JSONObject jsonObjectRoot=new JSONObject(str);抛出异常

String str="{\"tasks\":[{\"Icc\":\"库停\",\"Occ\":\"库停\",\"Cz\":\"CRH2A-4044\",\"Gd\":\"J2/2\",\"Wsign\":\"二级修(A、L)\n\",\"Lwdays\":-1,\"Wteam\":-1,\"Ddfinish\":\"\",\"Wt\":null},{\"Icc\":\"库停\",\"Occ\":\"库停\",\"Cz\":\"CRH2A-4044\",\"Gd\":\"J2/2\",\"Wsign\":\"一级修\",\"Lwdays\":-1,\"Wteam\":-1,\"Ddfinish\":\"23:59:59.9999999\",\"Wt\":{\"Num\":2,\"Num1\":\"任洋洋\",\"Num2\":\"曾辉\",\"Num3\":\"刘枢\",\"Num4\":\"韦云杰\",\"Num0\":\"魏炎文\"}},{\"Icc\":\"0D3764\",\"Occ\":\"库停\",\"Cz\":\"CRH2A-2376\",\"Gd\":\"J4/2\",\"Wsign\":\"二级修(A、D、L)\",\"Lwdays\":-1,\"Wteam\":-1,\"Ddfinish\":\"\",\"Wt\":null},{\"Icc\":\"0D3764\",\"Occ\":\"库停\",\"Cz\":\"CRH2A-2376\",\"Gd\":\"J4/2\",\"Wsign\":\"一级修\",\"Lwdays\":-1,\"Wteam\":-1,\"Ddfinish\":\"23:59:59.9999999\",\"Wt\":{\"Num\":3,\"Num1\":\"张元耀\",\"Num2\":\"周永钊\",\"Num3\":\"杨越文\",\"Num4\":\"张旭峰\",\"Num0\":\"蒋涛\"}},{\"Icc\":\"库停\",\"Occ\":\"库停\",\"Cz\":\"CRH2A-4120\",\"Gd\":\"J3/2\",\"Wsign\":\"二级修(A、L)+秋整\n\",\"Lwdays\":-1,\"Wteam\":-1,\"Ddfinish\":\"\",\"Wt\":null},{\"Icc\":\"库停\",\"Occ\":\"库停\",\"Cz\":\"CRH2A-2432\",\"Gd\":\"J1/2\",\"Wsign\":\"秋整\",\"Lwdays\":-1,\"Wteam\":-1,\"Ddfinish\":\"\",\"Wt\":null},{\"Icc\":\"库停\",\"Occ\":\"库停\",\"Cz\":\"CRH2A-2306\",\"Gd\":\"J6/1\",\"Wsign\":\"TS2\",\"Lwdays\":-1,\"Wteam\":-1,\"Ddfinish\":\"\",\"Wt\":null},{\"Icc\":\"库停\",\"Occ\":\"库停\",\"Cz\":\"CRH2A-2367\",\"Gd\":\"J9\",\"Wsign\":\"E\",\"Lwdays\":-1,\"Wteam\":-1,\"Ddfinish\":\"\",\"Wt\":null},{\"Icc\":\"库停\",\"Occ\":\"库停\",\"Cz\":\"CRH2A-2400\",\"Gd\":\"J8\",\"Wsign\":\"外皮清洗\",\"Lwdays\":-1,\"Wteam\":-1,\"Ddfinish\":\"\",\"Wt\":null}]}"
JSONObject jsonObjectRoot=new JSONObject(str);//正常
但是在okhttputils的StringCallback继承类的重载方法onResponse如下获取同样上面的字符串response时抛异常
@Override
public void onResponse(String response, int id) {
JSONObject jsonObjectRoot=new JSONObject(response);//抛异常(其他正常就这里)
}

查查各式,特殊字符,