Json 轉化爲Map

將json字符串按照key-value的格式轉化爲Map,保留原有的層次結構.

1. 引入json-lib相關聯的jar包

• commons-beanutils-1.8.3.jar
• commons-collections-3.2.1.jar
• commons-lang-2.6.jar
• commons-logging-1.1.1.jar
• ezmorph-1.0.6.jar
• json-lib-2.4-jdk15.jar

2. 遞歸解析:

package top.itart;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import net.sf.json.JSONObject;

public class Json {

    public static void main(String[] args) {
        String json = "{'user':{'name':'Jacy','age':'100'}, 'blog':{'blog1':'itart.cn','blog2':'itart.top'}}";
        Map<String, Object> map = convertToMap(JSONObject.fromObject(json));
        System.out.println(map);
    }

    private static Map<String, Object> convertToMap(JSONObject jsonObject)
    {
        HashMap<String, Object> data = new HashMap<String, Object>();
        Iterator<?> it = jsonObject.keys();
        while (it.hasNext())
        {
            String key = String.valueOf(it.next());
            Object value = jsonObject.get(key);
            if (value instanceof JSONObject) {
                data.put(key, convertToMap((JSONObject) value));
            } else {
                data.put(key, value);
            }
        }
        return data;
    }

}

來源: IT藝術博客(http://www.itart.cn)