Image Grails控制器：如何从字节数组渲染图像

我有byte array byteImg，但我想从byte array在控制器jpeg中渲染：

    def getSelfie = new HTTPBuilder()
    getSelfie.request(fullSelfieUrl, GET, JSON) { req ->
        headers.'X-DreamFactory-Session-Token' = session_id
        headers.'X-DreamFactory-Application-Name' = 'checkReg'
        response.success = { resp, reader ->
            assert resp.statusLine.statusCode == 200
            println "Get response: ${resp.statusLine}"
            println "Content-Type: ${resp.headers.'Content-Type'}"
            resp = reader as grails.converters.JSON

            String str = resp.toString()
            JSONObject jsonObject = new JSONObject(str)
            selfieRend = jsonObject.getString("selfie")
            byteImg = selfieRend.getBytes()

            render byteImg
            return byteImg
        }
        response.'404' = {
            println 'Information not found'
        }
    }

---

怎么做？非常感谢

我还没有测试过它，但根据这一点，它应该可以工作：

def getSelfie(){
  def http = new AsyncHTTPBuilder(
            poolSize : 4,
            uri : fullSelfieUrl,
            contentType : ContentType.JSON )

  def result = http.get() { resp, json -> json.selfie.bytes }

  while( !result.done ) Thread.sleep 1000

  def bytes = result.get()

  response.setHeader 'Content-disposition', "inline; filename=someName.jpg"
  response.setHeader 'Content-Type', 'image/jpg'
  response.outputStream.withStream{ it << bytes }
}

def getSelfie（）{
def http=新的AsyncHTTPBuilder(
游泳池规模：4，
uri:fullSelfieUrl，
contentType:contentType.JSON）
def result=http.get（）{resp，json->json.selfie.bytes}
而（！result.done）Thread.sleep 1000
def bytes=result.get（）
response.setHeader'Content disposition'，“inline；filename=someName.jpg”
response.setHeader“内容类型”、“图像/jpg”
response.outputStream.withStream{这是驻留在控制器操作中的代码吗？是的，是控制器操作中的代码