问题解决系列：cannot be resolved to absolute file path because it does not reside in the file system_ jar

cannot be resolved to absolute file path because it does not reside in the file system: jar

String tempPath = System.getProperty("java.io.tmpdir")+"tomcat_"+System.currentTimeMillis();
String tempFile = tempPath+File.separator+fileName;
Resource resource = new DefaultResourceLoader().getResource("classpath:META-INF/resources"+filePath);
if (resource == null) {
    return "";
}

File file = new File(tempPath);
if (!file.exists()) {
    file.mkdir();
}
IOUtil.cp(resource.getInputStream(),new FileOutputStream(new File(tempFile)));