{"id":881,"date":"2022-04-05T20:07:15","date_gmt":"2022-04-06T04:07:15","guid":{"rendered":"https:\/\/ligai.cn\/blog\/?p=881"},"modified":"2022-05-25T22:59:14","modified_gmt":"2022-05-26T06:59:14","slug":"%e9%a2%86%e5%9f%9f%e9%a9%b1%e5%8a%a8%e8%ae%be%e8%ae%a1%e5%85%a5%e9%97%a8%e4%b8%8e%e5%ae%9e%e8%b7%b5-%e4%b8%8b","status":"publish","type":"post","link":"https:\/\/ligai.cn\/blog\/team\/881.html","title":{"rendered":"\u9886\u57df\u9a71\u52a8\u8bbe\u8ba1\u5165\u95e8\u4e0e\u5b9e\u8df5 [\u4e0b]"},"content":{"rendered":"\n<p>\u4e0a\u671f\u5bf9 DDD \u8fdb\u884c\u4e86\u7b80\u5355\u7684\u4ecb\u7ecd\uff0cPhone Number \u6848\u4f8b\u4e5f\u4f7f\u6211\u4eec\u5bf9 DDD \u6709\u4e86\u8fdb\u4e00\u6b65\u7684\u4e86\u89e3\u3002<\/p>\n\n\n\n<p>\u901a\u8fc7\u8be5\u6848\u4f8b\uff0c\u6211\u4eec\u4e86\u89e3\u5230 PhoneNumber \u5305\u542b\u4e86\u521d\u59cb\u5316\u3001\u6821\u9a8c\u3001\u5c5e\u6027\u5904\u7406\u7b49\u591a\u79cd\u903b\u8f91\uff0c\u800c\u4f20\u7edf\u7684 POJO \u7c7b\u53ea\u5305\u542b\u5176\u5c5e\u6027\u7684<code>getter setter<\/code>\u65b9\u6cd5\u3002\u8fd9\u662f DDD \u548c\u4f20\u7edf\u9762\u5411\u6570\u636e\u5f00\u53d1\u7684\u91cd\u8981\u5dee\u5f02\u70b9\u3002<\/p>\n\n\n\n<p>\u300cPhoneNumber-\u5145\u8840\u6a21\u578b\u300d\u4e0e\u300cPOJO \u7c7b-\u8d2b\u8840\u6a21\u578b\u300d\u4e0d\u96be\u7406\u89e3\uff0c\u7b14\u8005\u5728<a href=\"https:\/\/ligai.cn\/blog\/pmo\/870.html\"><span class=\"has-inline-color has-black-color\"><strong>\u300c\u9886\u57df\u9a71\u52a8\u8bbe\u8ba1\u5165\u95e8\u4e0e\u5b9e\u8df5-\u4e0a\u300d<\/strong><\/span><\/a>\u4e2d\u5df2\u5bf9\u5176\u505a\u8fc7\u4ecb\u7ecd\u3002\u96be\u7684\u662f\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\uff0c\u82e5\u4f7f\u7528\u5145\u8840\u6a21\u578b\uff0c\u5982\u4f55\u628a\u63e1\u597d\u5176\u5f3a\u5f31\u7a0b\u5ea6\u9700\u8981\u5f88\u4e30\u5bcc\u7684\u7ecf\u9a8c\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2><strong><span class=\"has-inline-color has-black-color\">DP\uff08Domain Primtive\uff09<\/span><\/strong><\/h2>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u6211\u4eec\u5c06<code>PhoneNumber<\/code>\u8fd9\u79cd\u7c7b\u578b\u79f0\u4e3a <strong>DP- Domain Primitive<\/strong>\u3002\u7c7b\u6bd4 Integer\u3001String \u5728 Java \u7f16\u7a0b\u8bed\u8a00\u4e2d\u4e00\u6837\uff0cDP \u662f DDD \u91cc\u4e00\u5207\u6a21\u578b\u3001\u65b9\u6cd5\u3001\u67b6\u6784\u7684\u57fa\u7840\u3002<\/p>\n\n\n\n<h5><strong><span class=\"has-inline-color has-black-color\">\u5b9a\u4e49 DP\uff1a<\/span><\/strong><\/h5>\n\n\n\n<p>\u5728 DDD \u91cc\uff0cDP \u53ef\u4ee5\u8bf4\u662f\u4e00\u5207\u6a21\u578b\u3001\u65b9\u6cd5\u3001\u67b6\u6784\u7684\u57fa\u7840\uff0c\u5b83\u662f\u5728\u7279\u5b9a\u9886\u57df\uff0c\u62e5\u6709\u7cbe\u51c6\u5b9a\u4e49\u3001\u53ef\u81ea\u6211\u9a8c\u8bc1\u3001\u62e5\u6709\u884c\u4e3a\u7684\u5bf9\u8c61\uff0c\u53ef\u8ba4\u4e3a\u662f\u9886\u57df\u7684\u6700\u5c0f\u7ec4\u6210\u90e8\u5206\u3002<\/p>\n\n\n\n<h5><strong><span class=\"has-inline-color has-black-color\">\u4f7f\u7528 DP \u7684\u4e09\u6761\u539f\u5219\uff1a<\/span><\/strong><\/h5>\n\n\n\n<ul><li><span style=\"color:#4c95ff\" class=\"has-inline-color\">\u5c06\u9690\u6027\u6982\u5ff5\u663e\u6027\u5316\/Make Implicit Concepts Expecit<\/span><\/li><\/ul>\n\n\n\n<p>\u5728<code>Phone Number<\/code>\u8fd9\u4e2a\u6848\u4f8b\u4e2d\uff0c\u82e5\u4f7f\u7528 String \u7c7b\u578b\u6765\u5b9a\u4e49\u7535\u8bdd\u53f7\u7801\uff0c\u5219\u300c\u5f52\u5c5e\u5730\u7f16\u53f7\u300d\u3001\u300c\u8fd0\u8425\u5546\u7f16\u53f7\u300d\u8fd9\u4e9b\u5c5e\u4e8e\u7535\u8bdd\u53f7\u7801\u7684\u9690\u6027\u5c5e\u6027\u5c31\u96be\u4ee5\u4f53\u73b0\u51fa\u6765\uff0c\u6211\u4eec\u901a\u8fc7\u81ea\u5b9a\u4e49\u7c7b\u578b<code>PhoneNumber<\/code>\uff0c\u901a\u8fc7\u8d4b\u4e88\u5b83\u884c\u4e3a\u6765\u663e\u6027\u5316\u4e86\u8fd9\u4e24\u4e2a\u6982\u5ff5\uff0c\u8ba9\u4ee3\u7801\u7684\u4e1a\u52a1\u8bed\u4e49\u66f4\u52a0\u660e\u786e\u3002<\/p>\n\n\n\n<ul><li><span style=\"color:#4c95ff\" class=\"has-inline-color\">\u5c06\u9690\u6027\u4e0a\u4e0b\u6587\u663e\u6027\u5316\/Make Implicit Context Expecit<\/span><\/li><\/ul>\n\n\n\n<p>\u8fd9\u91cc\u6211\u4eec\u901a\u8fc7\u4e00\u4e2a\u4f8b\u5b50\u6765\u8bf4\u660e\uff1a<\/p>\n\n\n\n<p>\u5047\u8bbe\u73b0\u5728\u8981\u5b9e\u73b0\u4e00\u4e2a\u529f\u80fd: \u4f7f A \u7528\u6237\u53ef\u4ee5\u652f\u4ed8 x \u5143\u7ed9\u7528\u6237 B\uff0c\u53ef\u80fd\u7684\u5b9e\u73b0\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public void pay(BigDecimal money, Long recipientId) {     \n    bankService.transfer(money, \"CNY\", recipientId); \n}<\/code><\/pre>\n\n\n\n<p>\u5982\u679c\u8fd9\u4e2a\u662f\u5883\u5185\u8f6c\u8d26\uff0c\u5e76\u4e14\u5883\u5185\u7684\u8d27\u5e01\u6c38\u8fdc\u4e0d\u53d8\uff0c\u8be5\u65b9\u6cd5\u4f3c\u4e4e\u6ca1\u5565\u95ee\u9898\u3002\u4e00\u65e6\u8d27\u5e01\u53d8\u66f4\u6216\u505a\u8de8\u5883\u8f6c\u8d26\uff0c\u8be5\u65b9\u6cd5\u7559\u6709\u660e\u663e\u7684 