折腾：
【未解决】Mac本地测试远程服务器中taos报错：java.lang.UnsatisfiedLinkError no taos in java.library.path
期间，先去弄，把Mac的本地的SpringBoot的Java后端服务，上传，部署到远程服务器CentOS7中。
此处对于Java部署一无所知。所以需要慢慢弄。
java spring boot deploy to centos 7
然后之前知道的：
mvn clean package java -jar target/xxx-0.0.1-SNAPSHOT.jar
试试解压jar后有哪些
不过要先去
mvn clean package
打包。
但是发现必须改回mysql的配置：
spring.datasource.url=jdbc:mysql://${MYSQL_HOST:localhost}:3306/xxx?useUnicode=yes&characterEncoding=UTF-8
spring.datasource.username=xxx
spring.datasource.password=xxx才能继续重新打包。
且还要先启动mysql
/usr/local/mysql/support-files/mysql.server start
才可以。
生成jar了。去解压试试
jar -xf xxx-1.0.0-SNAPSHOT.jar
输出空的。
好像多出一个文件夹。
但是没注意是哪个。
看到：
java org.springframework.boot.loader.JarLauncher
回去一看，好像是org文件夹，果然找到了这个：
试试：
java org.springframework.boot.loader.JarLauncher
结果还报错了：
【未解决】Java的SpringBoot的jar解压后用JarLauncher启动报错：src/main/resources/log4j2.xml No such file or directory
去加上：
<configuration> <executable>true</executable> </configuration>
变成：
<build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <executable>true</executable> </configuration> </plugin> </plugins> </build>
去打包
mart_electric_server master ● mvn clean package >> mvn_package_3.log crifan@licrifandeMacBook-Pro ~/dev/dev_root/projects/xxx/src/server/xxx/s mart_electric_server master ● ll target/xxx-1.0.0-SNAPSHOT.jar -rwxr--r-- 1 crifan staff 39M 3 27 21:36 target/xxx-1.0.0-SNAPSHOT.jar
打包后是39MB，真的不小。
先去mac本地运行试试
target/xxx-1.0.0-SNAPSHOT.jar
结果：
target/xxx-1.0.0-SNAPSHOT.jar Logging system failed to initialize using configuration from 'src/main/resources/log4j2.xml' java.io.FileNotFoundException: /Users/crifan/dev/dev_root/projects/xxx/src/server/xxx/xxx/target/src/main/resources/log4j2.xml (No such file or directory) at java.io.FileInputStream.open0(Native Method) at java.io.FileInputStream.open(FileInputStream.java:195) at java.io.FileInputStream.<init>(FileInputStream.java:138) at java.io.FileInputStream.<init>(FileInputStream.java:93) at sun.net.www.protocol.file.FileURLConnection.connect(FileURLConnection.java:90) at sun.net.www.protocol.file.FileURLConnection.getInputStream(FileURLConnection.java:188) at java.net.URL.openStream(URL.java:1045) at org.springframework.boot.context.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java:317) at org.springframework.boot.context.logging.LoggingApplicationListener.initialize(LoggingApplicationListener.java:288) at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEnvironmentPreparedEvent(LoggingApplicationListener.java:246) at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:223) at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127) at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:76) at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:53) at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:345) at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) at com.crifan.xxx.AccessingDataMysqlApplication.main(AccessingDataMysqlApplication.java:12) 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:498) at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) at org.springframework.boot.loader.Launcher.launch(Launcher.java:51) at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:52) 2020-03-27 21:37:38,278 ERROR SpringApplication.java:826 - Application run failed java.lang.IllegalStateException: java.io.FileNotFoundException: /Users/crifan/dev/dev_root/projects/xxx/src/server/xxx/xxx/target/src/main/resources/log4j2.xml (No such file or directory) at org.springframework.boot.context.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java:324) ~[spring-boot-2.2.2.RELEASE.jar!/:2.2.2.RELEASE] at org.springframework.boot.context.logging.LoggingApplicationListener.initialize(LoggingApplicationListener.java:288) ~[spring-boot-2.2.2.RELEASE.jar!/:2.2.2.RELEASE] at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEnvironmentPreparedEvent(LoggingApplicationListener.java:246) ~[spring-boot-2.2.2.RELEASE.jar!/:2.2.2.RELEASE] at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:223) ~[spring-boot-2.2.2.RELEASE.jar!/:2.2.2.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.2.2.RELEASE.jar!/:5.2.2.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.2.2.RELEASE.jar!/:5.2.2.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.2.2.RELEASE.jar!/:5.2.2.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127) ~[spring-context-5.2.2.RELEASE.jar!/:5.2.2.RELEASE] at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:76) ~[spring-boot-2.2.2.RELEASE.jar!/:2.2.2.RELEASE] at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:53) ~[spring-boot-2.2.2.RELEASE.jar!/:2.2.2.RELEASE] at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:345) [spring-boot-2.2.2.RELEASE.jar!/:2.2.2.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) [spring-boot-2.2.2.RELEASE.jar!/:2.2.2.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.2.2.RELEASE.jar!/:2.2.2.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.2.2.RELEASE.jar!/:2.2.2.RELEASE] at com.crifan.xxx.AccessingDataMysqlApplication.main(AccessingDataMysqlApplication.java:12) [classes!/:1.0.0-SNAPSHOT] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_112] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_112] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_112] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_112] at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) [xxx-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT] at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) [xxx-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT] at org.springframework.boot.loader.Launcher.launch(Launcher.java:51) [xxx-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT] at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:52) [xxx-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT] Caused by: java.io.FileNotFoundException: /Users/crifan/dev/dev_root/projects/xxx/src/server/xxx/xxx/target/src/main/resources/log4j2.xml (No such file or directory) at java.io.FileInputStream.open0(Native Method) ~[?:1.8.0_112] at java.io.FileInputStream.open(FileInputStream.java:195) ~[?:1.8.0_112] at java.io.FileInputStream.<init>(FileInputStream.java:138) ~[?:1.8.0_112] at java.io.FileInputStream.<init>(FileInputStream.java:93) ~[?:1.8.0_112] at sun.net.www.protocol.file.FileURLConnection.connect(FileURLConnection.java:90) ~[?:1.8.0_112] at sun.net.www.protocol.file.FileURLConnection.getInputStream(FileURLConnection.java:188) ~[?:1.8.0_112] at java.net.URL.openStream(URL.java:1045) ~[?:1.8.0_112] at org.springframework.boot.context.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java:317) ~[spring-boot-2.2.2.RELEASE.jar!/:2.2.2.RELEASE] ... 22 more