{"id":208194,"date":"2025-07-08T11:53:14","date_gmt":"2025-07-08T03:53:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/208194\/"},"modified":"2025-07-08T11:53:14","modified_gmt":"2025-07-08T03:53:14","slug":"%e5%a6%82%e4%bd%95%e7%94%a8%e5%9c%b0%e5%9b%be%e6%9b%bf%e6%8d%a2%e5%a4%9a%e4%b8%aaif-else-if","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208194\/","title":{"rendered":"\u5982\u4f55\u7528\u5730\u56fe\u66ff\u6362\u591a\u4e2a\u201cif-else-if\u201d"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5982\u4f55\u7528\u5730\u56fe\u66ff\u6362\u591a\u4e2a\u201cif-else-if\u201d<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-30 09:36:32<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u6700\u8fd1\u53d1\u73b0\u4e0d\u5c11\u5c0f\u4f19\u4f34\u90fd\u5bf9Golang<\/span>\u5f88\u611f\u5174\u8da3\uff0c\u6240\u4ee5\u4eca\u5929\u7ee7\u7eed\u7ed9\u5927\u5bb6\u4ecb\u7ecdGolang<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\uff0c\u672c\u6587\u300a\u5982\u4f55\u7528\u5730\u56fe\u66ff\u6362\u591a\u4e2a\u201cif-else-if\u201d\u300b<\/span>\u4e3b\u8981\u5185\u5bb9\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01\u5f53\u7136\u5982\u679c\u9605\u8bfb\u672c\u6587\u65f6\u5b58\u5728\u4e0d\u540c\u60f3\u6cd5\uff0c\u53ef\u4ee5\u5728\u8bc4\u8bba\u4e2d\u8868\u8fbe\uff0c\u4f46\u662f\u8bf7\u52ff\u4f7f\u7528\u8fc7\u6fc0\u7684\u63aa\u8f9e~<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u6211\u5bf9\u591a\u5c42 if-else-if \u6761\u4ef6\u611f\u5230\u62c5\u5fe7\uff0c\u56e0\u6b64\u6211\u60f3\u901a\u8fc7\u4f7f\u7528\u5730\u56fe\u6765\u7b80\u77ed\u8bf4\u660e\u3002<\/p>\n

\u8bf7\u53c2\u9605 if-else-if \u4e2d\u7684\u4ee5\u4e0b\u4ee3\u7801\uff0c\u6211\u60f3\u7528\u5730\u56fe\u66ff\u6362\u5b83\u3002<\/p>\n

function, args := APIstub.GetFunctionAndParameters()\n\nif function == \"queryProduce\" {\n    return s.queryProduce(APIstub, args)\n} else if function == \"initLedger\" {\n    return s.initLedger(APIstub)\n} else if function == \"createProduce\" {\n    return s.createProduce(APIstub, args)\n} else if function == \"queryAllProduces\" {\n    return s.queryAllProduces(APIstub)\n} else if function == \"changeProduceStatus\" {\n    return s.changeProduceStatus(APIstub, args)\n}\n\nreturn shim.Error(\"Invalid Smart Contract function name.\")\n}<\/pre>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u5bf9\u4e8e\u4f60\u6709\u4e00\u4e2a \u4f1a\u5f88\u597d\uff1a<\/p>\n
switch function {\ncase \"queryproduce\":\n    return s.queryproduce(apistub, args)\ncase \"initledger\":\n    return s.initledger(apistub)\ncase \"createproduce\":\n    return s.createproduce(apistub, args)\ncase \"queryallproduces\":\n    return s.queryallproduces(apistub)\ncase \"changeproducestatus\":\n    return s.changeproducestatus(apistub, args)\n}<\/pre>\n
\u4f7f\u7528\u6620\u5c04\u4f1a\u5f88\u4e0d\u65b9\u4fbf\uff0c\u56e0\u4e3a\u5e76\u975e\u6240\u6709\u65b9\u6cd5\u90fd\u5177\u6709\u76f8\u540c\u7684\u7b7e\u540d\uff0c\u4f46\u60a8\u53ef\u4ee5\u4f7f\u7528\u591a\u4e2a\u6620\u5c04\u3002<\/p>\n
