{"id":207840,"date":"2025-07-08T13:54:29","date_gmt":"2025-07-08T05:54:29","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207840\/"},"modified":"2025-07-08T13:54:29","modified_gmt":"2025-07-08T05:54:29","slug":"%e4%bd%bf%e7%94%a8-json-unmarshal-%e6%97%b6%e4%bf%9d%e7%95%99%e5%b0%be%e9%9a%8f%e9%9b%b6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207840\/","title":{"rendered":"\u4f7f\u7528 json.Unmarshal() \u65f6\u4fdd\u7559\u5c3e\u968f\u96f6"},"content":{"rendered":"<p><b><\/b> <\/p>\n<p>\u5f53\u524d\u4f4d\u7f6e\uff1a <span>&gt;<\/span> <span>&gt;<\/span> <span>&gt;<\/span> <span>&gt;<\/span> <span>\u4f7f\u7528 json.Unmarshal() \u65f6\u4fdd\u7559\u5c3e\u968f\u96f6<\/span><\/p>\n<p><span>\u6765\u6e90\uff1astackoverflow<\/span><br \/>\n<span>2024-04-25 22:54:35<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u4f60\u5728\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">Golang<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\u5417\uff1f\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u4f7f\u7528 json.Unmarshal() \u65f6\u4fdd\u7559\u5c3e\u968f\u96f6\u300b<\/span>\uff0c\u4e3b\u8981\u4ecb\u7ecd\u7684\u5185\u5bb9\u5c31\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\uff0c\u5982\u679c\u4f60\u60f3\u63d0\u5347\u81ea\u5df1\u7684\u5f00\u53d1\u80fd\u529b\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7\u8fd9\u7bc7\u6587\u7ae0\uff0c\u5927\u5bb6\u8981\u77e5\u9053\u7f16\u7a0b\u7406\u8bba\u57fa\u7840\u548c\u5b9e\u6218\u64cd\u4f5c\u90fd\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u54e6\uff01<\/p>\n<p> \u95ee\u9898\u5185\u5bb9<br \/>\n <\/p>\n<p>\u8fd9\u4e0d\u662f stop json.marshal() \u4ece\u6d6e\u70b9\u6570\u4e2d\u5220\u9664\u5c3e\u968f\u96f6\u7684\u91cd\u590d\uff0c\u56e0\u4e3a\u6211\u5e0c\u671b<strong>un<\/strong>\u7f16\u7ec4\uff08\u5373\u89e3\u6790 json \u7f16\u7801\u6570\u636e\uff09\u3002<\/p>\n<p>\u540e\u9762\u7684 <code>.0<\/code> \u5728\u4e0b\u9762\u7684\u4ee3\u7801\u4e2d\u88ab\u5220\u9664\uff1ahttps:\/\/play.golang.org\/p\/jrq3osvott5\u3002<\/p>\n<pre>package main\n\nimport (\n    \"encoding\/json\"\n    \"fmt\"\n)\n\nfunc main() {\n    var result map[string]interface{}\n    json.Unmarshal([]byte(`{\"foo\": 1.0}`), &amp;result)\n    \n    \/\/ map[foo:1]\n    fmt.Println(result)\n}\n<\/pre>\n<p>json \u7684\u7ed3\u6784\u4ec5\u5728\u8fd0\u884c\u65f6\u624d\u77e5\u9053\uff0c\u56e0\u6b64\u6211\u5fc5\u987b\u5c06\u5176\u89e3\u6790\u4e3a <code>map[string]interface{}<\/code>\u3002<\/p>\n<p>\u867d\u7136\u6211\u77e5\u9053 <code>1<\/code> \u548c <code>1.0<\/code> \u5728\u6570\u503c\u4e0a\u662f\u7b49\u4ef7\u7684\uff0c\u4f46\u6211\u9700\u8981\u80fd\u591f\u533a\u5206\u4e24\u8005\u3002<\/p>\n<p> <\/p>\n<h2>\u89e3\u51b3\u65b9\u6848<\/h2>\n<p> <\/p>\n<p>\u9ed8\u8ba4\u7684\u89e3\u7ec4\u5668\u4f7f\u7528 float64\u3002\u60a8\u5fc5\u987b\u5c06 <code>decoder<\/code> \u4e0e <code>usenumber<\/code> \u4e00\u8d77\u4f7f\u7528\uff0c\u7136\u540e\u6570\u5b57\u5c06\u88ab\u89e3\u7ec4\u4e3a <code>json.number<\/code> \u5e76\u4e14\u60a8\u53ef\u4ee5\u5904\u7406\u5b83\u4eec\u3002<\/p>\n<pre>func main() {\n    var result map[string]interface{}\n    dec := json.NewDecoder(strings.NewReader(`{\"foo\": 1.0}`))\n    dec.UseNumber()\n    dec.Decode(&amp;result)\n\n    \/\/ map[foo:1]\n    fmt.Println(result)\n    fmt.Println(result[\"foo\"].(json.Number).String())\n    fmt.Println(result[\"foo\"].(json.Number).Float64())\n}<\/pre>\n<p>\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300a\u4f7f\u7528 json.Unmarshal() \u65f6\u4fdd\u7559\u5c3e\u968f\u96f6\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591aGolang\u77e5\u8bc6\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f53\u524d\u4f4d\u7f6e\uff1a &gt; &gt; &#46;&#46;&#46;<\/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-207840","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207840","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=207840"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207840\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207840"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207840"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207840"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}