{"id":48487,"date":"2024-12-02T10:28:32","date_gmt":"2024-12-02T02:28:32","guid":{"rendered":"https:\/\/fwq.ai\/blog\/48487\/"},"modified":"2024-12-02T10:28:32","modified_gmt":"2024-12-02T02:28:32","slug":"java-%e4%b8%ad%e9%80%92%e8%bf%9b%e5%bc%8f%e5%88%a4%e6%96%ad%e7%9a%84%e4%bc%98%e5%8c%96%e6%96%b9%e6%a1%88%ef%bc%9a%e5%a6%82%e4%bd%95%e9%81%bf%e5%85%8d%e9%87%8d%e5%a4%8d%e7%9a%84-if-else-%e8%af%ad-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/48487\/","title":{"rendered":"Java \u4e2d\u9012\u8fdb\u5f0f\u5224\u65ad\u7684\u4f18\u5316\u65b9\u6848\uff1a\u5982\u4f55\u907f\u514d\u91cd\u590d\u7684 if-else \u8bed\u53e5\uff1f"},"content":{"rendered":"

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

Java \u4e2d\u9012\u8fdb\u5f0f\u5224\u65ad\u7684\u4f18\u5316\u65b9\u6848\uff1a\u5982\u4f55\u907f\u514d\u91cd\u590d\u7684 if-else \u8bed\u53e5\uff1f<\/h1>\n

\u6587\u7ae0\u5c0f\u767d\u4e00\u679a\uff0c\u6b63\u5728\u4e0d\u65ad\u5b66\u4e60\u79ef\u7d2f\u77e5\u8bc6\uff0c\u73b0\u5c06\u5b66\u4e60\u5230\u7684\u77e5\u8bc6\u8bb0\u5f55\u4e00\u4e0b\uff0c\u4e5f\u662f\u5c06\u6211\u7684\u6240\u5f97\u5206\u4eab\u7ed9\u5927\u5bb6\uff01\u800c\u4eca\u5929\u8fd9\u7bc7\u6587\u7ae0\u300aJava \u4e2d\u9012\u8fdb\u5f0f\u5224\u65ad\u7684\u4f18\u5316\u65b9\u6848\uff1a\u5982\u4f55\u907f\u514d\u91cd\u590d\u7684 if-else \u8bed\u53e5\uff1f\u300b\u5e26\u5927\u5bb6\u6765\u4e86\u89e3\u4e00\u4e0b##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n

<\/p>\n

\"Java<\/p>\n

java\u4e2d\u9012\u8fdb\u5f0f\u5224\u65ad\u7684\u4f18\u5316\u65b9\u6848<\/strong><\/p>\n

\u5728java\u4e2d\u8fdb\u884c\u9012\u8fdb\u5f0f\u5224\u65ad\u65f6\uff0c\u9700\u8981\u6839\u636e\u6bcf\u4e00\u5c42\u7684\u6761\u4ef6\u662f\u5426\u6ee1\u8db3\u6765\u6267\u884c\u4e0d\u540c\u7684\u4ee3\u7801\u903b\u8f91\u3002\u539f\u59cb\u4ee3\u7801\u4e2d\u4f7f\u7528\u5927\u91cf\u7684if-else\u8bed\u53e5\uff0c\u4ee3\u7801\u5197\u4f59\u4e14\u53ef\u8bfb\u6027\u5dee\u3002\u4e0b\u9762\u4ecb\u7ecd\u4e24\u79cd\u4f18\u5316\u65b9\u6848\uff1a<\/p>\n

