{"id":203357,"date":"2025-05-22T13:08:03","date_gmt":"2025-05-22T05:08:03","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203357\/"},"modified":"2025-05-22T13:08:03","modified_gmt":"2025-05-22T05:08:03","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-java-%e7%88%ac%e5%8f%96%e5%b5%8c%e5%85%a5%e9%a1%b5%e9%9d%a2%e4%b8%ad%e7%9a%84%e5%9b%be%e7%89%87%e9%aa%8c%e8%af%81%e7%a0%81%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203357\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528 Java \u722c\u53d6\u5d4c\u5165\u9875\u9762\u4e2d\u7684\u56fe\u7247\u9a8c\u8bc1\u7801\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u5982\u4f55\u4f7f\u7528 Java \u722c\u53d6\u5d4c\u5165\u9875\u9762\u4e2d\u7684\u56fe\u7247\u9a8c\u8bc1\u7801\uff1f<\/h1>\n

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<\/p>\n

\u83b7\u53d6\u5d4c\u5957\u9875\u9762\u56fe\u7247\u9a8c\u8bc1\u7801\u7684 java \u65b9\u6cd5<\/strong><\/p>\n

\u672c\u6587\u5c06\u8ba8\u8bba\u5982\u4f55\u4f7f\u7528 java \u722c\u53d6\u5305\u542b\u5728\u9875\u9762\u4e2d\u7684\u56fe\u7247\u9a8c\u8bc1\u7801\u3002<\/p>\n

\u95ee\u9898\uff1a<\/strong><\/p>\n

\u6211\u4eec\u65e0\u6cd5\u76f4\u63a5\u8bbf\u95ee\u5d4c\u5165\u9875\u9762\u7684\u56fe\u7247\u9a8c\u8bc1\u7801\uff0c\u5176\u8fd4\u56de\u7684\u662f\u4e00\u4e2a jfig \u9875\u9762\u3002<\/p>\n

\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><\/p>\n

\u91c7\u7528\u4ee5\u4e0b\u6b65\u9aa4\u5b9e\u73b0\u722c\u53d6\uff1a<\/p>\n

    \n
  1. \u83b7\u53d6\u5305\u542b\u9a8c\u8bc1\u7801\u7684\u9875\u9762\u7684 html\u3002<\/li>\n
  2. \u89e3\u6790 html \u4ee5\u67e5\u627e\u9a8c\u8bc1\u7801\u56fe\u50cf\u7684 url\u3002\u8fd9\u901a\u5e38\u9700\u8981\u6b63\u5219\u8868\u8fbe\u5f0f\u3002<\/li>\n
  3. \u4f7f\u7528 url \u5efa\u7acb\u8fde\u63a5\u5e76\u4f7f\u7528 cookie \u8bbf\u95ee\u56fe\u50cf\u3002<\/li>\n
  4. \u5c06\u56fe\u50cf\u7684\u5185\u5bb9\u4fdd\u5b58\u4e3a\u4e8c\u8fdb\u5236\u6587\u4ef6\u3002<\/li>\n<\/ol>\n

    \u793a\u4f8b java \u4ee3\u7801\uff1a<\/strong><\/p>\n

    \u4ee5\u4e0b\u4ee3\u7801\u63d0\u4f9b\u4e86\u793a\u4f8b\uff1a<\/p>\n

    import java.io.FileOutputStream;\nimport java.io.IOException;\nimport java.net.HttpURLConnection;\nimport java.net.MalformedURLException;\nimport java.net.URL;\nimport java.util.regex.Matcher;\nimport java.util.regex.Pattern;\n\npublic class RetrieveEmbeddedImage {\n\n    public static void main(String[] args) {\n        try {\n            \/\/ \u89e3\u6790 HTML \u83b7\u53d6\u9a8c\u8bc1\u7801 URL\n            String html = getHtml();\n            Pattern pattern = Pattern.compile(\"(\/public\/v4\/common\/control\/page\/image\\\\.jsp\\\\?date=\" + \".*)\");\n            Matcher matcher = pattern.matcher(html);\n            String imageUrl = \"\";\n            if (matcher.find()) {\n                imageUrl = matcher.group(1);\n            } else {\n                throw new Exception(\"\u65e0\u6cd5\u627e\u5230\u9a8c\u8bc1\u7801 URL\");\n            }\n\n            \/\/ \u83b7\u53d6\u9a8c\u8bc1\u7801\u56fe\u50cf\n            URL url = new URL(\"http:\/\/jx.189.cn\" + imageUrl);\n            HttpURLConnection connection = (HttpURLConnection) url.openConnection();\n            connection.setRequestProperty(\"Cookie\", \"[YOUR_COOKIE_HERE]\");  \/\/ \u5c06 Cookie \u8bbe\u7f6e\u4e3a\u76ee\u6807\u7f51\u7ad9\u7684 Cookie\n            byte[] imageData = connection.getInputStream().readAllBytes();\n\n            \/\/ \u5c06\u56fe\u50cf\u4fdd\u5b58\u5230\u6587\u4ef6\n            FileOutputStream fos = new FileOutputStream(\"captcha.jpg\");\n            fos.write(imageData);\n            fos.close();\n\n            System.out.println(\"\u9a8c\u8bc1\u7801\u56fe\u50cf\u5df2\u4fdd\u5b58\u4e3a captcha.jpg\u3002\");\n        } catch (MalformedURLException e) {\n            e.printStackTrace();\n        } catch (IOException e) {\n            e.printStackTrace();\n        } catch (Exception e) {\n            e.printStackTrace();\n        }\n    }\n\n    \/\/ \u83b7\u53d6\u5305\u542b\u9a8c\u8bc1\u7801\u7684\u9875\u9762\u7684 HTML\n    private static String getHtml() {\n        \/\/ [\u5728\u6b64\u5904\u5b9e\u73b0\u83b7\u53d6 HTML \u7684\u903b\u8f91]\n        return \"\";\n    }\n}<\/pre>\n
    \u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300a\u5982\u4f55\u4f7f\u7528 Java \u722c\u53d6\u5d4c\u5165\u9875\u9762\u4e2d\u7684\u56fe\u7247\u9a8c\u8bc1\u7801\uff1f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5982\u4f55\u4f7f\u7528 Java \u722c\u53d6\u5d4c\u5165\u9875\u9762...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-203357","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203357","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=203357"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203357\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203357"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203357"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203357"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}