]
INFO: Grizzly Framework 1.9.50 started in: 15ms - bound to [0.0.0.0:4848]
INFO: Grizzly Framework 1.9.50 started in: 0ms - bound to [0.0.0.0:7676]
INFO: The Admin Console is already installed, but not yet loaded.
INFO: GlassFish Server Open Source Edition 3.1.2.2 (5) startup time : Felix (1,750ms), startup services(771ms), total(2,521ms)
INFO: HV000001: Hibernate Validator 4.3.0.Final
INFO: JMX005: JMXStartupService had Started JMXConnector on JMXService URL service:jmx:rmi://Matt-Laptop:8686/jndi/rmi://Matt-Laptop:8686/jmxrmi
INFO: Grizzly Framework 1.9.50 started in: 0ms - bound to [0.0.0.0:8080]
INFO: Grizzly Framework 1.9.50 started in: 0ms - bound to [0.0.0.0:8181]
INFO: Created EjbThreadPoolExecutor with thread-core-pool-size 16 thread-max-pool-size 32 thread-keep-alive-seconds 60 thread-queue-capacity 2147483647 allow-core-thread-timeout false
INFO: SEC1002: Security Manager is OFF.
INFO: SEC1010: Entering Security Startup Service
INFO: SEC1143: Loading policy provider com.sun.enterprise.security.provider.PolicyWrapper.
INFO: SEC1115: Realm [admin-realm] of classtype [com.sun.enterprise.security.auth.realm.file.FileRealm] successfully created.
INFO: SEC1115: Realm [file] of classtype [com.sun.enterprise.security.auth.realm.file.FileRealm] successfully created.
INFO: SEC1115: Realm [certificate] of classtype [com.sun.enterprise.security.auth.realm.certificate.CertificateRealm] successfully created.
INFO: SEC1011: Security Service(s) Started Successfully
INFO: WEB0169: Created HTTP listener [http-listener-1] on host/port [0.0.0.0:8080]
INFO: WEB0169: Created HTTP listener [http-listener-2] on host/port [0.0.0.0:8181]
INFO: WEB0169: Created HTTP listener [admin-listener] on host/port [0.0.0.0:4848]
INFO: WEB0171: Created virtual server [server]
INFO: WEB0171: Created virtual server [__asadmin]
INFO: WEB0172: Virtual server [server] loaded default web module []
SEVERE: Exception while visiting com/sun/gjc/spi/JdbcObjectsFactory.class of size 3615
java.lang.NullPointerException
at org.glassfish.hk2.classmodel.reflect.impl.TypesImpl.getType(TypesImpl.java:78)
at org.glassfish.hk2.classmodel.reflect.impl.ModelClassVisitor.visit(ModelClassVisitor.java:119)
at org.objectweb.asm.ClassReader.accept(Unknown Source)
at org.objectweb.asm.ClassReader.accept(Unknown Source)
at org.glassfish.hk2.classmodel.reflect.Parser$5.on(Parser.java:363)
at org.glassfish.hk2.classmodel.reflect.util.JarArchive.onSelectedEntries(JarArchive.java:125)
at org.glassfish.hk2.classmodel.reflect.Parser.doJob(Parser.java:348)
at org.glassfish.hk2.classmodel.reflect.Parser.access$300(Parser.java:70)
at org.glassfish.hk2.classmodel.reflect.Parser$3.call(Parser.java:307)
at org.glassfish.hk2.classmodel.reflect.Parser$3.call(Parser.java:296)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
INFO: EclipseLink, version: Eclipse Persistence Services - 2.3.2.v20111125-r10461
INFO: file:/C:/Users/Matt/Documents/NetBeansProjects/KSC/build/web/WEB-INF/classes/_KSCPU login successful
WARNING: Multiple [2] JMX MBeanServer instances exist, we will use the server at index [0] : [com.sun.enterprise.v3.admin.DynamicInterceptor@28245558].
