Map类型的Json格式

示例代码：

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Map<String, Object> map = new HashMap<>();<br>// boolean 类型 map.put("boolean", true);<br>// String 类型 map.put("string", "abc");<br>// int 类型 map.put("int", 123);<br>// 数组类型 map.put("array", new int[]{1,2,3});<br>// map 类型 Map<String, Object> subMap = new HashMap<>(); subMap.put("key1", "value1"); subMap.put("key2", "value2"); map.put("map", subMap);    System.out.println(JSON.toJSONString(map, true));

结果:

{
    "boolean":true,
    "string":"abc",
    "array":[1,2,3],
    "map":{
        "key1":"value1",
        "key2":"value2"
    },
    "int":123
}