项目整合了websocket以后，打包多次都没有成功，原来是报错了，报错内容如下：Error starting ApplicationContext. To display the conditions report re-run your application with ‘debug‘ enabled.
org.springframework.boot.SpringApplication.reportFailure(SpringApplication.java:837) 2020-03-18 08:20:02,192 [main] ERROR pringApplication - Application run failed
org.springframework.beans.factory.BeanCreationE...
1package test_20_2;2 3import java.util.PriorityQueue;4 5publicclass PriorityQueueTest {6 7publicstaticvoid main(String[] args) {8 9 PriorityQueue<Double> priorityQueue = new PriorityQueue<Double>();
1011for (int i = 0; i < 10; i++) {
12double num = Math.random();
13 priorityQueue.offer(num);
14 }
15int len = priorityQueue.size();
1617for (int i = 0; i < len; i++) {
18 ...
Java异常处理003:Springboot启动报Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean异常异常日志 org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.context.ApplicationContextException: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFac...
题目：Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which together with x-axis forms a container, such that the container contains the most water.
Note: You may not slant the container.
题解： 这道题挺类似二分查找法的，这道题是先从两头开始...
Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which together with x-axis forms a container, such that the container contains the most water.Note: You may not slant the container.解题思路：本题是经典的“水箱”问题，最简单的方法是暴力枚举，时...
严重: Failed to initialize end point associated with ProtocolHandler ["http-bio-8080"]
java.net.BindException: Address already in use <null>:8080at org.apache.tomcat.util.net.JIoEndpoint.bind(JIoEndpoint.java:407)at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:623)at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:434)at org.apache.coyote.http11.AbstractHttp...
解放方法
下来查询官方文档后，才了解到yarn的日志监控功能默认是处于关闭状态的，需要我们进行开启，开启步骤如下：
Ps:下面配置的文件的位置在hadoop根目录 etc/haddop文件夹下，比较老版本的Hadoop是在hadoop根目录下的conf文件夹中本文hadoop配置环境目录： /usr/local/src/hadoop-2.6.5/etc/hadoop
一、在yarn-site.xml文件中添加日志监控支持
<property><name>yarn.log-aggregation-enable</name><value>true</value>
</prop...
我正在使用springs SimpleMessageListenerContainer来使用RabbitMQ队列中的消息.一切正常,但是当无效消息发送到队列(例如无效的json)时,侦听器将中止,关闭工作进程并且不接受任何其他消息.
是否可以将其配置为丢弃中断的消息并继续监听其他消息？
我正在使用sprint-rabbit-1.6.1.RELEASE.jar
我的配置如下所示：@Bean
public SimpleMessageListenerContainer container(ConnectionFactory connectionFactory,MessageListenerAdapte...
项目运行时发现报了这个错
Caused by: java.lang.IllegalStateException: ContainerBase.addChild:
start: org.apache.catalina.LifecycleException: 无法启动组件
[StandardEngine[Catalina].StandardHost[localhost].StandardContext[]]解决方案： 进入tomcat conf目录下，修改配置文件catalina.properties， 在108行tomcat.util.scan.StandardJarScanFilter.jarsToSkip=\ 后面加上* tomcat.util.scan.StandardJarScanFilter.ja...
黄底表示接口
白底表示普通类
红框表示常用容器
三角箭头表示某个类可以生成箭头所指向类的对象
菱形箭头表示一个特定的类实现了一个接口
Utilities表示实用工具
嗨,我在我的Web服务代码中遇到了以下异常情况,对此有何帮助？Jun 28, 2012 8:49:46 PM com.sun.jersey.spi.container.ContainerResponse mapMappableContainerException
SEVERE: The exception contained within MappableContainerException could not be mapped to a response, re-throwing to the HTTP container
java.lang.NoClassDefFoundError: Could not initialize class com.ibm.toro.utility.tenantconfig.DBManager ...
我正在尝试将一个简单的Spring Boot应用程序转换为war文件,以部署到我的tomcat服务器,但是我一直在遇到此错误：Caused by: org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'errorPageFilter': Initialization of bean failed; nested exception is java.lang.Class...
我在扩展JAX-RS应用程序的应用程序类中注册了两个ContainerRequestFilter过滤器和一个ContainerResponseFilter：
筛选为：register(LoggingResponseFilter.class);
register(AuthorizationRequestFilter.class);
register(LikeRequestFilter.class);当我尝试调用目标方法资源时,出现异常.
资源方法为：@Override
@POST
@Path("/{userId}/like")
@TokenResource
@GMTResource // to validate GMT of client and server
@Like ...
我无法进行简单的Arquillian测试.当我尝试使用GlassFish远程容器运行Arquillian时,出现以下错误：Jun 12, 2016 3:50:05 PM org.jboss.arquillian.container.impl.MapObject populate
WARNUNG: Configuration contain properties not supported by the backing object org.jboss.arquillian.container.glassfish.remote_3_1.GlassFishRestConfiguration
Unused property entries: {jbossHome=target/jboss-as-7.1.1.Final}
Supporte...
我最近升级到Spring Boot 2,我们的应用程序通过Bamboo部署到PCF上,运行正常,但是在部署阶段,我收到以下错误消息：java.lang.ClassNotFoundException: org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer我们在代码中的任何地方都没有使用EmbeddedServletContainerCustomizer类,我也不知道这是从哪里来的.想知道这是否是pom问题？
我在这里尝试了所有其他类似性质的问题.解决方法:org.springframework....
![[20-05-24][Thinking in Java 42]Java Container 14 - Summary of Collection - 文章图片](/upload/getfiles/0001/2021/5/1/20210501122539266.jpg)