{"id":438323,"date":"2021-04-13T16:40:04","date_gmt":"2021-04-13T08:40:04","guid":{"rendered":"http:\/\/4563.org\/?p=438323"},"modified":"2021-04-13T16:40:04","modified_gmt":"2021-04-13T08:40:04","slug":"java-%e6%b3%9b%e5%9e%8b-%e6%8e%a5%e5%8f%a3%e8%bf%94%e5%9b%9e%e7%b1%bb-%e5%a6%82%e4%bd%95%e9%9d%a2%e5%af%b9-%e7%a9%ba%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=438323","title":{"rendered":"Java \u6cdb\u578b \u63a5\u53e3\u8fd4\u56de\u7c7b \u5982\u4f55\u9762\u5bf9 \u7a7a\uff1f"},"content":{"rendered":"
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Java \u6cdb\u578b \u63a5\u53e3\u8fd4\u56de\u7c7b \u5982\u4f55\u9762\u5bf9 \u7a7a\uff1f <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : RiceMarch <\/span> <\/i> 0<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

Java \u63a5\u53e3\u8fd4\u56de\u7c7b \u4e2d \u6cdb\u578b\u5982\u4f55\u9762\u5bf9 \u8fd4\u56de\u503c\u672c\u5e94\u4e3anull<\/code>\u7684\u60c5\u51b5\uff1f?<\/h1>\n

<\/p>\n

\u5728\u8bbe\u8ba1 web \u5e94\u7528\u4e2d\u7684\u8fd4\u56de\u57fa\u7840\u7c7b\u65f6\uff0c\u6211\u4f1a\u8fd9\u6837\u5199<\/p>\n

public class BaseResponse<T> implements Serializable {    private static final long serialVersionUID = 1L;      private int code;     private String message;     private T data;      \/\/... \u7701\u7565\u6784\u9020\u65b9\u6cd5\u7b49      public static BaseResponse success() {         return new BaseResponse();     }      public static BaseResponse success(String message) {         return new BaseResponse(RespCodeEnum.SUCCESS, message);     }          \/\/... \u7701\u7565\u5931\u8d25\u7b49 }  <\/code><\/pre>\n
\u5f53\u5728 controller \u4e2d \u4f7f\u7528\u8fd9\u4e9b\u57fa\u7840\u8fd4\u56de\u7c7b\u8fdb\u884c\u6570\u636e\u5305\u88c5\u65f6\uff0c\u901a\u8fc7\u6cdb\u578b\u8fdb\u884c\u8fd4\u56de\u5185\u5bb9\u7684\u6307\u5b9a<\/p>\n
\u4f46 \u4f8b\u5982\u4e00\u4e9b\u6dfb\u52a0\u64cd\u4f5c\u65f6\uff0c\u5c06\u4e0d\u4f1a\u6709\u5177\u4f53\u7684\u8fd4\u56de\u503c\uff0c\u53ea\u4f1a\u8fd4\u56de code \u6765\u5224\u65ad\u662f\u5426\u64cd\u4f5c\u6210\u529f<\/p>\n
@PostMapping(\"\/something\") public BaseResponse postSomething(@Valid @RequestBody Something request) {      \/\/\u6dfb\u52a0\u64cd\u4f5c      \/\/\u6839\u636e\u6dfb\u52a0\u64cd\u4f5c\u5224\u65ad\u8fd4\u56de\u5185\u5bb9     \/\/ if success     return new BaseResponse.success();      \/\/ if failed ... }   <\/code><\/pre>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u6211\u6ca1\u6709\u6307\u5b9a\u6cdb\u578b\u7c7b\u578b\uff0c\u56e0\u4e3a\u6709\u4e9b\u6dfb\u52a0\u64cd\u4f5c\u65f6\uff0c\u6ca1\u6709\u5177\u4f53\u7684\u8fd4\u56de\u503c\u5185\u5bb9\uff0c\u6211\u672c\u6765\u60f3\u5199\u6210 public BaseResponse<Void> postSomething<\/code>\uff0c\u4f46\u5728return<\/code>\u65f6\uff0c\u5374\u4e0d\u77e5\u9053\u8be5\u5982\u4f55\u5199\u3002<\/p>\n
\u60f3\u8bf7\u95ee\u4e00\u4e0b\uff0c\u6307\u5b9a\u6cdb\u578b\u7c7b\u578b \u7406\u8bba\u4e0a\u5e94\u8be5\u662f\u90fd\u8fdb\u884c\u7684\uff08\u5982\u679c\u8bf4\u9519\uff0c\u8bf7\u4e0d\u8981\u6253\u6211\uff0c\u4e2a\u4eba\u60f3\u6cd5 \/(\u3112o\u3112)\/~~\uff09\uff0c<\/p>\n