bug\uff0c\u56e0\u4e3a <strong><span style=\"color:#4c95ff\" class=\"has-inline-color\"><code>Money<\/code>&nbsp;\u5bf9\u5e94\u7684\u4e0d\u4e00\u5b9a\u662f <code>CNY<\/code>\u3002<\/span><\/strong><\/p>\n\n\n\n<p>\u5728\u8fd9\u4e2a case \u91cc\uff0c\u5f53\u6211\u4eec\u8bf4\u201c\u652f\u4ed8 x \u5143\u201d\u65f6\uff0c\u9664\u4e86 x \u672c\u8eab\u7684\u6570\u5b57\u5916\uff0c\u8fd8\u6709\u4e00\u4e2a\u9690\u542b\u7684\u6982\u5ff5\u300c\u5143\u300d\u3002<\/p>\n\n\n\n<p>\u5728\u539f\u59cb\u7684\u5165\u53c2\u4e2d\uff0c\u53ea\u7528<code>BigDecimal<\/code>\u7684\u539f\u56e0\u662f\u6211\u4eec\u9ed8\u8ba4<code>CNY<\/code>\u8d27\u5e01\u662f\u4e0d\u53d8\u7684\uff0c\u662f\u4e00\u4e2a\u9690\u542b\u7684\u4e0a\u4e0b\u6587\u6761\u4ef6\u3002\u4f46\u5f53\u6211\u4eec\u5199\u4ee3\u7801\u65f6\uff0c\u8981<strong>\u628a\u6240\u6709\u9690\u6027\u7684\u6761\u4ef6\u663e\u6027\u5316\uff0c\u7136\u540e\u6574\u4f53\u7ec4\u6210\u5f53\u524d\u7684\u4e0a\u4e0b\u6587<\/strong>\uff1a\u505a\u300c\u652f\u4ed8\u300d\u65f6\uff0c\u6211\u4eec\u5c06\u300c\u652f\u4ed8\u91d1\u989d\u300d&amp;\u300c\u8d27\u5e01\u79cd\u7c7b\u300d\u4f5c\u4e3a\u4e00\u4e2a\u5165\u53c2\u8f93\u5165\u8fdb\u6765\uff0c\u4e24\u8005\u6574\u5408\u6210\u4e00\u4e2a\u5b8c\u6574\u800c\u72ec\u7acb\u7684\u6982\u5ff5\uff1a<code>Money<\/code>\u3002<\/p>\n\n\n\n<p>\u539f\u6709\u7684\u4ee3\u7801\u53d8\u4e3a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\npublic class Money {     \n    private final BigDecimal amount;     \n    private final Currency currency;       \n    public Money(BigDecimal amount, Currency currency) {         \n        this.amount = amount;         \n        this.currency = currency;     \n        } \n    }  \n\n    public void pay(Money money, Long recipientId) {     \n        bankService.transfer(money, recipientId); \n    }\n}<\/code><\/pre>\n\n\n\n<p>\u901a\u8fc7\u5c06\u9ed8\u8ba4\u8d27\u5e01\u8fd9\u4e2a\u9690\u6027\u7684\u4e0a\u4e0b\u6587\u6982\u5ff5\u663e\u6027\u5316\uff0c\u5e76\u4e14\u548c\u91d1\u989d\u5408\u5e76\u4e3a Money\uff0c\u6211\u4eec\u907f\u514d\u4e86\u5f88\u591a\u5f53\u524d\u770b\u4e0d\u51fa\u6765\u672a\u6765\u53ef\u80fd\u4f1a\u66b4\u96f7\u7684 bug\u3002<\/p>\n\n\n\n<ul><li><span style=\"color:#4c95ff\" class=\"has-inline-color\">\u5c01\u88c5\u591a\u5bf9\u8c61\u884c\u4e3a\/Encapsulate Multi-Object Behavior<\/span><\/li><\/ul>\n\n\n\n<p>\u5c06\u524d\u9762\u7684\u6848\u4f8b\u5347\u7ea7\u4e00\u4e0b\uff1a\u7528\u6237\u8981\u505a\u8de8\u5883\u8f6c\u8d26\uff0c\u4ece CNY \u5230 USD \u4e14\u6c47\u7387\u968f\u65f6\u5728\u6ce2\u52a8\u3002<\/p>\n\n\n\n<p>\u4ee3\u7801\u5757\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public void pay(Money money, Currency targetCurrency, Long recipientId) {\n    if (money.getCurrency().equals(targetCurrency)) {\n        bankService.transfer(money, recipientId);\n    } else {\n        BigDecimal rate = exchangeService.getRate(money.getCurrency(), targetCurrency);\n        BigDecimal targetAmount = money.getAmount().multiply(new BigDecimal(rate));\n        Money targetMoney = new Money(targetAmount, targetCurrency);\n        bankService.transfer(targetMoney, recipientId);\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e2a case \u91cc<\/p>\n\n\n\n<p>1\u3001targetCurrency \u4e0d\u7b49\u4e8e money Curreny<\/p>\n\n\n\n<p>2\u3001\u8c03\u7528\u4e00\u4e2a\u670d\u52a1\u53bb\u53d6\u6c47\u7387\uff0c\u7136\u540e\u505a\u8ba1\u7b97<\/p>\n\n\n\n<p>3\u3001\u7528\u8ba1\u7b97\u540e\u7684\u7ed3\u679c\u505a\u8f6c\u8d26<\/p>\n\n\n\n<p>\u6700\u5927\u7684\u95ee\u9898\u5728\u4e8e<strong>\u91d1\u989d\u7684\u8ba1\u7b97\u88ab\u5305\u542b\u5728\u652f\u4ed8\u7684\u670d\u52a1\u4e2d\uff0c\u6d89\u53ca\u591a\u4e2a\u5bf9\u8c61\uff1a<\/strong>2 \u4e2a Currency\uff0c2 \u4e2a Money\uff0c1 \u4e2a BigDecimal\u3002\u8fd9\u79cd\u6d89\u53ca\u5230\u591a\u4e2a\u5bf9\u8c61\u7684\u4e1a\u52a1\u903b\u8f91\uff0c\u6211\u4eec\u8981\u7528 DP \u5305\u88c5\u3002<\/p>\n\n\n\n<p>\u5e94\u7528 DP \u7684<strong>\u5c01\u88c5\u591a\u5bf9\u8c61\u884c\u4e3a<\/strong>\uff0c\u5c06\u8f6c\u6362\u6c47\u7387\u7684\u529f\u80fd\u5c01\u88c5\u5230\u4e00\u4e2a\u53eb\u505a ExchangeRate \u7684 DP \u91cc\uff1a<\/p>\n\n\n\n<p>ExchangeRate \u88ab\u5b9a\u4e49\u4e3a\u6c47\u7387\u5bf9\u8c61\uff0c\u901a\u8fc7<strong>\u5bf9\u91d1\u989d\u8ba1\u7b97\u903b\u8f91 &amp;\u5404\u79cd\u6821\u9a8c\u903b\u8f91\u5c01\u88c5<\/strong>\uff0c\u4f7f\u539f\u59cb\u4ee3\u7801\u53d8\u5f97\u7b80\u5355\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class ExchangeRate {\n    private final BigDecimal rate;\n    private final Currency from;\n    private final