springboot 启动类 debug as java application运行提示 Unable to create tempDir

[ncc595720438]

jdk1.8版本，本地环境变量，eclipse中的环境变量都已经设置成jkd8版本，run as java application运行项目可以正常启动。
启动类如下：
@EnableEurekaServer
@SpringBootApplication
public class ClouddoServerApplication {

public static void main(String[] args) {
SpringApplication.run(ClouddoServerApplication.class, args);
}
}
pom.xml配置
启动报错日志如下：
2019-06-12 17:37:39.102 INFO 2664 --- [ main] utoConfigurationReportLoggingInitializer :

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2019-06-12 17:37:39.118 ERROR 2664 --- [ main] o.s.boot.SpringApplication : Application startup failed

org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to create tempDir. java.io.tmpdir is set to C:\Windows\
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:137) ~[spring-boot-1.5.9.RELEASE.jar:1.5.9.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:537) ~[spring-context-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.9.RELEASE.jar:1.5.9.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693) [spring-boot-1.5.9.RELEASE.jar:1.5.9.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360) [spring-boot-1.5.9.RELEASE.jar:1.5.9.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [spring-boot-1.5.9.RELEASE.jar:1.5.9.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118) [spring-boot-1.5.9.RELEASE.jar:1.5.9.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107) [spring-boot-1.5.9.RELEASE.jar:1.5.9.RELEASE]
at com.bootdo.clouddoserver.ClouddoServerApplication.main(ClouddoServerApplication.java:12) [classes/:na]
Caused by: org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to create tempDir. java.io.tmpdir is set to C:\Windows\
at org.springframework.boot.context.embedded.AbstractEmbeddedServletContainerFactory.createTempDir(AbstractEmbeddedServletContainerFactory.java:260) ~[spring-boot-1.5.9.RELEASE.jar:1.5.9.RELEASE]
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:167) ~[spring-boot-1.5.9.RELEASE.jar:1.5.9.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:164) ~[spring-boot-1.5.9.RELEASE.jar:1.5.9.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:134) ~[spring-boot-1.5.9.RELEASE.jar:1.5.9.RELEASE]
... 8 common frames omitted
Caused by: java.io.IOException: 拒绝访问。
at java.io.WinNTFileSystem.createFileExclusively(Native Method) ~[na:1.8.0_211]
at java.io.File.createTempFile(File.java:2024) ~[na:1.8.0_211]
at java.io.File.createTempFile(File.java:2070) ~[na:1.8.0_211]
at org.springframework.boot.context.embedded.AbstractEmbeddedServletContainerFactory.createTempDir(AbstractEmbeddedServletContainerFactory.java:251) ~[spring-boot-1.5.9.RELEASE.jar:1.5.9.RELEASE]
... 11 common frames omitted

求解答

[ncc595720438]

上面的问题没找到具体的原因，换了种思路，修改了eclipse中java.io.tmpdir的目录：
window->Preferences->Java->Installed JREs，选中eclipse中使用的jdk，点解edit，在Default VM arguments中增加如下参数：-Djava.io.tmpdir="e:\Java\springcloud\temp"，指定临时文件的路径(不在访问C盘，自己新建一个)。然后再启动类中，debug 运行，项目正常启动，也可以进行断点调试