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tomcat | open source implementation of the Java Servlet, JavaServer Pages | Continuous Deployment library

 by   apache Java Version: Current License: Apache-2.0

 by   apache Java Version: Current License: Apache-2.0

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kandi X-RAY | tomcat Summary

tomcat is a Java library typically used in Devops, Continuous Deployment, Spring Boot, Docker, Hibernate applications. tomcat has a Permissive License and it has high support. However tomcat has 1926 bugs, it has 24 vulnerabilities and it build file is not available. You can download it from GitHub.
The Apache Tomcat® software is an open source implementation of the Java Servlet, JavaServer Pages, Java Expression Language and Java WebSocket technologies. The Java Servlet, JavaServer Pages, Java Expression Language and Java WebSocket specifications are developed under the Java Community Process. The Apache Tomcat software is developed in an open and participatory environment and released under the Apache License version 2. The Apache Tomcat project is intended to be a collaboration of the best-of-breed developers from around the world. We invite you to participate in this open development project. To learn more about getting involved, click here or keep reading. Apache Tomcat software powers numerous large-scale, mission-critical web applications across a diverse range of industries and organizations. Some of these users and their stories are listed on the PoweredBy wiki page. Apache Tomcat, Tomcat, Apache, the Apache feather, and the Apache Tomcat project logo are trademarks of the Apache Software Foundation.
Support
Support
Quality
Quality
Security
Security
License
License
Reuse
Reuse

kandi-support Support

  • tomcat has a highly active ecosystem.
  • It has 5943 star(s) with 4074 fork(s). There are 488 watchers for this library.
  • It had no major release in the last 12 months.
  • tomcat has no issues reported. There are 10 open pull requests and 0 closed requests.
  • It has a negative sentiment in the developer community.
  • The latest version of tomcat is current.
tomcat Support
Best in #Continuous Deployment
Average in #Continuous Deployment
tomcat Support
Best in #Continuous Deployment
Average in #Continuous Deployment

quality kandi Quality

  • tomcat has 1926 bugs (52 blocker, 25 critical, 1396 major, 453 minor) and 11664 code smells.
tomcat Quality
Best in #Continuous Deployment
Average in #Continuous Deployment
tomcat Quality
Best in #Continuous Deployment
Average in #Continuous Deployment

securitySecurity

  • tomcat has 9 vulnerability issues reported (0 critical, 7 high, 2 medium, 0 low).
  • tomcat code analysis shows 15 unresolved vulnerabilities (4 blocker, 7 critical, 4 major, 0 minor).
  • There are 523 security hotspots that need review.
tomcat Security
Best in #Continuous Deployment
Average in #Continuous Deployment
tomcat Security
Best in #Continuous Deployment
Average in #Continuous Deployment

license License

  • tomcat is licensed under the Apache-2.0 License. This license is Permissive.
  • Permissive licenses have the least restrictions, and you can use them in most projects.
tomcat License
Best in #Continuous Deployment
Average in #Continuous Deployment
tomcat License
Best in #Continuous Deployment
Average in #Continuous Deployment

buildReuse

  • tomcat releases are not available. You will need to build from source code and install.
  • tomcat has no build file. You will be need to create the build yourself to build the component from source.
  • Installation instructions are available. Examples and code snippets are not available.
tomcat Reuse
Best in #Continuous Deployment
Average in #Continuous Deployment
tomcat Reuse
Best in #Continuous Deployment
Average in #Continuous Deployment
Top functions reviewed by kandi - BETA

kandi has reviewed tomcat and discovered the below as its top functions. This is intended to give you an instant insight into tomcat implemented functionality, and help decide if they suit your requirements.

