xml maven spring - 找不到元素“beans”的声明

maven spring - Cannot find the declaration of element 'beans'

提问by JJT

I have a spring project built with the usage of maven (packaged as jar) (dependencies are copied to a separate directory and added to classpath)

我有一个使用 maven 构建的 spring 项目（打包为 jar）（将依赖项复制到单独的目录并添加到类路径中）

I want to run it as java -jar

我想将它作为 java -jar 运行

The problem is that when I run it I get:

问题是，当我运行它时，我得到：

Caused by: org.xml.sax.SAXParseException: cvc-elt.1: Cannot find the declaration of element 'beans'.

引起：org.xml.sax.SAXParseException：cvc-elt.1：找不到元素“beans”的声明。

It happens because spring.schemas and spring.handlers are located in a few jars i.e.: spring-beans, etc.

发生这种情况是因为 spring.schemas 和 spring.handlers 位于几个 jar 中，即：spring-beans 等。

Is there any way to solve it, supposing that I don't want to use shade plugin to unpack all dependencies and concatenate the content of spring.schemas and spring.handlers?

有没有什么办法可以解决，假设我不想使用shade插件来解包所有的依赖并将spring.schemas和spring.handlers的内容连接起来？

I would also like to avoid saving xsd files in my project and changing schemaLocation to point to my location.

我还想避免在我的项目中保存 xsd 文件并将 schemaLocation 更改为指向我的位置。

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:camel="http://camel.apache.org/schema/spring"
    xsi:schemaLocation="
       http://www.springframework.org/schema/beans http://http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
       http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd">

    <camel:camelContext>
        <camel:routeBuilder ref="fakeRouteBuilder"/>
    </camel:camelContext>

    <bean id="fakeRouteBuilder" class="<className>" />


</beans>

回答by rds

I know 2 situations where you can have this problem

我知道 2 种情况下您可能会遇到此问题

• If you don't have an internet connection (behind a proxy, for instance). In that case, download the XSD, copy it next to the XML, and change the schema location to xsi:schemaLocation=" http://www.springframework.org/schema/beans spring-beans-2.5.xsd ..."
• If you have an internet connection / still have the problem, that's because you use different versions of Spring for the XSD and the jar.

• 如果您没有互联网连接（例如在代理后面）。在这种情况下，下载 XSD，将其复制到 XML 旁边，然后将架构位置更改为xsi:schemaLocation=" http://www.springframework.org/schema/beans spring-beans-2.5.xsd ..."
• 如果您有互联网连接/仍然有问题，那是因为您为 XSD 和 jar 使用了不同版本的 Spring。

回答by Rajendra

I think the XSD would be part the spring jar, so shouldn't be issue.

我认为 XSD 将是弹簧罐的一部分，所以不应该是问题。

回答by Tomasz

Spring jars contain META-INF/spring.handlers and META-INF/spring.schemas files. To avoid overwriting the files when aggregating dependencies to one jar you can use maven Shade plugin:

Spring jar 包含 META-INF/spring.handlers 和 META-INF/spring.schemas 文件。为了避免在将依赖项聚合到一个 jar 时覆盖文件，您可以使用 maven Shade 插件：

http://maven.apache.org/plugins/maven-shade-plugin/examples/resource-transformers.html#AppendingTransformer

http://maven.apache.org/plugins/maven-shade-plugin/examples/resource-transformers.html#AppendingTransformer

回答by A. Masson

Got the same problem because I was behind a proxy. I was running a Spring MVC app under Tomcat 6. Just added the following lines at the biginning of my catalina.batfile and that solved my problem:

遇到了同样的问题，因为我在代理后面。我在 Tomcat 6 下运行 Spring MVC 应用程序。刚刚在我的catalina.bat文件的 biginning 添加了以下几行，这解决了我的问题：

set JAVA_OPTS=%JAVA_OPTS% -Dhttp.proxyHost=XXXX -Dhttp.proxyPort=YYYYY -Dhttp.proxyUser=ZZZZ -Dhttp.proxyPassword=XXXXXX

回答by Joffer

I was able to resolve a similar problem by clearing the xsd file from my remote resources cache, Window > Preferences > General > Network Connection > Cache

我能够通过从我的远程资源缓存中清除 xsd 文件来解决类似的问题，窗口 > 首选项 > 常规 > 网络连接 > 缓存

回答by ppeterka

META-INF/INDEX.LISTfile generated by the maven-assembly-plugin can also be a culprit.

META-INF/INDEX.LISTmaven-assembly-plugin 生成的文件也可能是罪魁祸首。

Cause: a Java bug: "ClassLoader.getResources() returns only 1 instance when using jar indexing"

原因：Java 错误：“ClassLoader.getResources() 在使用 jar 索引时仅返回 1 个实例”

Solution: disable the indexing in the assembly descriptor:

解决方案：禁用程序集描述符中的索引：

<indexed>false</indexed>

Resources: Spring JIRA SPR-5705JDK-6957241 ClassLoader.getResources() returns only 1 instance when using jar indexing

资源： Spring JIRA SPR-5705 JDK-6957241 ClassLoader.getResources() 使用 jar 索引时仅返回 1 个实例

回答by Johnny

Also you can use advice from hereto solve this problem

你也可以使用这里的建议来解决这个问题

回答by Sergio Trapiello

I had exactly the same problem and I think it is caused by 2 principal reasons:

我遇到了完全相同的问题，我认为这是由两个主要原因引起的：

• You have different versions for spring-security dependencies and XSD file references.
• Also it could happend if you use different versions of spring common framework and spring-security.

• 对于 spring-security 依赖项和 XSD 文件引用，您有不同的版本。
• 如果您使用不同版本的 spring 通用框架和 spring-security，也可能发生这种情况。

回答by zawhtut

I got that error when my XSD url pointing to different location that is different from XSD location defining in the jar file. For example, spring-beans-3.0.xsdinstead of spring-beans-2.5.xsdvise-versa.

当我的 XSD url 指向与 jar 文件中定义的 XSD 位置不同的不同位置时，我收到了该错误。例如，spring-beans-3.0.xsd而不是spring-beans-2.5.xsd反之亦然。

回答by Sean Patrick Floyd

There's a http://too much in your XSD declaration. Try this:

http://您的 XSD 声明中有太多内容。尝试这个：

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:camel="http://camel.apache.org/schema/spring"
    xsi:schemaLocation="
       http://www.springframework.org/schema/beans    
       http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
       http://camel.apache.org/schema/spring
       http://camel.apache.org/schema/spring/camel-spring.xsd">

(yours was http://http://www.springframework.org/schema/beans/spring-beans-2.5.xsd)

（你的是http://http://www.springframework.org/schema/beans/spring-beans-2.5.xsd）