Json字符串转换为java对象

package jackson;
 
import java.io.IOException;
 
import org.codehaus.jackson.map.ObjectMapper;
 
public  class Json2Bean {
 
   public  static void main(String[] args) throws IOException{
 
"{\"name\":\"Morris\",\"age\":\"22\",\"sex\":\"男\"}";
      
      ObjectMapper mapper = new ObjectMapper();
      
      Person person = mapper.readValue(jsonStr, Person.class);
      
      System.out.println(person);
   }
 
}

package jackson;
 
import java.io.IOException;
import java.util.LinkedHashMap;
import java.util.List;
 
import org.codehaus.jackson.map.ObjectMapper;
 
public  class Json2List {
 
   public  static void main(String[] args) throws IOException {
 
"[{\"name\":\"Bob\",\"age\":\"33\",\"sex\":\"女\"},"
"{\"name\":\"Morris\",\"age\":\"22\",\"sex\":\"男\"}]";
      
      ObjectMapper mapper = new ObjectMapper();
      
      List<LinkedHashMap<String, String>> list = mapper.readValue(jsonStr, List.class);
      
      for (LinkedHashMap<String, String> linkedHashMap : list) {
        for (String key:linkedHashMap.keySet()) {
           System.out.println(key+":"+linkedHashMap.get(key));
        }
      }
   }
 
}

package jackson;
 
import java.io.IOException;
import java.util.Map;
import java.util.Set;
 
import org.codehaus.jackson.map.ObjectMapper;
 
public  class Json2Map {
 
   public  static void main(String[] args) throws IOException {
 
"{\"success\":true,\"A\":{\"address\": \"address2\",\"name\":\"haha2\",\"id\":2,\"email\":\"email2\"},"+
"\"B\":{\"address\":\"address\",\"name\":\"haha\",\"id\":1,\"email\":\"email\"}}";
      
      ObjectMapper mapper = new ObjectMapper();
      
      Map map = mapper.readValue(jsonStr, Map.class);
      
      Set keySet = map.keySet();
      
      for (Object key : keySet) {
        System.out.println(key+":"+map.get(key));
      }
 
   }
 
}

package jackson;
 
import java.io.IOException;
 
import org.codehaus.jackson.map.ObjectMapper;
 
public  class Json2Array {
 
   public  static void main(String[] args) throws IOException {
      
"[{\"name\":\"Bob\",\"age\":\"33\",\"sex\":\"女\"},"
"{\"name\":\"Morris\",\"age\":\"22\",\"sex\":\"男\"}]";
      
      ObjectMapper mapper = new ObjectMapper();
      
      Person[] persons = mapper.readValue(jsonStr, Person[].class);
      
      for (Person person : persons) {
        System.out.println(person);
      }
      
      
 
   }
 
}