  • Merges the given set of fragments .
  • Handles the lock request .
  • Serves a resource .
  • Moves forward state to next state
  • Moves forward starting from the first non - numeric state
  • Connects to the server .
  • Parse pool properties .
  • Post parse request .
  • Prepares the request header .
  • Parse a request line .

tomcat Key Features

Apache Tomcat

tomcat Examples and Code Snippets

Java RabbitMQ connection is already closed

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    try (Connection connection = factory.newConnection()){
        channel = connection.createChannel();
        channel.queueDeclare("logiweb", false, false, false, null);
    }

Getting 404 while trying to access endpoints using Jersey 3 and Tomcat 10

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<dependency>
    <groupId>org.glassfish.jersey.containers</groupId>
    <artifactId>jersey-container-servlet</artifactId>
    <version>3.0.2</version>
</dependency>

how does spring boot auto configure the driver of a special datasource?

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spring.jpa.hibernate.ddl-auto=update
spring.datasource.url=jdbc:mysql://${MYSQL_HOST:localhost}:3306/${DB_NAME}
spring.datasource.username=${MYSQL_USER}
spring.datasource.password=${MYSQL_PASSWORD}
spring.datasource.driver-class-name =com.mysql.jdbc.Driver
#spring.jpa.show-sql: true

javax.naming.NoInitialContextException: Need to specify class name in environment or system property Heroku deploy

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 <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.1</version>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
                <compilerArguments>
                    <endorseddirs>${endorsed.dir}</endorseddirs>
                </compilerArguments>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-war-plugin</artifactId>
            <version>2.3</version>
            <configuration>
                <failOnMissingWebXml>false</failOnMissingWebXml>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-dependency-plugin</artifactId>
            <version>2.3</version>
            <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>copy</goal>
                    </goals>
                    <configuration>
                        <artifactItems>
                            <artifactItem>
                                <groupId>com.github.jsimone</groupId>
                                <artifactId>webapp-runner</artifactId>
                                <version>8.5.11.2</version>
                                <destFileName>webapp-runner.jar</destFileName>
                            </artifactItem>
                            <artifactItem>
                                <groupId>org.apache.tomcat</groupId>
                                <artifactId>tomcat-dbcp</artifactId>
                                <version>8.0.33</version>
                            </artifactItem>
                        </artifactItems>
                    </configuration>
                </execution>
            </executions>
        </plugin>

        <plugin>
            <groupId>com.heroku.sdk</groupId>
            <artifactId>heroku-maven-plugin</artifactId>
            <version>1.1.3</version>
            <configuration>
                <appName>grow-up-project</appName>
                <processTypes>
                    <web>java $JAVA_OPTS -cp 'target/dependency/*' webapp.runner.launch.Main target/*.war --enable-naming --port $PORT</web>
                </processTypes>
            </configuration>
        </plugin>

html line &quot;. {&quot; is marked as an error in Eclipse when the html file is opened

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*{
        max-width: 370px;
        padding: 1px 1px 1px;
        background-color: #fff;
        border: 1px solid #e5e5e5;
        -webkit-border-radius: 5px;
           -moz-border-radius: 5px;
                border-radius: 5px;
        -webkit-box-shadow: 0 1px 2px rgba(0,0,0,.05);
           -moz-box-shadow: 0 1px 2px rgba(0,0,0,.05);
                box-shadow: 0 1px 2px rgba(0,0,0,.05);
      }

Spring batch AbstractJob Encountered Fatal Error - could not serialize the execution context

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@JsonDeserialize(using = LocalDateDeserializer.class)  
@JsonSerialize(using = LocalDateSerializer.class)  
private LocalDate dateOfBirth;

public class LocalDateDeserializer extends StdDeserializer<LocalDate> {

    private static final long serialVersionUID = 1L;

    protected LocalDateDeserializer() {
        super(LocalDate.class);
    }


    @Override
    public LocalDate deserialize(JsonParser jsonParser, DeserializationContext ctxt) throws IOException, JsonProcessingException {
        return LocalDate.parse(jsonParser.readValueAs(String.class));
    }

