java.io.IOException:不是带有class.getResourceAsStream()的GZIP格式

Question

我正在尝试从我的.jar中的资源加载一些GZIP-ed数据,但是我收到了一条java.io.IOException: Not in GZIP格式消息.

当我从文件加载相同的数据时,我没有收到任何错误.为什么？(这是我用NetBeans编译的maven项目)

以下是生成问题的测试代码:

public static void main(String[] args) throws IOException {

    byte[] dummy = new byte[10];

    // Reading data from file
    File f = new File("C:\\Temp\\422\\convert1900.data");
    DataInputStream is = new DataInputStream(
            new GZIPInputStream(new FileInputStream(f)));

    while ( is.read(dummy) != -1 );

    // Reading data from resource
    InputStream ins = CompareTest2.class.getResourceAsStream(
            "/net/cv/convert1900.data");

    is = new DataInputStream(
        new GZIPInputStream(ins)); // Issue happens here

    while ( is.read(dummy) != -1 );

}

编辑

两个"文件"都具有相同的内容.

编辑2

我只是尝试使用以下代码计算两种方法获得的字节数:

public static void main(String[] args) throws IOException {

    int total = 0;
    int retr = 0;

    byte[] dummy = new byte[10];

    // Reading data from file
    File f = new File("C:\\Temp\\422\\convert1900.data");
    InputStream is = new FileInputStream(f);

    do {
        retr = is.read(dummy);
        if ( retr != -1 )
            total += retr;
    } while ( retr != -1 );

    System.out.println("Total file: " + total);

    // Reading data from resource
    InputStream ins = CompareTest2.class.getResourceAsStream(
            "/net/cv/convert1900.data");

    total = 0;
    retr = 0;

    do {
        retr = ins.read(dummy);
        if ( retr != -1 )
            total += retr;
    } while ( retr != -1 );

    System.out.println("Total resource: " + total);

}

我得到:

Total file: 9132744
Total resource: 16399085

很奇怪 !!

编辑3

我刚刚注意到.jar中资源的大小是16399085(未压缩)而不是9132744.似乎问题出在编译过程中.

可能是我的pom.xml中存在以下问题:

        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-resources-plugin</artifactId>
            <version>2.5</version>
            <configuration>
                <encoding>${project.build.sourceEncoding}</encoding> // UTF8
            </configuration>
        </plugin>

Answer 1

我的问题在于过滤我的资源.这里有一个解决方案.