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Posted to commits@echarts.apache.org by GitBox <gi...@apache.org> on 2020/08/13 01:22:16 UTC

[GitHub] [incubator-echarts] peach5460 opened a new issue #13114: 内部的id生成机制似乎有问题

peach5460 opened a new issue #13114:
URL: https://github.com/apache/incubator-echarts/issues/13114


   ### Version
   4.8.0
   
   ### Steps to reproduce
   第一步,我new了一个option,里面有一个graphic指定为
   ```
   {
       type: 'line',
       shape: {
       x1: myChart.convertToPixel({ xAxisIndex: 0 }, 8),
       y1: myChart.convertToPixel({ yAxisIndex: 0 }, 0),
       x2: myChart.convertToPixel({ xAxisIndex: 0 }, 8),
       y2: myChart.convertToPixel({ yAxisIndex: 0 }, 0) - axisticklegth,
     },
       style: {
       stroke: 'black'
     }
   }
   ```
   然后,我获取op转为字符串传给后端...
   ```
   function getChart() {
       var op = myChart.getOption();
       return JSON.stringify(op);
   }
   ```
   发现,获取到的op内属性是正常的,但是通过JSON.stringify以后的json字符串不正常,多了很多转义字符
   ![企业微信截图_20200813092125](https://user-images.githubusercontent.com/3350332/90083927-6fb7ff00-dd46-11ea-92d1-0591dfdddbf2.png)
   
   ### What is expected?
   希望能不要转json的时候出来这些转义字符
   
   ### What is actually happening?
   这些转义字符会导致后端处理完json后回传的时候    var op = JSON.parse(option);解析错误...
   echarts的id生成函数是否存在编码字符集问题???
   
   <!-- This issue is generated by echarts-issue-helper. DO NOT REMOVE -->
   <!-- This issue is in English. DO NOT REMOVE -->


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[GitHub] [incubator-echarts] plainheart edited a comment on issue #13114: 内部的id生成机制似乎有问题

Posted by GitBox <gi...@apache.org>.
plainheart edited a comment on issue #13114:
URL: https://github.com/apache/incubator-echarts/issues/13114#issuecomment-673260151


   源码中关于自动生成 `id` 和 `name` 使用的是 `\0` 而非空格，这是导致 `JSON.stringify` 序列化后出现 `\u0000` 的原因。
   建议为每个元素指定一个ID，避免使用ECharts自动生成的ID。


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[GitHub] [incubator-echarts] plainheart edited a comment on issue #13114: 内部的id生成机制似乎有问题

Posted by GitBox <gi...@apache.org>.
plainheart edited a comment on issue #13114:
URL: https://github.com/apache/incubator-echarts/issues/13114#issuecomment-673260151


   源码中关于自动生成 `id` 和 `name` 使用的是 `\0` 而非空格，这是导致 `JSON.stringify` 序列化后出现 `\u0000` 的原因。


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[GitHub] [incubator-echarts] plainheart commented on issue #13114: 内部的id生成机制似乎有问题

Posted by GitBox <gi...@apache.org>.
plainheart commented on issue #13114:
URL: https://github.com/apache/incubator-echarts/issues/13114#issuecomment-673260151


   源码中关于自动生成 `id` 和 `name` 使用的是 `\0` 而非空格，这是导致 `JSON.stringfiy` 序列化后出现 `\u0000` 的原因。


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[GitHub] [incubator-echarts] plainheart commented on issue #13114: 内部的id生成机制似乎有问题

Posted by GitBox <gi...@apache.org>.
plainheart commented on issue #13114:
URL: https://github.com/apache/incubator-echarts/issues/13114#issuecomment-675802271


   恐怕还是转义问题，使用 `JSON.stringify` 序列化之后的字符串中包含的 `\u0000` 空字符如 [这里](https://stackoverflow.com/questions/48668314/javascript-json-parse-with-u0000) 所说，应当被转义一次。
   ```js
   JSON.parse('{"id": "\\u0000"}'); // OK
   
   JSON.parse('{ "id": "\u0000" }'); // ERROR
   ```


