JsonObject与javabean互转，Map与javabean互转

Posted 2020-07-19 小海追梦

/**
* 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);

}