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\/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042488881\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br 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src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042488882\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u00a0\u5206\u6790\u5230\u8bbe\u8ba1\u7684\u8fc7\u7a0b\u00a0\u5728\u672c\u8282\u4e2d\uff0c\u6211\u4eec\u63a8\u5bfc\u8f6f\u4ef6\u5206\u6790\u5230\u8bbe\u8ba1\u7684\u8fc7\u7a0b\uff0c\u7531\u7c97\u5230\u7ec6\uff0c\u6700\u7ec8\u843d\u5b9e\u5230\u6211\u4eec\u63a5\u89e6\u5230\u7684 UML 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loading=\"lazy\"><br 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\/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042488884\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br 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\/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042488885\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br 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src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042488887\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br 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\/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042488888\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br 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price \u5c5e\u6027\uff0c\u4e00\u4e2a\u5b50\u8ba2\u5355\u53ef\u4ee5\u6709\u591a\u4e2a\u5546\u54c1\uff0c\u90a3\u4e48\u5b83\u4e5f\u53ea\u80fd\u8ba1\u7b97\u51fa\u5b50\u8ba2\u5355\u7684\u91d1\u989d\u4fe1\u606f\uff0c\u5b83\u7684\u8ba4\u77e5\u662f\u57fa\u4e8e item \u548c quantity\u4e24\u4e2a\u5c5e\u6027\uff0c\u4e3b\u8ba2\u5355\u5305\u542b\u6240\u6709\u5b50\u8ba2\u5355\u7684\u4fe1\u606f\uff0c\u90a3\u4e48\u5c31\u53ef\u4ee5\u8ba1\u7b97\u51fa\u603b\u7684\u8ba2\u5355\u91d1\u989d\u3002\u00a0<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042488890\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u00a0\u4ece\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\u6211\u4eec\u53ef\u4ee5\u770b\u51fa\uff0c\u8ba4\u77e5\u804c\u8d23\u662f\u57fa\u4e8e\u5bf9\u8c61\u5c5e\u6027\u7684\uff0c\u6b63\u6240\u8c13&#8221;\u4e0d\u5728\u5176\u4f4d\u3001\u4e0d\u8c0b\u5176\u653f&#8221;\uff0c\u8ba4\u77e5\u804c\u8d23\u4e00\u5b9a\u4e0d\u4f1a\u8d85\u8fc7\u5b83\u7684\u8ba4\u8bc6\u8303\u56f4\u7684\u3002\u00a0\u884c\u4e3a\u804c\u8d23\u662f\u504f\u9886\u57df\u670d\u52a1\u7684\uff0c\u6709\u7684\u65f6\u5019\u4e00\u4e2a\u804c\u8d23\u4e0d\u5c5e\u4e8e\u67d0\u4e00\u4e2a\u5bf9\u8c61\uff0c\u6bd4\u5982\u8f6c\u8d26\uff0c\u5c31\u662f\u4e00\u4e2a\u884c\u4e3a\uff0c\u8ba9\u5176\u5b83\u7684\u804c\u8d23\u627f\u62c5\u5e76\u4e0d\u5408\u9002\uff0c\u8fd9\u7c7b\u884c\u4e3a\u804c\u8d23\u5f80\u5f80\u662f\u4e00\u4e2a\u663e\u8457\u7684\u4e1a\u52a1\u6d3b\u52a8\uff0c\u6bd4\u5982\u8ba2\u5355\u6e32\u67d3\u3001\u8ba2\u5355\u521b\u5efa\u5c31\u662f\u884c\u4e3a\u804c\u8d23\u800c\u975e\u8ba4\u77e5\u804c\u8d23\u3002\u00a0\u5206\u914d\u804c\u8d23\u4e00\u5b9a\u8981\u9075\u5faa&#8221;\u4fe1\u606f\u4e13\u5bb6&#8221;\u6a21\u5f0f\uff0c\u5b83\u7684\u542b\u4e49\u662f\u5c06\u804c\u8d23\u5206\u914d\u7ed9\u5177\u6709\u5b8c\u6210\u8be5\u804c\u8d23\u6240\u9700\u8981\u4fe1\u606f\u7684\u90a3\u4e2a\u7c7b\uff0c\u4e5f\u5373\u4e0a\u9762\u63d0\u5230\u7684\u8ba4\u8bc6\u4ea7\u751f\u804c\u8d23\u3002\u00a0\u9a8c\u8bc1\u804c\u8d23\u5206\u914d\u7684\u5408\u7406\u6027\u00a0\u6211\u4eec\u671f\u671b\u5206\u914d\u7684\u804c\u8d23\u6ee1\u8db3&#8221;\u9ad8\u5185\u805a\u3001\u4f4e\u8026\u5408&#8221;\uff0c\u600e\u4e48\u68c0\u9a8c\u5462\uff1f\u6211\u4eec\u518d\u56de\u8fc7\u5934\u6765\u601d\u8003\u804c\u8d23\u7684\u5b9a\u4e49\uff1a\u7c7b\u5143\u7684\u5951\u7ea6\u6216\u4e49\u52a1\uff0c\u6362\u53e5\u8bdd\u8bb2\uff0c\u804c\u8d23\u662f\u6ee1\u8db3\u5176\u5b83\u5bf9\u8c61\u6765\u8c03\u7528\u7684\uff0c\u8fd9\u4e2a\u5c31\u4e0e\u6211\u4eec\u753b\u65f6\u5e8f\u56fe\u7684\u76ee\u7684\u662f\u4e00\u81f4\u7684\uff0c\u6bcf\u6b21\u53d1\u751f\u4e00\u6b21\u8c03\u7528\uff0c\u5373\u610f\u5473\u7740\u5176\u5b83\u7684\u5bf9\u8c61\u8981\u63d0\u4f9b\u4e00\u4e2a\u804c\u8d23\u51fa\u6765\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u5728\u65f6\u5e8f\u56fe\u4e2d\u770b\u5bf9\u8c61\u95f4\u7684\u8c03\u7528\u9891\u6b21\uff0c\u5982\u679c\u4e00\u4e2a\u5bf9\u8c61\u88ab\u8c03\u7528\u5f97\u975e\u5e38\u9891\u7e41\uff0c\u6709\u53ef\u80fd\u8fd9\u4e2a\u5bf9\u8c61\u627f\u62c5\u4e86\u592a\u591a\u7684\u804c\u8d23\uff0c\u662f\u4e0d\u662f\u53ef\u4ee5\u5bf9\u5176\u62c6\u5206\uff0c\u628a\u804c\u8d23\u5206\u914d\u4e00\u90e8\u5206\u51fa\u53bb\u3002\u56e0\u6b64\uff0c\u5bf9\u8c61\u804c\u8d23\u5206\u914d\u5e76\u4e0d\u662f\u4e00\u8e74\u800c\u5c31\u7684\uff0c\u9700\u8981\u4e0d\u65ad\u5ba1\u89c6\u3001\u68c0\u9a8c\u3002\u00a0\u5206\u914d\u804c\u8d23\u662f\u8981\u9075\u5faa\u4e00\u5b9a\u7684\u539f\u5219\uff0c\u5982\u521b\u5efa\u8005\u6a21\u5f0f\u3001\u4fe1\u606f\u4e13\u5bb6\u6a21\u5f0f\u3001\u7eaf\u865a\u6784\u6a21\u5f0f\u7b49\uff0c\u8fd9\u4e9b\u539f\u5219\u4f1a\u5728\u4e0b\u4e00\u7bc7\u4e2d\u5355\u72ec\u53bb\u8bb2\u3002\u00a0\u6848\u4f8b\u00a0\u6848\u4f8b\u80cc\u666f\u00a0\u8fd9\u91cc\u4e3e\u4e00\u4e2a\u4f8b\u5b50\uff0c\u8bf4\u660e\u9762\u5411\u8fc7\u7a0b\u548c\u9762\u5411\u5bf9\u8c61\u5728\u5206\u6790\u3001\u7f16\u5199\u4ee3\u7801\u7684\u5dee\u5f02\u6027\uff0c\u8ba1\u7a0e\u9700\u8981\u5224\u65ad\u662f\u5426\u6ee1\u8db3\u8ba1\u7a0e\u89c4\u5219\uff0c\u6bd4\u5982\u865a\u62df\u5546\u54c1\u4e0d\u8ba1\u7a0e\uff08\u624b\u673a\u5145\u503c\u4e4b\u7c7b\uff09\u3001\u6709\u4e9b\u514d\u7a0e\u5730\u5740\u4e0d\u8ba1\u7a0e\u3001\u5c0f