{"id":10021048,"date":"2025-10-24T01:36:26","date_gmt":"2025-10-23T17:36:26","guid":{"rendered":"https:\/\/itmax.cn\/?p=10021048"},"modified":"2025-10-24T01:36:26","modified_gmt":"2025-10-23T17:36:26","slug":"jackson-%e5%ba%8f%e5%88%97%e5%8c%96%e7%9a%84%e9%9a%90%e6%80%a7%e6%88%90%e6%9c%ac","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10021048","title":{"rendered":"Jackson \u5e8f\u5217\u5316\u7684\u9690\u6027\u6210\u672c"},"content":{"rendered":"<p>\u6211\u4eec\u5e38\u4ee5\u4e3a\u63a5\u53e3\u7684\u74f6\u9888\u5728\u6570\u636e\u5e93\u6216\u4e1a\u52a1\u903b\u8f91\uff0c\u4f46\u5728\u9ad8\u5e76\u53d1\u3001\u6d77\u91cf\u8bf7\u6c42\u4e0b\uff0c\u771f\u6b63\u541e\u566c CPU \u7684\uff0c\u53ef\u80fd\u662f\u201c\u628a\u5bf9\u8c61\u53d8\u6210 JSON\u201d\u7684\u90a3\u4e00\u6b65\u3002\u5f53\u76d1\u63a7\u628a\u5e8f\u5217\u5316\u65f6\u95f4\u5355\u72ec\u62c6\u51fa\u6765\uff0c\u4f60\u4f1a\u60ca\u8bb6\u5b83\u80fd\u8ba9\u8d26\u5355\u5931\u63a7\u3002\u8fd9\u7bc7\u300aThe Hidden Cost of Jackson Serialization\u300b\u5bf9\u6211\u542f\u53d1\u5f88\u5927\uff1a\u9ed8\u8ba4\u597d\u7528\u7684 Jackson\uff0c\u5728\u67d0\u4e9b\u573a\u666f\u53ef\u80fd\u6210\u4e3a\u70ed\u8def\u5f84\u7684\u6210\u672c\u4e2d\u5fc3\u3002\u4e0b\u9762\u987a\u624b\u5206\u4eab\u7ed9\u5927\u5bb6\u53c2\u8003\uff0c\u4ee5\u4e0b\u5185\u5bb9\u7ffb\u8bd1\u6574\u7406\u81ea <a href=\"https:\/\/link.segmentfault.com\/?enc=Z1Agv6GQ0dSyKNKssfkVGA%3D%3D.H5tgAx7hJ%2Bw3B46e%2FRcW5NzXESA71S1YclnqdgMvaCFe1cq9kMg0bJBzgNEfgP1qQvZc8%2FzdX%2FzFc5znWE2psh14KTwoJ1ovy%2Fkjv%2BWCDwwyWQ3Xeo8BK422Z%2FH0oIl7\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">\u300aThe Hidden Cost of Jackson Serialization\u300b<\/a>\u3002<\/p>\n<p>Jackson \u5f88\u5f3a\u5927\uff0c\u76f4\u5230\u4f60\u770b\u5230\u5b83\u771f\u6b63\u8ba9\u4f60\u4ed8\u51fa\u4e86\u4ec0\u4e48\u4ee3\u4ef7\u3002\u6211\u4eec\u7684 REST API \u6b63\u5728\u5927\u628a\u5927\u628a\u7684\u82b1\u94b1\u3002\u6bcf\u4e2a JSON \u54cd\u5e94\u8981\u6d88\u8017 3\u20135ms \u7684 CPU \u65f6\u95f4\u3002\u628a\u5b83\u4e58\u4ee5\u6bcf\u5929 5000 \u4e07\u6b21\u8bf7\u6c42\uff0c\u4f60\u5c31\u4f1a\u5f97\u5230\u4e00\u5f20\u80fd\u8ba9 CTO \u6389\u773c\u6cea\u7684 AWS \u8d26\u5355\u3002\u7f6a\u9b41\u7978\u9996\uff1fJackson\u3002Java \u751f\u6001\u91cc\u6700\u6d41\u884c\u7684 JSON \u5e93\uff0c\u90a3\u4e2a\u5927\u5bb6\u51e0\u4e4e\u4e0d\u5047\u601d\u7d22\u5c31\u4f1a\u7528\u7684\u9ed8\u8ba4\u9009\u9879\u3002<\/p>\n<h2>\u4e8b\u60c5\u662f\u600e\u4e48\u5f00\u59cb\u7684\uff1f<\/h2>\n<p>\u6211\u4eec\u6709\u4e00\u4e2a\u6807\u51c6\u7684 Spring Boot \u5fae\u670d\u52a1\uff0c\u5f88\u666e\u901a\u3002<\/p>\n<pre><code class=\"java\">@RestController\npublic class UserController {\n    \n    @GetMapping(&quot;\/users\/{id}&quot;)\n    public User getUser(@PathVariable