通过URL传json数据，I方法获取有坑
通过URL传json数据（http://www.360.com/admin/survey/look?title=zxzxxz&question_type=5&answer=[{"title":"qqqqqqqq","question_type":4,"answer":"qqqqqqqq"},{"title":"bbbbbbbbb","question_type":4,"answer":"bbbbbbbbb"}]），I方法获取有坑，通过I方法获取到的数据使用json_decode解析出来为空，只能用$_GET去获取值
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