\u65b9\u6848\u4e00\uff1a\u4f7f\u7528switch-case<\/strong><\/p>\n

\u6211\u4eec\u53ef\u4ee5\u5148\u6839\u636e\u4e0d\u540c\u7684\u60c5\u51b5\u7ec4\u5408\uff0c\u751f\u6210\u4e00\u4e2a\u5bf9\u5e94\u7684\u72b6\u6001\u7801\u3002\u7136\u540e\u901a\u8fc7switch-case\u8bed\u53e5\u6839\u636e\u72b6\u6001\u7801\u76f4\u63a5\u6267\u884c\u76f8\u5e94\u7684\u4ee3\u7801\u903b\u8f91\u3002\u8be5\u65b9\u6848\u53ef\u4ee5\u51cf\u5c11if-else\u8bed\u53e5\u7684\u5c42\u7ea7\uff0c\u4f7f\u5f97\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u3002<\/p>\n

private static final int code_condition_one = 0000;\nprivate static final int code_condition_two = 0001;\nprivate static final int code_condition_three = 0011;\nprivate static final int code_condition_four = 0111;\nprivate static final int code_condition_five = 1111;\n\nprivate static void test(string a,string b,string c,string d){\n    switch (init(a,b,c,d)){\n        case code_condition_one:\n            \/\/ do something ...\n            break;\n        case code_condition_two:\n            \/\/do something ...\n            break;\n        case code_condition_three:\n            \/\/do something ...\n            break;\n        case code_condition_four:\n            \/\/do something ...\n            break;\n        case code_condition_five:\n            \/\/do something ...\n            break;\n    }\n}\n\nprivate static int init(string ... allparam){\n    if(allparam == null){\n        return 1;\n    }\n    string resultnumberstr = \"\";\n    for (string s : allparam) {\n        resultnumberstr += stringutils.isnotempty(s) ? 0 : 1;\n    }\n    return integer.valueof(resultnumberstr);\n}<\/pre>\n
\u65b9\u6848\u4e8c\uff1a\u4f7f\u7528\u53cd\u5c04<\/strong><\/p>\n
\u8be5\u65b9\u6848\u901a\u8fc7\u53cd\u5c04\u673a\u5236\uff0c\u6839\u636e\u4e0d\u540c\u7684\u72b6\u6001\u7801\u52a8\u6001\u751f\u6210\u5bf9\u5e94\u7684action\u5bf9\u8c61\uff0c\u7136\u540e\u8c03\u7528\u5bf9\u8c61\u7684\u7279\u5b9a\u65b9\u6cd5\u6267\u884c\u4ee3\u7801\u903b\u8f91\u3002\u8be5\u65b9\u6848\u66f4\u52a0\u7075\u6d3b\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u8981\u52a8\u6001\u6dfb\u52a0\u65b0\u7684\u5224\u65ad\u6761\u4ef6\u548c\u6267\u884c\u903b\u8f91\u3002<\/p>\n
static class Action{\n    private Class targetInvokeClass;\n    private String targetMethodName;\n    private Class[] parameterTypes;\n    private Object[] params;\n    private boolean isCurrentClass;\n    private boolean isNoParams;\n\n    \/\/ getters and setters\n}\n\nprivate static HashMap<Object,Action> ACTION_MAP = new HashMap<>();\n\nprivate static void test(String a,String b,String c,String d){\n    int result = init(a, b, c, d);\n    Action action = ACTION_MAP.get(result);\n    if(action != null){\n        handler(action);\n    }else{\n        System.out.println(\"\u672a\u627e\u5230\u5bf9\u5e94\u6620\u5c04\u952e\");\n    }\n}\n\nprivate static void handler(Action action) {\n    try {\n        Method method = null;\n        Class cls = null;\n        if (action.isCurrentClass()) {\n            method = getMethod(SolutionTwo.class,action.getTargetMethodName(),action.getParameterTypes());\n            cls = SolutionTwo.class;\n        }else{\n            Class targetClass = action.getTargetInvokeClass();\n            method = getMethod(targetClass, action.getTargetMethodName(), action.getParameterTypes());\n            cls = action.getTargetInvokeClass();\n        }\n        result = method.invoke(cls.newInstance(), action.getParams());\n    } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException | InstantiationException e) {\n        e.printStackTrace();\n    }\n}\n\nprivate static Method getMethod(Class cls,String methodName,Class[] parameterTypes) throws NoSuchMethodException {\n    return cls.getMethod(methodName,parameterTypes);\n}\n\n\nprivate static int init(String ... allParam){\n    if(allParam == null){\n        return 1;\n    }\n    String resultNumberStr = \"\";\n    for (String s : allParam) {\n        resultNumberStr += StringUtils.isNotEmpty(s) ? 0 : 1;\n    }\n    return Integer.valueOf(resultNumberStr);\n}<\/pre>\n
\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\u7c73\u4e91\uff01\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
Java \u4e2d\u9012\u8fdb\u5f0f\u5224\u65ad\u7684\u4f18\u5316\u65b9\u6848\uff1a\u5982\u4f55\u907f\u514d\u91cd\u590d\u7684 if-else \u8bed\u53e5\uff1f \u6587\u7ae0\u5c0f\u767d\u4e00\u679a\uff0c\u6b63\u5728\u4e0d\u65ad\u5b66\u4e60\u79ef\u7d2f\u77e5\u8bc6\uff0c\u73b0\u5c06\u5b66\u4e60\u5230\u7684\u77e5\u8bc6\u8bb0\u5f55\u4e00\u4e0b\uff0c\u4e5f\u662f\u5c06\u6211\u7684\u6240\u5f97\u5206\u4eab\u7ed9\u5927\u5bb6\uff01\u800c\u4eca\u5929\u8fd9\u7bc7\u6587\u7ae0\u300aJava \u4e2d\u9012\u8fdb\u5f0f\u5224\u65ad\u7684\u4f18\u5316\u65b9\u6848\uff1a\u5982\u4f55\u907f\u514d\u91cd\u590d\u7684 if-else \u8bed\u53e5\uff1f\u300b\u5e26\u5927\u5bb6\u6765\u4e86\u89e3\u4e00\u4e0b##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01 java\u4e2d\u9012\u8fdb\u5f0f\u5224\u65ad\u7684\u4f18\u5316\u65b9\u6848 \u5728java\u4e2d\u8fdb\u884c\u9012\u8fdb\u5f0f\u5224\u65ad\u65f6\uff0c\u9700\u8981\u6839\u636e\u6bcf\u4e00\u5c42\u7684\u6761\u4ef6\u662f\u5426\u6ee1\u8db3\u6765\u6267\u884c\u4e0d\u540c\u7684\u4ee3\u7801\u903b\u8f91\u3002\u539f\u59cb\u4ee3\u7801\u4e2d\u4f7f\u7528\u5927\u91cf\u7684if-else\u8bed\u53e5\uff0c\u4ee3\u7801\u5197\u4f59\u4e14\u53ef\u8bfb\u6027\u5dee\u3002\u4e0b\u9762\u4ecb\u7ecd\u4e24\u79cd\u4f18\u5316\u65b9\u6848\uff1a \u65b9\u6848\u4e00\uff1a\u4f7f\u7528switch-case \u6211\u4eec\u53ef\u4ee5\u5148\u6839\u636e\u4e0d\u540c\u7684\u60c5\u51b5\u7ec4\u5408\uff0c\u751f\u6210\u4e00\u4e2a\u5bf9\u5e94\u7684\u72b6\u6001\u7801\u3002\u7136\u540e\u901a\u8fc7switch-case\u8bed\u53e5\u6839\u636e\u72b6\u6001\u7801\u76f4\u63a5\u6267\u884c\u76f8\u5e94\u7684\u4ee3\u7801\u903b\u8f91\u3002\u8be5\u65b9\u6848\u53ef\u4ee5\u51cf\u5c11if-else\u8bed\u53e5\u7684\u5c42\u7ea7\uff0c\u4f7f\u5f97\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u3002 private static final int code_condition_one = 0000; private static final int code_condition_two = 0001; private static final int code_condition_three = 0011; private static final int code_condition_four = 0111; private static final int code_condition_five = 1111; private static void test(string a,string b,string c,string d){ […]<\/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-48487","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/48487","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=48487"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/48487\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=48487"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=48487"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=48487"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}