本文将带您了解关于语法错误：Unknownword(8:3)请在reactJS的新内容，另外，我们还将为您提供关于Activiti表达式报错：Unknownpropertyusedinexpressi
本文将带您了解关于语法错误：Unknown word (8:3) 请在 react JS的新内容，另外，我们还将为您提供关于Activiti 表达式报错：Unknown property used in expression、ffmpeg推流时，可能出现错误：Unknown encoder ''libx264''、java.net.UnknownHostException: xxx: Name or service not known、java.net.UnknownHostException：Test：Test：unknown error无法获取VMID的本地InetAddress的实用信息。
本文目录一览：- 语法错误：Unknown word (8:3) 请在 react JS
- Activiti 表达式报错：Unknown property used in expression
- ffmpeg推流时，可能出现错误：Unknown encoder ''libx264''
- java.net.UnknownHostException: xxx: Name or service not known
- java.net.UnknownHostException：Test：Test：unknown error无法获取VMID的本地InetAddress
语法错误：Unknown word (8:3) 请在 react JS
如何解决语法错误：Unknown word (8:3) 请在 react JS？
这是我的 css 文件（react js）
body {
margin: 0;
font-family: -apple-system,BlinkMacSystemFont,''Segoe UI'',''Roboto'',''Oxygen'',''Ubuntu'',''Cantarell'',''Fira Sans'',''Droid Sans'',''Helvetica Neue'',sans-serif;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;\
background: linear-gradient(to left,rgba(7,27,82,1) 0%,rgba(0,128,1) 100%),}
code {
font-family: source-code-pro,Menlo,Monaco,Consolas,''Courier New'',monospace;
}
请任何人帮忙，因为我是 react js 的初学者
./src/index.css (./node_modules/css-loader/dist/cjs.js??ref--5-oneOf-4-1!./node_modules/postcss-loader/src??postcss!./src/index.css)
Syntax error: UnkNown word (8:3) webkit-font-smoothing: antialiased;
7 | -moz-osx-font-smoothing: grayscale;\
> 8 | background: linear-gradient(to left,| ^
9 |
10 | }***strong text***
此错误发生在构建期间我收到此错误
解决方法
暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！
如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。
小编邮箱:dio#foxmail.com (将#修改为@）
Activiti 表达式报错：Unknown property used in expression
public class Leave implements Serializable{
private static final long serialVersionUID = 1L;
private String name;
private Integer day;
private Integer total = 0;
// 省略 set,get
}
bpmn 里面配置的是：
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${reason[0].total < 10}]]></conditionExpression>
启动流程实例的时候，是这样的
Map<String, Object> vars = new HashMap<>();
vars.put ("reason", Arrays.asList (new Leave ("白展堂", 2)));
processEngine.getRuntimeService().startProcessInstanceByKey("dingcan", vars);
随后，执行报错
org.activiti.engine.ActivitiException: Unknown property used in expression: ${reason[0].total < 10} at org.activiti.engine.impl.el.JuelExpression.getValue(JuelExpression.java:53) at org.activiti.engine.impl.el.UelExpressionCondition.evaluate(UelExpressionCondition.java:37) at org.activiti.engine.impl.bpmn.behavior.InclusiveGatewayActivityBehavior.execute(InclusiveGatewayActivityBehavior.java:63) at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(AtomicOperationActivityExecute.java:60) at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:96) at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:621) at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:616) at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerStart.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerStart.java:52) at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56) at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:96) at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:621) at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:616) at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:49) at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:96) at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:621)
请问，这是什么错
ffmpeg推流时，可能出现错误：Unknown encoder ''libx264''
使用如下命令推流时：
ffmpeg -re -i a.mp4 -vcodec libx264 -acodec aac -f flv rtmp://172.31.102.165:1935/myapp
可能会出现如下错误：
Unknown encoder ''libx264''
即，缺少libx264库，需要安装该库：
1. git clone git://git.videolan.org/x264.git
2. cd x264
3. ./configure --enable-static --enable-share
4. make
5. sudo make install
需要重新编译安装ffmpeg
1. 配置ffmpeg时，加上x264，如：
./configure --enable-gpl --enable-libx264
2. make clean
3. make
4. make install
此时，输入ffmpeg时，可能会出现错误：
ffmpeg: error while loading shared libraries: libavdevice.so.57: cannot open shared object file: No such file or directory
*****************************************
修改ld.so.conf文件
1. $ sudo vi /etc/ld.so.conf
2. 修改如下
include ld.so.conf.d/*.conf
/usr/local/ffmpeg/lib ///usr/local/ffmpeg 目录是我ffmpeg安装目录，根据你的安装目录改吧
3. 使之生效
$ sudo ldconfig
*****************************************
为 Ffmpeg 加入环境变量
vi /etc/profile
加入以下内容:
export PATH="/usr/local/ffmpeg/bin:$PATH"
然后保存并运行source /etc/profile
