Gson解析 json 实例

 

1. 将json字符串转化成JavaBean对象
2. Person person = new Person("1","gson",1);
3. Gson gson = new Gson();
4. //这里将javabean转化成json字符串
5. String jsonString = gson.toJson(person);
6. System.out.println(jsonString);
7. //这里将json字符串转化成javabean对象,
8. person = gson.fromJson(jsonString,Person.class);
9. 2

   将json字符串转化成List<JavaBean>对象

   Person person1 = new Person("1","gson1",1);

   Person person2 = new Person("2","gson2",2);

   List<Person> persons = new ArrayList<Person>();

   persons.add(person1);

   persons.add(person2);

   Gson gson = new Gson();

   //这里将lsit<javabean>转化成json字符串

   String jsonString = gson.toJson(persons);

   //解析json字符串

   List<Person> persons2 = gson.fromJson(jsonString, new TypeToken<List<Person>>(){}.getType());

10. 3

    将json字符串转化成List<String>对象

    List<String> list = new ArrayList<String>();

    list.add("gson1");

    list.add("gson2");

    list.add("gson3");

    Gson gson = new Gson();

    String jsonString = gson.toJson(list);

    System.out.println("json字符串:"+jsonString);

    //解析json字符串

    List<String> list2 = gson.fromJson(jsonString, new TypeToken<List<String>>(){}.getType());

11. 4

    将json字符串转化成List<Map<String,Object>>对象

    Map<String,Object> map = new HashMap<String,Object>();

    map.put("key1", "value1");

    map.put("key2", "value2");

    Map<String,Object> map2 = new HashMap<String,Object>();

    map2.put("key1", 1);

    map2.put("key2", 2);

    List<Map<String,Object>> list = new ArrayList<Map<String,Object>>();

    list.add(map);

    list.add(map2);

    Gson gson =  new Gson();

    String jsonString = gson.toJson(list);

    System.out.println("json字符串:"+jsonString);

    //解析json字符串

    List<Map<String,Object>> list2 = gson.fromJson(jsonString, new TypeToken<List<Map<String,Object>>>(){}.getType());

12. 5

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    pan.baidu.com/s/1jG5HQpK