TOC

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);

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