WARNING: JMX MBeanServer in use: [com.sun.enterprise.v3.admin.DynamicInterceptor@28245558] from index [0]
WARNING: JMX MBeanServer in use: [com.sun.jmx.mbeanserver.JmxMBeanServer@3a683b33] from index [1]
SEVERE: log4j:ERROR log4j called after unloading, see http://logging.apache.org/log4j/1.2/faq.html#unload.
SEVERE: java.lang.IllegalStateException: Class invariant violation
at org.apache.log4j.LogManager.getLoggerRepository(LogManager.java:199)
at org.apache.log4j.LogManager.getLogger(LogManager.java:228)
at org.slf4j.impl.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:64)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:253)
at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java:156)
at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java:132)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:272)
at org.springframework.beans.TypeConverterDelegate.<clinit>(TypeConverterDelegate.java:53)
at sun.misc.Unsafe.ensureClassInitialized(Native Method)
at sun.reflect.UnsafeFieldAccessorFactory.newFieldAccessor(UnsafeFieldAccessorFactory.java:43)
at sun.reflect.ReflectionFactory.newFieldAccessor(ReflectionFactory.java:140)
at java.lang.reflect.Field.acquireFieldAccessor(Field.java:949)
at java.lang.reflect.Field.getFieldAccessor(Field.java:930)
at java.lang.reflect.Field.get(Field.java:372)
at org.glassfish.web.loader.WebappClassLoader.clearReferences(WebappClassLoader.java:1833)
at org.glassfish.web.loader.WebappClassLoader.stop(WebappClassLoader.java:1662)
at org.glassfish.web.loader.WebappClassLoader.preDestroy(WebappClassLoader.java:1631)
at org.glassfish.deployment.common.DeploymentContextImpl.getClassLoader(DeploymentContextImpl.java:236)
at org.glassfish.deployment.common.DeploymentContextImpl.getClassLoader(DeploymentContextImpl.java:186)
at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:450)
at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:240)
at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:389)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$1.execute(CommandRunnerImpl.java:348)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:363)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1085)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$1200(CommandRunnerImpl.java:95)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1291)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1259)
at com.sun.enterprise.v3.admin.AdminAdapter.doCommand(AdminAdapter.java:461)
at com.sun.enterprise.v3.admin.AdminAdapter.service(AdminAdapter.java:212)
at com.sun.grizzly.tcp.http11.GrizzlyAdapter.service(GrizzlyAdapter.java:179)
at com.sun.enterprise.v3.server.HK2Dispatcher.dispath(HK2Dispatcher.java:117)
at com.sun.enterprise.v3.services.impl.ContainerMapper$Hk2DispatcherCallable.call(ContainerMapper.java:354)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:722)
SEVERE: at org.apache.log4j.LogManager.getLoggerRepository(LogManager.java:199)
SEVERE: at org.apache.log4j.LogManager.getLogger(LogManager.java:228)
SEVERE: at org.slf4j.impl.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:64)
SEVERE: at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:253)
SEVERE: at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java:156)
SEVERE: at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java:132)
SEVERE: at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:272)
SEVERE: at org.springframework.beans.TypeConverterDelegate.<clinit>(TypeConverterDelegate.java:53)
SEVERE: at sun.misc.Unsafe.ensureClassInitialized(Native Method)
SEVERE: at sun.reflect.UnsafeFieldAccessorFactory.newFieldAccessor(UnsafeFieldAccessorFactory.java:43)
SEVERE: at sun.reflect.ReflectionFactory.newFieldAccessor(ReflectionFactory.java:140)
SEVERE: at java.lang.reflect.Field.acquireFieldAccessor(Field.java:949)
SEVERE: at java.lang.reflect.Field.getFieldAccessor(Field.java:930)
SEVERE: at java.lang.reflect.Field.get(Field.java:372)
SEVERE: at org.glassfish.web.loader.WebappClassLoader.clearReferences(WebappClassLoader.java:1833)
SEVERE: at org.glassfish.web.loader.WebappClassLoader.stop(WebappClassLoader.java:1662)
SEVERE: at org.glassfish.web.loader.WebappClassLoader.preDestroy(WebappClassLoader.java:1631)
