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问题解决系列：cannot be resolved to absolute file path because it does not resid...
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问题解决系列：cannot be resolved to absolute file path because it does not reside in the file system_ jar
精选 原创springboot打包之后，读取资源文件内容，报错，报错提示如下：
cannot be resolved to absolute file path because it does not reside in the file system: jar
springboot | 2.1.1.RELEASE |
打包之后，spring没办法通过File的形式访问jar包里面的文件。
有两种方案：
1. 使用resource.getInputStream()读取文件内容
2. 缓存到临时文件，使用临时文件路径进行读取
样例代码如下：
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)));
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)));
顺利解决问题！！！
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