json java 转换

需要jar包

commons-beanutils-1.7.0.jar
ezmorph-1.0.3.jar
json-lib-2.1.jar

public class Test {
 public static void main(String[] args) {
  //json to bean
  String json = "{'value':'xx','row':1,'col':1}";
  JSONObject jsonObject = JSONObject.fromObject(json);
  JsonBean2 bean = (JsonBean2) JSONObject.toBean(jsonObject,
    JsonBean2.class);
  System.out.println(bean.getCol());

  //1、boolArray to json
  boolean[] boolArray = new boolean[] { true, false, true };
  JSONArray jsonArray1 = JSONArray.fromObject(boolArray);
  System.out.println(jsonArray1);

  //3、strList to json
  List strList = new ArrayList();
  strList.add("first");
  strList.add("second");
  JSONArray jsonArray2 = JSONArray.fromObject(strList);
  System.out.println(jsonArray2);

  //4、strArray to json
  String strArray = "['json','is','easy']";
  JSONArray jsonArray3 = JSONArray.fromObject(strArray);
  System.out.println(jsonArray3);

  //2、objList to json
  List<JsonBean2> objList = new ArrayList<JsonBean2>();
  JsonBean2 jb1 = new JsonBean2();
  jb1.setCol(1);
  jb1.setRow(1);
  jb1.setValue("xx");

  JsonBean2 jb2 = new JsonBean2();
  jb2.setCol(2);
  jb2.setRow(2);
  jb2.setValue("");

  objList.add(jb1);
  objList.add(jb2);

  JSONArray ja = JSONArray.fromObject(objList);
  System.out.println(ja.toString());

  //5、Objmap to json
  Map<Integer, JsonBean2> map = new HashMap<Integer, JsonBean2>();
  map.put(jb1.getCol(), jb1);
  map.put(jb2.getCol(), jb2);
  JSONObject jsonMapObj = JSONObject.fromObject(map);
  System.out.println(jsonMapObj);

  //6、StringMap to json
  Map map1 = new HashMap();
  map1.put("name", "json");
  map1.put("bool", Boolean.TRUE);
  map1.put("int", new Integer(1));
  map1.put("arr", new String[] { "a", "b" });
  map1.put("func", "function(i){ return this.arr[i]; }");
  JSONObject jsonMap = JSONObject.fromObject(map1);
  System.out.println(jsonMap);

  JSONObject jsonMap1 = JSONObject.fromObject(map1);
  jsonMap1.put("jsonMap1", map1);
  System.out.println(jsonMap1);
  
  String json1 = "{'jsonMap1':[{'col':1,'value':'xx','row':1},{'col':2,'value':'','row':2}]}";
  JSONObject jsonObject2 = JSONObject.fromObject(json1);
  JSONArray array = jsonObject2.getJSONArray("jsonMap1");
  List<MorphDynaBean> list = JSONArray.toList(array);
  System.out.println(list.get(0).get("col"));
  try {
   PropertyUtils.copyProperties(list.get(0), jb2);
  } catch (IllegalAccessException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (InvocationTargetException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (NoSuchMethodException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  System.out.println(jb2.getCol());
  System.out.println("value: "+jb2.getValue());
 }
}

//json to list
String jsonstr = "{'users':[{'id':'1','name':'user1'},{'id':'2,'name':'user2'}]}"
JSONObject jsonObject = JSONObject.fromObject(jsonstr );
		JSONArray jsonArray = jsonObject.getJSONArray("users");
		List<MorphDynaBean> list = jsonArray.toList(jsonArray);
		for (MorphDynaBean morphDynaBean : list) {
System.out.println((Integer) morphDynaBean.get("id"));
System.out.println((String) morphDynaBean.get("name"));
		}