B \u4e70\u5bb6\u4e5f\u4e0d\u8ba1\u7a0e\u7b49\uff0c\u56e0\u6b64\u9700\u8981\u63d0\u4f9b\u4e00\u4e2a\u8ba1\u7a0e\u8fc7\u6ee4\u5224\u65ad\u903b\u8f91\u3002\u00a0\u5e38\u89c4\u9762\u5411\u8fc7\u7a0b\u5b9e\u73b0\u00a0\u9762\u5411\u8fc7\u7a0b\u7684\u601d\u8def\u5f88\u7b80\u5355\uff0c\u63d0\u4f9b\u4e00\u4e2a\u8fc7\u6ee4\u65b9\u6cd5\u4f9d\u6b21\u5904\u7406\u4e0b\u9762\u903b\u8f91\uff1a\u8fc7\u6ee4\u865a\u62df\u5546\u54c1\u8ba1\u7a0e\u8bf7\u6c42\u3001\u8fc7\u6ee4\u514d\u7a0e\u5730\u5740\u8ba1\u7a0e\u8bf7\u6c42\u3001\u8fc7\u6ee4\u5c0f B \u4e70\u5bb6\u8ba1\u7a0e\u8bf7\u6c42\u3002\u00a0<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042488891\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u00a0public void filter(List&lt;TaxCalculateRequest&gt; request){<\/p>\n<pre><code> \n \/\/ \u8fc7\u6ee4\u865a\u62df\u5546\u54c1\u8ba1\u7a0e\u8bf7\u6c42\n filterVirtualItem(request);\n\n \/\/ \u8fc7\u6ee4\u514d\u7a0e\u5730\u5740\u8ba1\u7a0e\u8bf7\u6c42(\u5373\u5916\u5c9b)\n filterOuterIsland(request);\n\n \/\/ \u8fc7\u6ee4\u5c0fB\u4e70\u5bb6\u8ba1\u7a0e\u8bf7\u6c42\n filterPurchaseType(reqeust);\n<\/code><\/pre>\n<p>}\u00a0\u9762\u5411\u5bf9\u8c61\u5b9e\u73b0\u00a0\u9762\u5411\u8fc7\u7a0b\u662f\u4ece\u8fc7\u7a0b\u89c6\u89d2\u6216\u8005\u662f\u529f\u80fd\u89c6\u89d2\u5206\u6790\u95ee\u9898\uff0c\u800c\u9762\u5411\u5bf9\u8c61\u662f\u4ece\u5bf9\u8c61\u7684\u89c6\u89d2\u5206\u6790\u95ee\u9898\uff0c\u8fc7\u6ee4\u8ba1\u7a0e\u8bf7\u6c42\u662f\u8ba1\u7a0e\u8fc7\u6ee4\u5668\u5224\u65ad\u8ba1\u7a0e\u8bf7\u6c42\u662f\u5426\u6ee1\u8db3\u8ba1\u7a0e\u89c4\u5219\uff0c\u8fd9\u91cc\u5c31\u5305\u542b\u4e86\u4e24\u4e2a\u5bf9\u8c61\uff1a\u8ba1\u7a0e\u8fc7\u6ee4\u5668\u548c\u8ba1\u7a0e\u89c4\u5219\uff0c\u5224\u65ad\u662f\u5426\u6ee1\u8db3\u8ba1\u7a0e\u8981\u6c42\u8fd9\u4e2a\u804c\u8d23\u5e94\u8be5\u662f\u5728\u5177\u4f53\u7684\u8ba1\u7a0e\u89c4\u5219\u5904\u7406\u5668\u4e2d\uff0c\u6bd4\u5982\u662f\u5426\u662f\u5c0f B \u4e70\u5bb6\u7b49\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u753b\u51fa\u5bf9\u8c61\u6a21\u578b\u3002\u00a0<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042488892\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u00a0\u5173\u952e\u4ee3\u7801\u5982\u4e0b\uff1a\u00a0public abstract class AbstractRuleHandler {<\/p>\n<pre><code>\/**\n * \u62bd\u8c61\u7684\u4e1a\u52a1\u89c4\u5219\u5904\u7406\n *\n * @param request\n *\/\npublic abstract void handler(TaxCalculateRequest request);\n\n\/**\n * \u6784\u9020\u51fd\u6570\u91cc\u5b8c\u6210\u6ce8\u518c\n *\/\npublic AbstractRuleHandler() {\n    