Long id) {\n        return userService.findById(id);\n    }\n}<\/code><\/pre>\n<p>\u5e72\u51c0\u3001\u7b80\u5355\uff0c\u8ddf\u6bcf\u7bc7 Spring Boot \u6559\u7a0b\u6559\u4f60\u7684\u51e0\u4e4e\u4e00\u6837\u3002<\/p>\n<p>Spring Boot \u9ed8\u8ba4\u7528 Jackson \u628a Java \u5bf9\u8c61\u8f6c\u6362\u6210 JSON\u3002\u4f60\u4e0d\u7528\u914d\u7f6e\u4ec0\u4e48\uff0c\u5b83\u5c31\u80fd\u5de5\u4f5c\u3002<\/p>\n<p>\u76f4\u5230\u4f60\u770b\u4e86\u6307\u6807\u6570\u636e\u3002<\/p>\n<h2>\u5f53\u5934\u68d2\u559d<\/h2>\n<p>\u6211\u4eec\u7684\u76d1\u63a7\u9762\u677f\u663e\u793a\u51fa\u4e00\u4e9b\u5947\u602a\u7684\u4e1c\u897f\uff1a<\/p>\n<ul>\n<li>\u6570\u636e\u5e93\u67e5\u8be2\u65f6\u95f4\uff1a8ms<\/li>\n<li>\u4e1a\u52a1\u903b\u8f91\uff1a2ms<\/li>\n<li>JSON \u5e8f\u5217\u5316\uff1a47ms<\/li>\n<\/ul>\n<p>\u7b49\u7b49\uff0c\u4ec0\u4e48\uff1f<\/p>\n<p>\u5b9e\u9645\u5de5\u4f5c\u53ea\u82b1\u4e86 10ms\u3002\u628a\u7ed3\u679c\u8f6c\u6362\u6210 JSON \u82b1\u4e86 47ms\u3002\u5c31\u50cf\u4f60\u505a\u996d\u7528\u4e86 2 \u5206\u949f\uff0c\u88c5\u76d8\u5374\u82b1\u4e86 10 \u5206\u949f\u3002<\/p>\n<p>\u6211\u4ee5\u4e3a\u662f\u6d4b\u91cf\u8bef\u5dee\uff0c\u4e8e\u662f\u8dd1\u4e86\u4e00\u4e2a profiler\u3002<\/p>\n<pre><code class=\"text\">Method                          Time    Calls\n-------------------------------- ------- -------\nJackson.writeValueAsString()     47ms    1\nUserService.findById()           8ms     1<\/code><\/pre>\n<p>\u4e0d\u662f\u3002Jackson \u786e\u5b9e\u5728\u6bcf\u6b21\u8bf7\u6c42\u91cc\uff0c\u7528 47ms \u5e8f\u5217\u5316\u4e00\u4e2a\u7b80\u5355\u7684 User \u5bf9\u8c61\u3002<\/p>\n<h2>\u6392\u67e5\u5f00\u59cb<\/h2>\n<p>\u6211\u6293\u8d77\u6211\u4eec\u7684 User \u5b9e\u4f53\uff0c\u770b\u4e86\u770b\uff1a<\/p>\n<pre><code class=\"java\">@Entity\npublic class User {\n    private Long id;\n    private String email;\n    private String firstName;\n    private String lastName;\n    \n    @OneToMany(fetch = FetchType.EAGER)\n    private List&lt;Order&gt; orders;\n    \n    @OneToMany(fetch = FetchType.EAGER)\n    private List&lt;Address&gt; addresses;\n    \n    @ManyToMany(fetch = FetchType.EAGER)\n    private List&lt;Role&gt; roles;\n}<\/code><\/pre>\n<p>\u54e6\u3002\u6211\u4eec\u628a\u6574\u5f20\u5bf9\u8c61\u56fe\u90fd\u8fd4\u56de\u51fa\u53bb\u4e86\u3002\u6bcf\u4e2a\u7528\u6237\u5bf9\u8c61\u9644\u5e26\uff1a<\/p>\n<ul>\n<li>50+ \u4e2a\u8ba2\u5355\uff08\u6bcf\u4e2a\u8ba2\u5355\u8fd8\u6709\u884c\u9879\u76ee\uff09<\/li>\n<li>3\u20134 \u4e2a\u5730\u5740<\/li>\n<li>\u591a\u4e2a\u89d2\u8272<\/li>\n<\/ul>\n<p>Jackson \u5728\u6bcf\u6b21\u8bf7\u6c42\u4e2d\u5e8f\u5217\u5316\u4e0a\u5343\u4e2a\u5bf9\u8c61\u3002\u96be\u602a\u5b83\u6162\u3002<\/p>\n<p>\u4f46\u5173\u952e\u662f\uff1a\u6211\u4eec\u53ea\u9700\u8981\u7528\u6237\u7684\u57fa\u672c\u4fe1\u606f\u3002\u90ae\u7bb1\u548c\u59d3\u540d\uff0c\u4ec5\u6b64\u800c\u5df2\u3002<\/p>\n<h2>\u201c\u7528 