}

public class LocalDateSerializer extends StdSerializer<LocalDate> {

    private static final long serialVersionUID = 1L;

    public LocalDateSerializer(){
        super(LocalDate.class);
    }

    @Override
    public void serialize(LocalDate localDate, JsonGenerator jsonGenerator, SerializerProvider serProvider) throws IOException, JsonProcessingException {
        jsonGenerator.writeString(value.format(DateTimeFormatter.ISO_LOCAL_DATE));
    }
}
----------------------- 
@JsonDeserialize(using = LocalDateDeserializer.class)  
@JsonSerialize(using = LocalDateSerializer.class)  
private LocalDate dateOfBirth;

public class LocalDateDeserializer extends StdDeserializer<LocalDate> {

    private static final long serialVersionUID = 1L;

    protected LocalDateDeserializer() {
        super(LocalDate.class);
    }


    @Override
    public LocalDate deserialize(JsonParser jsonParser, DeserializationContext ctxt) throws IOException, JsonProcessingException {
        return LocalDate.parse(jsonParser.readValueAs(String.class));
    }

}

public class LocalDateSerializer extends StdSerializer<LocalDate> {

    private static final long serialVersionUID = 1L;

    public LocalDateSerializer(){
        super(LocalDate.class);
    }

    @Override
    public void serialize(LocalDate localDate, JsonGenerator jsonGenerator, SerializerProvider serProvider) throws IOException, JsonProcessingException {
        jsonGenerator.writeString(value.format(DateTimeFormatter.ISO_LOCAL_DATE));
    }
}
----------------------- 
@JsonDeserialize(using = LocalDateDeserializer.class)  
@JsonSerialize(using = LocalDateSerializer.class)  
private LocalDate dateOfBirth;

public class LocalDateDeserializer extends StdDeserializer<LocalDate> {

    private static final long serialVersionUID = 1L;

    protected LocalDateDeserializer() {
        super(LocalDate.class);
    }


    @Override
    public LocalDate deserialize(JsonParser jsonParser, DeserializationContext ctxt) throws IOException, JsonProcessingException {
        return LocalDate.parse(jsonParser.readValueAs(String.class));
    }

}

public class LocalDateSerializer extends StdSerializer<LocalDate> {

    private static final long serialVersionUID = 1L;

    public LocalDateSerializer(){
        super(LocalDate.class);
    }

    @Override
    public void serialize(LocalDate localDate, JsonGenerator jsonGenerator, SerializerProvider serProvider) throws IOException, JsonProcessingException {
        jsonGenerator.writeString(value.format(DateTimeFormatter.ISO_LOCAL_DATE));
    }
}

Error while running Springboot app in Kubernetes in Docket Desktop

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kubectl port-forward pods/demowar1 8085:8085

Where I am wrong? I am using Maven ProJect to make TODO application with hibernate ,JSP, SERVLET

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<property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
<property name="hibernate.connection.url">jdbc:oracle:thin:@localhost:1521:orcl</property> 
<property name="hibernate.connection.username">scott</property>
<property name="hibernate.connection.password">tiger</property>
----------------------- 
     <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.6</version>
    </dependency>

Exception while creating CRUD using Spring Boot + RestAPI + JPA + CrudRepository +MySQL

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public Movie addMovie(String movieName,Integer rating,String Genre);

Spring boot executes without error, however, no tables are created on the server

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spring.datasource.url=jdbc:mysql://localhost:3306/dbName
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.username=username
spring.datasource.password=password
spring.jpa.generate-ddl=true
spring.jpa.hibernate.ddl-auto=update
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5Dialect

Community Discussions

Trending Discussions on tomcat
  • Java RabbitMQ connection is already closed
  • Getting 404 while trying to access endpoints using Jersey 3 and Tomcat 10
  • ContextLoader - Root WebApplicationContext initialized 3 times on ubuntu tomcat
  • how does spring boot auto configure the driver of a special datasource?
  • javax.naming.NoInitialContextException: Need to specify class name in environment or system property Heroku deploy
  • Can connect to website through direct external ip adress, cannot through domain
  • org.springframework.security.web.access.AccessDeniedException: Access is Denied
  • Settings for VM using tomcat with intellij
  • html line &quot;. {&quot; is marked as an error in Eclipse when the html file is opened
  • Spring batch AbstractJob Encountered Fatal Error - could not serialize the execution context
Trending Discussions on tomcat

