JSON-json-lib-工具类

Maven依赖：

<dependency>
            <groupId>net.sf.json-lib</groupId>
            <artifactId>json-lib</artifactId>
            <version>2.4</version>
            <classifier>jdk15</classifier>
 </dependency>

import net.sf.ezmorph.object.DateMorpher;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import net.sf.json.JsonConfig;
import net.sf.json.util.JSONUtils;
import net.sf.json.util.PropertyFilter;

import java.util.*;

public class JSONUtil {

/////////////////////////////////////////////////Object2JSON///////////////////////////////////////////////////

    public static JSONObject str2JSONObject(String str) {
        return JSONObject.fromObject(str);
    }

    public static JSONArray javaBean2JSONArray(Object bean) {
        return JSONArray.fromObject(bean);
    }

    public static JSONObject javaBean2JSONObject(Object bean) {
        return JSONObject.fromObject(bean);
    }

    public static JSONArray list2JSONArray(List lst) {

        JsonConfig config = new JsonConfig();
        config.setJsonPropertyFilter(new PropertyFilter() {
            public boolean apply(Object arg0, String arg1, Object arg2) {
                if (arg1.equals("card") ||arg1.equals("fans")) {
                    return true;
                } else {
                    return false;
                }
            }
        });


        return JSONArray.fromObject(lst);
    }

    public static JSONObject list2JSONObject(List<Object> lst) {
        JSONObject jsonObj = new JSONObject();
        jsonObj.put("objs", lst);
        return jsonObj;
    }

    public static JSONObject map2JSONObject(Map map) {
        return JSONObject.fromObject(map);
    }

    public static JSONArray map2JSONArray(Map map) {
        return JSONArray.fromObject(map);
    }


/////////////////////////////////////////////////JSON2Object///////////////////////////////////////////////////

    public static Object jSONObject2javaBean(JSONObject jsonObject, Class cls) {

        String[] dateFormats = new String[]{"yyyy-MM-dd"};
        JSONUtils.getMorpherRegistry().registerMorpher(
                new DateMorpher(dateFormats));

        return JSONObject.toBean(jsonObject, cls);
    }

    public static List jSONArray2List(JSONArray jsArray) {
        List list = null;
        for (int i = 0; i < jsArray.size(); i++) {
            JSONObject jsobj = jsArray.getJSONObject(i);
            list.add(jsobj);
        }
        return list;
    }

    public static List<Map> jsonArray2MapList(Object obj) {
        List<Map> lst = new ArrayList<Map>();

        JSONArray jsArray = JSONArray.fromObject(obj);
        Object[] array = jsArray.toArray();
        for (int i = 0; i < array.length; i++) {
            Map<String, Object> map = jSONObject2Map(array[i].toString());
            lst.add(map);
        }
        return lst;
    }

    public static Map jSONObject2Map(Object obj) {
        JSONObject js = JSONObject.fromObject(obj);
        Iterator ite = js.keys();
        Map<String, Object> map = new HashMap<String, Object>();
        while (ite.hasNext()) {
            Object o = ite.next();
            Object oo = js.get(o.toString());
            if (oo instanceof JSONObject) {
                map.put(o.toString(), oo.toString());
            } else if (oo instanceof JSONArray) {
                JSONArray ooo = (JSONArray) oo;
                List list = new ArrayList();

                for (int i = 0; i < ooo.toArray().length; i++) { //for (int i = 0; i < ooo.length(); i++) {
                    String jso = ooo.getString(i);
                    list.add(jso.toString());
                }
                map.put(o.toString(), list);
            } else {
                map.put(o.toString(), oo);
            }
        }

        return map;

    }

    public static Map<String, String> jSONObjectOfOneLevel2Map(JSONObject jsonObject) {
        Map<String, String> map = new HashMap<String, String>();
        Iterator it = jsonObject.keys();
        // 遍历jsonObject数据，添加到Map对象
        while (it.hasNext()) {
            String key = String.valueOf(it.next());
            String value = (String) jsonObject.get(key);
            map.put(key, value);
        }
        return map;
    }