Question

在ubuntu服务器上运行我的springboot Web服务Java jar应用程序会导致以下错误，我已经对该错误进行了一些研究，但是我没有解决方案。我用于运行jar文件的命令是

java -jar mySpringBootApp.jar


org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to create tempDir. java.io.tmpdir is set to /tmp
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:157) ~[spring-boot-2.1.1.RELEASE.jar!/:2.1.1.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:540) ~[spring-context-5.1.3.RELEASE.jar!/:5.1.3.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) ~[spring-boot-2.1.1.RELEASE.jar!/:2.1.1.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) [spring-boot-2.1.1.RELEASE.jar!/:2.1.1.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.1.1.RELEASE.jar!/:2.1.1.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-2.1.1.RELEASE.jar!/:2.1.1.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) [spring-boot-2.1.1.RELEASE.jar!/:2.1.1.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) [spring-boot-2.1.1.RELEASE.jar!/:2.1.1.RELEASE]
    at aacctt.payments.org.Application.main(Application.java:18) [classes!/:0.0.1-SNAPSHOT]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_191]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_191]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_191]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_191]
    at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) [ mySpringBootApp-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
    at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) [ mySpringBootApp-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
    at org.springframework.boot.loader.Launcher.launch(Launcher.java:50) [ mySpringBootApp-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
    at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51) [ mySpringBootApp-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
Caused by: org.springframework.boot.web.server.WebServerException: Unable to create tempDir. java.io.tmpdir is set to /tmp
    at org.springframework.boot.web.server.AbstractConfigurableWebServerFactory.createTempDir(AbstractConfigurableWebServerFactory.java:182) ~[spring-boot-2.1.1.RELEASE.jar!/:2.1.1.RELEASE]
    at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:162) ~[spring-boot-2.1.1.RELEASE.jar!/:2.1.1.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:181) ~[spring-boot-2.1.1.RELEASE.jar!/:2.1.1.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:154) ~[spring-boot-2.1.1.RELEASE.jar!/:2.1.1.RELEASE]
    ... 16 common frames omitted
Caused by: java.io.IOException: Read-only file system
    at java.io.UnixFileSystem.createFileExclusively(Native Method) ~[na:1.8.0_191]
    at java.io.File.createTempFile(File.java:2024) ~[na:1.8.0_191]
    at java.io.File.createTempFile(File.java:2070) ~[na:1.8.0_191]
    at org.springframework.boot.web.server.AbstractConfigurableWebServerFactory.createTempDir(AbstractConfigurableWebServerFactory.java:173) ~[spring-boot-2.1.1.RELEASE.jar!/:2.1.1.RELEASE]
    ... 19 common frames omitted

Answer 1

对于那些在从 Intellij IDEA 运行时在提供 env 变量作为运行/调试配置的一部分时遇到相同异常的人：请查看是否勾选了“包括父环境变量”

Answer 2

您的应用程序用户可能没有足够的权限来创建/tmp目录中的任何内容……请参阅最后一条消息Caused by: java.io.IOException: Read-only file system

Answer 3

尝试以下任何一种方法：

1）更改/ tmp的权限以授予用户访问权限。 chmod -R 777 / tmp 确保您使用sudo访问权限（根）运行上述命令

2）将要添加的用户添加到sudo组。

无法创建tempDir。 java.io.tmpdir设置为/ tmp

3 个答案: