fastJson 详解

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public class FastJson {    static class Person{        private String id;        private String name;        private int age;        public Person(){        }        public Person(String id, String name, int age) {            this.id = id;            this.name = name;            this.age = age;        }        public String getId() {            return id;        }        public void setId(String id) {            this.id = id;        }        public String getName() {            return name;        }        public void setName(String name) {            this.name = name;        }        public int getAge() {            return age;        }        public void setAge(int age) {            this.age = age;        }    }    public static void main(String[] args) {        method1();        method2();        method3();        method4();    }    static void method1(){        System.out.println("javaBean转化示例开始——————————————");        Person person = new Person("1", "fastJson", 1);        System.out.println(person);        //这里将javabean转化为json字符串        String jsonString = JSON.toJSONString(person);        System.out.println(jsonString);        //这里将json字符串转化为javabean对象         person = JSON.parseObject(jsonString, Person.class);        System.out.println(person.toString());        System.out.println("javabean转化示例结束");    }    static void method2(){        System.out.println("List<javabean>转化示例开始");        Person person1 = new Person("1", "fastJson1", 1);        Person person2 = new Person("2", "fastJson2", 2);        ArrayList<Person> persons = new ArrayList<>();        persons.add(person1);        persons.add(person2);        /*转化为json字符串*/        System.out.println("转化为json字符串");        String jsonString = JSON.toJSONString(persons);        System.out.println("json字符串"+jsonString);        //json字符串转化为list<javabean>对象        List<Person> person = JSON.parseArray(jsonString, Person.class);        System.out.println("输出整个对象"+ person);        System.out.println("person1对象"+person.get(0).toString());        System.out.println("person2对象"+person.get(1).toString());    }    static void method3(){        System.out.println("List<String>转化开始");        ArrayList<String> list = new ArrayList<>();        list.add("fastjson1");        list.add("fastjson2");        list.add("fastjson3");        String jsonString = JSON.toJSONString(list);        System.out.println("输出json字符串"+jsonString);        //解析json        JSON.parseObject(jsonString,new TypeReference<List<String>>(){});        System.out.println(list.get(0)+":"+list.get(1)+":"+list.get(2));        System.out.println("List<String>转化示例结束");    }    static void method4(){        System.out.println("list<map<String,Object>>转化正式开始");        HashMap<String, Object> map = new HashMap<String,Object>();        map.put("key1","value1");        map.put("key2","value2");        HashMap<String, Object> map2 = new HashMap<String,Object>();        map.put("key1",1);        map.put("key2",11);        ArrayList<Map<String, Object>> list = new ArrayList<Map<String, Object>>();        list.add(map);        list.add(map2);        String jsonString = JSON.toJSONString(list);        System.out.println("json字符串"+jsonString);        //解析json字符串        List<Map<String, Object>> list2 = JSON.parseObject(jsonString, new TypeReference<List<Map<String, Object>>>() {        });        System.out.println("map的key1值"+list2.get(0).get("key1"));        System.out.println("map的key2值"+list2.get(0).get("key2"));        System.out.println("ma2p的key1值"+list2.get(1).get("key1"));        System.out.println("map2的key2值"+list2.get(1).get("key2"));    }}
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