使用fastJSON解析HashMap中的資料

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import java.util.HashMap;   import java.util.Iterator;   import java.util.Map;   import java.util.Map.Entry;   import java.util.Set;     import com.alibaba.fastjson.JSON;   import com.alibaba.fastjson.TypeReference;      public class Demo {      public static void main(String[] args) {          Map<String, Student> map = new HashMap<String, Student>();          Student stu1 = new Student("1", "莎拉波娃");          Student stu2 = new Student("2", "布沙爾");          Student stu3 = new Student("3", "哈勒普");              map.put("00011", stu1);          map.put("00012", stu2);          map.put("00013", stu3);              objectToStr(map);          String str = "{‘00011‘:{‘id‘:‘1‘,‘name‘:‘silei‘},‘00012‘:{‘id‘:‘2‘,‘name‘:‘布沙爾‘},‘00013‘:{‘id‘:‘3‘,‘name‘:‘哈勒普‘}}";          strToObject(str);      }          public static void strToObject(String str) {          Map<String, Student> map = (Map<String, Student>) JSON.parseObject(str, new TypeReference<Map<String, Student>>() {          });          Set<Entry<String, Student>> m = map.entrySet();          Iterator<Entry<String, Student>> it = m.iterator();          while (it.hasNext()) {              Entry<String, Student> en = it.next();              String id = en.getKey();              Student stu = en.getValue();              System.out.println(stu.getId() + "===" + stu.getName());          }          System.out.println(map.size());      }        // 把對象轉換成JSON字串      public static void objectToStr(Map map) {          String str = JSON.toJSONString(map);          System.out.println(str);      }  }  

 

使用fastJSON解析HashMap中的資料