我在阿里云上搭建了一套java运行环境 我吧项目放到tomcat里面项目也启动成功了 但是无法访问 10C

我在阿里云上搭建了一套java运行环境 我吧项目打成war包放到tomcat里面项目也启动成功了 但是无法访问 也不报错 安全组也设置了 防火墙也关了 就是访问不了咋回事
就直说拒绝了访问

5个回答

我在server。xml里面也改了默认ip是公网的

开放端口没有 centos 吗?

qq_38233650
沉在水底的鱼 哦,好吧,解决就好
大约一年之前 回复
syso_love
syso_love 是tomcat没有配置项目路径 解决了
大约一年之前 回复
qq_38233650
沉在水底的鱼 那是那段话开放端口,重启防火墙
大约一年之前 回复
qq_38233650
沉在水底的鱼 firewall-cmd --zone=public --add-port=8080/tcp --permanent firewall-cmd --reload //8080你开放的端口
大约一年之前 回复
qq_38233650
沉在水底的鱼 firewall-cmd --zone=public --add-port=8080/tcp --permanent firewall-cmd --reload
大约一年之前 回复
qq_38233650
沉在水底的鱼 firewall-cmd --zone=public --add-port=8080/tcp --permanent firewall-cmd --reload
大约一年之前 回复
syso_love
syso_love 在配置完tomcat 我是可以访问tomcat的 我是访问不了部署的项目 不是访问不了tomcat
大约一年之前 回复
syso_love
syso_love 安全组端口也设置了 防火墙也关了
大约一年之前 回复

国内地址的话需要备案,不备案肯定会拒绝访问。

分为两种情况:
第一种、你是使用外网访问你的项目的,你必须要有外网ip,如果是网址,还需要DNS解析,还有设置你的路由器等等,还有一种办法,阿里云自己有一个叫负载均衡的,你可以自己用你的ip访问你的项目了。
第二种、用本机访问Tomcat,这个的话就比较简单,出错的话,可以直接看Tomcat的报错日志,根据报错的问题解决就好了,具体问题还是看你的报错。

云主机的防火墙有两层,一层是系统自身的,一层是网页登陆控制台的那一层,两层都需要开放端口才可以。最好先尝试访问Tomcat8080端口主页看是否Ok,如果只是慢的话,可以看看这个
https://blog.csdn.net/u013361107/article/details/80826092

