java将JsonObject转为Bean

具体使用

		//获取业务参数
		String busiStr = req.getParameter("busiData");
		if(!StringUtils.isEmpty(busiStr)){
			try {
				this.busiData = JsonUtils.transferToBean(busiStr);
			} catch (Exception e) {}
		}

将JsonObject转为Bean

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import com.platform.core.base.Bean;
import com.platform.core.base.IBean;
import com.platform.core.exception.CoreException;
import com.platform.util.json.JSONArray;
import com.platform.util.json.JSONException;
import com.platform.util.json.JSONObject;
   /**
     * @param str JSON串
     * @return Bean实体
   */
    public static Bean transferToBean(String str) {
        Bean n = new Bean();
        if (str != null && str.length() > 0) {
            try {
                JSONObject jsObject = new JSONObject(str);
                /*Iterator is = jsObject.keys();
                for (Iterator iterator = collection.iterator(); iterator
						.hasNext();) {
					type type = (type) iterator.next();
					
				}*/
                for (Iterator<?> i = jsObject.keys(); i.hasNext();) {
                    Bean[] tmpBean = new Bean[] { };
                    String key = (String) i.next();
                    Object value = jsObject.get(key);
                    if (value instanceof JSONArray) {
                        JSONArray tmpArray = (JSONArray) value;
                        tmpBean = new Bean[tmpArray.length()];
                        for (int index = 0, len = tmpArray.length(); index < len; index++) {
                        	String subStr = tmpArray.getString(index).toString();
                        	//处理类似"ids":["125","124"]的列表数据转换报错
                        	if(subStr.startsWith("[") || subStr.startsWith("{"))
                        		tmpBean[index] = transferToBean(tmpArray.getString(index).toString());
                        	else {
                        		tmpBean = new Bean[] {};//{"ids":["125","124"],"gridArray":[{"__PK_CODE__":"125"},{"__PK_CODE__":"124"}]}
                        		break;
                        	}
                        }
                    }
                    if (tmpBean.length > 0) {
                        n.set(key, tmpBean);
                    } else {
                        n.set(key, value);
                    }
                }
            } catch (JSONException e) {
                throw new CoreException("JSONException: " + e.getMessage());
            }
        }
        return n;
    }

将对象转为JSON字符串

    /**
     * @param obj 对象
     * @return JSON串 */
    public static String toJson(Object obj) {
        return new JSONObject(obj).toString();
    }

转换json字符串数组为List<IBean>,形如[{},{}]

 public static List<IBean> transferToListBean(String str) {
    	List<IBean> retListIBeans = new ArrayList<IBean>();
        if (str != null && str.length() > 0) {
        	try {
				JSONArray jsonArray = new JSONArray(str);
				if(null != jsonArray  && jsonArray.length() > 0){
					for (int i = 0; i < jsonArray.length(); i++) {
						String jsonString = jsonArray.getString(i);
						IBean bean = transferToBean(jsonString);
						retListIBeans.add(bean);
					}
				}
			} catch (JSONException e) {
				e.printStackTrace();
			}
        	
        }
		return retListIBeans;
    }

将list对象转为JSON字符串

    public static String toListJson(List<IBean> obj) {
        return new JSONArray(obj).toString();
    }