修改api

@@ -6,31 +6,36 @@
 const logger = global.yoho.logger;
 
 const serverError = (err, req, res, next) => { // eslint-disable-line
-    logger.error(err);
+  logger.error(err);
+  let code = 500, msg = '服务器错误！';
 
-    return res.status(500).json({
-        code: 500,
-        message: '服务器错误！'
-    });
+  if (err.code && typeof err.code === 'number' && err.code !== 500 && err.message && !err.message.match(/_ERROR/gi)[0]) {
+    code = err.code;
+    msg = err.message;
+  }
+  return res.status(code).json({
+    code: code,
+    message: msg
+  });
 };
 
 
 const notFound = (req, res) => {
-    res.status(404);
-
-    if (req.xhr) {
-        return res.json({
-            code: 404,
-            message: '请求路径不存在'
-        });
-    }
+  res.status(404);
 
-    res.render('error/404', {
-        layout: false
+  if (req.xhr) {
+    return res.json({
+      code: 404,
+      message: '请求路径不存在'
     });
+  }
+
+  res.render('error/404', {
+    layout: false
+  });
 };
 
 module.exports = {
-    notFound,
-    serverError
+  notFound,
+  serverError
 };