从指定路径获取json文件，解析所需内容

package com.bcj.Test;

import com.google.gson.*;

import java.io.*;
import java.net.MalformedURLException;
import java.net.URL;

public class Test {

    public static void main(String[] args) throws IOException {


        JsonParser parse =new JsonParser();  //创建json解析器
        try {
            JsonObject json=(JsonObject) parse.parse(new FileReader("src/info.json"));  //创建jsonObject对象

            JsonObject result = json.get("showapi_res_body").getAsJsonObject();

            if (result.get("img") != null){//如果Json返回的img参数不为空，就把图片下载到本地
                String url = result.get("img").getAsString();
                String path="F:/test/pic.jpg";
                downloadPicture(url,path);
                System.out.println("Json文件中存在图片，图片下载成功，请到F:/test查看");
            }

            System.out.println("商品分类:"+result.get("goodsType").getAsString());
            System.out.println("原产地:"+result.get("ycg").getAsString());
            System.out.println("商标/品牌名称:"+result.get("trademark").getAsString());
            System.out.println("厂商:"+result.get("manuName").getAsString());
            System.out.println("规格:"+result.get("spec").getAsString());


        } catch (JsonIOException e) {
            e.printStackTrace();
        } catch (JsonSyntaxException e) {
            e.printStackTrace();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }

        }

    private static void downloadPicture(String urlList,String path) {
        URL url = null;
        try {
            url = new URL(urlList);
            DataInputStream dataInputStream = new DataInputStream(url.openStream());

            FileOutputStream fileOutputStream = new FileOutputStream(new File(path));
            ByteArrayOutputStream output = new ByteArrayOutputStream();

            byte[] buffer = new byte[1024];
            int length;

            while ((length = dataInputStream.read(buffer)) > 0) {
                output.write(buffer, 0, length);
            }
            fileOutputStream.write(output.toByteArray());
            dataInputStream.close();
            fileOutputStream.close();
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    }