我有一个使用连接池的 Spring boot 项目。它在我的电脑上工作正常，但是当我的同事从 git 中提取代码然后尝试运行时。它抛出了如下错误:
2018-02-28 14:49:24.527 WARN 11856 --- [ost-startStop-1] o.a.tomcat.util.scan.StandardJarScanner : Failed to scan [file:/C:/Users/ABC/.m2/repository/com/mchange/c3p0/0.9.5.2/mchange-commons-java-0.2.11.jar] from classloader hierarchy
java.io.FileNotFoundException: C:\Users\ABC\.m2\repository\com\mchange\c3p0\0.9.5.2\mchange-commons-java-0.2.11.jar (The system cannot find the file specified)
at java.util.zip.ZipFile.open(Native Method) ~[na:1.8.0_60]
at java.util.zip.ZipFile.<init>(ZipFile.java:219) ~[na:1.8.0_60]
at java.util.zip.ZipFile.<init>(ZipFile.java:149) ~[na:1.8.0_60]
at java.util.jar.JarFile.<init>(JarFile.java:166) ~[na:1.8.0_60]
at java.util.jar.JarFile.<init>(JarFile.java:130) ~[na:1.8.0_60]
at org.apache.tomcat.util.scan.JarFileUrlJar.<init>(JarFileUrlJar.java:60) ~[tomcat-embed-core-8.5.23.jar:8.5.23]
at org.apache.tomcat.util.scan.JarFactory.newInstance(JarFactory.java:49) ~[tomcat-embed-core-8.5.23.jar:8.5.23]
at org.apache.tomcat.util.scan.StandardJarScanner.process(StandardJarScanner.java:338) ~[tomcat-embed-core-8.5.23.jar:8.5.23]
at org.apache.tomcat.util.scan.StandardJarScanner.scan(StandardJarScanner.java:288) ~[tomcat-embed-core-8.5.23.jar:8.5.23]
at org.apache.jasper.servlet.TldScanner.scanJars(TldScanner.java:262) [tomcat-embed-jasper-8.5.23.jar:8.5.23]
at org.apache.jasper.servlet.TldScanner.scan(TldScanner.java:104) [tomcat-embed-jasper-8.5.23.jar:8.5.23]
at org.apache.jasper.servlet.JasperInitializer.onStartup(JasperInitializer.java:101) [tomcat-embed-jasper-8.5.23.jar:8.5.23]
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5196) [tomcat-embed-core-8.5.23.jar:8.5.23]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [tomcat-embed-core-8.5.23.jar:8.5.23]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419) [tomcat-embed-core-8.5.23.jar:8.5.23]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409) [tomcat-embed-core-8.5.23.jar:8.5.23]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_60]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_60]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_60]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_60]
我也尝试为 mchange-commons-java-0.2.11 添加依赖，但它仍然不起作用:
<dependency>
<groupId>com.mchange</groupId>
<artifactId>mchange-commons-java</artifactId>
<version>0.2.11</version>
</dependency>
如果您遇到过或有过相关经历，请给我留言/想法。
我们将不胜感激和欢迎您的意见或建议!
最佳答案
来自 StandardJarScanner javadoc:
The default JarScanner implementation scans the WEB-INF/lib directory followed by the provided classloader and then works up the classloader hierarchy. This implementation is sufficient to meet the requirements of the Servlet 3.0 specification as well as to provide a number of Tomcat specific extensions. The extensions are:
Scanning the classloader hierarchy (enabled by default) Testing all files to see if they are JARs (disabled by default)
Testing all directories to see if they are exploded JARs (disabled by default)
All of the extensions may be controlled via configuration.
要禁止在启动时扫描特定的 jar，您可以添加此 spring boot 特定属性:
server.tomcat.additional-tld-skip-patterns=*mchange-commons-java*.jar
关于java - 系统找不到 : mchange-commons-java-0. 2.11，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/49022204/