java 将List< Map< String, Object > > dataListSE转字符串

可以使用JSON库将List<Map<String, Object>>转换为字符串。以下是使用Jackson库的示例代码：

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class Example {
    public static void main(String[] args) throws JsonProcessingException {
        List<Map<String, Object>> dataListSE = new ArrayList<>();
        for (int i = 0; i < 5; i++) {
            Map<String, Object> map = new HashMap<>();
            map.put("a", i);
            map.put("b", i);
            dataListSE.add(map);
        }
        ObjectMapper objectMapper = new ObjectMapper();
        String jsonString = objectMapper.writeValueAsString(dataListSE);
        System.out.println(jsonString);
    }
}

输出结果为：

[{"a":0,"b":0},{"a":1,"b":1},{"a":2,"b":2},{"a":3,"b":3},{"a":4,"b":4}]