利用fastjson解析大文本JSON

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public static void readBigJson(){        String json = "{" +                "\"array\": [1,2,3]," +                "\"arraylist\": [" +                    "{\"a\": \"b\"," +                        "\"c\": \"d\"," +                        "\"e\": \"f\"}," +                    "{\"a\": \"b\"," +                        "\"c\": \"d\"," +                        "\"e\": \"f\"}," +                    "{\"a\": \"b\"," +                        "\"c\": \"d\"," +                        "\"e\": \"f\"}  " +                    "]," +                "\"object\": {" +                    "\"a\": \"b\"," +                    "\"c\": \"d\"," +                    "\"e\": \"f\"}," +                "\"string\": \"Hello World\"" +                "}";    // 如果json数据以形式保存在文件中，用FileReader进行流读取，path为json数据文件路径。    // JSONReader reader = new JSONReader(new FileReader(path));    // 为了直观，方便运行，就用StringReader做示例！    JSONReader reader = new JSONReader(new StringReader(json));    reader.startObject();    System.out.print("start read json with fastjson");    while (reader.hasNext())    {        String key = reader.readString();        System.out.println("key " + key);        if (key.equals("array"))        {            reader.startArray();            System.out.println("start " + key);            while (reader.hasNext())            {                String item = reader.readString();                System.out.println(item);            }            reader.endArray();            System.out.println("end " + key);        }        else if (key.equals("arraylist"))        {            reader.startArray();            System.out.println("start " + key);            while (reader.hasNext())            {                reader.startObject();                System.out.println("start arraylist item");                while (reader.hasNext())                {                    String arrayListItemKey = reader.readString();                    String arrayListItemValue = reader.readObject().toString();                    System.out.print("key " + arrayListItemKey);                    System.out.println(":value " + arrayListItemValue);                }                reader.endObject();                System.out.println("end arraylist item");            }            reader.endArray();            System.out.println("end " + key);        }        else if (key.equals("object"))        {            reader.startObject();            System.out.println("start object item");            while (reader.hasNext())            {                String objectKey = reader.readString();                String objectValue = reader.readObject().toString();                System.out.print("key " + objectKey);                System.out.println(":value " + objectValue);            }            reader.endObject();            System.out.println("end object item");        }        else if (key.equals("string"))        {            System.out.println("start string");            String value = reader.readObject().toString();            System.out.println("value " + value);            System.out.println("end string");        }    }    reader.endObject();    System.out.println("start fastjson");}
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