背景
在使用Eclipse进行Spring Boot应用开发时，如果项目启动是Run As->Run On Server方式运行就会报类似于Unable to process Jar entry [module-info.class] from Jar的错误，详细错误类似如下：
严重: Unable to process Jar entry [module-info.class] from Jar [file:/E:/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/chapter-03-2/WEB-INF/lib/jackson-core-2.10.1.jar] for annotations
org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19
at org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:97)
at org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:54)
at org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:174)
at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:83)
at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2053)
at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:2000)
at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1970)
at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1923)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1163)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:775)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:299)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:94)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5087)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
二月 27, 2020 9:34:31 上午 org.apache.catalina.startup.ContextConfig processAnnotationsJar
严重: Unable to process Jar entry [module-info.class] from Jar [file:/E:/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/chapter-03-2/WEB-INF/lib/jackson-datatype-jsr310-2.10.1.jar] for annotations
org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19
at org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:97)
at org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:54)
at org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:174)
at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:83)
at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2053)
at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:2000)
at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1970)
at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1923)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1163)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:775)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:299)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:94)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5087)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
二月 27, 2020 9:34:32 上午 org.apache.catalina.startup.ContextConfig processAnnotationsJar
严重: Unable to process Jar entry [module-info.class] from Jar [file:/E:/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/chapter-03-2/WEB-INF/lib/jackson-module-parameter-names-2.10.1.jar] for annotations
org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19
at org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:97)
at org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:54)
at org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:174)
at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:83)
at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2053)
at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:2000)
at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1970)
at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1923)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1163)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:775)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:299)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:94)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5087)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
二月 27, 2020 9:34:32 上午 org.apache.catalina.startup.ContextConfig processAnnotationsJar
严重: Unable to process Jar entry [module-info.class] from Jar [file:/E:/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/chapter-03-2/WEB-INF/lib/jackson-annotations-2.10.1.jar] for annotations
org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19
at org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:97)
at org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:54)
at org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:174)
at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:83)
at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2053)
at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:2000)
at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1970)
at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1923)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1163)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:775)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:299)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:94)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5087)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
二月 27, 2020 9:34:32 上午 org.apache.catalina.startup.ContextConfig processAnnotationsJar
严重: Unable to process Jar entry [module-info.class] from Jar [file:/E:/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/chapter-03-2/WEB-INF/lib/jackson-databind-2.10.1.jar] for annotations
org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19
at org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:97)
at org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:54)
at org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:174)
at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:83)
at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2053)
at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:2000)
at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1970)
at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1923)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1163)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:775)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:299)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:94)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5087)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
二月 27, 2020 9:34:33 上午 org.apache.catalina.startup.ContextConfig processAnnotationsJar
严重: Unable to process Jar entry [module-info.class] from Jar [file:/E:/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/chapter-03-2/WEB-INF/lib/jackson-datatype-jdk8-2.10.1.jar] for annotations
org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19
at org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:97)
at org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:54)
at org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:174)
at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:83)
at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2053)
at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:2000)
at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1970)
at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1923)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1163)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:775)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:299)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:94)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5087)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
二月 27, 2020 9:34:37 上午 org.apache.jasper.servlet.TldScanner scanJars
信息: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
二月 27, 2020 9:34:37 上午 org.apache.catalina.core.ApplicationContext log
信息: 2 Spring WebApplicationInitializers detected on classpath
Unable to process Jar entry [module-info.class] from Jar[file:/E:/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/信息后面可能跟的jar文件不同。
解决办法
出现这种问题，是因为我们启动工程的方式不对造成的，Spring Boot应用要在工程右键菜单中选择Run As->Spring Boot App的方式启动，启动后的日志如下：
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.3.0.M2)
2020-02-27 09:43:51.984 INFO 17252 --- [ main] com.cloud.skyme.Chapter032Application : Starting Chapter032Application on Sc-201506092204 with PID 17252 (E:\workspace\chapter-03-2\target\classes started by Administrator in E:\workspace\chapter-03-2)
2020-02-27 09:43:51.987 INFO 17252 --- [ main] com.cloud.skyme.Chapter032Application : No active profile set, falling back to default profiles: default
2020-02-27 09:43:52.615 INFO 17252 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2020-02-27 09:43:52.622 INFO 17252 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2020-02-27 09:43:52.622 INFO 17252 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.31]
2020-02-27 09:43:52.702 INFO 17252 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2020-02-27 09:43:52.702 INFO 17252 --- [ main] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 685 ms
2020-02-27 09:43:52.808 INFO 17252 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2020-02-27 09:43:52.908 INFO 17252 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2020-02-27 09:43:52.912 INFO 17252 --- [ main] com.cloud.skyme.Chapter032Application : Started Chapter032Application in 1.149 seconds (JVM running for 1.818)
这样基本就正常了。
