方式一/*** Creates a JSONDynaBean from a JSONObject.*/ public static Object toBean( JSONObject jsonObject ) 返回的数据类型明显不是我们常用的数据类型方式二/*** Creates a bean from a JSONObject, with a specific target class.<br>*/public static Object toBean( JSONObject jsonObject, Class beanClass ) 方式三（常用）/*** Creates a bean from a JSONObject, with a specific target class.<br>* If beanClass is null, this method will return a graph of DynaBeans. Any* attribute that is a JSONObject and matches a key in the classMap will be* converted to that target class.<br>* The classMap has the following conventions:* <ul>* <li>Every key must be an String.</li>* <li>Every value must be a Class.</li>* <li>A key may be a regular expression.</li>* </ul>*/ public static Object toBean( JSONObject jsonObject, Class beanClass, Map classMap )方式四/*** Creates a bean from a JSONObject, with the specific configuration.*/ public static Object toBean( JSONObject jsonObject, JsonConfig jsonConfig )方式2其实最终调用的就是方式四，看来jsonConfig对象很重要，决定了最后返回的数据类型，当然还远不至于这些。方式3也最终调用的是方式4方式五（常用）/*** Creates a bean from a JSONObject, with the specific configuration.*/ public static Object toBean( JSONObject jsonObject, Object root, JsonConfig jsonConfig )直接对已有对象的处理，，把json的数据写入到已有对象中。比较常用的方式三与方式五例子:接着bean to json的代码//二 json to objectJSONObject jsonObject = JSONObject.fromObject(returnString); Object returnObject = null; //办法一 class+map config的方式三 Map config = new HashMap();config.put("addresses", Address.class);config.put("sameTest", Person.class); returnObject = JSONObject.toBean(jsonObject, Person.class,config); System.out.println(returnObject);//办法二 object+JsonConfig方式五 p = new Person(); JsonConfig jc = new JsonConfig(); jc.setClassMap(config); jc.setNewBeanInstanceStrategy(new NewBeanInstanceStrategy() {@Overridepublic Object newInstance(Class target, JSONObject source)throws InstantiationException, IllegalAccessException,SecurityException, NoSuchMethodException, InvocationTargetException {if( target != null ){if(target.getName().equals(Map.class.getName())){return new HashMap();}return NewBeanInstanceStrategy.DEFAULT.newInstance(target, source);}return null;}}); JSONObject.toBean(jsonObject, p, jc); System.out.println(p.getAddresses().get(0).getAddress());
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