前言

记录下SpringBoot读取JSON文件的方式

具体实现

• JsonUtil.java

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.io.Reader;

public class JsonUtil {

    /**
     * 读取JSON文件转换为字符串
     * @param filePath
     * @return
     */
    public static String readJsonFile(String filePath) {
        String jsonStr = "";
        try {
            File jsonFile = new File(filePath);
            Reader reader = new InputStreamReader(new FileInputStream(jsonFile), "utf-8");
            int ch = 0;
            StringBuffer sb = new StringBuffer();
            while ((ch = reader.read()) != -1) {
                sb.append((char) ch);
            }
            reader.close();
            jsonStr = sb.toString();
            return jsonStr;
        } catch (Exception ex) {
            ex.printStackTrace();
            return null;
        }
    }

}

转换例子

• 借助fastjson

<!-- fastjson -->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.48</version>
</dependency>

• 对象形式读取转换

String jsonStr = JsonUtil.readJsonFile("src/main/resources/json/xxx.json");
JSONObject result = JSONObject.parseObject(jsonStr);

• 数组形式读取转换

String jsonStr = JsonUtil.readJsonFile("src/main/resources/json/xxx.json");
JSONArray result = JSONObject.parseArray(jsonStr);

SpringBoot - 读取JSON文件