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Restarting services possibly affected by the upgrade: invoke-rc.d: could not determine current runlevel Services restarted successfully. Processing triggers for systemd (237-3ubuntu10.21) ... Setting up libhtml-parser-perl (3.72-3build1) ... Setting up libcgi-pm-perl (4.38-1) ... Processing triggers for man-db (2.8.3-2ubuntu0.1) ... Setting up mysql-client-core-5.7 (5.7.28-0ubuntu0.18.04.4) ... Setting up libfcgi-perl (0.78-2build1) ... Setting up libhttp-date-perl (6.02-1) ... Setting up libhtml-template-perl (2.97-1) ... Setting up mysql-server-core-5.7 (5.7.28-0ubuntu0.18.04.4) ... Setting up libcgi-fast-perl (1:2.13-1) ... Setting up libhttp-message-perl (6.14-1) ... Setting up mysql-client-5.7 (5.7.28-0ubuntu0.18.04.4) ... Setting up mysql-server-5.7 (5.7.28-0ubuntu0.18.04.4) ... invoke-rc.d: could not determine current runlevel * Stopping MySQL database server mysqld [ OK ] update-alternatives: using /etc/mysql/mysql.cnf to provide /etc/mysql/my.cnf (my.cnf) in auto mode Renaming removed key_buffer and myisam-recover options (if present) Cannot open /proc/net/unix: No such file or directory Cannot stat file /proc/1/fd/5: Operation not permitted Cannot stat file /proc/1/fd/10: Operation not permitted Cannot stat file /proc/1/fd/6: Operation not permitted Cannot stat file /proc/7/fd/7: Operation not permitted Cannot stat file /proc/7/fd/10: Operation not permitted Cannot stat file /proc/7/fd/5: Operation not permitted Created symlink /etc/systemd/system/multi-user.target.wants/mysql.service → /lib/systemd/system/mysql.service. invoke-rc.d: could not determine current runlevel Setting up mysql-server (5.7.28-0ubuntu0.18.04.4) ... Processing triggers for libc-bin (2.27-3ubuntu1) ... Processing triggers for ureadahead (0.100.0-21) ... Processing triggers for systemd (237-3ubuntu10.21) ... ``` 2.启动mysql服务 ``` root@PC-5200:/home/tom# systemctl start mysql.service ``` 3.出现如下报错 ``` System has not been booted with systemd as init system (PID 1). Can't operate. ```
哪位大佬给我解答一下淘宝京东是怎么保证登录密码安全的
哪位大佬给我解答一下淘宝京东是怎么保证登录密码安全的. 如果是在页面上做了加密,那我看他的js代码是不是能看到他的加密算法. 如果是证书加密是不是也能看加密算法? 如果看不到他的加密算法,那我拦截他的登录请求是不是能够看到密文? 如果拦截到了登录密文那我自己写代码发送账号和他的密码密文是不是能 登录上? 还有java中生成的证书和在CA机构申请的证书有什么不同? 悬赏80分期望大佬能说的仔细些.
The Bookcase
Problem Description No wonder the old bookcase caved under the massive piles of books Tom had stacked on it. He had better build a new one, this time large enough to hold all of his books. Tomfinds it practical to have the books close at hand when he works at his desk. Therefore, he is imagining a compact solution with the bookcase standing on the back of the desk. Obviously, this would put some restrictions on the size of the bookcase, it should preferably be as small as possible. In addition, Tom would like the bookcase to have exactly three shelves for aesthetical reasons. Wondering how small his bookcase could be, he models the problem as follows. He measures the height hi and thickness ti of each book i and he seeks a partition of the books in three non-empty sets S1, S2, S3 such that is minimized, i.e. the area of the bookcase as seen when standing in front of it (the depth needed is obviously the largest width of all his books, regardless of the partition). Note that this formula does not give the exact area of the bookcase, since the actual shelves cause a small additional height, and the sides cause a small additional width. For simplicity, we will ignore this small discrepancy. Thinking a moment on the problem, Tom realizes he will need a computer program to do the job. Input The input begins with a positive number on a line of its own telling the number of test cases (at most 20). For each test case there is one line containing a single positive integer N, 3 <= N <= 70 giving the number of books. Then N lines follow each containing two positive integers hi, ti, satisfying 150 <= hi <= 300 and 5 <= ti <= 30, the height and thickness of book i respectively, in millimeters. Output For each test case, output one line containing the minimum area (height times width) of a three-shelf bookcase capable of holding all the books, expressed in square millimeters. Sample Input 2 4 220 29 195 20 200 9 180 30 6 256 20 255 30 254 15 253 20 252 15 251 9 Sample Output 18000 29796
用AES解密中用到问题,线下本地可以,线上就出现了问题,怎么解决
本人开发小程序对encryptedData解密出现的问题 线下本地可以没有报错,线上就出现了问题! ![图片说明](https://img-ask.csdn.net/upload/201909/13/1568352145_29303.png) 我jar包是有这个JCEPERKey类的,就是运行时JVM找不到,线下本地运行环境是window,线上服务器运行环境是linux,是运行环境的问题吗,很是挠头!
eclipse运行struts2的代码提示:有两处报错,请问要怎么解决呢?
我在学习ognl的内容,照着老师的代码写了个测试程序。 ![图片说明](https://img-ask.csdn.net/upload/201911/03/1572768833_766389.png)![图片说明](https://img-ask.csdn.net/upload/201911/03/1572768841_759376.png) 但是现在有两处报错,我不知道是为什么。。。 1、 ![图片说明](https://img-ask.csdn.net/upload/201911/03/1572768871_116255.png) 2、这个错误,我查了下资料,好像是有些包的版本不匹配造成的。 ![图片说明](https://img-ask.csdn.net/upload/201911/03/1572768885_856680.png) 请问大神们,是怎么回事,要怎么解决呢?
java的过滤器报错 Cannot forward after response has been committed,怎么解决??
![图片说明](https://img-ask.csdn.net/upload/201910/30/1572436632_91736.png)![图片说明](https://img-ask.csdn.net/upload/201910/30/1572436656_541064.png)问题如下图,大佬们帮忙看看 急!!
eclipse导入Java源码后不显示代码只有注释。
![图片说明](https://img-ask.csdn.net/upload/201910/07/1570449830_613223.png)
新手提问,十万火急:eclipse中启动服务器报错