Currency to;\n    public ExchangeRate(BigDecimal rate, Currency from, Currency to) {\n        this.rate = rate;\n        this.from = from;\n        this.to = to;\n    }\n    public Money exchange(Money fromMoney) {\n        notNull(fromMoney);\n        isTrue(this.from.equals(fromMoney.getCurrency()));\n        BigDecimal targetAmount = fromMoney.getAmount().multiply(rate);\n        return new Money(targetAmount, to);\n    }\n}\npublic void pay(Money money, Currency targetCurrency, Long recipientId) {\n    ExchangeRate rate = exchangeService.getRate(money.getCurrency(), targetCurrency);\n    Money targetMoney = rate.exchange(money);\n    bankService.transfer(targetMoney, recipientId);<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<h2><strong><span class=\"has-inline-color has-black-color\">\u6848\u4f8b\u8bb2\u89e3<\/span><\/strong><\/h2>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<figure class=\"wp-block-image\"><img src=\"https:\/\/static001.geekbang.org\/infoq\/10\/10a6b946d9e9b6d2852e2e9ddf8223a9.png\" alt=\"\"\/><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>public class RegistrationServiceImpl implements RegistrationService {\n    private final SalesRepMapper salesRepDAO;\n    private final UserMapper userDAO;\n    private final RewardMapper rewardDAO;\n    private final TelecomRealnameService telecomService;\n    private final RiskControlService riskControlService;\n\n    public User register(String name, PhoneNumber phone) throws ValidationException {\n        TelecomInfoDTO rnInfoDTO = telecomService.getRealnameInfo(phone.getNumber());\n        if (!Objects.equals(name, rnInfoDTO.getName())) {\n            throw new InvalidRelnameException();\n        }\n        \/\/ \u8ba1\u7b97\u7528\u6237\u6807\u7b7e\n        String label = getLabel(rnInfoDTO);\n        \/\/ \u8ba1\u7b97\u9500\u552e\u7ec4\n        String salesRepId = getSalesRepId(phone);\n        \/\/ \u6784\u9020User\u5bf9\u8c61\u548cReward\u5bf9\u8c61\n        String idCard = rnInfoDTO.getIdCard();\n        UserDO userDO = new UserDO(idCard, name, phone.getNumber(), label, salesRepId);\n        RewardDO rewardDO = new RewardDO(idCard, label);\n\n        \/\/ \u98ce\u63a7\u903b\u8f91\n        if (!riskControlService.check(idCard, label)) {\n            userDO.setNew(true);\n            rewardDO.setAvailable(false);\n        } else {\n            userDO.setNew(false);\n            rewardDO.setAvailable(true);\n        }\n        \/\/ \u6301\u4e45\u5316\u6570\u636e\n        rewardDAO.insert(rewardDO);\n        return userDAO.insert(userDO);\n    }\n\n    private String getLabel(TelecomInfoDTO telecomInfoDTO) {\n        \/\/ TODO\n    }\n\n    private String getSalesRepId(PhoneNumber phone) {\n        SalesRepDO repDO = salesRepDAO.select(phone.getAreaCode(), phone.getOperatorCode());\n        if (repDO != null) {\n            return repDO.getRepId();\n        }\n        return null;\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u5e38\u89c4\u903b\u8f91\u548c\u5b9e\u73b0\u4ee3\u7801\u3002\u6211\u4eec\u5148\u6765\u7ed9\u5b83\u6311\u6311\u523a\uff0c\u518d\u5229\u7528\u9886\u57df\u9a71\u52a8\u8bbe\u8ba1\u7684\u601d\u60f3\u6765\u91cd\u6784\u3002\u53d1\u73b0<\/p>\n\n\n\n<h5><strong>\u95ee\u9898 1&gt;&gt;<\/strong> <strong><span style=\"color:#4c95ff\" class=\"has-inline-color\">\u5bf9\u5916\u90e8\u4f9d\u8d56\u7684\u8026\u5408\u975e\u5e38\u4e25\u91cd<\/span><\/strong><\/h5>\n\n\n\n<p>\u4e00\u5207\u4e0d\u5c5e\u4e8e\u5f53\u524d\u57df\u5185\u7684\u8bbe\u65bd\u548c\u670d\u52a1\uff0c\u90fd\u53ef\u8ba4\u4e3a\u662f\u5916\u90e8\u4f9d\u8d56\u3002\u6bd4\u5982\uff1a\u6570\u636e\u5e93\uff0c\u6570\u636e\u5e93 Schema\uff0cRPC \u670d\u52a1\uff0cORM \u6846\u67b6\uff0c\u4e2d\u95f4\u4ef6&#8230;..\u5e76\u4e14\u90fd\u662f\u53ef\u66ff\u6362\u7684\u3002\u6211\u4eec\u8981\u505a\u7684\u662f\u628a<strong><span style=\"color:#4c95ff\" class=\"has-inline-color\">\u7531\u5916\u90e8\u4f9d\u8d56\u53d8\u5316\u5bfc\u81f4\u7684\u81ea\u5df1\u7cfb\u7edf\u5185\u53d1\u751f\u7684\u53d8\u52a8\u63a7\u5236\u5728\u6700\u5c0f\u8303\u56f4\u3002<\/span><\/strong><\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>&#8220;\u7531\u5916\u90e8\u4f9d\u8d56\u53d8\u5316\u5bfc\u81f4\u7684\u5185\u90e8\u7cfb\u7edf\u7684\u6539\u9020\u7a0b\u5ea6\uff0c\u6211\u4eec\u53ef\u4ee5\u7406\u89e3\u4e3a\u4e00\u4e2a\u7cfb\u7edf\u7684\u53ef\u7ef4\u62a4\u6027\u3002\u201d<\/p><\/blockquote>\n\n\n\n<p>\u5728\u68c0\u67e5\u8fd9\u6bb5\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u524d\uff0c\u6211\u4eec\u5148\u6765\u770b\u770b\u5b83\u6709\u54ea\u4e9b\u5916\u90e8\u4f9d\u8d56\uff1a<\/p>\n\n\n\n<p><strong>1-1\u3001\u6570\u636e\u5e93 Schema<\/strong><\/p>\n\n\n\n<p>\u8fd9\u91cc\u7684\u4e1a\u52a1\u4ee3\u7801\u5f3a\u4f9d\u8d56\u6570\u636e\u5e93 