我有一个云代码作业，应该启动一个httpRequest并存储一个类中收到的JSON。到目前为止，JSON是从httpResponse返回的，但JSON.parse()似乎无法正常工作。这是我的云代码工作的一部分：
var str = httpResponse.text;
console.log("news " + str);
var jsonNews = JSON.parse(str);
console.log(jsonNews);
以下是我的日志：
在console.log("news " + str);之后我有了这个：
news {"name":"News","count":71,"frequency":"Daily","version":3,
"newdata":true,"lastrunstatus":"success","thisversionstatus":"success",
"nextrun":"Wed Dec 23 2015 17:52:28 GMT+0000 (UTC)",
"thisversionrun":"Tue Dec 22 2015 17:52:28 GMT+0000 (UTC)",
"results":{"collection1":[{"date":"Dec-22:","headline":
{"href":"http://ghanafa.org/pages/gfa/201512/11174.php",
"text":"GFA holds Media & Marketing for Premier/... (truncated)
在我console.log(jsonNews);之后：
{"name":"News","count":71,"frequency":"Daily","version":3,
"newdata":true,"lastrunstatus":"success","thisversionstatus":"success",
"nextrun":"Wed Dec 23 2015 17:52:28 GMT+0000 (UTC)",
"thisversionrun":"Tue Dec 22 2015 17:52:28 GMT+0000 (UTC)",
"results":{"collection1":[{},{},{},{},{},{},{},{},{},{},{},{},{},{},
{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},
{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{},
{},{},{},{},{},{},{},{},{},{}],"collection2":[{}]}}
为什么我在JSON对象中丢失数据？它真的是云代码中的JSON.parse（）会导致问题吗？如果是这样，我该如何防止这种情况？