\u4f46\u5728\u8fd9\u91cc\u5982\u4f55\u8fdb\u884c\u6b63\u786e\u7684\u6cdb\u578b\u7c7b\u578b\u6307\u5b9a\u5462\uff08\u6216\u8005\u8bf4\u9700\u8981\u6307\u5b9a\u6cdb\u578b\u4e48\uff09\uff1f<\/p>\n
\uff08\u592a\u591a\u77e5\u8bc6\u4e0d\u61c2\uff0c\u5929\u5929\u6765\u95ee v \u53cb\uff0c\u5b66\u5230\u4e86\u5f88\u591a\uff0c\u611f\u8c22\u611f\u8c22<\/p>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (28<\/span>)        <\/div>\n
 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : yuanmomo <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6ca1\u8bb0\u9519\u7684\u8bdd\uff0c\u6211\u5e94\u8be5\u7528\u7684\u662f\u95ee\u53f7                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : xarthur <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4e0d\u8981\u7528 null \u4e0d\u5c31\u884c\u4e86\u2026\u2026
    \u7528 Optional \u3002
    \u6211\u4ee5\u4e3a null-safety \u5df2\u7ecf\u662f\u4e2a\u5e38\u8bc6\u4e86\uff08                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : xarthur <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u53e6\u5916\u5b8c\u5168\u6ca1\u770b\u61c2\u4f60\u7684\u4f8b\u5b50\uff08                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : RiceMarch <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @xarthur \u53ef\u80fd\u6211\u8868\u8fbe\u7684\u4e0d\u592a\u597d hhhh\uff0c\u5c31\u662f BaseResponse \u57fa\u7840\u8fd4\u56de\u7c7b\u4e2d\u7684 data \u5728\u4e00\u4e9b\u60c5\u51b5\u4e0b\u662f\u6ca1\u6709\u503c\u7684\uff0c\u53ea\u6709 code \u548c message \u6709\u503c\uff0c\u5728\u786e\u5b9a data \u662f\u6ca1\u6709\u503c\u7684\u60c5\u51b5\u4e0b\uff0c\u6211\u8fd8\u60f3\u8981\u5728\u5199 controller \u65b9\u6cd5\u7684\u65f6\u5019\u6307\u5b9a\u6cdb\u578b\u7c7b\u578b\uff0c\u8be5\u600e\u4e48\u6307\u5b9a\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : zhazi <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 Void                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : lwq84510 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4e00\u662f\u7b54\u6848                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : aguesuka <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4e0d\u8981\u4f7f\u7528\u95ee\u53f7\u4f5c\u4e3a\u6cdb\u578b<\/p>\n
    @PostMapping(“\/something”)
    public BaseResponse<Void> \/*\u6539\u4e86\u8fd9\u91cc*\/postSomething(@Valid @RequestBody Something request) {<\/p>\n
     \/\/\u6dfb\u52a0\u64cd\u4f5c<\/p>\n
     \/\/\u6839\u636e\u6dfb\u52a0\u64cd\u4f5c\u5224\u65ad\u8fd4\u56de\u5185\u5bb9
     \/\/ if success
     return new BaseResponse.<Void>\/*\u4f1a\u6709\u7070\u8272\u8b66\u544a\uff0c\u5373\u53ef\u5c06\u5176\u7701\u7565*\/success();<\/p>\n
     \/\/ if failed …