\u53e6\u4e00\u79cd\u89e3\u51b3\u65b9\u6848\u53ef\u80fd\u662f\u4f7f\u7528\u53cd\u5c04\u6765\u8c03\u7528\u65b9\u6cd5\uff0c\u4f46\u540c\u6837\uff0c\u5904\u7406\u4e0d\u540c\u7684\u53c2\u6570\u4f1a\u5f88\u4e0d\u65b9\u4fbf\u3002\u53cd\u5c04\u4e5f\u6bd4\u8f83\u6162\uff0c\u66f4\u4e0d\u7528\u8bf4\u60a8\u5fc5\u987b\u6ce8\u610f\u4e0d\u5141\u8bb8\u8c03\u7528\u4e0d\u6253\u7b97\u516c\u5f00\u7684\u65b9\u6cd5\u3002\u4f8b\u5982\uff0c\u8bf7\u53c2\u9605 \u3002<\/p>\n
\u53ef\u4ee5<\/em>\u5c06\u60a8\u6240\u62e5\u6709\u7684\u5185\u5bb9\u8868\u8fbe\u4e3a\u5730\u56fe\u3002\u8fd9\u91cc\u7684\u57fa\u672c\u8bbe\u7f6e\u662f\uff0c\u65e0\u8bba\u4f60\u8d70\u54ea\u6761\u8def\uff0c\u4f60\u90fd\u4f1a\u5f97\u5230\u4e00\u4e9b\u53ef\u4ee5\u4e0d\u5e26\u53c2\u6570\u8c03\u7528\u7684\u51fd\u6570\uff0c\u5e76\u4e14\u5b83\u603b\u662f\u8fd4\u56de\u76f8\u540c\u7684\u7c7b\u578b\uff08error<\/code>\uff09\u3002\u6211\u53ef\u80fd\u4f1a\u660e\u786e\u4f20\u9012 args<\/code> \u3002<\/p>\n
\u5176\u9ad8\u7ea7\u7ed3\u6784\u662f\u62e5\u6709\u51fd\u6570\u540d\u79f0\u5230\u51fd\u6570\u7684\u6620\u5c04\uff0c\u7136\u540e\u8c03\u7528\u6240\u9009\u51fd\u6570\u3002<\/p>\n
funcmap := map[string]func([]string) error{...}\nfuncname, args := apistub.getfunctionandparameters()\nf := funcmap[funcname]\nif f == nil {\n    f = func(_ []string) error {\n        return shim.error(\"invalid smart contract function name.\")\n    }\n}\nreturn f(args)<\/pre>\n
\u5730\u56fe\u8bed\u6cd5\u53d8\u5f97\u6709\u70b9\u5197\u957f<\/p>\n
funcMap := map[string]func([]string) error{\n    \"queryProduce\": func(args []string) error {\n        return s.queryProduce(APIstub, args)\n    },\n    \"initLedger\": func(_ []string) error {\n        return s.initLedger(APIstub)\n    },\n}<\/pre>\n
\u5982\u679c\u60a8\u8981\u5728\u591a\u4e2a\u5730\u65b9\u8c03\u7528\u5b83\uff0c\u6216\u8005\u60a8\u60f3\u8981\u4e00\u4e2a\u5355\u72ec\u7684\u9a8c\u8bc1\u6b65\u9aa4\uff0c\u5982\u679c\u4f7f\u7528\u7684\u8bdd\u5c06\u5b9a\u4e49\u4e00\u4e9b\u540d\u79f0\uff0c\u6216\u8005\u5982\u679c\u51fd\u6570\u7684\u5b9e\u9645\u5217\u8868\u662f\u52a8\u6001\u7684\uff08\u60a8\u53ef\u4ee5\u6dfb\u52a0\u6216\u5728\u8fd0\u884c\u65f6\u4ece\u5730\u56fe\u4e2d\u5220\u9664\u5185\u5bb9\uff09\u3002\u4e0d\u4e00\u81f4\u7684\u65b9\u6cd5\u7b7e\u540d\u786e\u5b9e\u4f1a\u5e26\u6765\u590d\u6742\u6027\uff0c\u5e76\u4e14\u4f7f\u6240\u6709\u5185\u5bb9\u4fdd\u6301\u4e00\u81f4\u4f1a\u6709\u6240\u5e2e\u52a9\uff08\u4f7f initledger<\/code> \u7b49\u51fd\u6570\u91c7\u7528\u53c2\u6570\u5217\u8868\uff0c\u5373\u4f7f\u5b83\u672a\u4f7f\u7528\uff09\u3002<\/p>\n
\u5728\u666e\u901a\u4ee3\u7801\u4e2d\uff0c\u6211\u5e0c\u671b @icza \u7684\u7b54\u6848\u4e2d\u7684 switch<\/code> \u5f62\u5f0f\u66f4\u52a0\u60ef\u7528\u3002<\/p>\n
\u6587\u4e2d\u5173\u4e8e\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300a\u5982\u4f55\u7528\u5730\u56fe\u66ff\u6362\u591a\u4e2a\u201cif-else-if\u201d\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/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-208194","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208194","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=208194"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208194\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=208194"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=208194"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=208194"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}