add example for customRequest

.gitignore

@@ -27,3 +27,4 @@ lib
 coverage
 yarn.lock
 es
+package-lock.json

examples/customRequest.html

@@ -0,0 +1 @@
+placeholder

examples/customRequest.js

@@ -0,0 +1,83 @@
+/* eslint no-console:0 */
+import React from 'react';
+import ReactDOM from 'react-dom';
+import Upload from 'rc-upload';
+import axios from 'axios';
+
+const uploadProps = {
+  action: '/upload.do',
+  multiple: false,
+  data: { a: 1, b: 2 },
+  headers: {
+    Authorization: '$prefix $token',
+  },
+  onStart(file) {
+    console.log('onStart', file, file.name);
+  },
+  onSuccess(ret, file) {
+    console.log('onSuccess', ret, file.name);
+  },
+  onError(err) {
+    console.log('onError', err);
+  },
+  onProgress({ percent }, file) {
+    console.log('onProgress', `${percent}%`, file.name);
+  },
+  customRequest({
+    action,
+    data,
+    file,
+    filename,
+    headers,
+    onError,
+    onProgress,
+    onSuccess,
+    withCredentials,
+  }) {
+    // EXAMPLE: post form-data with 'axios'
+    const formData = new FormData();
+    if (data) {
+      Object.keys(data).map(key => {
+        formData.append(key, data[key]);
+      });
+    }
+    formData.append(filename, file);
+
+    axios
+      .post(action, formData, {
+        withCredentials,
+        headers,
+        onUploadProgress: ({ total, loaded }) => {
+          onProgress({ percent: Math.round(loaded / total * 100).toFixed(2) }, file);
+        },
+      })
+      .then(({ data: response }) => {
+        onSuccess(response, file);
+      })
+      .catch(onError);
+
+    return {
+      abort() {
+        console.log('upload progress is aborted.');
+      },
+    };
+  },
+};
+
+const Test = () => {
+  return (
+    <div
+      style={{
+        margin: 100,
+      }}
+    >
+      <div>
+        <Upload {...uploadProps}>
+          <button>开始上传</button>
+        </Upload>
+      </div>
+    </div>
+  );
+};
+
+ReactDOM.render(<Test />, document.getElementById('__react-content'));

package.json

@@ -37,6 +37,7 @@
     "coverage": "jest --coverage && cat ./coverage/lcov.info | coveralls"
   },
   "devDependencies": {
+    "axios": "^0.18.0",
     "co-busboy": "^1.3.0",
     "coveralls": "^2.13.1",
     "expect.js": "0.3.x",