schema\uff0c\u4e5f\u5c31\u662f DO \u7c7b\u3002\u4e00\u65e6\u6570\u636e\u8868\u7684\u5b57\u6bb5\u4ea7\u751f\u53d8\u52a8\uff0cDO \u7c7b\u5c31\u4f1a\u968f\u4e4b\u53d8\u52a8\u3002<\/p>\n\n\n\n<p>\u4f46 DO \u5728\u8fd9\u6bb5\u4ee3\u7801\u91cc\u5230\u5904\u90fd\u662f\uff0c\u5e76\u4e14\u5c06 UserDO \u8fd9\u4e2a\u5bf9\u8c61\u4f20\u9012\u5230\u4e86\u65b9\u6cd5\u5916\u90e8\u3002\u4e00\u65e6\u4e1a\u52a1\u903b\u8f91\u590d\u6742\u8d77\u6765\u3001DO \u53d1\u751f\u53d8\u5316\uff0c\u8fd9\u6bb5\u4ee3\u7801\u5c31\u4f1a\u9762\u76ee\u5168\u975e\uff0c\u751a\u81f3\u5f88\u53ef\u80fd\u4f1a\u7834\u574f\u6389\u539f\u6709\u6b63\u5e38\u7684\u529f\u80fd\u3002<\/p>\n\n\n\n<p><strong>1-2\u3001ORM \u6846\u67b6<\/strong><\/p>\n\n\n\n<p>\u6b64\u4ee3\u7801\u4f7f\u7528\u4e86\u5927\u5bb6\u719f\u6089\u7684 MyBatis \u6846\u67b6\uff1a\u4f7f\u7528 Mapper \u8fd9\u79cd DAO \u5bf9\u8c61\u6765\u6784\u5efa\u548c\u6267\u884c SQL\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u6846\u67b6\u672c\u8eab\u6ca1\u6709\u5411\u4e0b\u517c\u5bb9\u3001API \u4ea7\u751f\u4e86\u53d8\u5316\uff0c\u7cfb\u7edf\u8981\u5347\u7ea7\u6846\u67b6\uff1b\u6216\u51fa\u4e8e\u5bf9\u5b89\u5168\u95ee\u9898\u7684\u8003\u8651\uff0c\u7cfb\u7edf\u8981\u66ff\u6362\u6574\u4e2a ORM \u6846\u67b6\uff0c\u4e1a\u52a1\u4ee3\u7801\u8981\u8fdb\u884c\u5927\u91cf\u7684\u53d8\u52a8\u3002\u8fd9\u662f\u4e0d\u5408\u7406\u4e14\u5b58\u5728\u98ce\u9669\u7684\u3002<\/p>\n\n\n\n<p><strong>1-3\u3001RPC \u670d\u52a1<\/strong><\/p>\n\n\n\n<p>\u4f7f\u7528\u4e2d\u56fd\u7535\u4fe1\u63d0\u4f9b\u7684\u624b\u673a\u53f7\u5b9e\u540d\u4fe1\u606f\u67e5\u8be2\u670d\u52a1\uff0c\u5f3a\u4f9d\u8d56\u5728\u4e1a\u52a1\u903b\u8f91\u4e2d\u3002\u4e00\u65e6\u4e2d\u56fd\u7535\u4fe1\u63d0\u4f9b\u7684\u63a5\u53e3\u5165\u53c2\u548c\u8fd4\u56de\u90fd\u4ea7\u751f\u53d8\u52a8\uff0c\u6216\u8005\u53d8\u66f4\u670d\u52a1\u5546\uff0c\u90a3\u4e48\u4e1a\u52a1\u903b\u8f91\u4ee3\u7801\u4e5f\u8981\u8fdb\u884c\u76f8\u5e94\u7684\u4fee\u6539\u3002\u8bf4\u8d77\u6765\u7b80\u5355\u505a\u8d77\u6765\u96be\uff0c\u5efa\u8bae\u62b1\u6709\u6b64\u60f3\u6cd5\u7684\u7ae5\u978b\u8d81\u65e9\u653e\u5f03\uff0c\u4e0d\u8981\u7ed9\u81ea\u5df1\u627e\u9505\u80cc\u3002<\/p>\n\n\n\n<p>\u5206\u6790\u4e86\u4ee5\u4e0a\u4e09\u79cd\u4f9d\u8d56\uff0c\u5927\u5bb6\u5df2\u7ecf\u4e86\u89e3\u4e86\u4ee3\u7801\u8026\u5408\u5ea6\u9ad8\u7684\u539f\u56e0\u3002<strong>\u5982\u4f55\u6539\u9020\uff1f<\/strong><\/p>\n\n\n\n<p>\u601d\u8def\uff1a\u5c06\u5176\u6539\u9020\u6210\u9762\u5411\u62bd\u8c61\u63a5\u53e3\u7684\u7f16\u7a0b\u3002\u8fd9\u6837\uff0cDDD \u5c06\u4f1a\u4f5c\u4e3a\u4e00\u79cd\u6307\u5bfc\u601d\u60f3\u8f85\u52a9\u6211\u4eec\u8bbe\u8ba1\u3002<\/p>\n\n\n\n<p><strong>&gt;&gt;&nbsp;\u9488\u5bf9\u6570\u636e\u8bbf\u95ee\u62bd\u8c61<\/strong><\/p>\n\n\n\n<p>\u6709\u4e24\u4e2a\u5173\u952e\u70b9\uff1a<\/p>\n\n\n\n<p>1\u3001DO \u662f\u5177\u4f53\u5b9e\u73b0\uff0c\u4e0d\u5e94\u76f4\u63a5\u66b4\u9732\u7ed9\u4e1a\u52a1\u903b\u8f91<\/p>\n\n\n\n<p>2\u3001DAO \u4f5c\u4e3a\u8bbf\u95ee\u6570\u636e\u5e93\u7684\u5177\u4f53\u5b9e\u73b0<\/p>\n\n\n\n<p>\u5f15\u5165\u9886\u57df\u9a71\u52a8\u8bbe\u8ba1\u4e2d\u7684 Entity \u548c Repository\u3002<\/p>\n\n\n\n<p>\u4e0a\u5c42\u7684\u4e1a\u52a1\u903b\u8f91\u4e0d\u9700\u8981\u5173\u5fc3\u4e0b\u5c42\u7684\u5177\u4f53\u5b9e\u73b0\u3002<\/p>\n\n\n\n<p>\u8fd9\u91cc\u5b9a\u4e49\u4e86\u4e00\u4e2a User \u7c7b\u2014Entity\uff0c\u4e00\u79cd\u9886\u57df\u5b9e\u4f53\u7c7b\u3002User \u7c7b\u4e2d\u7684\u5c5e\u6027\u7528\u4e8e\u63cf\u8ff0\u8fd9\u4e2a\u7cfb\u7edf\u5185\u5ba2\u6237\u5e94\u8be5\u542b\u6709\u7684\u4fe1\u606f\uff0c\u5e94\u5c3d\u91cf\u591a\u7684\u4f7f\u7528 DP \u6765\u5c06\u66f4\u591a\u7684\u81ea\u68c0\u548c\u9690\u6027\u5c5e\u6027\u5185\u805a\u8d77\u6765\u3002<\/p>\n\n\n\n<p>\u53c2\u7167\u8fd9\u53e5\u8bdd<strong><span class=\"has-inline-color has-black-color\">\u300c\u4e0a\u5c42\u7684\u4e1a\u52a1\u903b\u8f91\u4e0d\u9700\u8981\u5173\u5fc3\u4e0b\u5c42\u7684\u5177\u4f53\u5b9e\u73b0\u300d<\/span><\/strong>\uff0c\u5728\u5b9a\u4e49 User \u7c7b\u7684\u65f6\u5019\uff0c\u6211\u4eec\u4e0d\u5173\u5fc3\u4e0b\u5c42\u6570\u636e\u5e93\u7684\u5177\u4f53\u5b9e\u73b0\u3001User \u5bf9\u8c61\u7684\u5b58\u50a8\u5728\u54ea\u91cc\uff0c\u6211\u4eec\u53ea\u9700\u8981\u5173\u6ce8\u5982\u4f55\u53bb\u63cf\u8ff0\u8fd9\u4e2a\u9886\u57df\u5b9e\u4f53\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>\u201c\u6709\u4eba\u53ef\u80fd\u4f1a\u5bf9 Entity \u548c DP \u7684\u5dee\u522b\u4ea7\u751f\u7591\u60d1\uff0c\u5b83\u4eec\u6700\u672c\u8d28\u7684\u5dee\u5f02\u5c31\u662f\u4e3b\u8bed\u4e49\u4e0a\u80fd\u5426\u62e5\u6709\u6570\u636e\u72b6\u6001\u3002\u201d<\/p><\/blockquote>\n\n\n\n<p>Repository \u5c31\u662f\u6570\u636e\u8bbf\u95ee\u7684\u62bd\u8c61\u5c42\u3002\u5728\u62bd\u8c61\u5c42\u4e2d\uff0c\u6211\u4eec\u53ea\u5b9a\u4e49\u52a8\u4f5c\u3002<\/p>\n\n\n\n<p>\u6bd4\u5982\u8fd9\u91cc\u7684 UserRepository\uff0c\u53ea\u5b9a\u4e49\u4e86 find \u548c save \u8fd9\u4e24\u4e2a\u52a8\u4f5c\uff0c\u8fd9\u6837\u5728\u5b9e\u73b0\u7c7b\u4e2d\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u4f9d\u8d56\u6570\u636e\u5e93\u8bbf\u95ee\u76f8\u5173\u7684\u5177\u4f53\u5b9e\u73b0\uff0c\u7136\u540e\uff0c\u76f4\u63a5\u4f9d\u8d56 MyBatis \u6846\u67b6\uff0c\u6bd4\u8f83 Redis Client \u7b49\u5404\u79cd\u6570\u636e\u5e93\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p>\u901a\u8fc7\u5bf9\u6570\u636e\u8bbf\u95ee\u5c42\u7684\u6539\u9020\uff0c\u6211\u4eec\u518d\u6765\u770b\u4e1a\u52a1\u4ee3\u7801\uff0c\u6539\u9020\u524d\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ User Entity\npublic class User extends Entity {\n    private UserId userId;\n    private PhoneNumber phone;\n    private Label label;\n    private SalesRepId salesRepId;\n    private SalesRepRepository salesRepRepository;\n\n    public User(RealnameInfo info, String name, PhoneNumber phone) {\n        \/\/ \u53c2\u6570\u4e00\u81f4\u6027\u6821\u9a8c\uff0c\u82e5\u6821\u9a8c\u5931\u8d25\uff0c\u5219check\u5185\u629b\u51fa\u5f02\u5e38\uff08DP\u7684\u4f18\u70b9\uff09\n        info.check(name);\n        initId(info);\n        labelledAs(info);\n        this.salesRepId = salesRepRepository.ofPhone(phone).getRepId();\n    }\n\n    \/\/ \u5bf9this.userId\u8d4b\u503c\n    private void initId(RealnameInfo info) {\n\n}\n\n    \/\/ \u5bf9this.label\u8d4b\u503c\n    private void labelledAs(RealnameInfo info) {\n        \/\/ \u672c\u5730\u5904\u7406\u903b\u8f91\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u6539\u9020\u540e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public interface UserRepository {\n    User ofId(UserId id);\n    User ofPhone(PhoneNumber phone);\n    User save(User user);\n}\npublic class UserRepositoryImpl implements UserRepository {\n    private final UserMapper userMapper;\n    private final UserConverter userConverter;@Override public User ofId(UserId id) {\n        UserDO userDO = userMapper.selectById(id.value());\n        return userConverter.fromDO(userDO);\n    }\n    @Override \n    public User ofPhone(PhoneNumber phone) {\n        UserDO userDO = userMapper.selectByPhone(phone.getNumber());\n        return userConverter.fromDO(userDO);\n    }\n    @Override \n    public User save(User user) {\n        UserDO userDO = userConverter.toDO(user);\n        if (userDO.getId() == null) {\n            userMapper.insert(userDO);\n        } else {\n            userMapper.update(userDO);\n        }\n        return userConverter.fromDO(userDO);\n    }\n}<\/code><\/pre>\n\n\n\n<p><strong>&gt;&gt;&nbsp;RPC \u8c03\u7528\u62bd\u8c61<\/strong><\/p>\n\n\n\n<p>\u8fd9\u91cc\u4e3b\u8981\u6709\u4e24\u5757\u6539\u52a8\uff1a<\/p>\n\n\n\n<p>1\u3001\u4f7f\u7528 RealnameService \u63a5\u53e3\u7c7b\u66ff\u4ee3 TelecomRealnameService \u5177\u4f53\u5b9e\u73b0\u7c7b\u2014 <strong>\u4f9d\u8d56\u5012\u7f6e<\/strong><\/p>\n\n\n\n<p>2\u3001<strong>DP \u5177\u4f53\u903b\u8f91\u5185\u805a<\/strong>\uff1a\u4f7f\u7528 RealnameInfo \u8fd9\u4e2a DP \u6765\u4ee3\u66ff TelecomInfoDTO \u8fd9\u4e2a\u5177\u4f53\u5b9e\u73b0\u3002\u8fd9\u6837\u65e0\u8bba\u5916\u90e8\u670d\u52a1\u662f\u53c2\u6570\u53d8\u5316\u8fd8\u662f\u66ff\u6362\u5b9e\u73b0\uff0c\u6211\u4eec\u90fd\u5c06\u53d8\u52a8\u8303\u56f4\u63a7\u5236\u5728\u4e86\u5177\u4f53\u5b9e\u73b0\u7c7b\u548c\u914d\u7f6e\u6587\u4ef6\u5185\u90e8\uff0c\u4fdd\u8bc1\u4e86\u6838\u5fc3\u4e1a\u52a1\u903b\u8f91\u7684\u7a33\u5b9a\u3002<\/p>\n\n\n\n<p>\u8fd9\u91cc\u8fd8\u8981\u5f15\u5165\u4e00\u4e2a\u6982\u5ff5\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>\u201c\u9632\u8150\u5c42\uff08Anticruption Layer\uff09\uff1a\u9632\u6b62\u5916\u90e8\u7cfb\u7edf\u7684\u8150\u70c2\u5f71\u54cd\u5230\u6211\u4eec\u81ea\u5df1\u7684\u7cfb\u7edf\u3002\u8fd9\u91cc\u7684 RealnameService \u5c31\u662f\u6211\u4eec\u7684\u9632\u8150\u5c42\u3002\u201d<\/p><\/blockquote>\n\n\n\n<p>\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class RegistrationServiceImpl implements RegistrationService {\n    private final SalesRepMapper salesRepDAO;\n    private final UserMapper userDAO;\n    private final RewardMapper rewardDAO;\n    private final RealnameService realnameService;\n    private final RiskControlService riskControlService;\n\n    public User register(String name, PhoneNumber phone) throws ValidationException {\n        RealnameInfo realnameInfo = realnameService.get(phone);\n        realnameInfo.check(name);\n\n        \/\/ \u8ba1\u7b97\u7528\u6237\u6807\u7b7e\n        String label = getLabel(rnInfoDTO);\n        \/\/ \u8ba1\u7b97\u9500\u552e\u7ec4\n        String salesRepId = getSalesRepId(phone);\n        \/\/ \u6784\u9020User\u5bf9\u8c61\u548cReward\u5bf9\u8c61\n        String idCard = realnameInfo.getIdCard();\n        UserDO userDO = new UserDO(idCard, name, phone.getNumber(), label, salesRepId);\n        RewardDO rewardDO = new RewardDO(idCard, label);\n\n        \/\/ \u98ce\u63a7\u903b\u8f91\n        if (!riskControlService.check(idCard, label)) {\n            userDO.setNew(true);\n            rewardDO.setAvailable(false);\n        } else {\n            userDO.setNew(false);\n            rewardDO.setAvailable(true);\n        }\n        \/\/ \u6301\u4e45\u5316\u6570\u636e\n        rewardDAO.insert(rewardDO);\n        return userDAO.insert(userDO);\n    }\n}<\/code><\/pre>\n\n\n\n<h5><strong>\u95ee\u9898 2 &gt;&gt;<\/strong> <strong><span style=\"color:#4c95ff\" class=\"has-inline-color\">\u903b\u8f91\u6df7\u4e71<\/span><\/strong><\/h5>\n\n\n\n<pre class=\"wp-block-code\"><code>\npublic class RegistrationServiceImpl implements RegistrationService {\n    private final UserRepository userRepository;\n    private final RewardRepository rewardRepository;\n    private final RealnameService realnameService;\n    private final RiskControlService riskControlService;\n\n    public User register(String name, PhoneNumber phone) {\n        \/\/ \u67e5\u8be2\u5b9e\u540d\u4fe1\u606f\n        RealnameInfo realnameInfo = realnameService.get(phone);\n\n        \/\/ \u6784\u5efa\u5bf9\u8c61\n        User user = new User(realnameInfo, phone);\n        Reward reward = new Reward(user);\n\n        \/\/ \u68c0\u67e5\u98ce\u63a7\n        if (!riskControlService.check(user)) {\n            user.fresh();\n            reward.inavailable();\n        }\n        \/\/ \u6301\u4e45\u5316\n        rewardRepository.save(reward);\n        return userRepository.save(user);\n    }\n}<\/code><\/pre>\n\n\n\n<p>Register \u65b9\u6cd5\u7684\u8bed\u4e49\uff0c\u53ea\u662f\u6ce8\u518c\u3002\u5728\u6700\u521d\u7684\u4ee3\u7801\u4e2d\uff0c Register \u65b9\u6cd5\u4e2d\u5df2\u7ecf\u8026\u5408\u4e86\u8bb8\u591a\u4e0d\u5c5e\u4e8e\u300c\u6ce8\u518c\u300d\u8fd9\u4e2a\u4e1a\u52a1\u57df\u9700\u8981\u5173\u5fc3\u7684\u903b\u8f91\uff0c\u8fd9\u4e3a\u540e\u8fb9\u7684\u4e1a\u52a1\u4fee\u6539\u65e0\u5f62\u4e2d\u589e\u6dfb\u4e86\u4e0d\u5c11\u5de5\u4f5c\u91cf\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>\u201c\u7531\u5185\u90e8\u4e1a\u52a1\u903b\u8f91\u53d8\u5316\u6240\u5bfc\u81f4\u7684\u5185\u90e8\u7cfb\u7edf\u7684\u6539\u9020\u7a0b\u5ea6\uff0c\u6211\u4eec\u53ef\u4ee5\u72ed\u4e49\u7684\u7406\u89e3\u4e3a\u7cfb\u7edf\u7684\u53ef\u6269\u5c55\u6027\u201d<\/p><\/blockquote>\n\n\n\n<p>\u56de\u5230\u8fd9\u4e2a\u4f8b\u5b50\uff0c\u6ce8\u518c\u7684\u5916\u90e8\u903b\u8f91\u5df2\u7ecf\u8fdb\u884c\u4e86\u4e00\u5b9a\u7a0b\u5ea6\u7684\u89e3\u8026\uff0c\u4f46\u5b83\u4f9d\u7136\u4e0d\u7eaf\u7cb9\uff1a\u300c\u5956\u54c1\u5bf9\u8c61\u300d\u548c\u300c\u98ce\u63a7\u68c0\u67e5\u300d\u4e3a\u4ec0\u4e48\u4f1a\u8026\u5408\u5728\u6ce8\u518c\u903b\u8f91\u4e2d\u5462\uff1f\u5982\u679c\uff0c\u4e4b\u540e\u7684\u53d1\u5956\u903b\u8f91\u4ea7\u751f\u53d8\u52a8\uff0c\u6ce8\u518c\u65b9\u6cd5\u8fd8\u8981\u4fee\u6539\u5417\uff1f&#8230;&#8230;<\/p>\n\n\n\n<p>\u6211\u4eec\u7ee7\u7eed\u601d\u8003\uff1a<\/p>\n\n\n\n<ul><li>\u53d1\u5956\u662f\u4e3a\u4e86\u7ed9\u4e88\u65b0\u7528\u6237\u4e00\u4e9b\u798f\u5229\uff0c\u672c\u8d28\u662f\u5224\u65ad\u5f53\u524d\u7528\u6237\u662f\u5426\u4e3a\u65b0\u7528\u6237<\/li><li>\u5728\u6ce8\u518c\u8fd9\u4e2a\u4e1a\u52a1\u57df\u4e2d\uff0c\u6211\u4eec\u5c06\u5b83\u7684\u884c\u4e3a\u62bd\u8c61\u4e3a\u300c\u83b7\u53d6\u7528\u6237\u4fe1\u606f\u300d\uff0c\u300c\u68c0\u67e5\u5e76\u66f4\u65b0\u7528\u6237\u300d\uff0c\u300c\u5b58\u50a8\u7528\u6237\u4fe1\u606f\u300d\uff0c\u8fd9\u4e09\u4e2a\u6b65\u9aa4\u4e0d\u65e0\u4e0d\u5408\u7406\u4e4b\u5904<\/li><li>\u5728\u300c\u68c0\u67e5\u5e76\u66f4\u65b0\u7528\u6237\u300d\u8fd9\u4e2a\u903b\u8f91\u4e2d\uff0c\u5b58\u5728\u53d1\u5956\u8fd9\u79cd\u884d\u751f\u884c\u4e3a\u4e0e\u5176\u4ed6\u53ef\u80fd\u7684\u884c\u4e3a<\/li><\/ul>\n\n\n\n<p>\u7406\u6e05\u903b\u8f91\u540e\uff0c\u6211\u4eec\u6765\u770b\u4e0b\u6700\u7ec8\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public interface CheckUserService {\n    void check(User user);\n}\n\npublic class CheckUserServiceImpl implements CheckUserService {\n    private final RiskControlService riskControlService;\n    private final RewardRepository rewardRepository;\n\n    @Override public void check(User user) {\n        rewardCheck(user);\n        \/\/ ...