{"id":207266,"date":"2025-07-08T10:58:29","date_gmt":"2025-07-08T02:58:29","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207266\/"},"modified":"2025-07-08T10:58:29","modified_gmt":"2025-07-08T02:58:29","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-golang-%e5%b0%86-microsoft-sql-varbinarymax-%e5%ad%97%e6%ae%b5%e6%8f%90%e5%8f%96%e5%88%b0%e5%9b%be%e5%83%8f%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207266\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528 golang \u5c06 Microsoft SQL varbinary(max) \u5b57\u6bb5\u63d0\u53d6\u5230\u56fe\u50cf\uff1f"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5982\u4f55\u4f7f\u7528 golang \u5c06 Microsoft SQL varbinary(max) \u5b57\u6bb5\u63d0\u53d6\u5230\u56fe\u50cf\uff1f<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-21 11:21:34<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u5b66\u4e60\u77e5\u8bc6\u8981\u5584\u4e8e\u601d\u8003\uff0c\u601d\u8003\uff0c\u518d\u601d\u8003\uff01\u4eca\u5929\u5c0f\u7f16\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765\u300a\u5982\u4f55\u4f7f\u7528 golang \u5c06 Microsoft SQL varbinary(max) \u5b57\u6bb5\u63d0\u53d6\u5230\u56fe\u50cf\uff1f\u300b<\/span>\uff0c\u4ee5\u4e0b\u5185\u5bb9\u4e3b\u8981\u5305\u542b<\/span>\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u6216\u51c6\u5907\u5b66\u4e60Golang<\/span>\uff0c\u5c31\u90fd\u4e0d\u8981\u9519\u8fc7\u672c\u6587\u5566~\u8ba9\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff0c\u80fd\u5e2e\u52a9\u5230\u4f60\u5c31\u66f4\u597d\u4e86\uff01<\/span><\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u6211\u5728 microsoft sql server \u4e2d\u6709\u4e00\u4e2a varbinary(max) \u5b57\u6bb5\uff0c\u5176\u4e2d\u5305\u542b\u56fe\u50cf\u3002<\/p>\n

\u8fd0\u884c\u201cselect image from table\u201d\u65f6\uff0c\u6211\u5f97\u5230\u7684\u7ed3\u679c\u7c7b\u4f3c\u4e8e\u201c0x07fd30….\u201d<\/p>\n

\u5f53\u4f7f\u7528 go \u68c0\u7d22\u6570\u636e\u65f6\uff0c\u6211\u5f97\u5230\u4e86\u5b58\u50a8\u4e3a []byte \u7684\u76f8\u540c\u5341\u516d\u8fdb\u5236\u5b57\u7b26\u4e32\uff1a<\/p>\n