    }                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : wolfie <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4e0a\u9762\u8bf4\u4e86 \u95ee\u53f7\uff0c\u6216\u8005\u4e0d\u7406\u4f1a\u7f16\u8bd1\u5668\u63d0\u9192 \u4e0d\u52a0\u6cdb\u578b\u4e5f\u6ca1\u95ee\u9898\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : passerbytiny <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4f60\u9700\u8981\u6784\u9020\u7684\u662f\uff1aBaseResponse<Object>\uff0c\u5728\u54ea\u3002\u4efb\u4f55\u7c7b\u578b\u53ef\u4ee5\u627f\u8f7d null\uff0c\u5728\u4f60\u53ea\u9700\u8981\u5b83\u662f null \u800c\u4e0d\u5173\u5fc3\u5177\u4f53\u7c7b\u578b\u7684\u65f6\u5019\uff0c\u6700\u9ad8\u57fa\u7c7b Object \u662f\u4e00\u4e2a\u52c9\u5f3a\u7684\u9009\u62e9\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : passerbytiny <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5982\u679c\u4f60\u8fd9\u91cc\u7684\u6cdb\u578b\uff0c\u5e76\u4e0d\u662f\u7ed9\u7c7b\u4f3c Swagger \u8fd9\u6837\u7684\u81ea\u52a8\u751f\u6210 API \u6587\u6863\u7684\u5de5\u5177\u7528\u7684\uff0c\u90a3\u4e48\u5b83\u662f\u753b\u86c7\u6dfb\u8db3\u7684\u4e1c\u897f\uff0c\u56e0\u4e3a Cortroller \u65b9\u6cd5\u662f\u975e\u6846\u67b6\u4ee3\u7801\u4e2d\u7684\u6700\u5916\u5c42\u2014\u2014\u9664\u4e86\u6846\u67b6\u4e0d\u4f1a\u6709\u4eba\u4ece\u5b83\u90a3\u91cc\u83b7\u53d6\u8fd4\u56de\u503c\u3002<\/p>\n
    \u8fd9\u91cc\u53bb\u6389\u6cdb\u578b\uff0c\u76f4\u63a5\u5c06 data \u5b9a\u4e49\u6210 Object \u7c7b\u578b\uff0c\u4f1a\u66f4\u597d\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : AoEiuV020 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6211\u4e00\u822c\u7528 String\uff0c                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : xuanbg <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 public class BaseResponse implements Serializable {
     private static final long serialVersionUID = 1L;<\/p>\n
     private int code;
     private String message;
     private Object data;<\/p>\n
     \/\/… \u7701\u7565\u6784\u9020\u65b9\u6cd5\u7b49<\/p>\n
     public static BaseResponse success() {
     return new BaseResponse();
     }
     public static BaseResponse success(String message) {
     return new BaseResponse(RespCodeEnum.SUCCESS, message);
     }<\/p>\n
     \/\/… \u7701\u7565\u5931\u8d25\u7b49
    }<\/p>\n
    \u4e0d\u7528\u6cdb\u578b\uff0c\u7528 Object \u3002\u56e0\u4e3a\u4f60\u4e0d\u7528\u77e5\u9053\u7c7b\u578b\u4e5f\u80fd\u5e8f\u5217\u5316\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : xuanbg <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5f53\u7136\uff0c\u4f60\u8981\u7528 swgger \u8fd9\u4e9b\u81ea\u52a8\u5316\u6587\u6863\u7684\u8bdd\uff0c\u8fd4\u56de\u7684\u65f6\u5019\u7a7a\u4e5f\u4e0d\u5f71\u54cd\u554a\u3002\u4e3a\u5565\u8981 new BaseResponse \uff1f return this \u5c31\u884c\u4e86\u5440\u3002<\/p>\n
     public BaseResponse success() {
     setCode(200);
     setMessage(“\u8bf7\u6c42\u6210\u529f”);<\/p>\n
     return this;
     }                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : Oktfolio <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 BaseResponse<?>                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : beichenhpy <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5c31\u662f\u8bf4\u4f60\u7684 data \u662f T \u7c7b\u578b\u7684\uff1f\u6211\u4eec\u4e00\u822c\u7528<?>\u4ee3\u66ff                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : EscYezi <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 https:\/\/gist.github.com\/yeziyezi\/9f42b951fed3a547409ed1552381c1d4