QUESTION

Java RabbitMQ connection is already closed

Asked 2021-Jun-15 at 10:14

I need to push messages to external rabbitmq. My java configuration successfully declares queue to push, but every time I try to push, I have next exception:

web_1       | com.rabbitmq.client.AlreadyClosedException: connection is already closed due to clean connection shutdown; protocol method: #method<connection.close>(reply-code=200, reply-text=OK, class-id=0, method-id=0)
web_1       |   at com.rabbitmq.client.impl.AMQChannel.ensureIsOpen(AMQChannel.java:258)
web_1       |   at com.rabbitmq.client.impl.AMQChannel.transmit(AMQChannel.java:427)
web_1       |   at com.rabbitmq.client.impl.ChannelN.basicPublish(ChannelN.java:710)
web_1       |   at com.rabbitmq.client.impl.ChannelN.basicPublish(ChannelN.java:685)
web_1       |   at com.rabbitmq.client.impl.ChannelN.basicPublish(ChannelN.java:675)
web_1       |   at com.rabbitmq.client.impl.recovery.AutorecoveringChannel.basicPublish(AutorecoveringChannel.java:207)
web_1       |   at com.ruddi.logiweb.service.impl.MQServiceImpl.send(MQServiceImpl.java:33)
web_1       |   at com.ruddi.logiweb.controller.DriverController.addDriver(DriverController.java:105)
web_1       |   at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
web_1       |   at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
web_1       |   at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
web_1       |   at java.base/java.lang.reflect.Method.invoke(Method.java:566)
web_1       |   at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:197)
web_1       |   at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:141)
web_1       |   at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106)
web_1       |   at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:894)
web_1       |   at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808)
web_1       |   at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
web_1       |   at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1060)
web_1       |   at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:962)
web_1       |   at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
web_1       |   at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
web_1       |   at javax.servlet.http.HttpServlet.service(HttpServlet.java:652)
web_1       |   at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
web_1       |   at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
web_1       |   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
web_1       |   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
web_1       |   at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
web_1       |   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
web_1       |   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
web_1       |   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320)
web_1       |   at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126)
web_1       |   at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90)
web_1       |   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
web_1       |   at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118)
web_1       |   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
web_1       |   at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137)
web_1       |   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
web_1       |   at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
web_1       |   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
web_1       |   at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158)
web_1       |   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
web_1       |   at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
web_1       |   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
web_1       |   at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:200)
web_1       |   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
web_1       |   at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116)
web_1       |   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
web_1       |   at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92)
web_1       |   at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77)
web_1       |   at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
web_1       |   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
web_1       |   at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105)
web_1       |   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
web_1       |   at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56)
web_1       |   at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
web_1       |   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
web_1       |   at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215)
web_1       |   at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178)
web_1       |   at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358)
web_1       |   at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271)
web_1       |   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
web_1       |   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
web_1       |   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
web_1       |   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
web_1       |   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
web_1       |   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
web_1       |   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
web_1       |   at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
web_1       |   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
web_1       |   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357)
web_1       |   at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)
web_1       |   at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
web_1       |   at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893)
web_1       |   at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1707)
web_1       |   at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
web_1       |   at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
web_1       |   at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
web_1       |   at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
web_1       |   at java.base/java.lang.Thread.run(Thread.java:829)

Bean:

@Bean("mqChannel")
    public Channel channel() {
        ConnectionFactory factory = new ConnectionFactory();