type person struct {\n    personid string\n    image    []byte\n}<\/pre>\n
\u6211\u8fde\u63a5\u5230\u6570\u636e\u5e93\u5e76\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a<\/p>\n
rows.scan(&person.personid, &person.image)<\/pre>\n
\u7136\u540e\u5c06\u7ed3\u679c\u6253\u5370\u4e3a\u5341\u516d\u8fdb\u5236\uff0c\u662f\u4e00\u6837\u7684\uff1a<\/p>\n
fmt.printf(\"%#x\", p.image)<\/pre>\n
\u7ed3\u679c\uff1a<\/p>\n
0x07fd30...<\/pre>\n
\u6211\u7684\u95ee\u9898\u662f\uff0c\u5982\u4f55\u5c06\u5176\u8f6c\u56de\u56fe\u50cf\uff1f<\/p>\n
\u6211\u5c1d\u8bd5\u5c06\u539f\u59cb\u5b57\u8282\u5199\u5165\u6587\u4ef6\uff1a<\/p>\n
ioutil.writefile(\".\/tempfile.png\", p.image, 0644)<\/pre>\n
\u6211\u5c1d\u8bd5\u4f7f\u7528\u56fe\u50cf\u5e93\u5bf9\u5176\u8fdb\u884c\u89e3\u7801\uff0c\u4f46\u8fd9\u53ea\u662f\u9519\u8bef\u7c7b\u578b\u4e0d\u660e\uff1a<\/p>\n
image.Decode(bytes.NewReader(p.Image))<\/pre>\n
\u4e5f\u5c1d\u8bd5\u4e86 png.encode<\/code> \u3002<\/p>\n
\u975e\u5e38\u611f\u8c22\u4efb\u4f55\u6b63\u786e\u65b9\u5411\u7684\u60f3\u6cd5\u6216\u6307\u793a\u3002<\/p>\n
\u63d0\u524d\u975e\u5e38\u611f\u8c22\u3002<\/p>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u4f7f\u7528 ioutil.writefile(\".\/tempfile.png\", p.image, 0644)<\/code> \u5c06\u539f\u59cb\u5b57\u8282\u5199\u5165\u6587\u4ef6\u4f3c\u4e4e\u662f\u6b63\u786e\u7684\u8fc7\u7a0b\u3002\u4f46\u662f\uff0c\u65e0\u8bba\u51fa\u4e8e\u4f55\u79cd\u539f\u56e0\uff0c\u5f53\u4f7f\u7528 bindata \u7c7b\u5c06\u6587\u4ef6\u4fdd\u5b58\u5230\u6570\u636e\u5e93\u65f6\uff0cmicrosoft dynamics ax 2012 \u4f3c\u4e4e\u5728\u6587\u4ef6\u5f00\u5934\u6dfb\u52a0\u4e86\u989d\u5916\u7684 7 \u4e2a\u5b57\u8282\u3002\u56e0\u6b64\uff0c\u4f7f\u7528 ioutil.writefile(s, p.image[7:], 0644)<\/code> \u6709\u6548\u3002\u6211\u60f3\u4e86\u89e3\u8fd9 7 \u4e2a\u5b57\u8282\u662f\u4ec0\u4e48\u4ee5\u53ca\u5b83\u4eec\u7684\u7528\u9014\uff0c\u4f46\u90a3\u662f\u53e6\u4e00\u5929\u7684\u4e8b\u4e86\u3002\u8c22\u8c22\u3002<\/p>\n
darren \u5173\u4e8e\u524d 7 \u4e2a\u5b57\u8282\u603b\u662f\u7531 ax \u6dfb\u52a0\u5230\u56fe\u50cf\u6587\u4ef6\u7684\u8bf4\u6cd5\u662f\u6b63\u786e\u7684\uff0c\u5373 07fd3097f90000<\/code>\u3002 \u4e0d\u5e78\u7684\u662f\uff0c\u4f3c\u4e4e ax \u8fd8\u5728\u4e8c\u8fdb\u5236\u6587\u4ef6\u7684\u672b\u5c3e\u6dfb\u52a0\u4e86\u5176\u4ed6\u4fe1\u606f\u3002\u6211\u8fd8\u6ca1\u6709\u5f04\u6e05\u695a\u786e\u5207\u7684\u6a21\u5f0f\uff0c\u4f46\u901a\u5e38\u5982\u679c\u4e0a\u4f20\u7684\u56fe\u50cf\u662f .png\uff0cax \u53ea\u4f1a\u5c06 ff<\/code> \u6dfb\u52a0\u5230\u672b\u5c3e\uff0c\u5426\u5219\u4f1a\u5bf9\u6587\u4ef6\u8fdb\u884c\u5927\u91cf\u66f4\u6539\u3002<\/p>\n
\u5c31\u60a8\u7684\u60c5\u51b5\u800c\u8a00\uff0c\u5982\u679c\u60a8\u53ea\u5bf9 sql server \u4e2d\u5b58\u50a8\u7684\u4e00\u4e2a\u7279\u5b9a\u56fe\u50cf\u611f\u5174\u8da3\uff0c\u8bf7\u67e5\u770b\u4e8c\u8fdb\u5236\u6587\u4ef6\u5e76\u67e5\u770b\u5b83\u662f\u5426\u4ee5 ff<\/code> \u7ed3\u5c3e\u3002\u5982\u679c\u662f\uff0c\u53bb\u6389\u591a\u4f59\u7684\u5b57\u8282\uff0c\u7136\u540e\u8f6c\u6210base64\u663e\u793a\u3002<\/p>\n
var data=\"0xFFD8FFE000104A464946....d\";\n\nvar bytes = [];\n\nfor(var i=2; i< data.length-1; i+=2){\n    bytes.push(parseInt(data.substr(i, 2), 16));\n}\n\/\/str contains the base64 form of the image\nvar str = btoa(String.fromCharCode.apply(String, bytes));<\/pre>\n
\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8eGolang\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/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-207266","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207266","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=207266"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207266\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207266"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207266"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}