1、写作背景

总想走捷径的人，往往因找不到捷径而固步自封，一步不前！

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2、参考网址

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3、学习目的

• 记录JSON读取工具类

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4、核心操作

1）内存分页工具

SpringBoot会存在一种情况，将自己注册到Eureka，有时候一下本地File的读取会失败

@Service // 使用的FastJson
public class JsonReadUtil {
    public List<UserModel> getAppList() throws IOException {
        ClassPathResource resource = new ClassPathResource("/mock/mock.json");
        File file = resource.getFile();
        String jsonResult = jsonRead(file);
        JSONObject jsonObject = JSONObject.parseObject(jsonResult);
        JSONArray infBody = jsonObject.getJSONArray("infBody");
        List<UserModel> dataList = infBody.toJavaList(UserModel.class);
        return dataList;
    }

    private String jsonRead(File file){
        StringBuilder builder = new StringBuilder();
        try (Scanner scanner = new Scanner(file,"utf-8")){
            while (scanner.hasNextLine()){
                builder.append(scanner.nextLine());
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        return builder.toString();
    }
}

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5、课后习题

1）XXXX

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