js script标签发送跨域请求，没进入回调是什么原因？

Question

<script
type="text/javascript"
defer="defer"
src="http://localhost:8080/cqpt/ueditor/exec?action=config&callback=bd__editor__e3zw61"

</script>
使用script 标签发送 这样的一个请求
http://localhost:8080/cqpt/ueditor/exec?action=config&callback=bd__editor__e3zw61
Window对象上也挂载了着个方法

后台请求接受成功，并返回json格式的数据，

但是前台始终接受不到 返回的信息，这是什么情况？

使用的ueditor dojsonp的方法

返回的数据格式
{

"videoMaxSize":102400000,
"videoActionName":"uploadvideo",
"fileActionName":"uploadfile",
"fileManagerListPath":"/ueditor/jsp/upload/file/",
"imageCompressBorder":1600,
"imageManagerAllowFiles":[],
"imageManagerListPath":"/ueditor/jsp/upload/image/",
"fileMaxSize":51200000,
"fileManagerAllowFiles":[],
"fileManagerActionName":"listfile",
"snapscreenInsertAlign":"none",
"scrawlActionName":"uploadscrawl",
"videoFieldName":"upfile",
"imageCompressEnable":true,
"videoUrlPrefix":"",
"fileManagerUrlPrefix":"",
"catcherAllowFiles":[],
"imageManagerActionName":"listimage",
"snapscreenPathFormat":"/ueditor/jsp/upload/image/{yyyy}{mm}{dd}/{time}{rand:6}",
"scrawlPathFormat":"/ueditor/jsp/upload/image/{yyyy}{mm}{dd}/{time}{rand:6}",
"scrawlMaxSize":2048000,
"imageInsertAlign":"none",
"catcherPathFormat":"/ueditor/jsp/upload/image/{yyyy}{mm}{dd}/{time}{rand:6}",
"catcherMaxSize":2048000,
"snapscreenUrlPrefix":"",
"imagePathFormat":"/uploadfile/{yyyy}{mm}{dd}/{time}{rand:6}",
"imageManagerUrlPrefix":"",
"scrawlUrlPrefix":"",
"scrawlFieldName":"upfile",
"imageMaxSize":2048000,
"imageAllowFiles":[],
"snapscreenActionName":"uploadimage",
"catcherActionName":"catchimage",
"fileFieldName":"upfile",
"fileUrlPrefix":"",
"imageManagerInsertAlign":"none",
"catcherLocalDomain":[],
"filePathFormat":"/ueditor/jsp/upload/file/{yyyy}{mm}{dd}/{time}{rand:6}",
"videoPathFormat":"/ueditor/jsp/upload/video/{yyyy}{mm}{dd}/{time}{rand:6}",
"fileManagerListSize":20,
"imageActionName":"collect/uploadFile",
"imageFieldName":"upfile",
"imageUrlPrefix":"http://127.0.0.1:8080/cqpt",
"scrawlInsertAlign":"none",
"fileAllowFiles":[],
"catcherUrlPrefix":"",
"imageManagerListSize":20,
"catcherFieldName":"source",
"videoAllowFiles":[]

}

Answer 1

后端给你拼的字符串是啥，可以发出来吗，结构发出来就行
让后端拼这样一个字符串给前端

bd__editor__e3zw61(
  //你现在返回的对象 {巴啦巴拉一堆数据}
)

你的请求中是带了bd__editor__e3zw61这个名字的，让后端给你拼下就行了

Answer 2

是不是返回的东西有问题，就是返回的脚本里面只是声明了bd__editor__e3zw61这个函数但是并没有执行

Answer 3

信息不足。

1. 在可疑位置逐行console.log；
2. 查看开发者工具的网络标签，检查该请求的内容。