以前运行好好的,现在不能启动了,不知道怎么回事,网上也找不到原因,求大神们帮忙解决一下,十分感谢!! <br><br><br> Server Tomcat v8.0 Server at localhost failed to start. ![图片说明](https://img-ask.csdn.net/upload/201909/21/1569074501_604160.png) <br><br><br> 有人说是配置文件问题,看一下。。 <br><br><br> ![图片说明](https://img-ask.csdn.net/upload/201909/21/1569074681_560506.png) <br><br><br> 报错信息比较多,我复制一下:<br><br><br> ``` 九月 21, 2019 10:06:36 下午 org.apache.tomcat.util.digester.SetPropertiesRule begin 警告: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:testssm' did not find a matching property. 九月 21, 2019 10:06:36 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Server version: Apache Tomcat/8.0.52 九月 21, 2019 10:06:36 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Server built: Apr 28 2018 16:24:29 UTC 九月 21, 2019 10:06:36 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Server number: 8.0.52.0 九月 21, 2019 10:06:36 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: OS Name: Windows 7 九月 21, 2019 10:06:36 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: OS Version: 6.1 九月 21, 2019 10:06:36 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Architecture: x86 九月 21, 2019 10:06:36 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Java Home: C:\Java\jdk\jre 九月 21, 2019 10:06:36 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: JVM Version: 1.8.0_65-b17 九月 21, 2019 10:06:36 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: JVM Vendor: Oracle Corporation 九月 21, 2019 10:06:36 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: CATALINA_BASE: C:\code\.metadata\.plugins\org.eclipse.wst.server.core\tmp0 九月 21, 2019 10:06:36 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: CATALINA_HOME: C:\tomcat\apache-tomcat-8.0.52 九月 21, 2019 10:06:36 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dcatalina.base=C:\code\.metadata\.plugins\org.eclipse.wst.server.core\tmp0 九月 21, 2019 10:06:36 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dcatalina.home=C:\tomcat\apache-tomcat-8.0.52 九月 21, 2019 10:06:36 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dwtp.deploy=C:\tomcat\apache-tomcat-8.0.52\webapps 九月 21, 2019 10:06:36 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Djava.endorsed.dirs=C:\tomcat\apache-tomcat-8.0.52\endorsed 九月 21, 2019 10:06:36 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dfile.encoding=GBK 九月 21, 2019 10:06:36 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent 信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Java\jdk\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:/Java/jdk/bin/../jre/bin/client;C:/Java/jdk/bin/../jre/bin;C:/Java/jdk/bin/../jre/lib/i386;C:\Java\jdk\bin;C:\Java\apache-maven-3.5.3\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Intel\OpenCL SDK\2.0\bin\x86;C:\Program Files (x86)\Intel\OpenCL SDK\2.0\bin\x64;C:\Program Files\Git\cmd;C:\code\eclipse;;. 九月 21, 2019 10:06:36 下午 org.apache.coyote.AbstractProtocol init 信息: Initializing ProtocolHandler ["http-nio-8080"] 九月 21, 2019 10:06:36 下午 org.apache.tomcat.util.net.NioSelectorPool getSharedSelector 信息: Using a shared selector for servlet write/read 九月 21, 2019 10:06:36 下午 org.apache.coyote.AbstractProtocol init 信息: Initializing ProtocolHandler ["ajp-nio-8009"] 九月 21, 2019 10:06:36 下午 org.apache.tomcat.util.net.NioSelectorPool getSharedSelector 信息: Using a shared selector for servlet write/read 九月 21, 2019 10:06:36 下午 org.apache.catalina.startup.Catalina load 信息: Initialization processed in 680 ms 九月 21, 2019 10:06:36 下午 org.apache.catalina.core.StandardService startInternal 信息: Starting service Catalina 九月 21, 2019 10:06:36 下午 org.apache.catalina.core.StandardEngine startInternal 信息: Starting Servlet Engine: Apache Tomcat/8.0.52 九月 21, 2019 10:06:37 下午 org.apache.catalina.util.SessionIdGeneratorBase createSecureRandom 警告: Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [125] milliseconds. 九月 21, 2019 10:06:37 下午 org.apache.catalina.core.ContainerBase startInternal 严重: A child container failed during start java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/testssm]] at java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.util.concurrent.FutureTask.get(FutureTask.java:192) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:945) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:871) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1410) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1400) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/testssm]] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162) ... 6 more Caused by: org.apache.catalina.LifecycleException: Failed to start component [org.apache.catalina.webresources.StandardRoot@fdd2b1] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162) at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:5016) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5149) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) ... 6 more Caused by: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.JarResourceSet@154fd45] at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:107) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:135) at org.apache.catalina.webresources.StandardRoot.startInternal(StandardRoot.java:722) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) ... 9 more Caused by: java.lang.IllegalArgumentException: java.util.zip.ZipException: invalid LOC header (bad signature) at org.apache.catalina.webresources.AbstractSingleArchiveResourceSet.initInternal(AbstractSingleArchiveResourceSet.java:142) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102) ... 12 more Caused by: java.util.zip.ZipException: invalid LOC header (bad signature) at java.util.zip.ZipFile.read(Native Method) at java.util.zip.ZipFile.access$1400(ZipFile.java:60) at java.util.zip.ZipFile$ZipFileInputStream.read(ZipFile.java:716) at java.util.zip.ZipFile$ZipFileInflaterInputStream.fill(ZipFile.java:419) at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:158) at sun.misc.IOUtils.readFully(IOUtils.java:65) at java.util.jar.JarFile.getBytes(JarFile.java:425) at java.util.jar.JarFile.getManifestFromReference(JarFile.java:193) at java.util.jar.JarFile.getManifest(JarFile.java:180) at org.apache.catalina.webresources.AbstractSingleArchiveResourceSet.initInternal(AbstractSingleArchiveResourceSet.java:140) ... 