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  • java读取本地json数组并解析

    1.本地json位置

    2,json数据

    {
    "garbages":
    [
    {"id":"/m/011k07","ename":"Football","cname":"足球","gtype":"可回收垃圾"},
    {"id":"/m/012xff","ename":"Toothbrush","cname":"牙刷","gtype":"有害垃圾"}
    ]
    }

    3依赖jar

    <!-- json读取支持包 -->
    <dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.47</version>
    </dependency>

    4.测试代码

    /**
    * 读取json文件,返回json串
    * @param fileName
    * @return
    */
    public static String readJsonFile(String fileName) {
    String jsonStr = "";
    try {
    File jsonFile = new File(fileName);
    FileReader fileReader = new FileReader(jsonFile);

    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);
    }
    fileReader.close();
    reader.close();
    jsonStr = sb.toString();
    return jsonStr;
    } catch (IOException e) {
    e.printStackTrace();
    return null;
    }
    }

    /**
    *解析json串
    * @param args
    * @throws Exception
    */
    public static void main(String[] args) throws Exception{
    String path = GetJson.class.getClassLoader().getResource("garbage.json").getPath();
    String s = readJsonFile(path);
    JSONObject jobj = JSON.parseObject(s);
    JSONArray garbages = jobj.getJSONArray("garbages");
    for (int i = 0; i < garbages.size(); i++) {
    JSONObject key1 = (JSONObject)garbages.get(i);
    String id = (String)key1.get("id");
    String ename = (String)key1.get("ename");
    String cname = (String)key1.get("cname");
    String gtype = (String)key1.get("gtype");
    System.out.println(id);
    System.out.println(ename);
    System.out.println(cname);
    System.out.println(gtype);
    }
    }

    }

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  • 原文地址:https://www.cnblogs.com/guangxiang/p/11286572.html
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