TaxCaluclateFilter.register(this);\n}<\/code><\/pre>\n<p>}\u00a0\u603b\u7ed3\u00a0\u5728\u6587\u7ae0\u4e2d\u63d0\u5230\uff0c\u9762\u5411\u5bf9\u8c61\u7684\u5e95\u5c42\u903b\u8f91\u662f\u57fa\u4e8e\u73b0\u5b9e\u4e8b\u7269\u505a\u7684\u62bd\u8c61\u6620\u5c04\uff0c\u91cd\u8981\u7684\u4e0d\u662f\u8981\u9762\u5411\u5bf9\u8c61\u5177\u4f53\u6280\u672f\u7684\u4f7f\u7528\u4e0a\uff0c\u800c\u662f\u5206\u6790\u95ee\u9898\u7684\u601d\u7ef4\u4e0a\uff0c\u8fd9\u662f\u6700\u96be\u7684\uff0c\u5b83\u6700\u5927\u7684\u597d\u5904\u662f\u95ee\u9898\u7a7a\u95f4\u5230\u89e3\u7a7a\u95f4\u662f\u4e00\u4e00\u76f4\u63a5\u6620\u5c04\u7684\uff0c\u8bf7\u6ce8\u610f\u662f\u4e00\u4e00\u76f4\u63a5\u6620\u5c04\uff0c\u5b83\u610f\u5473\u7740\u6211\u4eec\u5728\u8ba8\u8bba\u65b9\u6848\u7684\u65f6\u5019\uff0c\u5b8c\u5168\u53ef\u4ee5\u6620\u5c04\u5230\u95ee\u9898\u7a7a\u95f4\uff0c\u5982\u679c\u662f\u95f4\u63a5\u6620\u5c04\uff0c\u4e5f\u5c31\u610f\u5473\u7740\u8bbe\u8ba1\u7684\u65b9\u6848\u540e\u9762\u4f1a\u9762\u4e34\u91cd\u65b0\u8bbe\u8ba1\u7684\u53ef\u80fd\u6027\uff0c\u56e0\u4e3a\u5b83\u662f\u57fa\u4e8e\u573a\u666f\u6216\u529f\u80fd\u505a\u51fa\u7684\u5f52\u7eb3\u8bbe\u8ba1\uff0c\u800c\u4e14\u662f\u8868\u5c42\u7684\u8bbe\u8ba1\u3002\u771f\u6b63\u638c\u63e1\u4e86\u9762\u5411\u5bf9\u8c61\u5206\u6790\u548c\u8bbe\u8ba1\u7684\u65b9\u6cd5\uff0c\u4e5f\u4f53\u4f1a\u5230\u5176\u4e2d\u7684\u76ca\u5904\uff0c\u5bf9\u7406\u89e3\u4e1a\u52a1\u3001\u65b9\u6848\u8bbe\u8ba1\u3001\u7f16\u7801\u5f00\u53d1\u90fd\u6709\u597d\u5904\u3002\u539f\u6587\u94fe\u63a5\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=gKe%2By0fELAUdTRUnvjYKWw%3D%3D.LCDuc4AaCoAzz6nZPdMeYIYVSQ5PLysXjO7q3sqign%2FrG8TTc3ZOcZgvOZL6P30V\" rel=\"nofollow\">https:\/\/click.aliyun.com\/m\/10&#8230;<\/a>\u672c\u6587\u4e3a\u963f\u91cc\u4e91\u539f\u521b\u5185\u5bb9\uff0c\u672a\u7ecf\u5141\u8bb8\u4e0d\u5f97\u8f6c\u8f7d\u3002<\/p>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000042488873\">https:\/\/segmentfault.com\/a\/1190000042488873<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u4ecb\uff1a\u00a0\u771f\u6b63\u638c\u63e1\u4e86\u9762\u5411\u5bf9\u8c61\u5206\u6790\u548c\u8bbe\u8ba1\u7684\u65b9\u6cd5\uff0c\u4e5f\u4f53\u4f1a\u5230\u5176\u4e2d\u7684\u76ca\u5904\uff0c\u5bf9\u7406\u89e3\u4e1a\u52a1\u3001\u65b9\u6848\u8bbe\u8ba1\u3001\u7f16\u7801\u5f00\u53d1\u90fd\u6709\u597d\u5904\u3002\u4f5c\u8005\uff1a [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[],"tags":[],"class_list":["post-10006492","post","type-post","status-publish","format-standard","hentry"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006492","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10006492"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006492\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10006492"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10006492"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10006492"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}