{"id":258275,"date":"2024-05-15T12:34:05","date_gmt":"2024-05-15T04:34:05","guid":{"rendered":""},"modified":"2024-05-15T12:34:11","modified_gmt":"2024-05-15T04:34:11","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-java-%e4%bb%a3%e7%a0%81%e8%a7%a3%e5%8e%8b-bz2-%e5%8e%8b%e7%bc%a9%e6%96%87%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/258275.html","title":{"rendered":"\u5982\u4f55\u4f7f\u7528 java \u4ee3\u7801\u89e3\u538b bz2 \u538b\u7f29\u6587\u4ef6"},"content":{"rendered":"

\"\u5982\u4f55\u4f7f\u7528<\/p>\n

\u4f7f\u7528Java\u4ee3\u7801\u89e3\u538bbz2\u538b\u7f29\u6587\u4ef6\u7684\u65b9\u5f0f\u4e3b\u8981\u4f9d\u8d56\u4e8e\u7b2c\u4e09\u65b9\u5e93\u5982Apache Commons Compress\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u521b\u5efa\u4e00\u4e2aBZip2CompressorInputStream<\/code>\u5b9e\u4f8b\uff0c\u7136\u540e\u5c06\u538b\u7f29\u6587\u4ef6\u7684\u5185\u5bb9\u8bfb\u53d6\u51fa\u6765\u5e76\u5199\u5165\u5230\u8f93\u51fa\u6d41\u4e2d<\/strong>\u3002\u4e0b\u9762\u662f\u5982\u4f55\u4f7f\u7528Java\u4ee3\u7801\u8fdb\u884c\u89e3\u538b\u7684\u4e00\u4e2a\u8be6\u7ec6\u8fc7\u7a0b\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u5bfc\u5165\u5fc5\u8981\u7684\u5e93<\/p>\n<\/p>\n

\u5728\u5f00\u59cb\u7f16\u5199\u4ee3\u7801\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u786e\u4fdd\u60a8\u7684\u9879\u76ee\u4e2d\u5305\u542b\u4e86Apache Commons Compress\u5e93\u3002\u82e5\u4f7f\u7528Maven\u7ba1\u7406\u9879\u76ee\uff0c\u9700\u8981\u5728pom.xml<\/code>\u4e2d\u6dfb\u52a0\u4f9d\u8d56\u3002<\/p>\n<\/p>\n

<dependency><\/p>\n
    <groupId>org.apache.commons<\/groupId><\/p>\n
    <artifactId>commons-compress<\/artifactId><\/p>\n
    <version>1.20<\/version> <!--\u8bf7\u68c0\u67e5\u662f\u5426\u662f\u6700\u65b0\u7248\u672c--><\/p>\n
<\/dependency><\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e8c\u3001\u521b\u5efa\u89e3\u538b\u6d41<\/p>\n<\/p>\n
\u8981\u4f7f\u7528Apache Commons Compress\u5e93\u89e3\u538bbz2\u6587\u4ef6\uff0c\u5fc5\u987b\u9996\u5148\u521b\u5efa\u4e00\u4e2aBZip2CompressorInputStream<\/code>\u5bf9\u8c61\u3002\u8fd9\u4e2a\u5bf9\u8c61\u8d1f\u8d23\u8bfb\u53d6\u538b\u7f29\u6570\u636e\u5e76\u89e3\u538b\u5b83\u3002<\/p>\n<\/p>\n
import org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream;<\/p>\n
public class BZ2Decompressor {<\/p>\n
    public void decompressBZ2File(String inFilename, String outFilename) throws IOException {<\/p>\n
        FileInputStream fin = null;<\/p>\n
        FileOutputStream fout = null;<\/p>\n
        BZip2CompressorInputStream bzIn = null;<\/p>\n
        try {<\/p>\n
            fin = new FileInputStream(inFilename);<\/p>\n
            fout = new FileOutputStream(outFilename);<\/p>\n
            bzIn = new BZip2CompressorInputStream(fin);<\/p>\n
            final byte[] buffer = new byte[1024];<\/p>\n