SEVERE: at org.glassfish.deployment.common.DeploymentContextImpl.getClassLoader(DeploymentContextImpl.java:236)
SEVERE: at org.glassfish.deployment.common.DeploymentContextImpl.getClassLoader(DeploymentContextImpl.java:186)
SEVERE: at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:450)
SEVERE: at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:240)
SEVERE: at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:389)
SEVERE: at com.sun.enterprise.v3.admin.CommandRunnerImpl$1.execute(CommandRunnerImpl.java:348)
SEVERE: at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:363)
SEVERE: at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1085)
SEVERE: at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$1200(CommandRunnerImpl.java:95)
SEVERE: at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1291)
SEVERE: at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1259)
SEVERE: at com.sun.enterprise.v3.admin.AdminAdapter.doCommand(AdminAdapter.java:461)
SEVERE: at com.sun.enterprise.v3.admin.AdminAdapter.service(AdminAdapter.java:212)
SEVERE: at com.sun.grizzly.tcp.http11.GrizzlyAdapter.service(GrizzlyAdapter.java:179)
SEVERE: at com.sun.enterprise.v3.server.HK2Dispatcher.dispath(HK2Dispatcher.java:117)
SEVERE: at com.sun.enterprise.v3.services.impl.ContainerMapper$Hk2DispatcherCallable.call(ContainerMapper.java:354)
SEVERE: at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
SEVERE: at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860)
SEVERE: at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757)
SEVERE: at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056)
SEVERE: at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229)
SEVERE: at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
SEVERE: at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
SEVERE: at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
SEVERE: at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
SEVERE: at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
SEVERE: at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
SEVERE: at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
SEVERE: at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
SEVERE: at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
SEVERE: at java.lang.Thread.run(Thread.java:722)
INFO: EJB5181:Portable JNDI names for EJB EventApplicationService: [java:global/KSC/EventApplicationService!com.ksc.services.EventApplicationService, java:global/KSC/EventApplicationService]
INFO: EJB5181:Portable JNDI names for EJB SiteSettingService: [java:global/KSC/SiteSettingService!com.ksc.services.SiteSettingService, java:global/KSC/SiteSettingService]
INFO: EJB5181:Portable JNDI names for EJB EventsService: [java:global/KSC/EventsService, java:global/KSC/EventsService!com.ksc.services.EventsService]
INFO: EJB5181:Portable JNDI names for EJB UserService: [java:global/KSC/UserService, java:global/KSC/UserService!com.ksc.services.UserService]
INFO: EJB5181:Portable JNDI names for EJB RoleService: [java:global/KSC/RoleService!com.ksc.services.RoleService, java:global/KSC/RoleService]
INFO: EJB5181:Portable JNDI names for EJB AnnouncementService: [java:global/KSC/AnnouncementService!com.ksc.services.AnnouncementService, java:global/KSC/AnnouncementService]
INFO: EJB5181:Portable JNDI names for EJB UserInRoleService: [java:global/KSC/UserInRoleService, java:global/KSC/UserInRoleService!com.ksc.services.UserInRoleService]
INFO: WELD-000900 1.1.8 (Final)
INFO: PWC1412: WebModule[null] ServletContext.log():No Spring WebApplicationInitializer types detected on classpath
INFO: PWC1412: WebModule[null] ServletContext.log():Initializing Spring root WebApplicationContext
SEVERE: log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
SEVERE: log4j:WARN Please initialize the log4j system properly.
SEVERE: log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
INFO: PWC1412: WebModule[null] ServletContext.log():Initializing Spring FrameworkServlet 'dispatcher'
INFO: WEB0671: Loading application [KSC] at [/KSC]
INFO: KSC was successfully deployed in 10,070 milliseconds.
