java中JSON字符串转成List<Map>

可以使用Jackson库来实现JSON字符串转成List<Map>，具体代码如下：

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;

import java.io.IOException;
import java.util.List;
import java.util.Map;

public class JsonUtils {

    private static final ObjectMapper mapper = new ObjectMapper();

    public static List<Map<String, Object>> jsonToListMap(String jsonStr) {
        try {
            return mapper.readValue(jsonStr, new TypeReference<List<Map<String, Object>>>() {});
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }
}

使用示例：

String jsonStr = "[{\"id\":1,\"name\":\"Tom\"},{\"id\":2,\"name\":\"Jerry\"}]";
List<Map<String, Object>> listMap = JsonUtils.jsonToListMap(jsonStr);
for (Map<String, Object> map : listMap) {
    System.out.println(map.get("id") + " " + map.get("name"));
}

输出结果：

1 Tom
2 Jerry