验证7zjar包的版本可用性操作手册

相关文件：

1、测试程序上传

将目录 jar包测试\程序 下的text文件夹上传服务器/root目录下

2、jar包版本上传

打开目录 jar包测试\jar包 ，可以看到jar包的各种版本：

此处的jar包需要单独一个个进行测试上传，下面以文件sevenzipjbinding-16.02-2.01-AllLinux中的jar包上传测试为例。
打开文件sevenzipjbinding-16.02-2.01-AllLinux，将会看到两个jar包：

将此处两个jar包传输到服务器/root/test/lib目录下

3、测试程序运行

进入程序所在目录

cd /root/test/src/zip_7/

通过javac将.java编译为.class文件；

测试程序中包括两个java程序，其编译命令如下：

程序：SevenZipJBindingInitCheck.java

javac -classpath "/root/test/lib/*" SevenZipJBindingInitCheck.java

程序：PrintCountOfItems.java

javac -classpath "/root/test/lib/*" PrintCountOfItems.java

通过Java执行.class文件

程序：SevenZipJBindingInitCheck.java

java -cp $classpath:"/root/test/lib/*":./ SevenZipJBindingInitCheck

正确现象

7-Zip-JBinding library was initialized

错误现象：报错有很多种，可对其进行记录

OpenJDK 64-Bit Server VM warning: You have loaded library /tmp/SevenZipJBinding-6OrbBDKGBkCL/lib7-Zip-JBinding.so which might have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.
net.sf.sevenzipjbinding.SevenZipNativeInitializationException: 7-Zip-JBinding initialization failed: Error loading native library: '/tmp/SevenZipJBinding-6OrbBDKGBkCL/lib7-Zip-JBinding.so'
        at net.sf.sevenzipjbinding.SevenZip.loadNativeLibraries(SevenZip.java:650)
        at net.sf.sevenzipjbinding.SevenZip.initSevenZipFromPlatformJARIntern(SevenZip.java:456)
        at net.sf.sevenzipjbinding.SevenZip.initSevenZipFromPlatformJAR(SevenZip.java:340)
        at SevenZipJBindingInitCheck.main(SevenZipJBindingInitCheck.java:7)
Caused by: java.lang.UnsatisfiedLinkError: /tmp/SevenZipJBinding-6OrbBDKGBkCL/lib7-Zip-JBinding.so: /tmp/SevenZipJBinding-6OrbBDKGBkCL/lib7-Zip-JBinding.so: wrong ELF class: ELFCLASS32 (Possible cause: architecture word width mismatch)
        at java.lang.ClassLoader$NativeLibrary.load(Native Method)
        at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1946)
        at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1828)
        at java.lang.Runtime.load0(Runtime.java:810)
        at java.lang.System.load(System.java:1088)
        at net.sf.sevenzipjbinding.SevenZip.loadNativeLibraries(SevenZip.java:648)

程序：PrintCountOfItems.java

java -cp $classpath:"/root/test/lib/*":./ PrintCountOfItems my-test-archive.zip

正确现象

Count of items in archive: 7

错误现象：报错有很多种，可对其进行记录

OpenJDK 64-Bit Server VM warning: You have loaded library /tmp/SevenZipJBinding-6OrbBDKGBkCL/lib7-Zip-JBinding.so which might have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.
Error occurs: java.lang.RuntimeException: SevenZipJBinding couldn't be initialized automaticly using initialization from platform depended JAR and the default temporary directory. Please, make sure the correct 'sevenzipjbinding-<Platform>.jar' file is on the class path or consider initializing SevenZipJBinding manualy using one of the offered initialization methods: 'net.sf.sevenzipjbinding.SevenZip.init*()'

4、总结

将目录： jar包测试\jar包 下的所有文件都执行按照2、3的步骤执行一遍：
如果可以执行出现正确现象，请记录jar包的版本已经其文件名，如：sevenzipjbinding-16.02-2.01-AllLinux
如执行报错，请记录报错信息。

程序

public class PrintCountOfItems {
    public static void main(String[] args) {
        if (args.length == 0) {
            System.out.println("Usage: java PrintCountOfItems <archive-name>");
            return;
        }
        String archiveFilename = args[0];

        RandomAccessFile randomAccessFile = null;
        IInArchive inArchive = null;
        try {
            randomAccessFile = new RandomAccessFile(archiveFilename, "r");
            inArchive = SevenZip.openInArchive(null, // autodetect archive type
                    new RandomAccessFileInStream(randomAccessFile));

            System.out.println("Count of items in archive: " 
                    + inArchive.getNumberOfItems());

        } catch (Exception e) {
            System.err.println("Error occurs: " + e);
        } finally {
            if (inArchive != null) {
                try {
                    inArchive.close();
                } catch (SevenZipException e) {
                    System.err.println("Error closing archive: " + e);
                }
            }
            if (randomAccessFile != null) {
                try {
                    randomAccessFile.close();
                } catch (IOException e) {
                    System.err.println("Error closing file: " + e);
                }
            }
        }
    }
}

public class SevenZipJBindingInitCheck {
	public static void main(String[] args) {
        try {
            SevenZip.initSevenZipFromPlatformJAR();
            System.out.println("7-Zip-JBinding library was initialized");
        } catch (SevenZipNativeInitializationException e) {
            e.printStackTrace();
        }
    }
}