运行代码时出现错误，我不知道该错误意味着什么。我在Tomcat服务器8.5版上使用Eclipse。错误显示“ HTTP状态500 –内部服务器错误”。我已经尝试了所有方法，但根本无法运行。任何帮助将不胜感激。
这是代码
package test;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.ApplicationPath;
import javax.ws.rs.core.Application;
@Path("/hello")
public class Hello {
@GET
@Produces(MediaType.APPLICATION_JSON)
public String sayHelloJSon() {
String resource = null;
return resource;
}
@GET
@Produces(MediaType.TEXT_HTML)
public String sayHelloHTML(@QueryParam("name") String name, @QueryParam("Card_no") String Card_no, @QueryParam("amount") int amount) {
System.out.println("Name is " + name);
System.out.println("Amount is " + amount);
String response;
if(amount > 100000) {
System.out.println("Amount is greater than 1 Lakh");
response = "Credit card not approved";
}else {
System.out.println("Amount is lesser than 1 Lakh");
response = "Approved";
}
return "<html>" + "<title>" + "CC Authorization" + name + "</title>"
+ "<body><h1>" + response + "</h1></body>" + "</html>";
}
}
这是我得到的错误
Type Exception Report
Message Servlet.init() for servlet [JAVA API] threw exception
Description The server encountered an unexpected condition that prevented it from fulfilling the request.
Exception
javax.servlet.ServletException: Servlet.init() for servlet [JAVA API] threw exception
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:544)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:616)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:818)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1626)
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.base/java.lang.Thread.run(Thread.java:832)
Root Cause
java.lang.IllegalArgumentException
jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:170)
jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:153)
jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:424)
org.glassfish.jersey.server.internal.scanning.AnnotationAcceptingListener.process(AnnotationAcceptingListener.java:170)
org.glassfish.jersey.server.ResourceConfig.scanClasses(ResourceConfig.java:892)
org.glassfish.jersey.server.ResourceConfig._getClasses(ResourceConfig.java:849)
org.glassfish.jersey.server.ResourceConfig.getClasses(ResourceConfig.java:755)
org.glassfish.jersey.server.ResourceConfig$RuntimeConfig.<init>(ResourceConfig.java:1181)
org.glassfish.jersey.server.ResourceConfig$RuntimeConfig.<init>(ResourceConfig.java:1154)
org.glassfish.jersey.server.ResourceConfig.createRuntimeConfig(ResourceConfig.java:1150)
org.glassfish.jersey.server.ApplicationHandler.<init>(ApplicationHandler.java:318)
org.glassfish.jersey.server.ApplicationHandler.<init>(ApplicationHandler.java:285)
org.glassfish.jersey.servlet.WebComponent.<init>(WebComponent.java:311)
org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:170)
org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:358)
javax.servlet.GenericServlet.init(GenericServlet.java:158)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:544)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:616)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:818)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1626)
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.base/java.lang.Thread.run(Thread.java:832)
非常感谢您的帮助。谢谢！