Spring启动应用程序失败，因为它尝试加载application.xml文件

Question

我正在尝试将Spring引导添加到使用Spring的现有和可用的Java Web应用程序中。

在启动应用程序时会抛出这样的错误：

java.lang.IllegalStateException: Failed to load property source from location 'classpath:/application.xml'
at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.loadIntoGroup(ConfigFileApplicationListener.java:476)
at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:465)
at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:386)
at org.springframework.boot.context.config.ConfigFileApplicationListener.addPropertySources(ConfigFileApplicationListener.java:225)
at org.springframework.boot.context.config.ConfigFileApplicationListener.postProcessEnvironment(ConfigFileApplicationListener.java:195)
at org.springframework.boot.context.config.ConfigFileApplicationListener.onApplicationEnvironmentPreparedEvent(ConfigFileApplicationListener.java:182)
at org.springframework.boot.context.config.ConfigFileApplicationListener.onApplicationEvent(ConfigFileApplicationListener.java:168)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:122)
at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:74)
at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:54)
at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:325)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:296)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107)
at com.barclays.scp.eps.fullserve.application.Application.main(Application.java:12)

Caused by: java.util.InvalidPropertiesFormatException: org.xml.sax.SAXException: Invalid system identifier: http://java.sun.com/dtd/application_1_3.dtd
    at java.util.XMLUtils.load(XMLUtils.java:59)

看起来Spring启动尝试加载application.xml文件作为配置文件，虽然我没有在任何地方指定需要这样的文件，我以前从头开始创建Spring启动应用程序，没有{{1是必需的。

项目很大，它有很多依赖项，也许可能是由其中一些引起的？

我尝试将application.xml添加到资源文件夹，这是一个有效的空xml文件 - 主要异常仍然相同，尽管它的原因有点不同 - application.xml这意味着{{这次读了1}}，但由于某种原因 - 不正确。

这里可能存在什么问题，为什么需要这个Caused by: java.util.InvalidPropertiesFormatException: org.xml.sax.SAXParseException: Premature end of file.？据我所知，Spring启动应用程序中不需要这样的配置文件。

有关项目配置的一些信息 - 添加了这些Spring引导依赖项（Spring引导版本application.xml）：

application.xml

启动项目的主类非常基础（我知道它需要更多配置，但一次只需一步）：

1.5.9.RELEASE

任何建议将不胜感激。谢谢！

Answer 1

JDK：1.8 春季启动：2.1.4-发布

@Adomas我刚遇到这种情况。原因是我有一个依赖项jar，它在类路径中包含名为“ application.xml”的文件。

从此依赖项jar中删除此文件“ application.xml”后，我已经解决了该问题。

22:20:52.866 [main] ERROR org.springframework.boot.SpringApplication - Application run failed
java.lang.IllegalStateException: Failed to load property source from location 'classpath:/application.xml'
    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:556)
    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.loadForFileExtension(ConfigFileApplicationListener.java:502)
    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:469)
    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.lambda$null$6(ConfigFileApplicationListener.java:450)
    at java.lang.Iterable.forEach(Iterable.java:75)
    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.lambda$load$7(ConfigFileApplicationListener.java:449)
    at java.lang.Iterable.forEach(Iterable.java:75)
    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:446)
    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:334)
    at org.springframework.boot.context.config.ConfigFileApplicationListener.addPropertySources(ConfigFileApplicationListener.java:209)
    at org.springframework.boot.context.config.ConfigFileApplicationListener.postProcessEnvironment(ConfigFileApplicationListener.java:192)
    at org.springframework.boot.context.config.ConfigFileApplicationListener.onApplicationEnvironmentPreparedEvent(ConfigFileApplicationListener.java:179)
    at org.springframework.boot.context.config.ConfigFileApplicationListener.onApplicationEvent(ConfigFileApplicationListener.java:165)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127)
    at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:75)
    at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:54)
    at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:347)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:306)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248)
    at com.xxx.Application.main(Application.java:16)
Caused by: java.util.InvalidPropertiesFormatException: org.xml.sax.SAXParseException; lineNumber: 9; columnNumber: 33; 文档根元素 "beans" 必须匹配 DOCTYPE 根 "null"。
    at sun.util.xml.PlatformXmlPropertiesProvider.load(PlatformXmlPropertiesProvider.java:80)
    at java.util.Properties$XmlSupport.load(Properties.java:1201)
    at java.util.Properties.loadFromXML(Properties.java:881)
    at org.springframework.core.io.support.PropertiesLoaderUtils.fillProperties(PropertiesLoaderUtils.java:137)
    at org.springframework.core.io.support.PropertiesLoaderUtils.loadProperties(PropertiesLoaderUtils.java:122)
    at org.springframework.boot.env.PropertiesPropertySourceLoader.loadProperties(PropertiesPropertySourceLoader.java:59)
    at org.springframework.boot.env.PropertiesPropertySourceLoader.load(PropertiesPropertySourceLoader.java:47)
    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.loadDocuments(ConfigFileApplicationListener.java:574)
    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:528)
    ... 23 common frames omitted
Caused by: org.xml.sax.SAXParseException: 文档根元素 "beans" 必须匹配 DOCTYPE 根 "null"。
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:134)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:396)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:327)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:284)
    at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.rootElementSpecified(XMLDTDValidator.java:1599)
    at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.handleStartElement(XMLDTDValidator.java:1877)
    at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.startElement(XMLDTDValidator.java:742)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1359)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$ContentDriver.scanRootElementHook(XMLDocumentScannerImpl.java:1289)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3132)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:852)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:842)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:771)
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
    at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:243)
    at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:339)
    at sun.util.xml.PlatformXmlPropertiesProvider.getLoadingDoc(PlatformXmlPropertiesProvider.java:106)
    at sun.util.xml.PlatformXmlPropertiesProvider.load(PlatformXmlPropertiesProvider.java:78)
    ... 31 common frames omitted

Process finished with exit code 1

Answer 2

散文家是使用https://start.spring.io/创建新的Spring Boot项目，然后迁移您的代码。

其他一切都要多得多。

Answer 3

问题是由依赖项引起的，该资源中包含application.xml。在我的情况下，这是一个遗留的依赖，它没有在任何地方使用，所以修复只是为了删除它。如果需要依赖项，解决方案可能会以某种方式将application.xml加载为Spring引导配置文件。

Answer 4

我遇到import numpy as np import matplotlib.pyplot as plt import pandas as pd t = np.arange(0.0, 2.0, 0.01) s = np.sin(2 * np.pi * t) lower = 0 supper = np.ma.masked_where(s > lower, s) slower = np.ma.masked_where(s < lower, s) cmap = colors.ListedColormap(['green']) cmap.set_bad(color='red') fig, ax = plt.subplots() ax.plot(t, slower, color='green') ax.plot(t, supper, color='red') plt.show() 版

的问题

  

Error: Could not find or load main class ... in Spring Boot 1.5.9 version but not in 1.4.7

我目前使用1.5.9.RELEASE。我建议你尝试将你的spring依赖更新到这个版本

1.4.7.RELEASE

Answer 5

Spring Boot尝试在“classpath：/”中加载“application.xml”，“application.properties”和“application.yml”。如果要覆盖“application.xml”，则需要使用有效的xml。像：

<?xml version='1.0' encoding="UTF-8" standalone = "yes"?>
<!DOCTYPE dummy [ <!ELEMENT dummy (dummy?) > ]>
<dummy><dummy></dummy></dummy>