问题: MultipartException: Failed to parse multipart servlet request; nested exception is java.lang.Runtime 错误日志: org.springframework.web.multipart.MultipartException: Failed to parse multipart servlet request; nested excepti
问题:
MultipartException: Failed to parse multipart servlet request; nested exception is java.lang.Runtime
错误日志:
org.springframework.web.multipart.MultipartException: Failed to parse multipart servlet request; nested exception is java.lang.RuntimeException: java.nio.file.NoSuchFileException: /tmp/undertow.8081.6091954911906268442/undertow2435234810596519507upload
at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.handleParseFailure(StandardMultipartHttpServletRequest.java:124)
at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.parseRequest(StandardMultipartHttpServletRequest.java:115)
at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.<init>(StandardMultipartHttpServletRequest.java:88)
at org.springframework.web.multipart.support.StandardServletMultipartResolver.resolveMultipart(StandardServletMultipartResolver.java:87)
at org.springframework.web.servlet.DispatcherServlet.checkMultipart(DispatcherServlet.java:1178)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1012)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
问题缘由
在 Linux 系统中,Spring Boot 应用以 java -jar 命令启动时,会在操作系统的 /tmp 目录下生成一个 tomcat(或 undertow )临时目录,上传的文件先要转换成临时文件保存在这个文件夹下面。由于临时 /tmp 目录下的文件,在长时间(10天)没有使用的情况下,系统执行了 tmp 目录清理服务(systemd-tmpfiles-clean.service),导致 /tmp/undertow…8090 文件被清理,然而在上传的时候,undertow 服务器需要创建/tmp/undertow…8090/undertow…upload 临时文件,但是调用 Files.createFile(…) 的时候就会发现找不到父目录,才导致了以上的错误。
解决方案
1)重启
无法一劳永逸
2)配置文件指定目录
需要在服务器手动创建文件夹
mkdir -p /data/tmp
3)添加启动参数 -java.tmp.dir=/path/to/application/temp/
或者启动服务时自动创建临时目录
@Configuration
public class SpringCustomizedConfig {
private static final Logger log = LoggerFactory.getLogger(SpringCustomizedConfig.class);
public SpringCustomizedConfig() {
}
@Bean
public MultipartConfigElement multipartConfigElement() {
MultipartConfigFactory multipartConfigFactory = new MultipartConfigFactory();
String userDirPath = System.getProperty("user.dir");
log.info("*********[SpringCustomizedConfig][multipartConfigElement] user.dir is : {}.", userDirPath);
String uploadPath = userDirPath + "/multipartUpload/";
log.info("*********[SpringCustomizedConfig][multipartConfigElement] uploadPath is : {}.", uploadPath);
File file = new File(uploadPath);
try {
if (!file.exists()) {
file.mkdirs();
}
} catch (Exception var6) {
log.error("*********[SpringCustomizedConfig][multipartConfigElement] upload folder create failed, exception ", var6);
}
multipartConfigFactory.setLocation(uploadPath);
return multipartConfigFactory.createMultipartConfig();
}
}