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Solution to Linux throwing file not found exception

王林
Release: 2019-11-14 11:05:25
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Solution to Linux throwing file not found exception

场景:

项目在windows下访问正常,linux下抛异常,找不到文件。

分析:

如果访问的项目文件是这样的:abc/bcd/aa.jpg ,而系统中访问文件的路径是:abc/Bcd/aa.jpg,两者的区别是二级目录bcd写成了Bcd。

如果在windows下开发的小伙伴们,是发现不了错误的,windows文件名大小写不敏感,因此,按照 abc/Bcd/aa.jpg依然能访问到文件,但是linux文件目录大小写敏感,因此会找不到文件。

解决方法:

在平时的编程中,一定要严格的书写。

还需要注意一点:linux目录分隔符是 /,windows下是\,因此有时在windows存到数据库里的文件路径搬到linux下就会不适用,需要在系统中做处理,从数据库取出路径后,要经过加工,代码如下:

    /**
     * 修正路径,将 \\ 或 / 等替换为 File.separator
     * @param path 待修正的路径
     * @return 修正后的路径
     */
    public static String path(String path){
        String p = StringUtils.replace(path, "\\", "/");
        p = StringUtils.join(StringUtils.split(p, "/"), "/");
        if (!StringUtils.startsWithAny(p, "/") && StringUtils.startsWithAny(path, "\\", "/")){
            p += "/";
        }
        if (!StringUtils.endsWithAny(p, "/") && StringUtils.endsWithAny(path, "\\", "/")){
            p = p + "/";
        }
        if (path != null && path.startsWith("/")){
            p = "/" + p; // linux下路径
        }
        return p;
    }
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