            int n = 0;<\/p>\n
            while (-1 != (n = bzIn.read(buffer))) {<\/p>\n
                fout.write(buffer, 0, n);<\/p>\n
            }<\/p>\n
        } finally {<\/p>\n
            if (bzIn != null) bzIn.close();<\/p>\n
            if (fout != null) fout.close();<\/p>\n
            if (fin != null) fin.close();<\/p>\n
        }<\/p>\n
    }<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u8bfb\u53d6\u548c\u5199\u5165\u6570\u636e<\/p>\n<\/p>\n
\u521b\u5efa\u4e86BZip2CompressorInputStream<\/code>\u4e4b\u540e\uff0c\u63a5\u4e0b\u6765\u5c31\u662f\u8bfb\u53d6\u6570\u636e\u5e76\u5c06\u5176\u5199\u5165\u5230\u8f93\u51fa\u6587\u4ef6\u4e2d\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u7c7b\u4f3c\u4e8e\u4f7f\u7528\u666e\u901a\u7684Java\u8f93\u5165\u8f93\u51fa\u6d41<\/strong>\u3002<\/p>\n<\/p>\n
final byte[] buffer = new byte[1024];<\/p>\n
int n = 0;<\/p>\n
while (-1 != (n = bzIn.read(buffer))) {<\/p>\n
    fout.write(buffer, 0, n);<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u5904\u7406\u5f02\u5e38\u60c5\u51b5<\/p>\n<\/p>\n
\u5728\u5904\u7406\u6587\u4ef6\u548c\u6d41\u65f6\uff0c\u603b\u6709\u53ef\u80fd\u4f1a\u53d1\u751fI\/O\u5f02\u5e38\u3002\u5fc5\u987b\u6b63\u786e\u5730\u5904\u7406\u8fd9\u4e9b\u5f02\u5e38\uff0c\u786e\u4fdd\u5373\u4f7f\u5728\u9047\u5230\u9519\u8bef\u65f6\uff0c\u8d44\u6e90\u4e5f\u80fd\u88ab\u9002\u5f53\u5730\u5173\u95ed\u548c\u56de\u6536\u3002<\/p>\n<\/p>\n
try {<\/p>\n
    \/\/ ... \u4ee3\u7801 ...<\/p>\n
} catch(IOException ex) {<\/p>\n
    \/\/ \u5904\u7406\u5f02\u5e38<\/p>\n
} finally {<\/p>\n
    if (bzIn != null) bzIn.close();<\/p>\n
    if (fout != null) fout.close();<\/p>\n
    if (fin != null) fin.close();<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e94\u3001\u6574\u5408\u89e3\u538b\u65b9\u6cd5<\/p>\n<\/p>\n
\u5c06\u4ee5\u4e0a\u6b65\u9aa4\u6574\u5408\u6210\u4e00\u4e2a\u65b9\u6cd5\uff0c\u60a8\u53ef\u4ee5\u5f88\u5bb9\u6613\u5730\u590d\u7528\u4ee3\u7801\uff0c\u5bf9\u4efb\u4f55bz2\u538b\u7f29\u6587\u4ef6\u8fdb\u884c\u89e3\u538b\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
public void decompressBZ2File(String inFilename, String outFilename) {<\/p>\n
    \/\/ ... \u4ee3\u7801 ...<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u516d\u3001\u6d4b\u8bd5\u89e3\u538b\u529f\u80fd<\/p>\n<\/p>\n
\u6700\u540e\uff0c\u6211\u4eec\u9700\u8981\u7f16\u5199\u4e00\u4e2a\u4e3b\u65b9\u6cd5\u6216\u5355\u5143\u6d4b\u8bd5\u6765\u9a8c\u8bc1\u6211\u4eec\u7684\u89e3\u538b\u529f\u80fd\u662f\u5426\u6b63\u5e38\u5de5\u4f5c\u3002<\/p>\n<\/p>\n
public static void mAI<\/a>n(String[] args) {<\/p>\n
    BZ2Decompressor decompressor = new BZ2Decompressor();<\/p>\n
    try {<\/p>\n
        decompressor.decompressBZ2File("file.bz2", "file.txt");<\/p>\n
