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I'm creating a api rest with Tomcat 7.0 + Maven + Java EE + JDK 10.0.2 in eclipse and I got this error:

Error:

HTTP Status 500 - Servlet.init() for servlet api threw exception

type Exception report

message Servlet.init() for servlet api threw exception

description The server encountered an internal error that prevented it from fulfilling this request.

exception javax.servlet.ServletException: Servlet.init() for servlet api threw exception org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) java.base/java.lang.Thread.run(Thread.java:844)

root cause java.lang.IllegalArgumentException jersey.repackaged.org.objectweb.asm.ClassReader.(ClassReader.java:170) jersey.repackaged.org.objectweb.asm.ClassReader.(ClassReader.java:153) jersey.repackaged.org.objectweb.asm.ClassReader.(ClassReader.java:424) com.sun.jersey.spi.scanning.AnnotationScannerListener.onProcess(AnnotationScannerListener.java:138) com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner$2.f(WebAppResourcesScanner.java:104) com.sun.jersey.core.util.Closing.f(Closing.java:71) com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner.scan(WebAppResourcesScanner.java:102) com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner.scan(WebAppResourcesScanner.java:89) com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner.scan(WebAppResourcesScanner.java:89) com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner.scan(WebAppResourcesScanner.java:89) com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner.scan(WebAppResourcesScanner.java:89) com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner.scan(WebAppResourcesScanner.java:79) com.sun.jersey.api.core.ScanningResourceConfig.init(ScanningResourceConfig.java:80) com.sun.jersey.api.core.servlet.WebAppResourceConfig.init(WebAppResourceConfig.java:102) com.sun.jersey.api.core.servlet.WebAppResourceConfig.(WebAppResourceConfig.java:89) com.sun.jersey.api.core.servlet.WebAppResourceConfig.(WebAppResourceConfig.java:74) com.sun.jersey.spi.container.servlet.WebComponent.getWebAppResourceConfig(WebComponent.java:668) com.sun.jersey.spi.container.servlet.ServletContainer.getDefaultResourceConfig(ServletContainer.java:435) com.sun.jersey.spi.container.servlet.ServletContainer.getDefaultResourceConfig(ServletContainer.java:602) com.sun.jersey.spi.container.servlet.WebServletConfig.getDefaultResourceConfig(WebServletConfig.java:87) com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:699) com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:674) com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:205) com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:394) com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:577) javax.servlet.GenericServlet.init(GenericServlet.java:160) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) java.base/java.lang.Thread.run(Thread.java:844)

note The full stack trace of the root cause is available in the Apache Tomcat/7.0.47 logs.

Apache Tomcat/7.0.47

web.xml

 <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0"> <display-name>api</display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> <servlet> <servlet-name>api</servlet-name> <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>api</servlet-name> <url-pattern>/rest/*</url-pattern> </servlet-mapping> </web-app>

pom.xml

 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>api</groupId> <artifactId>api</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <build> <sourceDirectory>src</sourceDirectory> <plugins> <plugin> <artifactId>maven-compiler-plugin</artifactId> <version>3.7.0</version> <configuration> <release>10</release> </configuration> </plugin> <plugin> <artifactId>maven-war-plugin</artifactId> <version>3.2.1</version> <configuration> <warSourceDirectory>WebContent</warSourceDirectory> </configuration> </plugin> </plugins> </build> <dependencies> <dependency> <groupId>asm</groupId> <artifactId>asm</artifactId> <version>3.3.1</version> </dependency> <dependency> <groupId>com.sun.jersey</groupId> <artifactId>jersey-bundle</artifactId> <version>1.19.4</version> </dependency> <dependency> <groupId>org.json</groupId> <artifactId>json</artifactId> <version>20170516</version> </dependency> <dependency> <groupId>com.sun.jersey</groupId> <artifactId>jersey-server</artifactId> <version>1.19.4</version> </dependency> <dependency> <groupId>com.sun.jersey</groupId> <artifactId>jersey-core</artifactId> <version>1.19.4</version> </dependency> </dependencies> </project>
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  • What are you trying to do when the exception occurs? Commented Jul 28, 2018 at 23:39
  • @MiguelAlmeida - it happens on servlet initialization. See the stacktrace. Commented Jul 31, 2018 at 11:59

1 Answer 1

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After a bit of digging, I figured that the IllegalArgumentException is being thrown by Jersey's repackaged ASM library.

I can't be sure I have the right version, but at line 170, the code is like this:

 // checks the class version // added "support" for java 9 compiled classes if (readShort(off + 6) > Opcodes.V9) { throw new IllegalArgumentException(); }

The code is checking the classfile version number for the class it is attempting to read, and throwing IllegalArgumentException if it is too recent.

In short, you are trying to use some Java class that was compiled with a Java compiler that is too new for the ASM library:

  • Use an older JDK or set the -target version to be older.
  • Alternatively, find / install a version of Jersey that is certified for the Java version you are building for.

One thing that strikes me as odd is that you have an explicit dependency on an ancient version "asm" in your POM file. However, the stacktrace indicates that you are not using that version.

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