DTO \u5c31\u597d\u201d\u7684\u8bba\u8c03<\/h2>\n<p>\u6bcf\u4e2a\u8d44\u6df1\u5f00\u53d1\u770b\u5230\u8fd9\uff0c\u90fd\u4f1a\u5927\u558a\uff1a\u201c\u7528 DTO \u554a\uff01\u201d<\/p>\n<p>\u662f\u7684\uff0c\u6211\u4eec\u672c\u6765\u5c31\u8be5\u4ece\u7b2c\u4e00\u5929\u8d77\u5c31\u7528\u6570\u636e\u4f20\u8f93\u5bf9\u8c61\uff08DTO\uff09\u3002\u4f46\u6211\u4eec\u6ca1\u6709\u3002<\/p>\n<p>\u4e3a\u4ec0\u4e48\uff1f\u56e0\u4e3a Spring Boot \u8fd4\u56de\u5b9e\u4f53\u592a\u5bb9\u6613\u4e86\u3002\u5728\u5feb\u901f\u8fed\u4ee3\u51fa\u529f\u80fd\u65f6\uff0c\u4f60\u4f1a\u8d70\u6377\u5f84\u3002<\/p>\n<p>\u8fd9\u4e9b\u6377\u5f84\u4f1a\u8fc5\u901f\u7d2f\u79ef\u3002<\/p>\n<p>\u6211\u4eec\u6709 73 \u4e2a REST \u63a5\u53e3\u3002\u90fd\u76f4\u63a5\u8fd4\u56de JPA \u5b9e\u4f53\u3002\u628a\u5b83\u4eec\u5168\u90e8\u91cd\u6784\u6210 DTO \u8981\u82b1\u4e0a\u51e0\u5468\u3002<\/p>\n<p>\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u66f4\u5feb\u7684\u4fee\u590d\u65b9\u5f0f\u3002<\/p>\n<h2>\u5feb\u901f\u4f18\u5316\u4e00\uff1a@JsonView<\/h2>\n<p>Jackson \u6709\u4e2a\u53eb <code>@JsonView<\/code> \u7684\u7279\u6027\uff0c\u53ef\u4ee5\u63a7\u5236\u88ab\u5e8f\u5217\u5316\u7684\u5b57\u6bb5\uff1a<\/p>\n<pre><code class=\"java\">public class Views {\n    public static class Basic {}\n    public static class Detailed {}\n}\n\n@Entity\npublic class User {\n    @JsonView(Views.Basic.class)\n    private Long id;\n    \n    @JsonView(Views.Basic.class)\n    private String email;\n    \n    @JsonView(Views.Detailed.class)\n    private List&lt;Order&gt; orders;\n}<\/code><\/pre>\n<pre><code class=\"java\">@RestController\npublic class UserController {\n    \n    @JsonView(Views.Basic.class)\n    @GetMapping(&quot;\/users\/{id}&quot;)\n    public User getUser(@PathVariable Long id) {\n        return userService.findById(id);\n    }\n}<\/code><\/pre>\n<p>\u7ed3\u679c\uff1a\u5e8f\u5217\u5316\u65f6\u95f4\u4ece 47ms \u964d\u5230 12ms\u3002<\/p>\n<p>\u597d\u4e00\u4e9b\uff0c\u4f46\u5bf9\u6211\u4eec\u7684\u89c4\u6a21\u4ecd\u7136\u592a\u6162\u3002<\/p>\n<h2>\u5feb\u901f\u4f18\u5316\u4e8c\uff1a\u7981\u7528\u7528\u4e0d\u5230\u7684\u529f\u80fd<\/h2>\n<p>Jackson \u9ed8\u8ba4\u542f\u7528\u4e86\u5f88\u591a\u7279\u6027\uff0c\u5176\u4e2d\u4e0d\u5c11\u4f60\u5e76\u4e0d\u9700\u8981\uff1a<\/p>\n<pre><code class=\"java\">@Configuration\npublic class JacksonConfig {\n    \n    @Bean\n    public ObjectMapper objectMapper() {\n        ObjectMapper mapper = new ObjectMapper();\n        \n        \/\/ \u7981\u7528\u5f00\u9500\u8f83\u5927\u7684\u7279\u6027\n        mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);\n        mapper.disable(SerializationFeature.FAIL_ON_EMPTY_BEANS);\n        mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);\n        \n        \/\/ \u542f\u7528\/\u8c03\u6574\u66f4\u5feb\u7684\u884c\u4e3a\n        mapper.disable(MapperFeature.USE_GETTERS_AS_SETTERS);\n        mapper.disable(MapperFeature.AUTO_DETECT_GETTERS);\n        mapper.disable(MapperFeature.AUTO_DETECT_IS_GETTERS);\n        \n        return mapper;\n    }\n}<\/code><\/pre>\n<p>\u7ed3\u679c\uff1a\u518d\u7701 3ms\uff0c\u964d\u5230 9ms\u3002<\/p>\n<h2>\u771f\u6b63\u7684\u95ee\u9898\uff1a\u53cd\u5c04<\/h2>\n<p>Jackson \u7528\u53cd\u5c04\u53bb\u68c0\u67e5\u4f60\u7684\u5bf9\u8c61\u3001\u51b3\u5b9a\u5982\u4f55\u5e8f\u5217\u5316\u3002<\/p>\n<p>\u53cd\u5c04\u5f88\u6162\u3002\u975e\u5e38\u6162\u3002<\/p>\n<p>Jackson \u6bcf\u6b21\u5e8f\u5217\u5316\u4e00\u4e2a\u5bf9\u8c61\u65f6\uff1a<\/p>\n<ol>\n<li>\u68c0\u67e5\u7c7b\u7ed3\u6784\uff08\u6709\u54ea\u4e9b\u5b57\u6bb5\uff09<\/li>\n<li>\u901a\u8fc7\u53cd\u5c04\u8c03\u7528 getter<\/li>\n<li>\u628a\u503c\u8f6c\u6362\u6210 JSON \u5b57\u7b26\u4e32<\/li>\n<li>\u5904\u7406\u7a7a\u503c\u548c\u7c7b\u578b\u8f6c\u6362<\/li>\n<\/ol>\n<p>\u5bf9\u4e8e\u4e00\u4e2a\u7b80\u5355\u7684 User \u5bf9\u8c61\uff0c\u8fd9\u4e5f\u8bb8\u6ca1\u95ee\u9898\u3002\u4f46\u5f53\u4f60\u6bcf\u5929\u8981\u5e8f\u5217\u5316\u590d\u6742\u7684\u5bf9\u8c61\u56fe\u4e0a\u5343\u4e07\u6b21\uff0c\u8fd9\u4e9b\u6beb\u79d2\u5c31\u4f1a\u53d8\u6210\u94b1\u3002<\/p>\n<h2>\u6838\u9009\u9879\uff1a\u624b\u5199\u5e8f\u5217\u5316<\/h2>\n<p>\u5982\u679c\u6211\u4eec\u2026\u2026\u81ea\u5df1\u628a JSON \u62fc\u51fa\u6765\u5462\uff1f<\/p>\n<pre><code class=\"java\">@RestController\npublic class UserController {\n    \n    @GetMapping(&quot;\/users\/{id}&quot;)\n    public String getUser(@PathVariable Long id) {\n        User user = userService.findById(id);\n        \n        return String.format(\n            &quot;{\/&quot;id\/&quot;:%d,\/&quot;email\/&quot;:\/&quot;%s\/&quot;,\/&quot;firstName\/&quot;:\/&quot;%s\/&quot;,\/&quot;lastName\/&quot;:\/&quot;%s\/&quot;}&quot;,\n            user.getId(),\n            user.getEmail(),\n            user.getFirstName(),\n            user.getLastName()\n        );\n    }\n}<\/code><\/pre>\n<p>\u7ed3\u679c\uff1a0.8ms\u3002<\/p>\n<p>\u4ece 47ms \u5230 0.8ms\uff0c\u63d0\u5347\u4e86 58 \u500d\u3002<\/p>\n<p>\u4f46\u662f\u2026\u2026\u8fd9\u662f\u4e0d\u662f\u592a\u75af\u72c2\u4e86\uff1f\u6211\u4eec\u4eff\u4f5b\u53c8\u56de\u5230\u4e86 1999 \u5e74\u7684\u5b57\u7b26\u4e32\u62fc\u63a5\u65f6\u4ee3\u3002<\/p>\n<h2>\u88ab\u5ffd\u7565\u7684\u4e89\u8bba<\/h2>\n<p>\u8fd9\u91cc\u4f1a\u6709\u70b9\u4e89\u8bae\u3002<\/p>\n<ul>\n<li>A \u961f\uff1a\u624b\u5199\u5e8f\u5217\u5316\u4e0d\u53ef\u7ef4\u62a4\u3002\u7528 Jackson + DTO \u624d\u5bf9\u3002<\/li>\n<li>B \u961f\uff1aJackson \u662f\u6027\u80fd\u74f6\u9888\u3002\u5199\u81ea\u5b9a\u4e49\u5e8f\u5217\u5316\u5668\u3002<\/li>\n<\/ul>\n<p>\u4e24\u8fb9\u90fd\u5bf9\uff0c\u4e5f\u90fd\u4e0d\u5b8c\u5168\u5bf9\u3002<\/p>\n<p>\u771f\u6b63\u7684\u7b54\u6848\u53d6\u51b3\u4e8e\u4f60\u7684\u89c4\u6a21\uff1a<\/p>\n<h2>\u5982\u679c\u6bcf\u5929\u8bf7\u6c42 &lt; 100 \u4e07<\/h2>\n<p>\u7528 Jackson\u3002\u5f00\u53d1\u6548\u7387\u503c\u5f97\u90a3\u70b9\u6027\u80fd\u4ee3\u4ef7\u3002<\/p>\n<h2>\u5982\u679c\u6bcf\u5929\u8bf7\u6c42 1000 \u4e07+<\/h2>\n<p>\u5728\u70ed\u8def\u5f84\u4e0a\u8003\u8651\u81ea\u5b9a\u4e49\u5e8f\u5217\u5316\u3002\u7ef4\u62a4\u6210\u672c\u80fd\u88ab AWS \u8d26\u5355\u7684\u8282\u7701\u62b5\u6d88\u3002<\/p>\n<h2>\u5982\u679c\u6bcf\u5929\u8bf7\u6c42 1 \u4ebf+<\/h2>\n<p>\u4f60\u5927\u6982\u5e94\u8be5\u7528 Protocol Buffers \u6216 FlatBuffers \u4e86\u3002<\/p>\n<h2>\u6211\u4eec\u7684\u5b9e\u9645\u505a\u6cd5<\/h2>\n<p>\u6211\u4eec\u91c7\u7528\u4e86\u6df7\u5408\u65b9\u6848\uff1a<\/p>\n<ol>\n<li>\u5bf9 90% \u7684\u63a5\u53e3\u4ecd\u7528 Jackson\uff08\u6d41\u91cf\u4f4e\u3001\u54cd\u5e94\u590d\u6742\uff09<\/li>\n<li>\u5bf9\u4e2d\u7b49\u6d41\u91cf\u7684\u63a5\u53e3\u4f7f\u7528 <code>@JsonView<\/code>\uff08\u7b80\u5355\u4f18\u5316\uff09<\/li>\n<li>\u5bf9 5 \u4e2a\u5173\u952e\u63a5\u53e3\u7f16\u5199\u81ea\u5b9a\u4e49\u5e8f\u5217\u5316\u5668\uff08\u9ad8\u6d41\u91cf\u3001\u54cd\u5e94\u7b80\u5355\uff09<\/li>\n<\/ol>\n<p>\u8fd9 5 \u4e2a\u63a5\u53e3\u5360\u4e86\u6211\u4eec 80% \u7684\u6d41\u91cf\u3002\u53ea\u4f18\u5316\u8fd9\u51e0\u4e2a\u5c31\u6bcf\u6708\u7ed9\u6211\u4eec\u7701\u4e86\u7ea6 4200 \u7f8e\u5143\u7684 AWS \u6210\u672c\u3002<\/p>\n<h2>\u4f60\u5e94\u8be5\u8dd1\u7684\u57fa\u51c6\u6d4b\u8bd5<\/h2>\n<p>\u522b\u4fe1\u6211\u7684\u6570\u5b57\u3002\u7528\u4f60\u7684\u4ee3\u7801\u6d4b\u8bd5\uff1a<\/p>\n<pre><code class=\"java\">@Test\npublic void benchmarkSerialization() {\n    ObjectMapper mapper = new ObjectMapper();\n    User user = createComplexUser();\n    \n    long start = System.nanoTime();\n    for (int i = 0; i &lt; 10000; i++) {\n        mapper.writeValueAsString(user);\n    }\n    long end = System.nanoTime();\n    \n    System.out.println(&quot;Time per serialization: &quot; + \n        (end - start) \/ 10000 \/ 1_000 + &quot;\u03bcs&quot;);\n}<\/code><\/pre>\n<p>\u7528\u4f60\u7684\u771f\u5b9e\u9886\u57df\u5bf9\u8c61\u8dd1\u3002\u5982\u679c\u7ed3\u679c &gt; 100\u03bcs\uff0c\u90a3\u4f60\u5c31\u6709\u95ee\u9898\u9700\u8981\u5173\u6ce8\u3002<\/p>\n<h2>\u6709\u5e2e\u52a9\u7684\u5de5\u5177<\/h2>\n<ul>\n<li>JProfiler\uff1a\u7cbe\u786e\u5c55\u793a\u65f6\u95f4\u82b1\u5728\u4e86\u54ea\u91cc<\/li>\n<li>Spring Boot Actuator \u6307\u6807\uff1a\u6309\u63a5\u53e3\u7edf\u8ba1\u5e8f\u5217\u5316\u65f6\u95f4<\/li>\n<li>JMH\uff08Java \u5fae\u57fa\u51c6\u6d4b\u8bd5\u6846\u67b6\uff09\uff1a\u66f4\u51c6\u786e\u7684\u6027\u80fd\u6d4b\u8bd5<\/li>\n<li>Jackson \u7684 <code>@JsonView<\/code>\uff1a\u4e0d\u7528\u5927\u6539\u5c31\u80fd\u6709\u5feb\u901f\u6536\u76ca<\/li>\n<\/ul>\n<h2>\u6211\u4eec\u72af\u8fc7\u7684\u5e38\u89c1\u9519\u8bef<\/h2>\n<ul>\n<li>\u9519\u8bef 1\uff1a\u8fc7\u5ea6\u4fe1\u4efb\u9ed8\u8ba4<br \/>Spring Boot \u7684\u9ed8\u8ba4\u503c\u66f4\u504f\u5411\u5f00\u53d1\u4f53\u9a8c\uff0c\u800c\u975e\u6027\u80fd\u3002\u591a\u6570\u5e94\u7528\u8fd9\u6ca1\u95ee\u9898\u3002\u4f46\u5728\u89c4\u6a21\u5316\u573a\u666f\u4e0b\uff0c\u9ed8\u8ba4\u4f1a\u201c\u5bb3\u4eba\u201d\u3002<\/li>\n<li>\u9519\u8bef 2\uff1a\u4e0d\u6d4b\u91cf<br \/>\u6211\u4eec\u7684 API \u8dd1\u4e86 8 \u4e2a\u6708\uff0c\u6ca1\u4eba\u505a\u8fc7\u6027\u80fd\u5256\u6790\u30028 \u4e2a\u6708\u7684\u51a4\u6789\u94b1\uff0c\u53ea\u56e0\u4e3a\u6211\u4eec\u4ee5\u4e3a\u201c\u5e94\u8be5\u6ca1\u95ee\u9898\u201d\u3002<\/li>\n<li>\u9519\u8bef 3\uff1a\u76f4\u63a5\u8fd4\u56de\u5b9e\u4f53<br \/>JPA \u5b9e\u4f53\u7528\u4e8e\u6301\u4e45\u5316\uff0cDTO \u7528\u4e8e API\u3002\u6df7\u7528\u4e0d\u4ec5\u6709\u6027\u80fd\u95ee\u9898\uff0c\u8fd8\u4f1a\u5e26\u6765\u5b89\u5168\u98ce\u9669\uff08\u4e0d\u5c0f\u5fc3\u66b4\u9732\u654f\u611f\u5b57\u6bb5\uff09\u3002<\/li>\n<li>\u9519\u8bef 4\uff1a\u8fc7\u65e9\u4f18\u5316<br \/>\u95ee\u9898\u89e3\u51b3\u540e\uff0c\u56e2\u961f\u6709\u4eba\u60f3\u201c\u628a\u6240\u6709\u5730\u65b9\u90fd\u4f18\u5316\u4e00\u4e0b\u201d\u3002\u8fd9\u662f\u574f\u4e3b\u610f\u3002\u5148\u4f18\u5316\u70ed\u8def\u5f84\uff0c\u6d4b\u91cf\uff0c\u518d\u51b3\u5b9a\u662f\u5426\u7ee7\u7eed\u3002<\/li>\n<\/ul>\n<h2>\u4e0d\u90a3\u4e48\u8212\u670d\u7684\u771f\u76f8<\/h2>\n<p>Jackson \u5e76\u4e0d\u6162\u3002<\/p>\n<p>Jackson \u6b63\u5728\u505a\u5b83\u88ab\u8bbe\u8ba1\u8981\u505a\u7684\u4e8b\uff1a\u5728\u96f6\u914d\u7f6e\u7684\u60c5\u51b5\u4e0b\uff0c\u5904\u7406\u4efb\u610f\u7ed3\u6784\u7684 Java \u5bf9\u8c61\u3002<\/p>\n<p>\u8fd9\u79cd\u7075\u6d3b\u6027\u662f\u6709\u4ee3\u4ef7\u7684\u3002\u53cd\u5c04\u3001\u7c7b\u578b\u68c0\u67e5\u3001\u7a7a\u503c\u5904\u7406\u3001\u5faa\u73af\u5f15\u7528\u68c0\u6d4b\u2014\u2014\u8fd9\u4e9b\u90fd\u8981\u65f6\u95f4\u3002<\/p>\n<p>\u95ee\u9898\u4e0d\u5728 Jackson\uff0c\u800c\u5728\u201c\u628a\u4e00\u5207\u90fd\u4ea4\u7ed9 Jackson\u201d\u3002<\/p>\n<h2>\u66ff\u4ee3\u65b9\u6848<\/h2>\n<p>\u5982\u679c\u4f60\u9047\u5230 Jackson \u7684\u74f6\u9888\uff0c\u8fd9\u91cc\u662f\u4e00\u4e9b\u9009\u62e9\uff1a<\/p>\n<ol>\n<li>\n<p>Protocol Buffers\uff08protobuf\uff09<\/p>\n<ul>\n<li>\u4e8c\u8fdb\u5236\u683c\u5f0f\uff0c\u6781\u5feb<\/li>\n<li>\u9700\u8981\u5b9a\u4e49 schema<\/li>\n<li>\u4e0d\u53ef\u8bfb<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>MessagePack<\/p>\n<ul>\n<li>\u4e8c\u8fdb\u5236 