若还提示缺少libx264，则需要进到编译ffmpeg目录，使用如下命令推流：
./ffmpeg -re -i a.mp4 -vcodec libx264 -acodec aac -f flv rtmp://172.31.102.165:1935/myapp
java.net.UnknownHostException: xxx: Name or service not known
ubuntu 14.04 x64
kafka 启动报错
java.net.UnknownHostException: iZ2zee1przeygbuu4rkwvxZ: Name or service not known
解决方案：
修改 /etc/hosts 文件如下：
iZ2zee1przeygbuu4rkwvxZ 即为主机名，要保证 /etc/hostname 和 /etc/hosts 中的 127.0.0.1 主机名相同
java.net.UnknownHostException：Test：Test：unknown error无法获取VMID的本地InetAddress
[com.mchange.v2.c3p0.impl.C3P0ImplUtils] INFO - Failed to get local InetAddress for VMID. This is unlikely to matter. At all. We'll add some extra randomness
java.net.UnkNownHostException: Test: Test: unkNown error
at java.net.InetAddress.getLocalHost(InetAddress.java:1484)
at com.mchange.v2.c3p0.impl.C3P0ImplUtils.generateVmId(C3P0ImplUtils.java:120)
at com.mchange.v2.c3p0.impl.C3P0ImplUtils.<clinit>(C3P0ImplUtils.java:98)
at com.mchange.v2.c3p0.impl.PoolBackedDataSourceBase.<init>(PoolBackedDataSourceBase.java:227)
at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.<init>(AbstractPoolBackedDataSource.java:62)
at com.mchange.v2.c3p0.ComboPooledDataSource.<init>(ComboPooledDataSource.java:109)
at com.mchange.v2.c3p0.ComboPooledDataSource.<init>(ComboPooledDataSource.java:105)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:148)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:89)
at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.instantiateBean(AbstractAutowireCapablebeanfactory.java:1069)
at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.createBeanInstance(AbstractAutowireCapablebeanfactory.java:1021)
at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.doCreateBean(AbstractAutowireCapablebeanfactory.java:504)
at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.createBean(AbstractAutowireCapablebeanfactory.java:475)
at org.springframework.beans.factory.support.Abstractbeanfactory$1.getobject(Abstractbeanfactory.java:304)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.Abstractbeanfactory.doGetBean(Abstractbeanfactory.java:300)
at org.springframework.beans.factory.support.Abstractbeanfactory.getBean(Abstractbeanfactory.java:195)
at org.springframework.beans.factory.support.DefaultListablebeanfactory.preInstantiateSingletons(DefaultListablebeanfactory.java:703)
at org.springframework.context.support.AbstractApplicationContext.finishbeanfactoryInitialization(AbstractApplicationContext.java:760)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
at org.springframework.web.context.ContextLoaderListener.contextinitialized(ContextLoaderListener.java:106)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4973)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5467)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$startChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$startChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.UnkNownHostException: Test: unkNown error
at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:907)
at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1302)
at java.net.InetAddress.getLocalHost(InetAddress.java:1479)
... 35 more
有谁知道这个错误是什么？
我的spring-datasource.xml文件有：
<!-- <context:property-placeholder location="/WEB-INF/spring.properties"></context:property-placeholder> -->
<bean id="dataSource"destroy-method="close"
p:driverhttps://www.jb51.cc/tag/MysqL/" target="_blank">MysqL.jdbc.Driver"
p:jdbcUrl="jdbc:MysqL://localhost:3306/test2"
p:user="root"
p:password="root"
p:acquireIncrement="5"
p:idleConnectionTestPeriod="60"
p:maxPoolSize="100"
p:maxStatements="50"
p:minPoolSize="10" />
和pom.xml：
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>
解决方法
VMID部分由运行它的主机的Internet地址确定.所以c3p0调用java.net.InetAddress.getLocalHost()来查找.但是,由于安全原因或某些配置错误,对java.net.InetAddress.getLocalHost()的调用可能会异常失败.
所有这一切都是可怕的,可怕的矫枉过正.写完之后,我很害羞,但是我在理论上认为identityTokens可能会发生冲突,违反了一个identityToken应该映射到一个唯一池的不变量的可能性.所以,就是这样.
所以,我们找不到本地地址.哎呀.我们回过头来为我们将为您正在运行的VM生成的VMID添加一堆随机性,以减少在实践中已经无限的冲突可能性.然后我们继续前进.正如错误消息所说,“这不太重要.完全没问题.”
如果您想让错误消失,您需要解决导致调用getLocalHost()的问题在您的环境中失败.但你真的可以忽略这一点.
(看起来你的环境是IPv6,它可能与它有关.我应该研究一下这个代码是否适合在VMID中包含IPv6地址.但是你的代码还远远不够. )
关于语法错误：Unknown word (8:3) 请在 react JS的介绍已经告一段落，感谢您的耐心阅读，如果想了解更多关于Activiti 表达式报错：Unknown property used in expression、ffmpeg推流时，可能出现错误：Unknown encoder ''libx264''、java.net.UnknownHostException: xxx: Name or service not known、java.net.UnknownHostException：Test：Test：unknown error无法获取VMID的本地InetAddress的相关信息，请在本站寻找。
本文标签：
