[fix]proxy after bodyparser;

lib/server/proxy.js

@@ -1,3 +1,4 @@
+const queryString = require('querystring');
 const koaConnect = require('koa2-connect');
 const httpProxy = require('http-proxy-middleware');
 const { getStatus } = require('./status');
@@ -9,7 +10,36 @@ const { getStatus } = require('./status');
  */
 const proxyMiddleware = async (ctx, next) => {
   const host = getProxyHost(ctx);
-  const proxy = httpProxy({ target: host, logLevel: 'debug' });
+  const proxy = httpProxy({
+    target: host,
+    logLevel: 'debug',
+    onProxyReq: (proxyReq, req, res) => {
+      // @NOTE:
+      // https://github.com/nodejitsu/node-http-proxy/issues/1279
+      // https://github.com/chimurai/http-proxy-middleware/issues/299
+      // https://github.com/nodejitsu/node-http-proxy/blob/master/examples/middleware/bodyDecoder-middleware.js
+      req.body = ctx.request.body;
+      if (!req.body || !Object.keys(req.body).length) {
+        return;
+      }
+
+      var contentType = proxyReq.getHeader('Content-Type');
+      var bodyData;
+
+      if (contentType === 'application/json') {
+        bodyData = JSON.stringify(req.body);
+      }
+
+      if (contentType === 'application/x-www-form-urlencoded') {
+        bodyData = queryString.stringify(req.body);
+      }
+
+      if (bodyData) {
+        proxyReq.setHeader('Content-Length', Buffer.byteLength(bodyData));
+        proxyReq.write(bodyData);
+      }
+    }
+  });
 
   await koaConnect(proxy)(ctx, next);
 };

package.json

@@ -1,6 +1,6 @@
 {
   "name": "mock-server-local",
-  "version": "2.2.0",
+  "version": "2.2.1",
   "description": "Mock your apis with a node server",
   "main": "index.js",
   "bin": {