koa-wechat-body

a module to parse wechat xml message to json for Koa

Install

npm install koa-wechat-body

Usage

const koa = require('koa');
const koaWechatBody = require('koa-wechat-body');
const bodyParser = require('koa-bodyparser');

const app = koa();

app.use(koaWechatBody(options));
app.use(bodyParser());

app.use(async (ctx) {
    ctx.body = ctx.request.body;
});

Example

http request raw body:

<xml>   
  <return_code><![CDATA[SUCCESS]]></return_code>  
  <return_msg><![CDATA[OK]]></return_msg> 
</xml>

parse result, ctx.request.body:

{
  "return_code": "SUCCESS",
  "return_msg": "OK"
}

Options

Please refer to koa-xml-body

• encoding: requested encoding. Default is utf8. If not set, the lib will retrive it from content-type(such as content-type:application/xml;charset=gb2312).
• limit: limit of the body. If the body ends up being larger than this limit, a 413 error code is returned. Default is 1mb.
• length: length of the body. When content-length is found, it will be overwritten automatically.
• onerror: error handler. Default is a noop function. It means it will eat the error silently. You can config it to customize the response.
• xmlOptions: the options of xml2js

app.use(koaWechatBody({
    limit: 128,
    length: 200, // '1mb'|1024... If not sure about the effect, just leave it unspecified
    encoding: 'utf8', // lib will detect it from `content-type`
    onerror: (err, ctx) => {
      ctx.throw(err.status, err.message);
    },
    xmlOptions: {
      explicitArray: false
    }
}));

Licences

MIT