java字符串转二维数组，二维数组转List<List <String >>,List<List<String>>转二维数组
使用fastjson
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.TypeReference;
public static void main(String[] args) {
//定义二维数组字符串str1
String str1 ="[[\"1\",\"2\",\"3\"],[\"12\",\"3\",\"4\"]]";
//定义二维数组字符串str2
String str2 ="[[1,2,3],[12,3,4]]";
//将str1转换成二维数组parse1
String[][] parse1 = JSON.parseObject(str1, String[][].class);
//将str2转换成二维数组parse2
String[][] parse2 = JSON.parseObject(str2, String[][].class);
//将二维数组parse1转换为list
List<List<String>> lists1 = JSON.parseObject(JSON.toJSONString(parse1),new TypeReference<List<List<String>>>(){});
//将二维数组parse2转换为list
List<List<String>> lists2 = JSON.parseObject(JSON.toJSONString(parse1),new TypeReference<List<List<String>>>(){});
//将list1转换为二维数组
String[][] parse3 = JSON.parseObject(JSON.toJSONString(lists1), String[][].class);
//将list2转换为二维数组
String[][] parse4 = JSON.parseObject(JSON.toJSONString(lists2), String[][].class);
//打印数据
System.out.println(JSON.toJSONString(parse1));
System.out.println(JSON.toJSONString(parse2));
System.out.println(JSON.toJSONString(lists1));
System.out.println(JSON.toJSONString(lists2));
System.out.println(JSON.toJSONString(parse3));
System.out.println(JSON.toJSONString(parse4));
}