        System.out.println("\u89e3\u538b\u5b8c\u6210\uff01");<\/p>\n
    } catch (IOException e) {<\/p>\n
        e.printStackTrace();<\/p>\n
    }<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u786e\u4fdd\u63d0\u4f9b\u6b63\u786e\u7684\u8f93\u5165\u6587\u4ef6\u540d\u79f0\u548c\u8f93\u51fa\u6587\u4ef6\u540d\u79f0\uff0c\u5e76\u786e\u4fdd\u8fd9\u4e9b\u6587\u4ef6\u5728\u60a8\u7684\u6587\u4ef6\u7cfb\u7edf\u4e2d\u662f\u5b58\u5728\u7684\u6216\u53ef\u88ab\u521b\u5efa\u7684\u3002<\/strong><\/p>\n<\/p>\n
\u4e03\u3001\u8003\u8651\u5b89\u5168\u6027\u548c\u6027\u80fd<\/p>\n<\/p>\n
\u5728\u5904\u7406\u6587\u4ef6\u89e3\u538b\u65f6\uff0c\u5e94\u5f53\u8003\u8651\u7a0b\u5e8f\u7684\u5065\u58ee\u6027\u3001\u5b89\u5168\u6027\u4ee5\u53ca\u6027\u80fd\u4f18\u5316\u3002\u6bd4\u5982\u8003\u8651\u5927\u6587\u4ef6\u89e3\u538b\u65f6\u53ef\u80fd\u5b58\u5728\u7684\u5185\u5b58\u5360\u7528\u95ee\u9898\uff0c\u4ee5\u53ca\u5f02\u5e38\u5904\u7406\u673a\u5236\u3002<\/p>\n<\/p>\n
\u516b\u3001\u8fdb\u4e00\u6b65\u4f18\u5316<\/p>\n<\/p>\n
\u5982\u679c\u9700\u8981\u9891\u7e41\u8fdb\u884c\u6587\u4ef6\u89e3\u538b\u7684\u64cd\u4f5c\uff0c\u53ef\u80fd\u4f1a\u8003\u8651\u8fdb\u4e00\u6b65\u4f18\u5316\u7a0b\u5e8f\uff0c\u6bd4\u5982\u4f7f\u7528\u7ebf\u7a0b\u6c60\u6765\u63d0\u5347\u5e76\u53d1\u5904\u7406\u80fd\u529b\uff0c\u6216\u8005\u4f7f\u7528NIO\u6765\u63d0\u9ad8\u6587\u4ef6\u8bfb\u5199\u6548\u7387\uff0c\u4ece\u800c\u4f18\u5316\u6574\u4e2a\u7a0b\u5e8f\u7684\u6027\u80fd\u3002<\/p>\n<\/p>\n
\u901a\u8fc7\u9075\u5faa\u4ee5\u4e0a\u6b65\u9aa4\uff0c\u60a8\u5c31\u53ef\u4ee5\u4f7f\u7528Java\u4ee3\u7801\u6709\u6548\u5730\u89e3\u538bbz2\u538b\u7f29\u6587\u4ef6\u4e86\u3002\u8bb0\u5f97\u5728\u4f7f\u7528\u8be5\u65b9\u6cd5\u4e4b\u524d\u786e\u4fdd\u60a8\u6709\u6743\u9650\u8bfb\u53d6\u8f93\u5165\u6587\u4ef6\u5e76\u4e14\u53ef\u4ee5\u5728\u6307\u5b9a\u4f4d\u7f6e\u5199\u5165\u8f93\u51fa\u6587\u4ef6\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
1. \u6709\u54ea\u4e9b\u5e38\u7528\u7684 Java \u4ee3\u7801\u5e93\u53ef\u4ee5\u7528\u4e8e\u89e3\u538b\u7f29 .bz2 \u6587\u4ef6\uff1f<\/strong>
\n\u5e38\u7528\u7684 Java \u4ee3\u7801\u5e93\u6709 Apache Commons Compress\uff0cApache Ant\uff0c\u4ee5\u53ca Java SE \u5185\u7f6e\u7684 java.util.zip \u5305\u7b49\u3002\u8fd9\u4e9b\u4ee3\u7801\u5e93\u63d0\u4f9b\u4e86\u4e0d\u540c\u7684 API \u548c\u65b9\u6cd5\u6765\u89e3\u538b\u7f29\u5404\u79cd\u7c7b\u578b\u7684\u6587\u4ef6\u3002<\/p>\n
2. \u5982\u4f55\u901a\u8fc7 Apache Commons Compress \u89e3\u538b\u7f29 .bz2 \u6587\u4ef6\uff1f<\/strong>
\n\u9996\u5148\uff0c\u4f60\u9700\u8981\u5728\u9879\u76ee\u4e2d\u5bfc\u5165 Apache Commons Compress \u7684\u4f9d\u8d56\u3002\u7136\u540e\uff0c\u901a\u8fc7\u521b\u5efa BZip2CompressorInputStream \u5b9e\u4f8b\uff0c\u5e76\u4f20\u5165\u4e00\u4e2a FileInputStream \u5b9e\u4f8b\u4f5c\u4e3a\u53c2\u6570\uff0c\u5373\u53ef\u8bfb\u53d6\u548c\u89e3\u538b\u7f29 .bz2 \u6587\u4ef6\u3002\u6700\u540e\uff0c\u6839\u636e\u9700\u8981\u5904\u7406\u89e3\u538b\u7f29\u540e\u7684\u6570\u636e\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