        String uri = "amqp://sxtswmgm:dh1N5aBEUnam53urt2VMrF9HSi7IDWAf@stingray.rmq.cloudamqp.com/sxtswmgm";

        try {
            factory.setUri(uri);
        }
        catch (Exception e) {
            e.printStackTrace();
        }
//        factory.setHost("rabbitmq");
//        factory.setPort(5672);
//        factory.setUsername("guest");
//        factory.setPassword("guest");

        Channel channel = null;

        try (Connection connection = factory.newConnection()){
            channel = connection.createChannel();
            channel.queueDeclare("logiweb", false, false, false, null);
        }
        catch(Exception e) {
            log.info("EXCEPTION IN BEAN");
            e.printStackTrace();
        }

        return channel;
    }

Sending message service class:

@Service
@Slf4j
public class MQServiceImpl implements MQService {
    Channel channel;

    @Autowired
    public MQServiceImpl(
            @Qualifier("mqChannel") Channel channel) {
        this.channel = channel;
    }

    /**
     * sending message to mq
     * @param message message to send
     */
    @Override
    public void send(String message) {
        log.info("send(message) method was called");
        try {
            channel.basicPublish("", "logiweb", null, message.getBytes());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

By the way, when I start rabbitmq locally it works perfectly. This problem appears when I use containerized rabbitmq or external cloudamqp

So, one more time, when I run my app I can see new queue in RabbitMQ dashboard (it was declared), but every try to push the message ends with exception.

ANSWER

Answered 2021-Jun-15 at 07:19

I'm struggling to understand how that code fits together, but this part strikes me as definitely wrong:

    try (Connection connection = factory.newConnection()){
        channel = connection.createChannel();
        channel.queueDeclare("logiweb", false, false, false, null);
    }

When the try block completes, the connection resource is going to be auto-closed. However the javadoc for Connection.close() states:

"Close this connection and all its channels with the AMQP.REPLY_SUCCESS close code and message 'OK'. Waits for all the close operations to complete."

So, the Channel that you have created will be closed before the channel() method returns it.

