fea: use query string to parse payload when content type is empty

src/middleware/parse_querystring_payload.js

@@ -19,7 +19,7 @@ export default class extends think.middleware.base {
     }
 
     let contentType = http.type();
-    if(contentType.indexOf('application/x-www-form-urlencoded') === -1){
+    if(contentType && contentType.indexOf('application/x-www-form-urlencoded') === -1){
       return;
     }
 

test/middleware/parse_querystring_payload.js

@@ -74,6 +74,7 @@ describe('middleware/parse_json_payload', function(){
   it('parse_querystring_payload, getPayload, contentType fail', function(done){
     getHttp('', {
       payload: '',
+      type: function(){return 'content'},
       //_post: {name: 'thinkjs'},
       getPayload: function(){
         return Promise.resolve('name=thinkjs1')
@@ -87,6 +88,22 @@ describe('middleware/parse_json_payload', function(){
       })
     })
   })
+  it('parse_querystring_payload, getPayload, contentType empty', function(done){
+    getHttp('', {
+      payload: '',
+      //_post: {name: 'thinkjs'},
+      getPayload: function(){
+        return Promise.resolve('name=thinkjs1')
+      }
+    }).then(function(http){
+      think.middleware('parse_querystring_payload', http).then(function(data){
+        assert.deepEqual(http._post, {name: 'thinkjs1'});
+        done();
+      }).catch(function(err){
+        console.log(err.stack)
+      })
+    })
+  })
   it('parse_querystring_payload, getPayload', function(done){
     getHttp('', {
       payload: '',