wx.request({

            url: 'http://192.168.0.103:8080/cg/'+p.url, 

            data: p.data,  

            contentType: "application/x-www-form-urlencoded",

            header: { 

                'content-type': 'application/x-www-form-urlencoded;charset=utf-8' // 默认值

            }, 

            success(res) {

                console.log("返回:"+JSON.stringify(res))

                callback(res);

            }

        })

返回结果中带有中文，显示????。后台response.getCharacterEncoding() 是utf-8,

打印返回res

{"data":"????","header":{"Content-Type":"text/plain;charset=ISO-8859-1","Content-Length":"4","Date":"Fri, 21 May 2021 05:35:52 GMT"},"statusCode":200,"cookies":[],"errMsg":"request:ok"}

求大神给出解决方法。