所以，我们这里有一个关于 Quartz 的新错误(可能与我原来的问题有关，也可能不相关)。看来错误与 JDBC 相关。我正在使用 sqljdbc4 驱动程序:http://www.microsoft.com/en-us/download/details.aspx?displaylang=en&id=11774
最佳答案
您的 glassfish 输出表明您的 log4j 配置不正确。你有 log4j.properties 文件吗？尝试添加一个基本内容为:
log4j.rootLogger=INFO,stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %-5p - %m (%c)%n
Spring 将记录加载的 xml 文件和创建的 bean，但由于 log4j 问题，您无法获得此信息。
注意:您可以使用更简单的 Spring xml 实现相同的结果(即每 5 秒触发一次任务):
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:task="http://www.springframework.org/schema/task"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task.xsd">
<bean id="runMeTask" class="com.mkyong.common.RunMeTask" />
<task:scheduled-tasks>
<task:scheduled ref="runMeTask" method="printMe" cron="0/5 * * * * * " />
</task:scheduled-tasks>
试试这个，你现在得到输出了吗？
关于Java:Spring/Quartz:基本教程代码不起作用，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/13951950/
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我的主要目标是能够完全理解我正在使用的库/gem。我尝试在Github上从头到尾阅读源代码，但这真的很难。我认为更有趣、更温和的踏脚石就是在使用时阅读每个库/gem方法的源代码。例如，我想知道RubyonRails中的redirect_to方法是如何工作的:如何查找redirect_to方法的源代码？我知道在pry中我可以执行类似show-methodmethod的操作，但我如何才能对Rails框架中的方法执行此操作？您对我如何更好地理解Gem及其API有什么建议吗？仅仅阅读源代码似乎真的很难，尤其是对于框架。谢谢! 最佳答案 Ru
我的假设是moduleAmoduleBendend和moduleA::Bend是一样的。我能够从thisblog找到解决方案,thisSOthread和andthisSOthread.为什么以及什么时候应该更喜欢紧凑语法A::B而不是另一个，因为它显然有一个缺点？我有一种直觉，它可能与性能有关，因为在更多命名空间中查找常量需要更多计算。但是我无法通过对普通类进行基准测试来验证这一点。 最佳答案 这两种写作方法经常被混淆。首先要说的是，据我所知，没有可衡量的性能差异。(在下面的书面示例中不断查找)最明显的区别，可能也是最著名的，是你的
几个月前，我读了一篇关于rubygem的博客文章，它可以通过阅读代码本身来确定编程语言。对于我的生活，我不记得博客或gem的名称。谷歌搜索“ruby编程语言猜测”及其变体也无济于事。有人碰巧知道相关gem的名称吗？ 最佳答案 是这个吗:http://github.com/chrislo/sourceclassifier/tree/master 关于ruby-寻找通过阅读代码确定编程语言的rubygem？，我们在StackOverflow上找到一个类似的问题：
我正在尝试使用boilerpipe来自JRuby。我看过guide从JRuby调用Java，并成功地将它与另一个Java包一起使用，但无法弄清楚为什么同样的东西不能用于boilerpipe。我正在尝试基本上从JRuby中执行与此Java等效的操作:URLurl=newURL("http://www.example.com/some-location/index.html");Stringtext=ArticleExtractor.INSTANCE.getText(url);在JRuby中试过这个:require'java'url=java.net.URL.new("http://www
我目前正在使用以下方法获取页面的源代码:Net::HTTP.get(URI.parse(page.url))我还想获取HTTP状态，而无需发出第二个请求。有没有办法用另一种方法做到这一点？我一直在查看文档，但似乎找不到我要找的东西。 最佳答案 在我看来，除非您需要一些真正的低级访问或控制，否则最好使用Ruby的内置Open::URI模块:require'open-uri'io=open('http://www.example.org/')#=>#body=io.read[0,50]#=>"["200","OK"]io.base_ur