Source https://stackoverflow.com/questions/67981368

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

CVE-2020-11996 HIGH
A specially crafted sequence of HTTP/2 requests sent to Apache Tomcat 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35 and 8.5.0 to 8.5.55 could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on concurrent HTTP/2 connections, the server could become unresponsive.
CVE-2020-9484 HIGH
When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter="null" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.
CVE-2020-8022 HIGH
A Incorrect Default Permissions vulnerability in the packaging of tomcat on SUSE Enterprise Storage 5, SUSE Linux Enterprise Server 12-SP2-BCL, SUSE Linux Enterprise Server 12-SP2-LTSS, SUSE Linux Enterprise Server 12-SP3-BCL, SUSE Linux Enterprise Server 12-SP3-LTSS, SUSE Linux Enterprise Server 12-SP4, SUSE Linux Enterprise Server 12-SP5, SUSE Linux Enterprise Server 15-LTSS, SUSE Linux Enterprise Server for SAP 12-SP2, SUSE Linux Enterprise Server for SAP 12-SP3, SUSE Linux Enterprise Server for SAP 15, SUSE OpenStack Cloud 7, SUSE OpenStack Cloud 8, SUSE OpenStack Cloud Crowbar 8 allows local attackers to escalate from group tomcat to root. This issue affects: SUSE Enterprise Storage 5 tomcat versions prior to 8.0.53-29.32.1. SUSE Linux Enterprise Server 12-SP2-BCL tomcat versions prior to 8.0.53-29.32.1. SUSE Linux Enterprise Server 12-SP2-LTSS tomcat versions prior to 8.0.53-29.32.1. SUSE Linux Enterprise Server 12-SP3-BCL tomcat versions prior to 8.0.53-29.32.1. SUSE Linux Enterprise Server 12-SP3-LTSS tomcat versions prior to 8.0.53-29.32.1. SUSE Linux Enterprise Server 12-SP4 tomcat versions prior to 9.0.35-3.39.1. SUSE Linux Enterprise Server 12-SP5 tomcat versions prior to 9.0.35-3.39.1. SUSE Linux Enterprise Server 15-LTSS tomcat versions prior to 9.0.35-3.57.3. SUSE Linux Enterprise Server for SAP 12-SP2 tomcat versions prior to 8.0.53-29.32.1. SUSE Linux Enterprise Server for SAP 12-SP3 tomcat versions prior to 8.0.53-29.32.1. SUSE Linux Enterprise Server for SAP 15 tomcat versions prior to 9.0.35-3.57.3. SUSE OpenStack Cloud 7 tomcat versions prior to 8.0.53-29.32.1. SUSE OpenStack Cloud 8 tomcat versions prior to 8.0.53-29.32.1. SUSE OpenStack Cloud Crowbar 8 tomcat versions prior to 8.0.53-29.32.1.
CVE-2020-1938 CRITICAL
When using the Apache JServ Protocol (AJP), care must be taken when trusting incoming connections to Apache Tomcat. Tomcat treats AJP connections as having higher trust than, for example, a similar HTTP connection. If such connections are available to an attacker, they can be exploited in ways that may be surprising. In Apache Tomcat 9.0.0.M1 to 9.0.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99, Tomcat shipped with an AJP Connector enabled by default that listened on all configured IP addresses. It was expected (and recommended in the security guide) that this Connector would be disabled if not required. This vulnerability report identified a mechanism that allowed: - returning arbitrary files from anywhere in the web application - processing any file in the web application as a JSP Further, if the web application allowed file upload and stored those files within the web application (or the attacker was able to control the content of the web application by some other means) then this, along with the ability to process a file as a JSP, made remote code execution possible. It is important to note that mitigation is only required if an AJP port is accessible to untrusted users. Users wishing to take a defence-in-depth approach and block the vector that permits returning arbitrary files and execution as JSP may upgrade to Apache Tomcat 9.0.31, 8.5.51 or 7.0.100 or later. A number of changes were made to the default AJP Connector configuration in 9.0.31 to harden the default configuration. It is likely that users upgrading to 9.0.31, 8.5.51 or 7.0.100 or later will need to make small changes to their configurations.
CVE-2021-24122 MEDIUM
When serving resources from a network location using the NTFS file system, Apache Tomcat versions 10.0.0-M1 to 10.0.0-M9, 9.0.0.M1 to 9.0.39, 8.5.0 to 8.5.59 and 7.0.0 to 7.0.106 were susceptible to JSP source code disclosure in some configurations. The root cause was the unexpected behaviour of the JRE API File.getCanonicalPath() which in turn was caused by the inconsistent behaviour of the Windows API (FindFirstFileW) in some circumstances.
CVE-2020-1935 MEDIUM
In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely.
CVE-2020-17527 HIGH
While investigating bug 64830 it was discovered that Apache Tomcat 10.0.0-M1 to 10.0.0-M9, 9.0.0-M1 to 9.0.39 and 8.5.0 to 8.5.59 could re-use an HTTP request header value from the previous stream received on an HTTP/2 connection for the request associated with the subsequent stream. While this would most likely lead to an error and the closure of the HTTP/2 connection, it is possible that information could leak between requests.
CVE-2020-13943 MEDIUM
If an HTTP/2 client connecting to Apache Tomcat 10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37 or 8.5.0 to 8.5.57 exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it was possible that a subsequent request made on that connection could contain HTTP headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources.
CVE-2020-13935 HIGH
The payload length in a WebSocket frame was not correctly validated in Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M1 to 9.0.36, 8.5.0 to 8.5.56 and 7.0.27 to 7.0.104. Invalid payload lengths could trigger an infinite loop. Multiple requests with invalid payload lengths could lead to a denial of service.

Install tomcat

Please see RUNNING.txt for more info.

Support

The documentation available as of the date of this release is included in the docs webapp which ships with tomcat. You can access that webapp by starting tomcat and visiting http://localhost:8080/docs/ in your browser. The most up-to-date documentation for each version can be found at:.

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