add helper getClientIp

app/extend/helper.js

@@ -245,6 +245,16 @@ module.exports = {
     return array;
   },
 
+    // 获取客户端IP
+  getClientIP() {
+    const { ctx } = this;
+    const ips = ctx.request.header['x-forwarded-for'];
+    const ipList = ips ? ips.split(',') : [ '' ];
+    const ip = ipList[0];
+    return ip;
+  },
+
+
   JsonParse(jsonStr) {
     try {
       return JSON.parse(jsonStr);