SpringToolSuite4 建立boot<em>项目</em>yml<em>文件</em> alt+/ 提示 org.eclipse.lsp4j.jsonrpc.ResponseErrorException: Internal error.
在error log<em>中</em>报错信息如下
java.util.concurrent.ExecutionException: org.eclipse.lsp4j.jsonrpc.ResponseErrorException: Internal error.
at java.util.concurrent.CompletableFuture.reportGet(Unknown Source)
at java.util.concurrent.CompletableFuture.get(Unknown Source)
at org.eclipse.lsp4e.operations.completion.LSContentAssistProcessor.computeCompletionProposals(LSContentAssistProcessor.java:96)
at org.eclipse.jface.text.contentassist.AsyncCompletionProposalPopup$2.run(AsyncCompletionProposalPopup.java:352)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
at org.eclipse.jface.text.contentassist.AsyncCompletionProposalPopup.lambda$8(AsyncCompletionProposalPopup.java:349)
at java.util.concurrent.CompletableFuture$AsyncSupply.run(Unknown Source)
at java.util.concurrent.CompletableFuture$AsyncSupply.exec(Unknown Source)
at java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(Unknown Source)
at java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
at java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)
Caused by: org.eclipse.lsp4j.jsonrpc.ResponseErrorException: Internal error.
at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleResponse(RemoteEndpoint.java:209)
at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:193)
at org.eclipse.lsp4e.LanguageServerWrapper.lambda$1(LanguageServerWrapper.java:214)
at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)
at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
导出资源描述
比如，可以将系统<em>中</em>nginx部署的描述导成yaml<em>文件</em>。
kubectl get pod zhaaa-nginx-rc-qcpss -o yaml
还可以导入到<em>文件</em><em>中</em>
kubectl get pod zhaaa-nginx-rc-qcpss -o yaml > zzz.yaml
...
最近在使用springboot的value注解读取yml格式<em>文件</em>时出现 Could not resolve placeholder 'my.name' in value "${my.name}"，经过排查发现问题出现在yml<em>文件</em>编写时，应该在属性名后的冒号之后加一个空格，再填写属性值，否则就会出现如上错误。
...
1.pycharm和python环境是分开安装yaml
本次进入https://pyyaml.org/wiki/Py<em>YAML</em>，下载对应版本的pyyaml,
2.在安装过程<em>中</em>，可能会提示
you are using pip version 10.0.1, however version 19.2.2 is available.
故需要对pip进行升级，采用python -m pip ...
<em>YAML</em>是一种直观的能够被电脑识别的的数据序列化格式，容易被人类阅读，并且容易和脚本语言交互。<em>YAML</em>类似于XML，但是语法比XML简单得多，对于转化成数组或可以hash的数据时是很简单有效的。
一、PyYaml
1、load() :返回一个对象
我们先创建一个yml<em>文件</em>，config.yml:name: Tom Smith
age: 37
spouse:
name: Jane Smi
Caused by: org.yaml.snakeyaml.scanner.ScannerException: while scanning for the next token
found character '@' that cannot start any token. (Do not use @ for indentation)
in 'reader', line 14, column ...
yml的表达能力非常强大，目前在配置<em>文件</em><em>中</em>得到了广泛的应用。这里说一说其引用功能，这在json<em>中</em>都不太好实现，引用的出现可以进一步简化。
基本思路：先定义一个对象（拥有属性）或数组，并给它起一个名字。然后在文档<em>中</em>可以用“*对象名”进行引用。
1、对象引用的例子
定义对象：
CENTER: &amp;CENTER
aaa: test is ok
（1）引用用方式1：引...
