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\u54cd\u5e94\uff0c\u5c31\u5728\u63a5\u4e0b\u6765\u4e00\u6bb5\u65f6\u95f4\u5185\u518d\u6b21\u53d1\u8d77\u56de\u8c03\u8bf7\u6c42\u3002<\/p>\n<p>\u8fd9\u4e48\u505a\u7684\u76ee\u7684\u662f\u4e3a\u4e86\u4fdd\u8bc1\u56de\u8c03\u7684\u6210\u529f\u7387\uff0c\u5bf9\u4e8e\u7b2c\u4e09\u65b9\u652f\u4ed8\u6765\u8bf4\uff0c\u8fd9\u6ca1\u6bdb\u75c5\uff0c\u4f46\u5bf9\u4e8e\u5546\u6237\u652f\u4ed8\u5e73\u53f0\u6765\u8bf4\uff0c\u4e5f\u8bb8\u5c31\u662f\u4e00\u4e2a\u6bd4\u8f83\u5751\u7239\u7684\u8bbe\u8ba1\u3002<\/p>\n<p>\u4f60\u60f3\u4e00\u4e0b\uff0c\u5047\u8bbe\u6709\u4e00\u7b14\u8ba2\u5355\u5728\u652f\u4ed8\u65f6\u6076\u610f\u7be1\u6539\u4e86\u91d1\u989d\uff0c\u56de\u8c03\u6821\u9a8c\u5931\u8d25\uff0c\u8fd4\u56de False \u5230\u7b2c\u4e09\u65b9\u652f\u4ed8\uff0c\u6b64\u65f6\u7b2c\u4e09\u65b9\u652f\u4ed8\u4f1a\u518d\u91cd\u590d\u53d1\u9001\u56de\u8c03\uff0c\u65e0\u8bba\u53d1\u9001\u591a\u5c11\u6b21\u56de\u8c03\uff0c\u90fd\u4f1a\u6821\u9a8c\u5931\u8d25\u3002<\/p>\n<p>\u8fd9\u5c31\u989d\u5916\u589e\u52a0\u4e86\u4e0d\u5fc5\u8981\u7684\u4ea4\u4e92\uff0c\u5f53\u7136\u8fd9\u91cc\u4e5f\u53ef\u4ee5\u7528\u5e42\u7b49\u4f5c\u5904\u7406\uff0c\u4ee5\u4e0b\u662f\u5fae\u4fe1\u652f\u4ed8\u56de\u8c03\u7684\u5e94\u7528\u573a\u666f\u8bf4\u660e\uff1a<\/p>\n<p style=\"text-align: center\">\n<p>\u57fa\u4e8e\u4ee5\u4e0a\u4e24\u70b9\u601d\u8003\uff0c\u6211\u8ba4\u4e3a\u8fd4\u56de False \u5230\u7b2c\u4e09\u65b9\u652f\u4ed8\u662f\u6ca1\u5fc5\u8981\u7684\uff0c\u4e3a\u4e86\u7cfb\u7edf\u7684\u5065\u58ee\u6027\uff0c\u6211\u91c7\u7528\u4e86\u6d88\u606f\u961f\u5217\u6765\u505a\u5f02\u6b65\u5206\u53d1\uff0c\u652f\u4ed8\u5e73\u53f0\u6536\u5230\u56de\u8c03\u8bf7\u6c42\u540e\u76f4\u63a5\u8fd4\u56de True\u3002<\/p>\n<p>\u8fd9\u65f6\u4f60\u53ef\u80fd\u4f1a\u63d0\u51fa\u4e00\u4e2a\u7591\u95ee\uff0c\u5982\u679c\u6b64\u65f6\u6821\u9a8c\u5931\u8d25\u4e86\uff0c\u4f46\u6b64\u65f6\u8fd4\u56de true\uff0c\u4f1a\u4e0d\u4f1a\u51fa\u73b0\u95ee\u9898?<\/p>\n<p>\u9996\u5148\uff0c\u6821\u9a8c\u5931\u8d25\u60c5\u51b5\uff0c\u8ba2\u5355\u5fc5\u5b9a\u662f\u5904\u4e8e\u652f\u4ed8\u5931\u8d25\u7684\u72b6\u6001\uff0c\u6b64\u65f6\u8fd4\u56de True \u7684\u76ee\u7684\u662f\u4e3a\u4e86\u51cf\u5c11\u4e0e\u7b2c\u4e09\u65b9\u652f\u4ed8\u4e0d\u5fc5\u8981\u7684\u8fdc\u7a0b\u4ea4\u4e92\u3002<\/p>\n<p>\u56e0\u4e3a RocketMQ \u7684\u6d88\u606f\u662f\u6301\u4e45\u5316\u5230\u78c1\u76d8\u7684\uff0c\u6240\u4ee5\u7528\u6d88\u606f\u961f\u5217\u6765\u505a\u5f02\u6b65\u5206\u53d1***\u7684\u597d\u5904\uff0c\u5c31\u662f\u53ef\u4ee5\u590d\u67e5\u6d88\u606f\u961f\u5217\u91cc\u9762\u7684\u6d88\u606f\u6765\u6392\u67e5\u95ee\u9898\uff0c\u800c\u4e14\u6d88\u606f\u961f\u5217\u53ef\u4ee5\u5728\u4e1a\u52a1\u7684\u9ad8\u5cf0\u671f\u8fdb\u884c\u6d41\u91cf\u524a\u5cf0\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u7edf\u4e00\u56de\u8c03\u4e0e\u5206\u53d1\u5904\u7406\u7684\u67b6\u6784\u8bbe\u8ba1\u56fe\uff1a<\/p>\n<p style=\"text-align: center\">\n<p><strong><span style=\"font-size: x-large\">\u805a\u5408\u652f\u4ed8<\/span><\/strong><\/p>\n<p>\u652f\u4ed8\u5e73\u53f0\u805a\u5408\u4e86\u591a\u79cd\u7b2c\u4e09\u65b9\u652f\u4ed8\uff0c\u56e0\u6b64\u5728\u8bf7\u6c42\u5c42\u9700\u8981\u505a\u5f88\u591a\u7684\u9002\u914d\u5de5\u4f5c\uff0c\u4ee5\u6ee1\u8db3\u591a\u79cd\u652f\u4ed8\u7684\u9700\u6c42\u3002<\/p>\n<p>\u53ef\u80fd\u4f60\u4f1a\u60f3\uff0c\u76f4\u63a5\u5728\u9002\u914d\u90a3\u91cc\u52a0\u51e0\u884c if else \u4e0d\u5c31\u5f97\u4e86\u5417\uff0c\u8fd9\u4e48\u505a\u4e5f\u6ca1\u95ee\u9898\uff0c\u4e5f\u53ef\u4ee5\u6ee1\u8db3\u591a\u79cd\u652f\u4ed8\u7684\u9700\u6c42\uff0c\u4f46\u4f60\u6709\u6ca1\u6709\u60f3\u8fc7\uff0c\u5047\u8bbe\u6b64\u65f6\u518d\u52a0\u4e00\u4e2a\u7b2c\u4e09\u65b9\u652f\u4ed8\uff0c\u4f60\u4f1a\u600e\u4e48\u505a?<\/p>\n<p>\u4f60\u53ea\u80fd\u5728\u539f\u6709\u65b9\u6cd5\u4e0a\u52a0\u591a\u4e2a else \u6761\u4ef6\uff0c\u8fd9\u6837\u5c31\u4f1a\u5bfc\u81f4\u8bf7\u6c42\u5c42\u4ee3\u7801\u4e0d\u65ad\u5730\u968f\u7740\u4e1a\u52a1\u53d1\u5c55\u6539\u53d8\uff0c\u4f7f\u5f97\u4ee3\u7801\u6781\u5176\u4e0d\u4f18\u96c5\uff0c\u800c\u4e14\u4e5f\u4e0d\u597d\u7ef4\u62a4\u3002<\/p>\n<p>\u8fd9\u65f6\u6211\u4eec\u5c31\u5f97\u7528\u4e0a\u7b56\u7565\u6a21\u5f0f\uff0c\u5c06\u8fd9\u4e9b if else \u4ee3\u7801\u6d88\u9664\uff0c\u5f53\u6211\u4eec\u589e\u52a0\u4e00\u4e2a\u7b2c\u4e09\u65b9\u652f\u4ed8\u65f6\uff0c\u6211\u4eec\u53ea\u9700\u8981\u65b0\u5efa\u4e00\u4e2a Strategy \u7c7b\u5c31\u53ef\u4ee5\u4e86\uff0c\u7b56\u7565\u6a21\u5f0f\u7a76\u7adf\u600e\u4e48\u4f7f\u7528\u53ef\u4ee5\u770b\u770b\u5927\u8bdd\u8bbe\u8ba1\u6a21\u5f0f\u3002<\/p>\n<p>\u56e0\u6b64\u6211\u5728 Builder \u6a21\u5f0f\u524d\u52a0\u591a\u4e86\u4e00\u5c42\u652f\u4ed8\u7b56\u7565\u5c42\uff1a<\/p>\n<p style=\"text-align: center\">\n<p><strong><span style=\"font-size: x-large\">\u8bf7\u6c42\u5904\u7406<\/span><\/strong><\/p>\n<p>\u7531\u4e8e\u652f\u4ed8\u5e73\u53f0\u6d89\u53ca\u5230\u8d44\u91d1\uff0c\u652f\u4ed8\u7684\u5404\u79cd\u8bf7\u6c42\u4e0e\u8fd4\u56de\uff0c\u4ee5\u53ca\u5f02\u5e38\u8bb0\u5f55\u5728\u4e00\u4e2a\u652f\u4ed8\u5e73\u53f0\u4e2d\u5f02\u5e38\u91cd\u8981\uff0c\u56e0\u6b64\u6211\u4eec\u9700\u8981\u8bb0\u5f55\u6bcf\u4e00\u6b21\u7684\u652f\u4ed8\u8bf7\u6c42\u8bb0\u5f55\uff0c\u4ee5\u4fbf\u540e\u7eed\u6392\u67e5\u95ee\u9898\u3002<\/p>\n<p>\u57fa\u4e8e\u8fd9\u70b9\u9700\u6c42\uff0c\u6211\u5728\u5f00\u59cb\u8bf7\u6c42\u7b2c\u4e09\u65b9\u652f\u4ed8\u4e4b\u524d\uff0c\u8bbe\u8ba1\u4e86\u4e00\u5c42 Handler \u5c42\uff0c\u6240\u6709\u7684\u8bf7\u6c42\u90fd\u5fc5\u987b\u7ecf\u8fc7 Handler \u5c42\u8fdb\u884c\u5904\u7406\uff0cHandler \u6838\u5fc3\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>\n \n \n \n <ol>\n  \n  \n  \n  <li><span><span>public<\/span><span>&nbsp;K&nbsp;handle(T&nbsp;t)&nbsp;{&nbsp;<\/span><\/span><\/li>\n  \n  \n  \n  <li><span>&nbsp;&nbsp;K&nbsp;k;&nbsp;<\/span><\/li>\n  \n  \n  \n  <li><span>&nbsp;&nbsp;try&nbsp;{&nbsp;<\/span><\/li>\n  \n  \n  \n  <li><span>&nbsp;&nbsp;&nbsp;&nbsp;before(t);&nbsp;<\/span><\/li>\n  \n  \n  \n  <li><span>&nbsp;&nbsp;&nbsp;&nbsp;k&nbsp;=&nbsp;<span>execute<\/span><span>(t);&nbsp;<\/span><\/span><\/li>\n  \n  \n  \n  <li><span>&nbsp;&nbsp;&nbsp;&nbsp;<span>after<\/span><span>(k);&nbsp;<\/span><\/span><\/li>\n  \n  \n  \n  <li><span>&nbsp;&nbsp;}&nbsp;catch&nbsp;(Exception&nbsp;e)&nbsp;{&nbsp;<\/span><\/li>\n  \n  \n  \n  <li><span>&nbsp;&nbsp;&nbsp;&nbsp;exception(t,&nbsp;e);&nbsp;<\/span><\/li>\n  \n  \n  \n  <li><span>&nbsp;&nbsp;}&nbsp;<\/span><\/li>\n  \n  \n  \n  <li><span>&nbsp;&nbsp;<span>return<\/span><span>&nbsp;k;&nbsp;<\/span><\/span><\/li>\n  \n  \n  \n  <li><span>}&nbsp;<\/span><\/li>\n  \n  \n  \n  <li><span>protected&nbsp;abstract&nbsp;void&nbsp;before(T&nbsp;t);&nbsp;<\/span><\/li>\n  \n  \n  \n  <li><span>protected&nbsp;abstract&nbsp;void&nbsp;<span>after<\/span><span>(K&nbsp;k);&nbsp;<\/span><\/span><\/li>\n  \n  \n  \n  <li><span>protected&nbsp;abstract&nbsp;void&nbsp;exception(T&nbsp;t,&nbsp;Exception&nbsp;exception);&nbsp;<\/span><\/li>\n \n \n \n <\/ol><\/pre>\n<p>\u539f\u5219\u4e0a\u6765\u8bf4\uff0c\u6211\u8bbe\u8ba1\u7684 Handler \u5c42\uff0c\u5229\u7528\u4e86\u6a21\u7248\u6a21\u5f0f\uff0c\u4e0d\u4ec5\u4ec5\u53ef\u4ee5\u5b9e\u73b0\u65e5\u5fd7\u7684\u8bb0\u5f55\uff0c\u8fd8\u53ef\u4ee5\u5b9e\u73b0\u591a\u79cd\u5904\u7406\u65b9\u5f0f\uff0c\u6bd4\u5982\u8bf7\u6c42\u76d1\u63a7\uff0c\u6d88\u606f\u63a8\u9001\u7b49\u7b49\uff0c\u5b9e\u73b0\u4e86 Handler \u5c42\u7684\u9ad8\u6269\u5c55\u6027\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f Handler \u5c42\u7684\u67b6\u6784\u8bbe\u8ba1\u56fe\uff1a<\/p>\n<p style=\"text-align: center\">\n<p><strong><span style=\"font-size: x-large\">\u5199\u5728***<\/span><\/strong><\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u6211\u7684\u652f\u4ed8\u5e73\u53f0\u67b6\u6784\u8bbe\u8ba1\u601d\u8def\uff0c\u603b\u7ed3\u6765\u8bf4\uff0c\u652f\u4ed8\u5e73\u53f0\u9700\u8981\u5177\u5907\u53ef\u6269\u5c55\u6027\u3001\u7a33\u5b9a\u6027\u3001\u9ad8\u53ef\u7528\u6027\u3002<\/p>\n<p>\u56e0\u6b64\u6211\u5728\u8bbe\u8ba1\u652f\u4ed8\u5e73\u53f0\u65f6\u4f7f\u7528\u4e86\u5f88\u591a\u8bbe\u8ba1\u6a21\u5f0f\u4ee5\u53ca\u5f15\u5165\u6d88\u606f\u961f\u5217\u5904\u7406\u56de\u8c03\u5206\u53d1\u7684\u95ee\u9898\uff0c\u4f7f\u5f97\u652f\u4ed8\u5e73\u53f0\u5177\u5907\u8fd9\u51e0\u70b9\u7279\u6027\u3002<\/p>\n<p style=\"text-align: left\">\u5e0c\u671b\u80fd\u591f\u7ed9\u4f60\u4e00\u4e9b\u542f\u53d1\u4e0e\u5e2e\u52a9\uff0c***\u6211\u628a\u652f\u4ed8\u5e73\u53f0\u6574\u4f53\u7684\u67b6\u6784\u8bbe\u8ba1\u56fe\u8d34\u51fa\u6765\uff1a<\/p>\n<p style=\"text-align: center\">\n<p style=\"text-align: center\">\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u5728\u524d\u4e00\u5bb6\u516c\u53f8\u7684***\u4e2a\u4efb\u52a1\u662f\u5f00\u53d1\u7edf\u4e00\u652f\u4ed8\u5e73\u53f0\uff0c\u7531\u4e8e\u516c\u53f8\u7684\u4e1a\u52a1\u9700\u6c42\uff0c\u9700\u8981\u63a5\u5165\u591a\u4e2a\u7b2c\u4e09\u65b9\u652f\u4ed8\u3002 [[269157 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":355790,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[61],"tags":[],"class_list":["post-355789","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-website"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/355789","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=355789"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/355789\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media\/355790"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=355789"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=355789"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=355789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}