JSON\uff0c\u901a\u5e38\u6bd4\u6587\u672c JSON \u5feb<\/li>\n<li>\u5f88\u591a\u573a\u666f\u53ef\u4f5c\u4e3a\u66ff\u4ee3<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>FastJSON<\/p>\n<ul>\n<li>\u53f7\u79f0\u6bd4 Jackson \u66f4\u5feb<\/li>\n<li>\u4f46\u5386\u53f2\u4e0a\u6709\u8fc7\u5b89\u5168\u95ee\u9898<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u81ea\u5b9a\u4e49\u5e8f\u5217\u5316\u5668<\/p>\n<ul>\n<li>\u53ef\u80fd\u662f\u6700\u5feb\u7684<\/li>\n<li>\u7ef4\u62a4\u6210\u672c\u9ad8<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u597d\u597d\u7528 DTO<\/p>\n<ul>\n<li>\u8ba4\u771f\u70b9\uff0c\u8fd9\u80fd\u89e3\u51b3 90% \u7684\u95ee\u9898<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2>\u771f\u6b63\u7684\u6559\u8bad<\/h2>\n<p>\u4f60\u6ca1\u6709 Jackson \u95ee\u9898\uff0c\u4f60\u6709\u67b6\u6784\u95ee\u9898\u3002<\/p>\n<p>\u5982\u679c Jackson \u6162\uff0c\u90a3\u662f\u56e0\u4e3a\u4f60\u5e8f\u5217\u5316\u4e86\u592a\u591a\u6570\u636e\u3002\u4fee\u7684\u662f\u6570\u636e\uff0c\u4e0d\u662f\u5e93\u3002<\/p>\n<p>\u7528 DTO\u3001\u7528\u6295\u5f71\u3001\u7528 <code>@JsonView<\/code>\uff0c\u5982\u679c\u9700\u8981\u7528\u6237\u81ea\u5b9a\u4e49\u54cd\u5e94\u7ed3\u6784\u53ef\u4ee5\u7528 GraphQL\u3002<\/p>\n<p>\u522b\u628a\u8d23\u4efb\u63a8\u7ed9 Jackson\uff0c\u5b83\u53ea\u662f\u5fe0\u5b9e\u5730\u5e8f\u5217\u5316\u4e86\u4f60\u8ba9\u5b83\u5e8f\u5217\u5316\u7684\u5e9e\u5927\u5bf9\u8c61\u56fe\u3002<\/p>\n<h2>\u884c\u52a8\u8ba1\u5212<\/h2>\n<p>\u4f60\u5e94\u8be5\u8fd9\u6837\u505a\uff1a<\/p>\n<p><strong>\u6b65\u9aa4 1\uff1a<\/strong> \u52a0\u6307\u6807\uff0c\u8ddf\u8e2a\u5e8f\u5217\u5316\u65f6\u95f4<\/p>\n<pre><code class=\"java\">@Around(&quot;@annotation(org.springframework.web.bind.annotation.GetMapping)&quot;)\npublic Object measureSerialization(ProceedingJoinPoint joinPoint) throws Throwable {\n    long start = System.nanoTime();\n    Object result = joinPoint.proceed();\n    long serializationTime = System.nanoTime() - start;\n    \n    metrics.recordSerializationTime(serializationTime);\n    return result;\n}<\/code><\/pre>\n<p><strong>\u6b65\u9aa4 2\uff1a<\/strong> \u5256\u6790\u4f60\u6700\u70ed\u7684 10 \u4e2a\u63a5\u53e3<\/p>\n<p><strong>\u6b65\u9aa4 3\uff1a<\/strong> \u82e5\u5e8f\u5217\u5316\u65f6\u95f4 &gt; \u54cd\u5e94\u65f6\u95f4\u7684 20%\uff0c\u7ee7\u7eed\u8c03\u67e5<\/p>\n<p><strong>\u6b65\u9aa4 4\uff1a<\/strong> \u5148\u4fee\u6700\u4e25\u91cd\u7684\u51e0\u4e2a<\/p>\n<p><strong>\u6b65\u9aa4 5\uff1a<\/strong> \u518d\u6b21\u6d4b\u91cf<\/p>\n<p>\u4e0d\u8981\u76f2\u76ee\u4f18\u5316\u3002\u4e0d\u8981\u76f2\u76ee\u76f8\u4fe1\u6846\u67b6\u3002\u6d4b\u91cf\u4e00\u5207\u3002<\/p>\n<h2>\u6211\u9884\u671f\u4f1a\u770b\u5230\u7684\u8bc4\u8bba<\/h2>\n<ul>\n<li>\u201c\u7528 gRPC\/GraphQL\/REST \u66ff\u4ee3\u5c31\u597d\uff01\u201d<br \/>\u53ef\u4ee5\uff0c\u5982\u679c\u4f60\u80fd\u91cd\u6784\u6574\u4e2a API\u3002\u591a\u6570\u56e2\u961f\u505a\u4e0d\u5230\u3002<\/li>\n<li>\u201cDTO \u80fd\u89e3\u51b3\u6240\u6709\u95ee\u9898\uff01\u201d<br \/>\u5b83\u80fd\u89e3\u51b3\u5f88\u591a\u3002\u4f46\u5373\u4fbf\u7528\u4e86 DTO\uff0c\u5982\u679c\u4f60\u8fd8\u5728\u5e8f\u5217\u5316\u5de8\u5927\u7684\u5217\u8868\uff0cJackson \u4ecd\u4f1a\u6162\u3002<\/li>\n<li>\u201c\u624b\u5199\u5e8f\u5217\u5316\u662f\u6280\u672f\u503a\uff01\u201d<br \/>50K \u7684 AWS \u8d26\u5355\u4e5f\u662f\u3002\u62e9\u5176\u8f7b\u3002<\/li>\n<li>\u201c\u8fd9\u662f\u8fc7\u65e9\u4f18\u5316\uff01\u201d<br \/>\u5f53\u4f60\u6bcf\u6708\u5728\u65e0\u8c13\u7684 CPU \u5468\u671f\u4e0a\u82b1 4K \u7f8e\u5143\u65f6\uff0c\u5c31\u4e0d\u662f\u4e86\u3002<\/li>\n<\/ul>\n<h2>\u5c3e\u58f0<\/h2>\n<p>Jackson \u5f88\u597d\uff0cSpring Boot \u4e5f\u5f88\u68d2\u3002<\/p>\n<p>\u4f46\u201c\u597d\u201d\u4e0d\u4ee3\u8868\u201c\u9002\u7528\u4e8e\u6240\u6709\u89c4\u6a21\u201d\u3002<\/p>\n<p>\u5728\u67d0\u4e2a\u65f6\u523b\uff0c\u4f60\u9700\u8981\u8d28\u7591\u9ed8\u8ba4\u503c\uff1b\u5728\u67d0\u4e2a\u65f6\u523b\uff0c\u4f60\u9700\u8981\u6d4b\u91cf\uff1b\u5728\u67d0\u4e2a\u65f6\u523b\uff0c\u4f60\u9700\u8981\u5728\u5f00\u53d1\u6548\u7387\u4e0e\u8fd0\u884c\u6210\u672c\u4e4b\u95f4\u505a\u8270\u96be\u53d6\u820d\u3002<\/p>\n<p>\u6211\u4eec\u5728\u6bcf\u5929 5000 \u4e07\u8bf7\u6c42\u65f6\u9047\u5230\u4e86\u8fd9\u4e2a\u65f6\u523b\u3002\u4f60\u53ef\u80fd\u66f4\u65e9\u3001\u4e5f\u53ef\u80fd\u66f4\u665a\uff0c\u751a\u81f3\u6c38\u8fdc\u4e0d\u4f1a\u9047\u5230\u3002<\/p>\n<p>\u4f46\u5f53\u4f60\u9047\u5230\u65f6\uff0c\u5e0c\u671b\u4f60\u80fd\u8bb0\u8d77\u8fd9\u7bc7\u6587\u7ae0\u3002<\/p>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000047341517\">https:\/\/segmentfault.com\/a\/1190000047341517<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u4eec\u5e38\u4ee5\u4e3a\u63a5\u53e3\u7684\u74f6\u9888\u5728\u6570\u636e\u5e93\u6216\u4e1a\u52a1\u903b\u8f91\uff0c\u4f46\u5728\u9ad8\u5e76\u53d1\u3001\u6d77\u91cf\u8bf7\u6c42\u4e0b\uff0c\u771f\u6b63\u541e\u566c CPU \u7684\uff0c\u53ef\u80fd\u662f\u201c\u628a\u5bf9\u8c61\u53d8\u6210 JS [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10021048","post","type-post","status-publish","format-standard","hentry","category-share"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10021048","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10021048"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10021048\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10021048"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10021048"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10021048"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}