图片基本处理

{"value":"**imageView2** \u63d0\u4f9b\u7b80\u5355\u5feb\u6377\u7684\u56fe\u7247\u683c\u5f0f\u8f6c\u6362\u3001\u7f29\u7565\u3001\u8d28\u91cf\u53d8\u6362\u529f\u80fd\u3002\u53ea\u9700\u8981\u586b\u5199\u51e0\u4e2a\u53c2\u6570\uff0c\u5373\u53ef\u5bf9\u56fe\u7247\u8fdb\u884c\u7f29\u7565\u64cd\u4f5c\uff0c\u751f\u6210\u5404\u79cd\u7f29\u7565\u56fe\u3002\n\n### **\u9650\u5236\u8bf4\u660e**\n\n\u4f7f\u7528\u670d\u52a1\u65f6\u6709\u5982\u4e0b\u9650\u5236\uff1a\n\n- \u539f\u56fe\u9650\u5236\n - \u539f\u56fe\u683c\u5f0f\u652f\u6301\uff1a `psd`\u3001`jpeg`\u3001`png`\u3001`gif`\u3001`webp`\u3001`tiff`\u3001`bmp`\uff08webp\u52a8\u56fe\uff0c\u4ec5\u652f\u6301 \u6301\u4e45\u5316\u5904\u7406\uff09\n- \u8f93\u51fa\u9650\u5236\n - \u8f93\u51fa\u4e3agif\uff0c\u4e00\u822c\u5904\u7406\u65f6\u95f4\u6bd4\u8f83\u957f\uff0c\u5efa\u8bae\u4f18\u5148\u4f7f\u7528 \u6301\u4e45\u5316\u5904\u7406\n- \u540c\u6b65\u5904\u7406\n - \u53ea\u652f\u6301 20MB \u4ee5\u5185\u7684\u56fe\u7247\uff0c\u8d85\u8fc7 20MB \u7684\u56fe\u7247\u9700\u8981\u4f7f\u7528\u6301\u4e45\u5316\u5904\u7406\n - \u5904\u7406\u524d\u7684`gif`\u6700\u5927\u5e27\u6570\u4e3a 200\n - \u5904\u7406\u524d\u7684\u56fe\u7247`w`\u548c`h`\u53c2\u6570\u4e0d\u80fd\u8d85\u8fc73\u4e07\u50cf\u7d20\uff0c\u603b\u50cf\u7d20\u4e0d\u80fd\u8d85\u8fc71.5\u4ebf\u50cf\u7d20\n - \u5904\u7406\u540e\u7684\u56fe\u7247`w`\u548c`h`\u53c2\u6570\u4e0d\u80fd\u8d85\u8fc79999\u50cf\u7d20\uff0c\u603b\u50cf\u7d20\u4e0d\u5f97\u8d85\u8fc724999999\uff082500w-1\uff09\u50cf\u7d20\n- \u6301\u4e45\u5316\u5904\u7406\n - \u56fe\u7247\u6587\u4ef6\u5927\u5c0f\u6ca1\u6709\u9650\u5236\n - \u5904\u7406\u524d\u7684`gif`\u3001`webp\u52a8\u56fe`\uff0c\u6700\u5927\u5e27\u6570\u4e3a 500\n - \u5904\u7406\u524d\u7684\u56fe\u7247`w`\u548c`h`\u53c2\u6570\u4e0d\u80fd\u8d85\u8fc73\u4e07\u50cf\u7d20\uff0c\u603b\u50cf\u7d20\u4e0d\u80fd\u8d85\u8fc71.5\u4ebf\u50cf\u7d20\n - \u5904\u7406\u540e\u7684\u56fe\u7247`w`\u548c`h`\u53c2\u6570\u4e0d\u80fd\u8d85\u8fc714999\u50cf\u7d20\uff0c\u603b\u50cf\u7d20\u4e0d\u5f97\u8d85\u8fc759999999\uff086000w-1\uff09\u50cf\u7d20\n\n### **\u63a5\u53e3\u89c4\u683c**\n\n**\u6ce8\u610f**\uff1a\u63a5\u53e3\u89c4\u683c\u4e0d\u542b\u4efb\u4f55\u7a7a\u683c\u4e0e\u6362\u884c\u7b26\u3002\n\n```\nimageView2\/<mode>\/w\/<LongEdge>\n \/h\/<ShortEdge>\n \/format\/<Format>\n \/interlace\/<Interlace>\n \/q\/<Quality>\n \/colors\/<colors>\n \/ignore-error\/<ignoreError>\n```\n\n### \u53c2\u6570\u8bf4\u660e\n\n\u5176\u4e2d `<mode>` \u5fc5\u586b\uff0c\u5206\u4e3a\u5982\u4e0b\u51e0\u79cd\u60c5\u51b5\uff1a\n\n| \u6a21\u5f0f | \u8bf4\u660e |\n| ------------------------------- | ------------------------------------------------------------ |\n| `\/0\/w\/<LongEdge>\/h\/<ShortEdge>` | \u9650\u5b9a\u7f29\u7565\u56fe\u7684\u957f\u8fb9\u6700\u591a\u4e3a`<LongEdge>`\uff0c\u77ed\u8fb9\u6700\u591a\u4e3a`<ShortEdge>`\uff0c\u8fdb\u884c\u7b49\u6bd4\u7f29\u653e\uff0c\u4e0d\u88c1\u526a\u3002\u5982\u679c\u53ea\u6307\u5b9a `w` \u53c2\u6570\u5219\u8868\u793a\u9650\u5b9a\u957f\u8fb9\uff08\u77ed\u8fb9\u81ea\u9002\u5e94\uff09\uff0c\u53ea\u6307\u5b9a `h` \u53c2\u6570\u5219\u8868\u793a\u9650\u5b9a\u77ed\u8fb9\uff08\u957f\u8fb9\u81ea\u9002\u5e94\uff09\u3002 |\n| `\/1\/w\/<Width>\/h\/<Height>` | \u9650\u5b9a\u7f29\u7565\u56fe\u7684\u5bbd\u6700\u5c11\u4e3a`<Width>`\uff0c\u9ad8\u6700\u5c11\u4e3a`<Height>`\uff0c\u8fdb\u884c\u7b49\u6bd4\u7f29\u653e\uff0c\u5c45\u4e2d\u88c1\u526a\u3002\u8f6c\u540e\u7684\u7f29\u7565\u56fe\u901a\u5e38\u6070\u597d\u662f `<Width>x<Height>` \u7684\u5927\u5c0f\uff08\u6709\u4e00\u4e2a\u8fb9\u7f29\u653e\u7684\u65f6\u5019\u4f1a\u56e0\u4e3a\u8d85\u51fa\u77e9\u5f62\u6846\u800c\u88ab\u88c1\u526a\u6389\u591a\u4f59\u90e8\u5206\uff09\u3002\u5982\u679c\u53ea\u6307\u5b9a `w` \u53c2\u6570\u6216\u53ea\u6307\u5b9a `h` \u53c2\u6570\uff0c\u4ee3\u8868\u9650\u5b9a\u4e3a\u957f\u5bbd\u76f8\u7b49\u7684\u6b63\u65b9\u56fe\u3002 |\n| `\/2\/w\/<Width>\/h\/<Height>` | \u9650\u5b9a\u7f29\u7565\u56fe\u7684\u5bbd\u6700\u591a\u4e3a`<Width>`\uff0c\u9ad8\u6700\u591a\u4e3a`<Height>`\uff0c\u8fdb\u884c\u7b49\u6bd4\u7f29\u653e\uff0c\u4e0d\u88c1\u526a\u3002\u5982\u679c\u53ea\u6307\u5b9a `w` \u53c2\u6570\u5219\u8868\u793a\u9650\u5b9a\u5bbd\uff08\u9ad8\u81ea\u9002\u5e94\uff09\uff0c\u53ea\u6307\u5b9a `h` \u53c2\u6570\u5219\u8868\u793a\u9650\u5b9a\u9ad8\uff08\u5bbd\u81ea\u9002\u5e94\uff09\u3002\u5b83\u548c\u6a21\u5f0f0\u7c7b\u4f3c\uff0c\u533a\u522b\u53ea\u662f\u9650\u5b9a\u5bbd\u548c\u9ad8\uff0c\u4e0d\u662f\u9650\u5b9a\u957f\u8fb9\u548c\u77ed\u8fb9\u3002\u4ece\u5e94\u7528\u573a\u666f\u6765\u8bf4\uff0c\u6a21\u5f0f0\u9002\u5408\u79fb\u52a8\u8bbe\u5907\u4e0a\u505a\u7f29\u7565\u56fe\uff0c\u6a21\u5f0f2\u9002\u5408PC\u4e0a\u505a\u7f29\u7565\u56fe\u3002 |\n| `\/3\/w\/<Width>\/h\/<Height>` | \u9650\u5b9a\u7f29\u7565\u56fe\u7684\u5bbd\u6700\u5c11\u4e3a`<Width>`\uff0c\u9ad8\u6700\u5c11\u4e3a`<Height>`\uff0c\u8fdb\u884c\u7b49\u6bd4\u7f29\u653e\uff0c\u4e0d\u88c1\u526a\u3002\u5982\u679c\u53ea\u6307\u5b9a `w` \u53c2\u6570\u6216\u53ea\u6307\u5b9a `h` \u53c2\u6570\uff0c\u4ee3\u8868\u957f\u5bbd\u9650\u5b9a\u4e3a\u540c\u6837\u7684\u503c\u3002\u4f60\u53ef\u4ee5\u7406\u89e3\u4e3a\u6a21\u5f0f1\u662f\u6a21\u5f0f3\u7684\u7ed3\u679c\u518d\u505a\u5c45\u4e2d\u88c1\u526a\u5f97\u5230\u7684\u3002 |\n| `\/4\/w\/<LongEdge>\/h\/<ShortEdge>` | \u9650\u5b9a\u7f29\u7565\u56fe\u7684\u957f\u8fb9\u6700\u5c11\u4e3a`<LongEdge>`\uff0c\u77ed\u8fb9\u6700\u5c11\u4e3a`<ShortEdge>`\uff0c\u8fdb\u884c\u7b49\u6bd4\u7f29\u653e\uff0c\u4e0d\u88c1\u526a\u3002\u5982\u679c\u53ea\u6307\u5b9a `w` \u53c2\u6570\u6216\u53ea\u6307\u5b9a `h` \u53c2\u6570\uff0c\u8868\u793a\u957f\u8fb9\u77ed\u8fb9\u9650\u5b9a\u4e3a\u540c\u6837\u7684\u503c\u3002\u8fd9\u4e2a\u6a21\u5f0f\u5f88\u9002\u5408\u5728\u624b\u6301\u8bbe\u5907\u505a\u56fe\u7247\u7684\u5168\u5c4f\u67e5\u770b\uff08\u628a\u8fd9\u91cc\u7684\u957f\u8fb9\u77ed\u8fb9\u5206\u522b\u8bbe\u4e3a\u624b\u673a\u5c4f\u5e55\u7684\u5206\u8fa8\u7387\u5373\u53ef\uff09\uff0c\u751f\u6210\u7684\u56fe\u7247\u5c3a\u5bf8\u521a\u597d\u5145\u6ee1\u6574\u4e2a\u5c4f\u5e55\uff08\u67d0\u4e00\u4e2a\u8fb9\u53ef\u80fd\u4f1a\u8d85\u51fa\u5c4f\u5e55\uff09\u3002 |\n| `\/5\/w\/<LongEdge>\/h\/<ShortEdge>` | \u9650\u5b9a\u7f29\u7565\u56fe\u7684\u957f\u8fb9\u6700\u5c11\u4e3a`<LongEdge>`\uff0c\u77ed\u8fb9\u6700\u5c11\u4e3a`<ShortEdge>`\uff0c\u8fdb\u884c\u7b49\u6bd4\u7f29\u653e\uff0c\u5c45\u4e2d\u88c1\u526a\u3002\u5982\u679c\u53ea\u6307\u5b9a `w` \u53c2\u6570\u6216\u53ea\u6307\u5b9a `h` \u53c2\u6570\uff0c\u8868\u793a\u957f\u8fb9\u77ed\u8fb9\u9650\u5b9a\u4e3a\u540c\u6837\u7684\u503c\u3002\u540c\u4e0a\u6a21\u5f0f4\uff0c\u4f46\u8d85\u51fa\u9650\u5b9a\u7684\u77e9\u5f62\u90e8\u5206\u4f1a\u88ab\u88c1\u526a\u3002 |\n| `\/format\/<Format>` | \u65b0\u56fe\u7684\u8f93\u51fa\u683c\u5f0f \u53d6\u503c\u8303\u56f4\uff1a`jpg`\uff0c`gif`\uff0c`png`\uff0c`webp`\u7b49\uff0c\u9ed8\u8ba4\u4e3a\u539f\u56fe\u683c\u5f0f\u3002\u6ce8\uff1a\u5f53\u539f\u56fe\u4e3aheic\u65f6\uff0c\u4e0d\u6307\u5b9a\u8f93\u51fa\u683c\u5f0f\uff0c\u4f1a\u8f93\u51fajpg\u3002 |\n| `\/interlace\/<Interlace>` | \u662f\u5426\u652f\u6301\u6e10\u8fdb\u663e\u793a \u53d6\u503c\u8303\u56f4\uff1a`1` \u652f\u6301\u6e10\u8fdb\u663e\u793a\uff0c`0`\u4e0d\u652f\u6301\u6e10\u8fdb\u663e\u793a(\u9ed8\u8ba4\u4e3a0)\u3002 \u9002\u7528\u76ee\u6807\u683c\u5f0f\uff1a`jpg` \u6548\u679c\uff1a\u7f51\u901f\u6162\u65f6\uff0c\u56fe\u7247\u663e\u793a\u7531\u6a21\u7cca\u5230\u6e05\u6670\u3002 |\n| `\/colors\/<colors>` | \u6e90\u56fe\u7247\u4e3a GIF \u65f6\uff0c\u63a7\u5236\u8f93\u51fa GIF \u4e2d\u4e0d\u540c\u989c\u8272\u7684\u6570\u91cf\uff0c\u53d6\u503c\u53ef\u4e3a2\u30014\u30018\u300116\u300132\u300164\u3001128\u6216256\uff0c\u4e0d\u4f7f\u7528\u8be5\u53c2\u6570\u65f6\u7684\u9ed8\u8ba4\u503c\u4e3a128\u3002 |\n| `\/q\/<Quality>` | \u65b0\u56fe\u7684\u56fe\u7247\u8d28\u91cf \u53d6\u503c\u8303\u56f4\u662f[1, 100]\uff0c\u9ed8\u8ba475\u3002 \u7cfb\u7edf\u4f1a\u6839\u636e\u539f\u56fe\u8d28\u91cf\u7b97\u51fa\u4e00\u4e2a[\u4fee\u6b63\u503c](https:\/\/portal.7oss-hk.cdncloud.com\/doc\/kodoe\/API-Image-ImageView2.html#image-quality)\uff0c\u53d6\u4fee\u6b63\u503c\u548c\u6307\u5b9a\u503c\u4e2d\u7684\u5c0f\u503c\u3002 **\u6ce8\u610f\uff1a **- \u6307\u5b9a\u503c\u540e\u9762\u53ef\u4ee5\u589e\u52a0 `!`\uff0c\u8868\u793a\u5f3a\u5236\u4f7f\u7528\u6307\u5b9a\u503c\uff0c\u5982`100!`\u3002 - \u53ea\u652f\u6301\u539f\u56fe\u7c7b\u578b\uff1ajpg\u3002 |\n| `\/ignore-error\/<ignoreError>` | \u4e3b\u8981\u9488\u5bf9\u56fe\u7247\u517c\u5bb9\u6027\u7684\u95ee\u9898\u5bfc\u81f4\u65e0\u6cd5\u5904\u7406\uff0c\u53d6\u503c\u4e3a`1`\u65f6\uff0c\u5219\u5904\u7406\u5931\u8d25\u65f6\u8fd4\u56de\u539f\u56fe\uff1b \u4e0d\u8bbe\u7f6e\u6b64\u53c2\u6570\uff0c\u9ed8\u8ba4\u5904\u7406\u5931\u8d25\u65f6\u8fd4\u56de\u9519\u8bef\u4fe1\u606f\u3002 |\n\n**\u6ce8\u610f\uff1a**\n\n- \u6240\u6709\u6a21\u5f0f\u90fd\u53ef\u4ee5\u53ea\u6307\u5b9a`w`\u53c2\u6570\u6216\u53ea\u6307\u5b9a`h`\u53c2\u6570\uff0c\u5e76\u83b7\u5f97\u5408\u7406\u7ed3\u679c\u3002\u5728`w\u3001h`\u4e3a\u9650\u5b9a\u6700\u5927\u503c\u65f6\uff0c\u672a\u6307\u5b9a\u67d0\u53c2\u6570\u7b49\u4ef7\u4e8e\u5c06\u8be5\u53c2\u6570\u8bbe\u7f6e\u4e3a\u65e0\u7a77\u5927\uff08\u81ea\u9002\u5e94\uff09\uff1b\u5728`w\u3001h`\u4e3a\u9650\u5b9a\u6700\u5c0f\u503c\u65f6\uff0c\u672a\u6307\u5b9a\u53c2\u6570\u7b49\u4e8e\u7ed9\u5b9a\u7684\u53c2\u6570\uff0c\u4e5f\u5c31\u9650\u5b9a\u7684\u77e9\u5f62\u662f\u6b63\u65b9\u5f62\u3002\n- \u65b0\u56fe\u7684\u5bbd\/\u9ad8\/\u957f\u8fb9\/\u77ed\u8fb9\uff0c\u4e0d\u4f1a\u6bd4\u539f\u56fe\u5927\uff0c\u5373\u672c\u63a5\u53e3\u603b\u662f `\u7f29\u5c0f\u56fe\u7247`\u3002\n- \u5982\u679c\u539f\u56fe\u5e26\u6709[EXIF](https:\/\/portal.7oss-hk.cdncloud.com\/doc\/kodoe\/API-Image-ImageView2.html)\u4fe1\u606f\u4e14\u5305\u542b`Orientation`\u5b57\u6bb5\uff0c`imageView2`\u9ed8\u8ba4\u6839\u636e\u6b64\u5b57\u6bb5\u7684\u503c\u8fdb\u884c\u81ea\u52a8\u65cb\u8f6c\u4fee\u6b63\u3002\n- \u5f53\u4e00\u5f20\u542b\u6709\u900f\u660e\u533a\u57df\u7684\u56fe\u7247\uff0c\u8f6c\u6362\u6210\u4e0d\u652f\u6301\u900f\u660e\u7684\u683c\u5f0f`jpg`,`bmp`\u7b49\u65f6\uff0c\u900f\u660e\u533a\u57df\u586b\u5145\u767d\u8272\u3002\n\n\n\n- `<Quality>`\u4fee\u6b63\u503c\u7b97\u6cd5:\n - \u539f\u56fe quality <= 90\uff1a**min[90, \u539f\u56fequality\\*sqrt**\uff0c\u539f\u56fe\u957f\u5bbd\u4e58\u79ef\/\u7ed3\u679c\u56fe\u7247\u957f\u5bbd\u4e58\u79ef\n - \u539f\u56fe quality > 90\uff1a **\u539f\u56fequality\\*sqrt**\uff0c\u539f\u56fe\u957f\u5bbd\u4e58\u79ef\/\u7ed3\u679c\u56fe\u7247\u957f\u5bbd\u4e58\u79ef\n\n### **\u793a\u4f8b**\n\n**0.** \u539f\u56fe\n\n```\nhttp:\/\/dn-odum9helk.qbox.me\/resource\/gogopher.jpg\n```\n\n**1.** \u88c1\u526a\u6b63\u4e2d\u90e8\u5206\uff0c\u7b49\u6bd4\u7f29\u5c0f\u751f\u6210200x200\u7f29\u7565\u56fe\uff1a\n\n```\nhttp:\/\/dn-odum9helk.qbox.me\/resource\/gogopher.jpg?imageView2\/1\/w\/200\/h\/200\n```\n\n**2.** \u5bbd\u5ea6\u56fa\u5b9a\u4e3a200px\uff0c\u9ad8\u5ea6\u7b49\u6bd4\u7f29\u5c0f\uff0c\u751f\u6210200x133\u7f29\u7565\u56fe\uff1a\n\n```\nhttp:\/\/dn-odum9helk.qbox.me\/resource\/gogopher.jpg?imageView2\/2\/w\/200\n```\n\n**3.** \u9ad8\u5ea6\u56fa\u5b9a\u4e3a200px\uff0c\u5bbd\u5ea6\u7b49\u6bd4\u7f29\u5c0f\uff0c\u751f\u6210300x200\u7f29\u7565\u56fe\uff1a\n\n```\nhttp:\/\/dn-odum9helk.qbox.me\/resource\/gogopher.jpg?imageView2\/2\/h\/200\n```\n\n**4.** \u6e10\u8fdb\u663e\u793a\u56fe\u7247\uff1a\n\n```\nhttp:\/\/dn-odum9helk.qbox.me\/resource\/gogopher.jpg?imageView2\/1\/w\/200\/h\/200\/interlace\/1\n```\n\n**5.** \u8bbe\u7f6e\u56fe\u7247\u8d28\u91cf\u4e3a55\uff1a\n\n```\nhttps:\/\/dn-odum9helk.qbox.me\/resource\/gogopher.jpg?imageView2\/1\/w\/200\/h\/200\/q\/55\n```\n"}