/**
   * 一 JSON.parseObject() 單個(gè)對(duì)象 或map 大括號(hào){}
   * 二 JSON.parseArray() 多個(gè)對(duì)象 數(shù)組[] 復(fù)雜的要在類中定義類
   * 三 JSON.toJSONString() javaBean與JSON格式字符串之間的轉(zhuǎn)換
   *
   * 四 javaBean與json對(duì)象間的轉(zhuǎn)換使用：JSON.toJSON(obj)，然后使用強(qiáng)制類型轉(zhuǎn)換，JSONObject或者JSONArray
   */
  @Test
  public void testJson(){
    // {"name":"小紅", "age":21,"nation":"中國(guó)"} 格式要進(jìn)行格式化"\"
    String jsonPerson="{\"name\":\"小紅\", \"age\":21,\"nation\":\"中國(guó)\"}";
    System.out.println(jsonPerson);// {"name":"小紅", "age":21,"nation":"中國(guó)"}
    String s = JSON.toJSONString(jsonPerson); // "{\"name\":\"小紅\", \"age\":21,\"nation\":\"中國(guó)\"}"
    System.out.println(s);
    //[{"text":"內(nèi)存大小","value":"10M"},{"text":"顏色","value":"紅色"}]
    // json轉(zhuǎn)換為對(duì)象
    Person person = JSON.parseObject(jsonPerson,Person.class);
    System.out.println(person);
    System.out.println("=============================================");
    String jsonPerson2="[{\"name\":\"小紅\", \"age\":21,\"nation\":\"中國(guó)\"},{\"name\":\"小紅2\", \"age\":31,\"nation\":\"中國(guó)2\"}]";
    // Person person1 = JSON.parseObject(jsonPerson2, Person.class);
    // System.out.println(person1);  // com.alibaba.fastjson.JSONException: syntax error, expect {, actual [, pos 0
    List<Person> personList = JSON.parseArray(jsonPerson2, Person.class);
    System.out.println(personList);
    System.out.println("==============================================");


String result = "{\n" +
    "  \"success\":\"true\",\n" +
    " \n" +
    "  \"returnAddress\":\"123\"\n" +
    " \n}";
JSONObject jsonObject = JSON.parseObject(result);
System.out.println(jsonObject);
// {"success":"true","returnAddress":"123"}
Map map = JSON.parseObject(result, Map.class);
System.out.println(map);
// {success=true, returnAddress=123}
System.out.println("map取得的值時(shí)"+map.get("success"));
// map取得的值時(shí)true

System.out.println(jsonObject.toJSONString());
// {"success":"true","returnAddress":"123"}
Map jsonObject1 = (Map) JSON.parseObject(result);
System.out.println(jsonObject1);
// {"success":"true","returnAddress":"123"}
System.out.println("jsonObject1取得的值時(shí)"+jsonObject1.get("success"));
// jsonObject1取得的值時(shí)true
 } 

// 多重 javabean的方法是遍歷