\n        \/\/ \u53ef\u80fd\u5b58\u5728\u7684\u5176\u4ed6\u903b\u8f91\n    }\n\n    private void rewardCheck(User user) {\n        Reward reward = new Reward(user);\n        \/\/ \u68c0\u67e5\u98ce\u63a7\n        if (!riskControlService.check(user)) {\n            user.fresh();\n            reward.inavailable();\n        }\n        rewardRepository.save(reward);\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u8fd9\u91cc\u9700\u8981\u6ce8\u610f\u4e00\u70b9\uff1aCheckUserService \u4e2d\u8fdb\u884c\u68c0\u67e5\u65f6\uff0c\u53ef\u80fd\u4f1a\u6539\u53d8 User \u5bf9\u8c61\u548c Reward \u5bf9\u8c61\u7684\u72b6\u6001\uff0c\u6d89\u53ca\u5230\u4e86\u591a\u4e2a Entity \u72b6\u6001\u6539\u53d8\u7684\u670d\u52a1\uff0c\u88ab\u79f0\u4e3a Domain Service\u3002Domain Service \u4e3b\u8981\u7528\u4e8e\u5c01\u88c5\u591a Entity \u6216\u8de8\u4e1a\u52a1\u57df\u7684\u903b\u8f91\u3002<\/p>\n\n\n\n<p>\u6839\u636e\u6700\u7ec8\u7684\u4ee3\u7801\u5757\u663e\u793a\uff0c\u6838\u5fc3\u903b\u8f91\u5df2\u6e05\u6670\uff0c\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6269\u5c55\u6027\u4e5f\u5927\u5927\u589e\u5f3a&nbsp;<strong>\u221a<\/strong><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2><strong><span class=\"has-inline-color has-black-color\">\u6765\u8bf4\u4e0b\u5355\u5143\u6d4b\u8bd5<\/span><\/strong><\/h2>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u6539\u9020\u524d\u7684\u4ee3\u7801\uff0c\u591a\u4e2a\u4e1a\u52a1\u903b\u8f91\u8026\u5408\u5728\u4e00\u8d77\uff1b<\/p>\n\n\n\n<p>\u6539\u9020\u540e\u7684\u4ee3\u7801\uff0c\u901a\u8fc7\u5bf9\u4e1a\u52a1\u903b\u8f91\u7684\u89e3\u8026\uff0c\u6d4b\u8bd5\u7528\u4f8b\u53d8\u5f97\u66f4\u5bb9\u6613\u7ef4\u62a4\u3002<\/p>\n\n\n\n<p>\u968f\u65f6\u95f4\u63a8\u79fb\uff0c\u8fed\u4ee3\u589e\u591a\uff0c\u5355\u5143\u6d4b\u8bd5\u4f1a\u82b1\u8d39\u66f4\u5c11\u7684\u7cbe\u529b\uff0c\u83b7\u5f97\u66f4\u9ad8\u7684\u5355\u5143\u6d4b\u8bd5\u8986\u76d6\u7387\u3002\u8fd9\u5c31\u662f\u903b\u8f91\u5185\u805a &amp;\u89e3\u8026\u7ed9\u5355\u5143\u6d4b\u8bd5\u6240\u5e26\u6765\u7684\u597d\u5904\u3002<\/p>\n\n\n\n<p>\u4ee3\u7801\u6539\u9020\u524d\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img src=\"https:\/\/static001.geekbang.org\/infoq\/7c\/7cb0cbd1dd86d864c583d68e18fc53d3.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u4ee3\u7801\u6539\u9020\u540e\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img src=\"https:\/\/static001.geekbang.org\/infoq\/fa\/fa15a67b8f62e93ea1e9b87bc8883958.png\" alt=\"\"\/><\/figure>\n\n\n\n<h2><strong><span class=\"has-inline-color has-black-color\">\u5f52\u7eb3\u6982\u5ff5<\/span><span style=\"color:#4c95ff\" class=\"has-inline-color\">\u00a0<\/span><\/strong><\/h2>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><span style=\"color:#4c95ff\" class=\"has-inline-color\"><strong>&gt;&gt; DP<\/strong><\/span><\/p>\n\n\n\n<p>\uff1a<span style=\"color:#4c95ff\" class=\"has-inline-color\">\u62bd\u8c61\u5e76\u5c01\u88c5\u81ea\u68c0\u548c\u4e00\u4e9b\u9690\u6027\u5c5e\u6027\u7684\u8ba1\u7b97\u903b\u8f91\uff0c\u8fd9\u4e9b\u5c5e\u6027\u662f\u65e0\u72b6\u6001\u7684<\/span><\/p>\n\n\n\n<p><strong><span style=\"color:#4c95ff\" class=\"has-inline-color\">&gt;&gt; Entity<\/span><\/strong><\/p>\n\n\n\n<p>\uff1a<span style=\"color:#4c95ff\" class=\"has-inline-color\">\u62bd\u8c61\u5e76\u5c01\u88c5\u5355\u5bf9\u8c61\u6709\u72b6\u6001\u7684\u903b\u8f91<\/span><\/p>\n\n\n\n<p><strong><span style=\"color:#4c95ff\" class=\"has-inline-color\">&gt;&gt; Domain Service<\/span><\/strong><\/p>\n\n\n\n<p>\uff1a<span style=\"color:#4c95ff\" class=\"has-inline-color\">\u62bd\u8c61\u5e76\u5c01\u88c5\u591a\u5bf9\u8c61\u7684\u6709\u72b6\u6001\u903b\u8f91<\/span><\/p>\n\n\n\n<p><strong><span style=\"color:#4c95ff\" class=\"has-inline-color\">&gt;&gt; Repository<\/span><\/strong><\/p>\n\n\n\n<p>\uff1a<span style=\"color:#4c95ff\" class=\"has-inline-color\">\u62bd\u8c61\u5e76\u5c01\u88c5\u5916\u90e8\u6570\u636e\u8bbf\u95ee\u903b\u8f91<\/span><\/p>\n\n\n\n<p><span style=\"color:#4c95ff\" class=\"has-inline-color\"><strong>&gt;&gt;<\/strong> <strong>\u9886\u57df\u9a71\u52a8\u8bbe\u8ba1\u7684\u6307\u5bfc\u601d\u60f3\uff1a<\/strong><\/span><\/p>\n\n\n\n<ul><li>\u9996\u5148\u5bf9\u4e1a\u52a1\u95ee\u9898\u8fdb\u884c\u603b\u89c8<\/li><li>\u7136\u540e\u5bf9\u9886\u57df\u5bf9\u8c61-<strong><span style=\"color:#4c95ff\" class=\"has-inline-color\">Entity<\/span> <\/strong>\u8fdb\u884c\u5212\u5206\uff0c\u660e\u786e\u6bcf\u4e2a\u9886\u57df\u5bf9\u8c61\u5305\u542b\u7684\u4fe1\u606f\u548c\u804c<\/li><\/ul>\n\n\n\n<ul><li>\u8d23\u8fb9\u754c\uff0c\u8fdb\u884c\u8de8\u5bf9\u8c61\uff0c\u591a\u5bf9\u8c61\u7684\u903b\u8f91\u7ec4\u7ec7-<strong><span style=\"color:#4c95ff\" class=\"has-inline-color\">Domain Service<\/span><\/strong><\/li><li>\u63a5\u7740\u5728\u4e0a\u5c42\u5e94\u7528\u4e2d\u6839\u636e\u4e1a\u52a1\u63cf\u8ff0\u53bb\u7f16\u6392-<span