{"id":64744,"date":"2025-05-03T11:38:39","date_gmt":"2025-05-03T03:38:39","guid":{"rendered":"https:\/\/fwq.ai\/blog\/64744\/"},"modified":"2025-05-03T11:38:39","modified_gmt":"2025-05-03T03:38:39","slug":"%e6%8e%a5%e5%8f%a3%e7%bb%a7%e6%89%bf%e6%97%a0%e9%9c%80%e6%b7%bb%e5%8a%a0%e6%96%b0%e6%96%b9%e6%b3%95%e7%9a%84%e6%84%8f%e4%b9%89%e4%bd%95%e5%9c%a8%ef%bc%9f-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/64744\/","title":{"rendered":"\u63a5\u53e3\u7ee7\u627f\u65e0\u9700\u6dfb\u52a0\u65b0\u65b9\u6cd5\u7684\u610f\u4e49\u4f55\u5728\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/173070564224346.jpg\" class=\"aligncenter\" title=\"\u63a5\u53e3\u7ee7\u627f\u65e0\u9700\u6dfb\u52a0\u65b0\u65b9\u6cd5\u7684\u610f\u4e49\u4f55\u5728\uff1f\u63d2\u56fe\" alt=\"\u63a5\u53e3\u7ee7\u627f\u65e0\u9700\u6dfb\u52a0\u65b0\u65b9\u6cd5\u7684\u610f\u4e49\u4f55\u5728\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u63a5\u53e3\u7ee7\u627f\u65e0\u65b0\u65b9\u6cd5\u7684\u610f\u4e49<\/strong><\/p>\n<p>\u63a5\u53e3\u53ef\u4ee5\u7ee7\u627f\u53e6\u4e00\u4e2a\u63a5\u53e3\uff0c\u65e0\u9700\u6dfb\u52a0\u65b0\u7684\u65b9\u6cd5\uff0c\u8fd9\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u5f88\u6709\u610f\u4e49\u3002<\/p>\n<p>\u4f8b\u5982\uff1a<\/p>\n<pre>public interface a {\n  void xx();\n  string yy();\n}\n\npublic interface b extends a {\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u6b64\u65f6\uff0c\u63a5\u53e3 b \u7ee7\u627f\u4e86\u63a5\u53e3 a \u7684\u6240\u6709\u65b9\u6cd5\uff0c\u4f46\u5e76\u6ca1\u6709\u6dfb\u52a0\u4efb\u4f55\u65b0\u65b9\u6cd5\u3002\u8fd9\u53ef\u80fd\u4f1a\u8ba9\u4eba\u7591\u60d1\uff0c\u4e3a\u4ec0\u4e48\u9700\u8981\u521b\u5efa\u8fd9\u6837\u7684\u63a5\u53e3\u3002<\/p>\n<p>\u5176\u5b9e\uff0c\u8fd9\u79cd\u7ee7\u627f\u65b9\u5f0f\u76f8\u5f53\u4e8e\u7ed9\u6d3e\u751f\u81ea\u63a5\u53e3 b \u7684\u7c7b\u578b\u6253\u4e0a\u4e86 b \u7684\u6807\u8bb0\u3002\u8fd9\u6837\u505a\u7684\u597d\u5904\u5728\u4e8e\uff1a<\/p>\n<ul>\n<li> <strong>\u7c7b\u578b\u8fc7\u6ee4\uff1a<\/strong>\u53ef\u4ee5\u65b9\u4fbf\u5730\u4f7f\u7528 b \u63a5\u53e3\u4f5c\u4e3a\u7c7b\u578b\u8fc7\u6ee4\u5668\uff0c\u4f8b\u5982\uff1a<\/li>\n<\/ul>\n<pre>list&lt;a&gt; lista = ...;\nlist&lt;b&gt; listb = lista.stream()\n  .filter(b.class::isinstance)\n  .map(b.class::cast)\n  .tolist();<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u4ece\u5217\u8868 lista \u4e2d\u7b5b\u9009\u51fa\u6240\u6709\u5b9e\u73b0 b \u63a5\u53e3\u7684\u7c7b\u578b\uff0c\u5e76\u5c06\u5b83\u4eec\u8f6c\u6362\u4e3a b \u7c7b\u578b\u3002<\/p>\n<ul>\n<li> <strong>\u6807\u8bb0\u63a5\u53e3\uff1a<\/strong>b \u63a5\u53e3\u8fd8\u53ef\u4ee5\u7528\u4f5c\u6807\u8bb0\u63a5\u53e3\uff0c\u8868\u793a\u5b9e\u73b0\u8be5\u63a5\u53e3\u7684\u7c7b\u578b\u5177\u6709\u7279\u5b9a\u7684\u7279\u6027\u3002\u4f8b\u5982\uff1a<\/li>\n<\/ul>\n<pre>public interface SerializableMarker {\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u901a\u8fc7\u5b9e\u73b0 serializablemarker \u63a5\u53e3\uff0c\u4e00\u4e2a\u7c7b\u578b\u53ef\u4ee5\u8868\u660e\u5b83\u5b9e\u73b0\u4e86 java \u5e8f\u5217\u5316\u63a5\u53e3 java.io.serializable\u3002<\/p>\n<p>\u603b\u4e4b\uff0c\u63a5\u53e3\u7ee7\u627f\u65e0\u65b0\u65b9\u6cd5\u53ef\u4ee5\u7528\u4e8e\u7c7b\u578b\u6807\u8bb0\u548c\u8fc7\u6ee4\uff0c\u4e3a\u4ee3\u7801\u63d0\u4f9b\u66f4\u5f3a\u7684\u53ef\u6269\u5c55\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u63a5\u53e3\u7ee7\u627f\u65e0\u9700\u6dfb\u52a0\u65b0\u65b9\u6cd5\u7684\u610f\u4e49\u4f55\u5728\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a5\u53e3\u7ee7\u627f\u65e0\u65b0\u65b9\u6cd5\u7684\u610f\u4e49 \u63a5\u53e3\u53ef\u4ee5\u7ee7\u627f\u53e6\u4e00\u4e2a\u63a5\u53e3\uff0c\u65e0\u9700\u6dfb\u52a0\u65b0\u7684\u65b9\u6cd5\uff0c\u8fd9\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u5f88\u6709\u610f\u4e49\u3002 \u4f8b\u5982\uff1a public interface a { void xx(); string yy(); } public interface b extends a { } \u767b\u5f55\u540e\u590d\u5236 \u6b64\u65f6\uff0c\u63a5\u53e3 b \u7ee7\u627f\u4e86\u63a5\u53e3 a \u7684\u6240\u6709\u65b9\u6cd5\uff0c\u4f46\u5e76\u6ca1\u6709\u6dfb\u52a0\u4efb\u4f55\u65b0\u65b9\u6cd5\u3002\u8fd9\u53ef\u80fd\u4f1a\u8ba9\u4eba\u7591\u60d1\uff0c\u4e3a\u4ec0\u4e48\u9700\u8981\u521b\u5efa\u8fd9\u6837\u7684\u63a5\u53e3\u3002 \u5176\u5b9e\uff0c\u8fd9\u79cd\u7ee7\u627f\u65b9\u5f0f\u76f8\u5f53\u4e8e\u7ed9\u6d3e\u751f\u81ea\u63a5\u53e3 b \u7684\u7c7b\u578b\u6253\u4e0a\u4e86 b \u7684\u6807\u8bb0\u3002\u8fd9\u6837\u505a\u7684\u597d\u5904\u5728\u4e8e\uff1a \u7c7b\u578b\u8fc7\u6ee4\uff1a\u53ef\u4ee5\u65b9\u4fbf\u5730\u4f7f\u7528 b \u63a5\u53e3\u4f5c\u4e3a\u7c7b\u578b\u8fc7\u6ee4\u5668\uff0c\u4f8b\u5982\uff1a list&lt;a&gt; lista = &#8230;; list&lt;b&gt; listb = lista.stream() .filter(b.class::isinstance) .map(b.class::cast) .tolist(); \u767b\u5f55\u540e\u590d\u5236 \u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u4ece\u5217\u8868 lista \u4e2d\u7b5b\u9009\u51fa\u6240\u6709\u5b9e\u73b0 b \u63a5\u53e3\u7684\u7c7b\u578b\uff0c\u5e76\u5c06\u5b83\u4eec\u8f6c\u6362\u4e3a b \u7c7b\u578b\u3002 \u6807\u8bb0\u63a5\u53e3\uff1ab \u63a5\u53e3\u8fd8\u53ef\u4ee5\u7528\u4f5c\u6807\u8bb0\u63a5\u53e3\uff0c\u8868\u793a\u5b9e\u73b0\u8be5\u63a5\u53e3\u7684\u7c7b\u578b\u5177\u6709\u7279\u5b9a\u7684\u7279\u6027\u3002\u4f8b\u5982\uff1a public [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-64744","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64744","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=64744"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64744\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=64744"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=64744"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=64744"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}