1、如下图，安装Jenkins需要java1.8或java11，因此先安装java。这里建议安装java1.8,感觉java11支持不太好！！！
2、下载java
（1）所有版本下载地址
Java Archive | Oraclehttp://www.oracle.com/technetwork/java/javase/archive-139210.html（2）下载步骤
（3）一键安装
双击下载后的文件，根据提示，一键安装即可，如图，安装成功
java8之后，是没有自动生成jre文件夹的，因此需要进入到安装目录，手动安装
cd C:Program FilesJavajdk-11 binjlink.exe --module-path jmods --add-modules java.desktop --output jre
（4）环境变量配置
如果采用默认方式安装，路径应该为：C:Program FilesJavajdk-11
继续创建系统变量CLASSPATH
.;%JAVA_HOME%bin;%JAVA_HOME%libdt.jar;%JAVA_HOME%libtools.jar
在Path中新增变量
%JAVA_HOME%bin %JAVA_HOME%jrebin
打开新的cmd，查看版本：
二、安装Jenkins1、下载地址
https://jenkins.io/download/https://jenkins.io/download/2、根据提示，一键安装
3、访问
http://127.0.0.1:8080/
（1）根据提示完成配置
（2）如上图，显示插件安装失败，可以选择跳过该步骤并继续或尝试重试继续安装默认插件，这里选择第二种,依旧失败，在jenkins安装目录下了解到原因是下载问题：
（3）先记录一下推荐插件
（4）跳过安装,进入系统，进行操作
进入如下链接进行设置：http://127.0.0.1:8080/pluginManager/advanced
查看源地址：https://updates.jenkins.io/update-center.json
更改源地址：https://mirrors.tuna.tsinghua.edu.cn/jenkins/updates/update-center.json
（5）根据记录的推荐插件，逐个安装，很遗憾，全部失败
这个就有点恶心哈，感觉jenkins非常垃圾，不过不代表它不强大，总的来说还是挺有趣的，继续查找问题吧！
（6）点击上图的详细错误，查看具体报错：
貌似说的是java报错的原因，缺失安全证书？
sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at java.base/sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141) at java.base/sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126) at java.base/java.security.cert.CertPathBuilder.build(CertPathBuilder.java:297) at java.base/sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:380) Caused: sun.security.validator.ValidatorException: PKIX path building failed at java.base/sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:385) at java.base/sun.security.validator.PKIXValidator.enginevalidate(PKIXValidator.java:290) at java.base/sun.security.validator.Validator.validate(Validator.java:264) at java.base/sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:321) at java.base/sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:221) at java.base/sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:129) at java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.checkServerCerts(CertificateMessage.java:1313) Caused: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at java.base/sun.security.ssl.alert.createSSLException(alert.java:128) at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:321) at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:264) at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:259) at java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.checkServerCerts(CertificateMessage.java:1329) at java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.onConsumeCertificate(CertificateMessage.java:1204) at java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.consume(CertificateMessage.java:1151) at java.base/sun.security.ssl.SSLHandshake.consume(SSLHandshake.java:392) at java.base/sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:444) at java.base/sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:421) at java.base/sun.security.ssl.TransportContext.dispatch(TransportContext.java:178) at java.base/sun.security.ssl.SSLTransport.decode(SSLTransport.java:164) at java.base/sun.security.ssl.SSLSocketImpl.decode(SSLSocketImpl.java:1152) at java.base/sun.security.ssl.SSLSocketImpl.readHandshakeRecord(SSLSocketImpl.java:1063) at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:402) at java.base/sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:567) at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185) at java.base/sun.net.www.protocol.http.HttpURLConnection.followRedirect0(HttpURLConnection.java:2758) at java.base/sun.net.www.protocol.http.HttpURLConnection.followRedirect(HttpURLConnection.java:2680) at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1843) at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1509) at java.base/sun.net.www.protocol.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:3033) at java.base/java.net.URLConnection.getHeaderFieldLong(URLConnection.java:636) at java.base/java.net.URLConnection.getContentLengthLong(URLConnection.java:508) at java.base/java.net.URLConnection.getContentLength(URLConnection.java:492) at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getContentLength(HttpsURLConnectionImpl.java:389) at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1261) Caused: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490) at java.base/sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1963) at java.base/sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1958) at java.base/java.security.AccessController.doPrivileged(Native Method) at java.base/sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1957) at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1525) at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1509) at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:245) at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1277) Caused: java.io.IOException: Failed to load https://updates.jenkins.io/download/plugins/antisamy-markup-formatter/2.4/antisamy-markup-formatter.hpi to C:ProgramDataJenkins.jenkinspluginsantisamy-markup-formatter.jpi.tmp at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1284) Caused: java.io.IOException: Failed to download from https://updates.jenkins.io/download/plugins/antisamy-markup-formatter/2.4/antisamy-markup-formatter.hpi (redirected to: https://get.jenkins.io/plugins/antisamy-markup-formatter/2.4/antisamy-markup-formatter.hpi) at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1318) at hudson.model.UpdateCenter$DownloadJob._run(UpdateCenter.java:1872) at hudson.model.UpdateCenter$InstallationJob._run(UpdateCenter.java:2167) at hudson.model.UpdateCenter$DownloadJob.run(UpdateCenter.java:1846) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at hudson.remoting.AtmostOneThreadExecutor$Worker.run(AtmostOneThreadExecutor.java:121) at java.base/java.lang.Thread.run(Thread.java:834)
(7) 卸载java11,安装java8,再重新安装jenkins，结果如下：
如图，满屏的成功！！！