style=\"color:#4c95ff\" class=\"has-inline-color\"><strong>Entity<\/strong> &amp; <strong>Domain Service<\/strong><\/span><\/li><li>\u6700\u540e\u505a\u4e00\u4e9b\u57fa\u7840\u8bbe\u65bd\u5de5\u4f5c\uff1a\u5bf9\u4e0b\u5c42\u7684\u6570\u636e\u8bbf\u95ee\uff0c<strong><span style=\"color:#4c95ff\" class=\"has-inline-color\">RPC<\/span><\/strong> \u8c03\u7528\u53bb\u505a\u4e00\u4e9b\u5177\u4f53\u5b9e\u73b0<\/li><\/ul>\n\n\n\n<p>\u503c\u5f97\u8bf4\u660e\u7684\u4e00\u70b9\u662f\uff1a\u5728\u5b9e\u8df5\u5de5\u4f5c\u8fc7\u7a0b\u4e2d\uff0cDDD \u53ea\u662f\u5bf9\u6211\u4eec\u8fdb\u884c\u4e00\u79cd\u6307\u5bfc\uff0c\u6211\u4eec\u4e0d\u5fc5\u6309\u90e8\u5c31\u73ed\uff0c\u5168\u76d8\u7167\u6284\u4e0a\u8ff0\u8fd9\u79cd\u8bbe\u8ba1\u89c4\u8303\uff0c\u4f46\u8981\u9075\u5faa<span style=\"color:#4c95ff\" class=\"has-inline-color\"><strong>\u300c\u9ad8\u5185\u805a\u4f4e\u8026\u5408\u300d\u7684\u601d\u60f3<\/strong>\uff0c<strong>\u5bf9\u8fb9\u754c\u7684\u5212\u5206\u4e0e\u63a7\u5236\u662f\u9886\u57df\u9a71\u52a8\u8bbe\u8ba1\u5f3a\u8c03\u7684\u6838\u5fc3\u601d\u60f3\u3002<\/strong><\/span><\/p>\n\n\n\n<h2><strong>\u67b6\u6784<\/strong><\/h2>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>DDD \u7684\u4e00\u5927\u597d\u5904\u662f\u5b83\u4e0d\u9700\u8981\u4f7f\u7528\u67d0\u4e9b\u7279\u5b9a\u7684\u67b6\u6784\u3002<\/p>\n\n\n\n<p>\u7531\u4e8e\u6838\u5fc3\u57df\u4f4d\u4e8e\u9650\u754c\u4e0a\u4e0b\u6587\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u6574\u4e2a\u7cfb\u7edf\u4e2d\u4f7f\u7528\u591a\u79cd\u98ce\u683c\u7684\u67b6\u6784\u3002\u6709\u4e9b\u67b6\u6784\u5305\u56f4\u7740\u9886\u57df\u6a21\u578b\uff0c\u80fd\u591f\u5168\u5c40\u6027\u5730\u5f71\u54cd\u7cfb\u7edf;\u6709\u4e9b\u67b6\u6784\u6ee1\u8db3\u4e86\u67d0\u4e9b\u7279\u5b9a\u7684\u9700\u6c42\u3002\u6211\u4eec\u7684\u76ee\u6807\u662f<strong><span style=\"color:#4c95ff\" class=\"has-inline-color\">\u9009\u62e9\u9002\u5408\u81ea\u5df1\u7684\u67b6\u6784\u548c\u67b6\u6784\u6a21\u5f0f\u3002<\/span><\/strong><\/p>\n\n\n\n<p>\u8fd9\u91cc\u6211\u4eec\u7b80\u5355\u7684\u4ecb\u7ecd\u4e24\u79cd\u5728 DDD \u843d\u5730\u8fc7\u7a0b\u4e2d\u6bd4\u8f83\u5b9e\u7528\u7684\u67b6\u6784\u98ce\u683c\uff1a<\/p>\n\n\n\n<p><strong>&gt;&gt; <span style=\"color:#4c95ff\" class=\"has-inline-color\">Clean Architecture<\/span><\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns\">\n<div class=\"wp-block-column\" style=\"flex-basis:100%\">\n<p class=\"has-text-align-center\"><img src=\"https:\/\/static001.geekbang.org\/infoq\/68\/68d7dfaa3593d58a7ef89dddd4294428.jpeg?x-oss-process=image\/resize,p_80\/auto-orient,1\"><\/p>\n<\/div>\n<\/div>\n\n\n\n<p>\u76ee\u6807\uff1a\u6846\u67b6\u65e0\u5173\u3001\u53ef\u6d4b\u8bd5\u3001UI \u65e0\u5173\u3001\u6570\u636e\u5e93\u65e0\u5173\u3001\u5916\u90e8\u4ee3\u7406\u65e0\u5173<\/p>\n\n\n\n<p><strong>&gt;&gt; <span style=\"color:#4c95ff\" class=\"has-inline-color\">COLA Architecture<\/span><\/strong><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" width=\"553\" height=\"306\" src=\"https:\/\/ligai.cn\/blog\/wp-content\/uploads\/2022\/04\/\u56fe\u72472.jpg\" alt=\"\" class=\"wp-image-882\" srcset=\"https:\/\/ligai.cn\/blog\/wp-content\/uploads\/2022\/04\/\u56fe\u72472.jpg 553w, https:\/\/ligai.cn\/blog\/wp-content\/uploads\/2022\/04\/\u56fe\u72472-300x166.jpg 300w\" sizes=\"(max-width: 553px) 100vw, 553px\" \/><\/figure><\/div>\n\n\n\n<p>COLA \u4ee3\u8868\u4e86\u7b80\u6d01\u7684\u4e1a\u52a1\u601d\u60f3\uff1a<\/p>\n\n\n\n<p>1\u3001COLA \u662f\u4e00\u79cd\u67b6\u6784\u601d\u60f3\uff0c\u662f\u6574\u5408\u4e86\u6d0b\u8471\u5708\u67b6\u6784\u3001\u9002\u914d\u5668\u67b6\u6784\u3001DDD\u3001\u6574\u6d01\u67b6\u6784\u3001TMF \u7b49\u67b6\u6784\u601d\u60f3\u7684\u4e00\u79cd\u5e94\u7528\u67b6\u6784\uff1b2\u3001 COLA \u4e5f\u662f\u6846\u67b6\u7ec4\u4ef6\u3002<\/p>\n\n\n\n<p>\u5e94\u7528\u67b6\u6784\u7684\u672c\u8d28\uff0c\u5c31\u662f\u8981\u4ece\u7e41\u6742\u7684\u4e1a\u52a1\u7cfb\u7edf\u4e2d\u63d0\u70bc\u51fa\u5171\u6027\uff0c\u627e\u5230\u89e3\u51b3\u4e1a\u52a1\u95ee\u9898\u7684\u6700\u4f73\u6a21\u5f0f\uff0c\u4e3a\u5f00\u53d1\u4eba\u5458\u63d0\u4f9b\u7edf\u4e00\u7684\u8ba4\u77e5\uff0c\u6cbb\u7406\u6df7\u4e71\u3002\u201c\u4ece\u6df7\u4e71\u5230\u6709\u5e8f\u201d=\u5b9a\u4e49\u826f\u597d\u7684\u5e94\u7528\u7ed3\u6784\uff0c\u63d0\u4f9b\u6700\u4f73\u5b9e\u8df5\u3002<\/p>\n\n\n\n<p><strong>\u9886\u57df\u9a71\u52a8\u8bbe\u8ba1\u5165\u95e8\u4e0e\u5b9e\u8df5\u300c\u4e0a &amp;\u4e0b\u300d\u81f3\u6b64\u5b8c\u7ed3\u3002\u5168\u6587\u4f5c\u8005\uff1anerd4me \uff0c\u4e00\u679a\u4f18\u79c0\u7684\u7a0b\u5e8f\u5458\u5c0f\u7f16~<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e0a\u671f\u5bf9 DDD \u8fdb\u884c\u4e86\u7b80\u5355\u7684\u4ecb\u7ecd\uff0cPhone Number 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