Question

我正在尝试创建一种方法，只需一步即可将多个zip存档合并到一起。代码看起来非常好，它应该工作。但是当我运行它时，我得到一个非常奇怪的例外：

java.lang.RuntimeException: Unexpected java.util.zip.ZipException ("invalid entry compressed size (expected 1506 but got 1507 bytes)")
(only duplicate entry execptions are expected!)
    at io.brainstone.github.installer.FileUtils.makeNewZipFromInputStreamList(FileUtils.java:309)
    at io.brainstone.github.installer.Main.startInstalling(Main.java:224)
    at io.brainstone.github.installer.Window$3$1.run(Window.java:183)
Caused by: java.util.zip.ZipException: invalid entry compressed size (expected 1506 but got 1507 bytes)
    at java.util.zip.ZipOutputStream.closeEntry(Unknown Source)
    at java.util.zip.ZipOutputStream.putNextEntry(Unknown Source)
    at io.brainstone.github.installer.FileUtils.makeNewZipFromInputStreamList(FileUtils.java:300)
    ... 2 more

我自己的代码抛出异常。这告诉我发生了意外的异常。预计只会出现duplicate entry个例外情况。（这是我用于我的条目覆盖的一个技巧。意味着列表中最后一个的归档具有最高优先级拥有一个文件）

为了清理，这是我的代码：

    public static void makeNewZipFromInputStreamList(File outputFile,
            ArrayList<InputStream> inputStreamList,
            ArrayList<String> includeList, ArrayList<String> excludeList)
            throws IOException, IllegalArgumentException {
        final int sizeOfLists[] = new int[] { inputStreamList.size(),
                includeList.size(), excludeList.size() };

        if ((sizeOfLists[0] != sizeOfLists[1])
                || (sizeOfLists[0] != sizeOfLists[2])
                || (sizeOfLists[1] != sizeOfLists[2]))
            throw new IllegalArgumentException(
                    "The ArrayLists do not have the same size ("
                            + sizeOfLists[0] + ", " + sizeOfLists[1] + ", "
                            + sizeOfLists[2] + ")");

        final ZipOutputStream zipOutputFile = new ZipOutputStream(
                new FileOutputStream(outputFile));

        final int size = sizeOfLists[0];
        final InputStream inputStreamTempArray[] = inputStreamList
                .toArray(new InputStream[size]);
        final String includeArray[] = includeList.toArray(new String[size]);
        final String excludeArray[] = excludeList.toArray(new String[size]);
        final ZipInputStream inputStreamArray[] = new ZipInputStream[size];

        HashMap<String, Object[]> tmp;

        int i, j;
        String fileName;
        ZipEntry entry;

        for (i = size - 1; i >= 0; i--) {
            inputStreamArray[i] = new ZipInputStream(inputStreamTempArray[i]);

            if (includeArray[i] == null) {
                includeArray[i] = "";
            }

            if (excludeArray[i] == null) {
                excludeArray[i] = "";
            }

            while ((entry = inputStreamArray[i].getNextEntry()) != null) {
                fileName = entry.getName();

                if (fileName.matches(includeArray[i])
                        || !fileName.matches(excludeArray[i])) {
                    try {
                        zipOutputFile.putNextEntry(entry); // Here is the inital exception thrown!

                        if (!entry.isDirectory()) {
                            copyStream(inputStreamArray[i], zipOutputFile,
                                    false, false);
                        }
                    } catch (ZipException ex) {
                        if (!ex.getMessage()
                                .matches("duplicate entry: .*\\..*")) {
                            throw new RuntimeException(
                                    "Unexpected "
                                            + ex.getClass().getName()
                                            + " (\""
                                            + ex.getMessage()
                                            + "\")\n(only duplicate entry execptions are expected!)",
                                    ex);
                        }
                    }
                }
            }

            inputStreamArray[i].close();
        }

        zipOutputFile.close();
    }

Answer 1

如果您使用的是Java SE 7，请考虑使用NIO.2文件API。

请注意，我已经编写了一些实用程序方法，使用NIO.2文件API（该库是开源）将目录复制到Zip文件和从Zip文件复制目录：

的Maven：

<dependency>  
    <groupId>org.softsmithy.lib</groupId>  
    <artifactId>softsmithy-lib-core</artifactId>  
    <version>0.3</version>  
</dependency>

教程：

http://softsmithy.sourceforge.net/lib/current/docs/tutorial/nio-file/index.html

Java - 意外的ZipException（意外的错误类型）

1 个答案: