https://github.com/lightweight-component/aj-json

Small JSON parser & serializer
https://github.com/lightweight-component/aj-json

java-json json

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Small JSON parser & serializer

• Host: GitHub
• URL: https://github.com/lightweight-component/aj-json
• Owner: lightweight-component
• License: apache-2.0
• Created: 2025-06-17T07:20:13.000Z (9 months ago)
• Default Branch: main
• Last Pushed: 2025-06-17T07:31:48.000Z (9 months ago)
• Last Synced: 2025-08-20T21:54:41.154Z (7 months ago)
• Topics: java-json, json
• Language: Java
• Homepage:
• Size: 23.4 KB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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# Small JSON parser & serializer 小型 JSON 解释器

小型 JSON 解析器，实现 JSON 与 Map/List 互换，是了解 JSON 解析的好例子。

This is a lightweight JSON parser that implements bidirectional conversion between JSON strings and Java data structures such as Map and List. 

The implementation is simple yet powerful, making it an excellent example for learning how JSON parsing works under the hood.

## Source code

[Github](https://github.com/lightweight-component/aj-json) | [Gitcode](https://gitcode.com/lightweight-component/aj-json)

# Install

Requires Java 1.8+, Maven Snippets:

```xml

    com.ajaxjs

    aj-json

    1.4

```

# Usage

```java

// Java to JSON

Object obj = true;

String json = ConvertToJson.toJson(obj);

assertEquals("true", json);

obj = 123;

json = ConvertToJson.toJson(obj);

assertEquals("123", json);

obj = 100000000000000001L;

json = ConvertToJson.toJson(obj);

assertEquals("\"100000000000000001\"", json);

obj = 99999L;

json = ConvertToJson.toJson(obj);

assertEquals("99999", json);

obj = "hello";

json = ConvertToJson.toJson(obj);

assertEquals("\"hello\"", json);

Map map = new HashMap();

map.put("name", "John");

map.put("age", 30);

json = ConvertToJson.toJson(map);

assertEquals("{\"name\":\"John\",\"age\":30}", json);   

// List to JSON

List list = new ArrayList();

list.add(1);

list.add(2);

list.add(3);

String json = ConvertToJson.list2Json(list);

assertEquals("[1, 2, 3]", json);

```