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[GitHub] [incubator-echarts] peach5460 commented on issue #13114: 内部的id生成机制似乎有问题

Posted by GitBox <gi...@apache.org>.
peach5460 commented on issue #13114:
URL: https://github.com/apache/incubator-echarts/issues/13114#issuecomment-675791188


   > 后端传回是什么？这是否是后端对 json 的处理有些问题？
   
   最初的这个shape-line是前端js自动生成的，生成的时候我只设置了线段的两个端点的坐标值，id由echart自动生成。
   后来我后端获取了这个line的值，对两个端点进行了修改后回传，发现前端就报错了。
   一开始我以为是后端获取的时候字符集转换有问题。
   但是后来我在前端打印json后发现，前端对echart的option属性进行JSON.stringify后就已经有了这些uncode值了。
   
   我知道\u0000是一个合法的json字符，但是显然JSON.stringify没有对其提供支持。
   我搜了一些资料，有人说不支持是有理由的。我也不知道这个说法对不对。而且我似乎也没找到js上有别的json序列化库可用。
   我是一个后端人员，对前端的这些梗不是太熟悉，但是显然，echarts和JSON.stringify之间有一个匹配问题。
   我不知道这两个第三方库到底孰对孰错，但是我希望在官方层面来解决这个问题，而不是我手动给我new出来的每一个shape都赋值一个guid。


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[GitHub] [incubator-echarts] plainheart edited a comment on issue #13114: 内部的id生成机制似乎有问题

Posted by GitBox <gi...@apache.org>.
plainheart edited a comment on issue #13114:
URL: https://github.com/apache/incubator-echarts/issues/13114#issuecomment-675802271


   恐怕还是转义问题，使用 `JSON.stringify` 序列化之后的字符串中包含的 `\u0000` 空字符如 [这里](https://stackoverflow.com/questions/48668314/javascript-json-parse-with-u0000) 所说，应当被转义一次。
   ```js
   JSON.parse('{"id": "\\u0000"}'); // OK
   
   JSON.parse('{"id": "\u0000"}'); // ERROR
   ```


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[GitHub] [incubator-echarts] echarts-bot[bot] commented on issue #13114: 内部的id生成机制似乎有问题

Posted by GitBox <gi...@apache.org>.
echarts-bot[bot] commented on issue #13114:
URL: https://github.com/apache/incubator-echarts/issues/13114#issuecomment-673192541


   Hi! We've received your issue and please be patient to get responded. 🎉
   The average response time is expected to be within one day for weekdays.
   
   In the meanwhile, please make sure that **you have posted enough image to demo your request**. You may also check out the [API](http://echarts.apache.org/api.html) and [chart option](http://echarts.apache.org/option.html) to get the answer.
   
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   Have a nice day! 🍵


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[GitHub] [incubator-echarts] peach5460 commented on issue #13114: 内部的id生成机制似乎有问题

Posted by GitBox <gi...@apache.org>.
peach5460 commented on issue #13114:
URL: https://github.com/apache/incubator-echarts/issues/13114#issuecomment-675215166


   额……使用\0是有什么历史渊源吗？
   虽然我每个元素都自己手动指定一下ID并不困难，但是我还是很想知道，这么设计的初衷是什么


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[GitHub] [incubator-echarts] 100pah commented on issue #13114: 内部的id生成机制似乎有问题

Posted by GitBox <gi...@apache.org>.
100pah commented on issue #13114:
URL: https://github.com/apache/incubator-echarts/issues/13114#issuecomment-675330090


    \u0000 是个合法的 json 字符，
   `'\0' === '\u0000'`
   
   > 这些转义字符会导致后端处理完json后回传的时候 var op = JSON.parse(option);解析错误...
   
   后端传回是什么？这是否是后端对 json 的处理有些问题？


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