FileInputStream fileIn = new FileInputStream("path\/to\/compressed.bz2");\nBZip2CompressorInputStream bzIn = new BZip2CompressorInputStream(fileIn);\nBufferedReader reader = new BufferedReader(new InputStreamReader(bzIn));\n\nString line;\nwhile ((line = reader.readLine()) != null) {\n    \/\/ \u5904\u7406\u89e3\u538b\u7f29\u540e\u7684\u6570\u636e\n    System.out.println(line);\n}\n\nreader.close();\nbzIn.close();\nfileIn.close();\n<\/code><\/pre>\n
3. \u5982\u4f55\u901a\u8fc7 Java SE \u5185\u7f6e\u7684 java.util.zip \u5305\u89e3\u538b\u7f29 .bz2 \u6587\u4ef6\uff1f<\/strong>
\nJava SE \u5185\u7f6e\u7684 java.util.zip \u5305\u4e5f\u63d0\u4f9b\u4e86\u89e3\u538b\u7f29\u529f\u80fd\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528 GZIPInputStream \u7c7b\u6765\u89e3\u538b\u7f29 .bz2 \u6587\u4ef6\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
FileInputStream fileIn = new FileInputStream("path\/to\/compressed.bz2");\nGZIPInputStream gzipIn = new GZIPInputStream(fileIn);\nBufferedReader reader = new BufferedReader(new InputStreamReader(gzipIn));\n\nString line;\nwhile ((line = reader.readLine()) != null) {\n    \/\/ \u5904\u7406\u89e3\u538b\u7f29\u540e\u7684\u6570\u636e\n    System.out.println(line);\n}\n\nreader.close();\ngzipIn.close();\nfileIn.close();\n<\/code><\/pre>\n
\u8bf7\u6ce8\u610f\uff0c\u4ee5\u4e0a\u793a\u4f8b\u4ee3\u7801\u4ec5\u4f9b\u53c2\u8003\uff0c\u4f60\u9700\u8981\u6839\u636e\u81ea\u5df1\u7684\u5b9e\u9645\u9700\u6c42\u8fdb\u884c\u9002\u5f53\u4fee\u6539\u3002\u53e6\u5916\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u4ee3\u7801\u7684\u7a33\u5b9a\u6027\u548c\u53ef\u9760\u6027\uff0c\u5efa\u8bae\u5728\u751f\u4ea7\u73af\u5883\u4e2d\u4f7f\u7528\u5df2\u7ecf\u5e7f\u6cdb\u6d4b\u8bd5\u7684\u4ee3\u7801\u5e93\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u4f7f\u7528Java\u4ee3\u7801\u89e3\u538bbz2\u538b\u7f29\u6587\u4ef6\u7684\u65b9\u5f0f\u4e3b\u8981\u4f9d\u8d56\u4e8e\u7b2c\u4e09\u65b9\u5e93\u5982Apache Commons Compress\u3002\u60a8 […]","protected":false},"author":3,"featured_media":258281,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/258275"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=258275"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/258275\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/258281"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=258275"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=258275"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=258275"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}