json.rar_JSON

package cn.edu.ytu.botao.json; import java.lang.reflect.Method; import java.text.ParseException; import java.util.HashMap; import java.util.Iterator; import java.util.Map; import org.json.JSONException; import org.json.JSONObject; /** * * 1:将JavaBean转换成Map、JSONObject * 2:将Map转换成Javabean * 3:将JSONObject转换成Map、Javabean * * @author botao */ public class JsonHelper { /** * 将Javabean转换为Map * * @param javaBean * javaBean * @return Map对象 */ public static Map toMap(Object javaBean) { Map result = new HashMap(); Method[] methods = javaBean.getClass().getDeclaredMethods(); for (Method method : methods) { try { if (method.getName().startsWith("get")) { String field = method.getName(); field = field.substring(field.indexOf("get") + 3); field = field.toLowerCase().charAt(0) + field.substring(1); Object value = method.invoke(javaBean, (Object[]) null); result.put(field, null == value ? "" : value.toString()); } } catch (Exception e) { e.printStackTrace(); } } return result; } /** * 将Json对象转换成Map * * @param jsonObject * json对象 * @return Map对象 * @throws JSONException */ public static Map toMap(String jsonString) throws JSONException { JSONObject jsonObject = new JSONObject(jsonString); Map result = new HashMap(); Iterator iterator = jsonObject.keys(); String key = null; String value = null; while (iterator.hasNext()) { key = (String) iterator.next(); value = jsonObject.getString(key); result.put(key, value); } return result; } /** * 将JavaBean转换成JSONObject（通过Map中转） * * @param bean * javaBean * @return json对象 */ public static JSONObject toJSON(Object bean) { return new JSONObject(toMap(bean)); } /** * 将Map转换成Javabean * * @param javabean * javaBean * @param data * Map数据 */ public static Object toJavaBean(Object javabean, Map data) { Method[] methods = javabean.getClass().getDeclaredMethods(); for (Method method : methods) { try { if (method.getName().startsWith("set")) { String field = method.getName(); field = field.substring(field.indexOf("set") + 3); field = field.toLowerCase().charAt(0) + field.substring(1); method.invoke(javabean, new Object[] { data.get(field) }); } } catch (Exception e) { } } return javabean; } /** * JSONObject到JavaBean * * @param bean * javaBean * @return json对象 * @throws ParseException * json解析异常 * @throws JSONException */ public static void toJavaBean(Object javabean, String jsonString) throws ParseException, JSONException { JSONObject jsonObject = new JSONObject(jsonString); Map map = toMap(jsonObject.toString()); toJavaBean(javabean, map); } }