Java string转fastjson时遇到的问题，无法解析

[{"extValue":"{"statValue":[{"id":"金额(元)","label":"总金额(元)","num":"8967.15","upper":""}],"componentName":"TableField"}","name":"明细","value":"[{"rowValue":[{"label":"金额(元)","value":"6358.85","key":"金额(元)"},{"label":"类别","value":"测试数据","key":"类别"},{"label":"明细","value":"测试1","key":"明细"}]},{"rowValue":[{"label":"金额(元)","value":"12.45","key":"金额(元)"},{"label":"类别","value":"测试2","key":"类别"},{"label":"明细","value":"测试2","key":"明细"}]},{"rowValue":[{"label":"金额(元)","value":"2595.85","key":"金额(元)"},{"label":"类别","value":"测试数据3","key":"类别"},{"label":"明细","value":"这是一个测试数据3，测试","key":"明细"}]}]"},{"name":"图片","value":"["lADPBbCc16DzL6TMhMyE_132_132.jpg"]"},{"name":"附件","value":"null"}]

在使用fastjson转换时，遇到的问题，这条json字符串没办法直接转换成JSONArray，因为"extValue"的值被""包裹着，有大神知道这个该怎么处理么？急求，感谢！！！

你这json字符串本身就是错的

在线格式化下这段json字符串，报错了。

第1行解析错误:
[{"extValue":"{"statValue":[{"id":"金
----------------^
期望是 'EOF', '}', ':', ',', ']'

都知道是哪里的错了，“去掉不就行了吗