使用 Java Files.copy 复制后出现空白页的 PDF 文件

2022-01-20 00:00:00 复制 file pdf java

我正在尝试将我的类路径中的文件复制到另一个临时位置.

I am trying to copy a file in my Class path to another temp location.

这是它的代码:

    InputStream inputStream = this.getClass().getClassLoader()
            .getResourceAsStream(readmeFile);

    Path path = Paths.get(tempFilesOutputPath + File.separator + readmeFile);
    try {
        Files.copy(inputStream, path, StandardCopyOption.REPLACE_EXISTING);
        inputStream.close();

    } catch (IOException e) {
        throw e;
    }

readMeFile 有 2 页，tempFilesOutputPath 文件夹中的复制文件也有 2 页，但没有任何内容.

readMeFile has 2 pages, the copied file in the tempFilesOutputPath folder also has two pages but without any content.

如果我犯了一些错误或者必须以不同的方式完成，请告诉我.

Please let me know if I am making some mistake or it has to be done in a different way.

干杯，马杜

推荐答案

问题完全不相关.我正在使用maven复制资源来复制我的src/main/resources/下的资源

Issue was totally unrelated. I was using maven copy resource to copy the resources under my src/main/resources/

这是我的 Maven 资源:

this was my maven resource: 

        <resource>
            <directory>src/main/resources</directory>
            <filtering>true</filtering>
            <includes>
                <include>**/*.properties</include>
                <include>**/*.xml</include>
                <include>**/*.txt</include>
                <include>**/*.html</include>
                <include>**/*.pdf</include>
            </includes>
        </resource>

由于过滤是针对 PDF 文件，因此被作为空文档复制到目标文件夹.

Since the filtering was on PDF file was copied as an empty doco to the target folder.

我只是将它分成两个资源，过滤掉 PDF 文件.

I just seperated it into two resources with filtering off for PDF file.

        <resource>
            <directory>src/main/resources</directory>
            <filtering>true</filtering>
            <includes>
                <include>**/*.properties</include>
                <include>**/*.xml</include>
                <include>**/*.txt</include>
                <include>**/*.html</include>
            </includes>
        </resource>
        <resource>
            <directory>src/main/resources</directory>
            <filtering>false</filtering>
            <includes>
                <include>**/*.pdf</include>
            </includes>
        </resource>

感谢 Drew Buckley，我在尝试对文件进行二进制比较时遇到了问题.项目上的实际文件不同，从 maven 复制的目标文件夹中的文件也不同.

Thanks to Drew Buckley, I got the issue when trying to do a binary comparison of the file. Actual file on the project was different and the one on the target folder which gets copied from the maven was different.

现在可以正常使用了.

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