向服务器发出AJAX请求时出现错误代码415

Question

I am sending an Ajax request to an endpoint on my server:

Nothing bookSoldOut(boolean sold,
                    List<Long> books)
                        throws ErrorResponseException

... Where I am expecting the parameters: sold and books

In my ExtJS controller I am making a call in a function as follows:

Ext.Ajax.request({
    url: '/book/price/bookSoldOut',
    method: 'POST',
    params: {
        'sold': true,
        'books': books,          
    },
    success: function(responseObject) {

    }
});

But I am getting an error code 415 - what I'm doing wrong?

Answer 1

If books is a composite-type (array/object etc.) then it's highly likely that you need to serialise the data in some way or else as a result of the object's toString being invoked, [object object] will be what is actually being sent to the server. Typically you might use JSON encoded data in this case:

Ext.Ajax.request({
    url: '/book/price/bookSoldOut',
    method: 'POST',
    params: {
        sold: true,
        books: Ext.encode( books )  // <-- serialise (as string)
                                    // note that some browsers will trip up
                                    // over the trailing comma you had here
    },
    success: function(responseObject) {

    }
});

If there is still an error after this change then something is miss-configured on the server side.