Question

当文件名包含“＃”时，我发现错误。

错误：java.lang.IllegalStateException：文件不存在。

但是当没有“＃”的文件名仍在工作时。

String resource = "file:c:/Test#.txt";
PathMatchingResourcePatternResolver pathResolver = new PathMatchingResourcePatternResolver();
    Resource[] resolveResources;
    try {
        resolveResources = pathResolver.getResources(resources);
        if(resolveResources.length == 0) {
            throw new IllegalStateException("File does not exist: " + resources);
        }else{
            for (Resource resource : resolveResources) {
                if(!resource.exists()){ //true
                    throw new IllegalStateException("File does not exist: " + resource);
                }
            }
        }
    } catch (IOException e) {
        throw new IllegalStateException("File does not exist: " + resources);
    }

Answer 1

文件名有效性取决于操作系统（文件系统更准确），因此要确保可以在任何操作系统上读取该文件;使用字母数字和下划线Characters to avoid

在您的程序中，问题出在URI制作函数

"subscriptions.entity_type"

Answer 2

这有点像黑客，但我认为你需要这样的东西：

@Test
public void test1() {

try {
    String resource = "file:c:\\tmp\\Test\u0023.txt";

    PathMatchingResourcePatternResolver pathResolver = new TestPathMatchingResourcePatternResolver();
    Resource[] resolveResources;
    resolveResources = pathResolver.getResources(resource);
    if (resolveResources.length == 0) {
        throw new IllegalStateException("File does not exist: " + resource);
    } else {
        for (Resource resource2 : resolveResources) {
            if (!resource2.exists()) { // true
                throw new IllegalStateException("File does not exist: " + resource2);
            }
        }
    }
} catch (Exception e) {
    e.printStackTrace();
    fail();
}

}

然后你需要添加修改PathMatchingResourcePatternResolver

public class TestPathMatchingResourcePatternResolver extends PathMatchingResourcePatternResolver {

    public TestPathMatchingResourcePatternResolver() {
        super(new TestDefaultResourceLoader());
    }
}

然后你需要修改DefaultResourceLoader

public class TestDefaultResourceLoader extends DefaultResourceLoader {
    @Override
    public Resource getResource(String location) {
        Assert.notNull(location, "Location must not be null");
        if (location.startsWith("/")) {
            return getResourceByPath(location);
        } else if (location.startsWith(CLASSPATH_URL_PREFIX)) {
            return new ClassPathResource(location.substring(CLASSPATH_URL_PREFIX.length()), getClassLoader());
        } else {
            try {
                // Try to parse the location as a URL...
                URL url = new URL(location);
                return new TestUrlResource(url);
            } catch (MalformedURLException ex) {
                // No URL -> resolve as resource path.
                return getResourceByPath(location);
            }
        }
    }
}

然后你需要修改UrlResource

public class TestUrlResource extends UrlResource {

    public TestUrlResource(URL url) {
        super(url);
    }

    @Override
    public boolean exists() {
        return true;
    }

    @Override
    public File getFile() throws IOException {
        return new File(getURL().toString().replace("file:", ""));
    }
}

使用Spring时文件名包含“＃”时找不到文件资源

2 个答案: