java后台返回的json字符串如下，如何取出其中的“客户名称”与“

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{"result": "['00','000000','交易处理成功']" ,"single":"[['客户号','7800071499','cifNo','','','','','',''],['证件类型','IC','idType1','','','','','',''],['证件号','500110198704151097','idNbr1','','','','','',''],['客户类别','I','custType','','','','','',''],['客户名称','基金油菜','custName1','','','','','',''],['客户级别','00','custGrade','','','','','',''],['性别','M','genCde','','','','','',''],['电子通讯','19961891801','elecAddr0100','','','','','',''],['地址1','家乐福2号','addr1','','','','','',''],['贵宾级别','00','vipCustCde','','','','','',''],['证件到期日','99991231','idExpryDt1','','','','','','']]"}

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前台是这么取，在后台如何取出来呀？

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比如阿里的fastjson (大致是这样，类型以及判断null自己调整一下)
JSONArray result = JSONArray.parseJSON((String)obj.get("single"));
String custna = (String)((JSONArray)result.get(4)).get(1);
String ylhm = (String)((JSONArray)result.get(7)).get(1);