读取json格式文件，将其格式化输出

曾经终败给现在 2022-10-23 03:56 211阅读 0赞

使用fastjson

@Test
        public void testdsa() throws IOException {
            /*JSONArray jsonArray = new JSONArray();
            JSONObject jsonObject = new JSONObject();
            jsonObject.put("1", "222");
            JSONObject jsonObject2 = new JSONObject();
            jsonObject2.put("1111", "44444");
            jsonArray.add(jsonObject);
            jsonArray.add(jsonObject2);*/
            BufferedInputStream bis = null;
            StringBuilder sb = new StringBuilder();
            byte[] b = new byte[1024 * 1024];
            try {
                bis = new BufferedInputStream(new FileInputStream(new File("a - 副本.txt")));
                int len = -1;
                while ((len = bis.read(b)) != -1) {
                     sb.append(new String(b, 0, len));
                }
                System.out.println("jie");
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                if (bis != null)
                    bis.close();
            }
            BufferedWriter bw = null;
            try {
                bw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(new File("out01.txt"))));
                JSONObject jsonObject = JSONObject.parseObject(sb.toString());
                JSONObject content = jsonObject.getJSONObject("content");
                if (content != null) {
                    JSONArray etOutputs = content.getJSONArray("etOutputs");
    
                    for (int i = 0; i < etOutputs.size(); i++) {
                        JSONObject obj = etOutputs.getJSONObject(i);
                        String pretty = JSON.toJSONString(obj, SerializerFeature.PrettyFormat, SerializerFeature.WriteMapNullValue,
                                SerializerFeature.WriteDateUseDateFormat);
                        bw.write(pretty);
                        bw.newLine();
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                if (bw != null) {
                    bw.close();
                }
            }
        }