13 more 九月 21, 2019 10:06:37 下午 org.apache.catalina.core.ContainerBase startInternal 严重: A child container failed during start java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]] at java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.util.concurrent.FutureTask.get(FutureTask.java:192) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:945) at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.core.StandardService.startInternal(StandardService.java:441) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:789) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.startup.Catalina.start(Catalina.java:641) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:349) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:483) Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1410) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1400) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Caused by: org.apache.catalina.LifecycleException: A child container failed during start at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:953) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:871) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) ... 6 more 九月 21, 2019 10:06:37 下午 org.apache.catalina.startup.Catalina start 严重: The required Server component failed to start so Tomcat is unable to start. org.apache.catalina.LifecycleException: Failed to start component [StandardServer[8005]] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162) at org.apache.catalina.startup.Catalina.start(Catalina.java:641) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:349) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:483) Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardService[Catalina]] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:789) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) ... 7 more Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina]] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162) at org.apache.catalina.core.StandardService.startInternal(StandardService.java:441) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) ... 9 more Caused by: org.apache.catalina.LifecycleException: A child container failed during start at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:953) at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) ... 11 more 九月 21, 2019 10:06:37 下午 org.apache.coyote.AbstractProtocol pause 信息: Pausing ProtocolHandler ["http-nio-8080"] 九月 21, 2019 10:06:37 下午 org.apache.coyote.AbstractProtocol pause 信息: Pausing ProtocolHandler ["ajp-nio-8009"] 九月 21, 2019 10:06:37 下午 org.apache.catalina.core.StandardService stopInternal 信息: Stopping service Catalina 九月 21, 2019 10:06:37 下午 org.apache.coyote.AbstractProtocol destroy 信息: Destroying ProtocolHandler ["http-nio-8080"] 九月 21, 2019 10:06:37 下午 org.apache.coyote.AbstractProtocol destroy 严重: Failed to destroy end point associated with ProtocolHandler ["http-nio-8080"] java.lang.NullPointerException at org.apache.tomcat.util.net.NioEndpoint.releaseCaches(NioEndpoint.java:315) at org.apache.tomcat.util.net.NioEndpoint.unbind(NioEndpoint.java:491) at org.apache.tomcat.util.net.AbstractEndpoint.destroy(AbstractEndpoint.java:896) at org.apache.coyote.AbstractProtocol.destroy(AbstractProtocol.java:551) at org.apache.catalina.connector.Connector.destroyInternal(Connector.java:1023) at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:292) at org.apache.catalina.core.StandardService.destroyInternal(StandardService.java:589) at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:292) at org.apache.catalina.core.StandardServer.destroyInternal(StandardServer.java:879) at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:292) at org.apache.catalina.startup.Catalina.start(Catalina.java:645) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:349) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:483) 九月 21, 2019 10:06:37 下午 org.apache.coyote.AbstractProtocol destroy 信息: Destroying ProtocolHandler ["ajp-nio-8009"] 九月 21, 2019 10:06:37 下午 org.apache.coyote.AbstractProtocol destroy 严重: Failed to destroy end point associated with ProtocolHandler ["ajp-nio-8009"] java.lang.NullPointerException at org.apache.tomcat.util.net.NioEndpoint.releaseCaches(NioEndpoint.java:315) at org.apache.tomcat.util.net.NioEndpoint.unbind(NioEndpoint.java:491) at org.apache.tomcat.util.net.AbstractEndpoint.destroy(AbstractEndpoint.java:896) at org.apache.coyote.AbstractProtocol.destroy(AbstractProtocol.java:551) at org.apache.catalina.connector.Connector.destroyInternal(Connector.java:1023) at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:292) at org.apache.catalina.core.StandardService.destroyInternal(StandardService.java:589) at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:292) at org.apache.catalina.core.StandardServer.destroyInternal(StandardServer.java:879) at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:292) at org.apache.catalina.startup.Catalina.start(Catalina.java:645) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:349) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:483) ```
jfreechart 折线图,xy轴值显示如何隐藏
![图片说明](https://img-ask.csdn.net/upload/201910/31/1572502649_583780.png) 如何给图中的200隐藏掉
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