String objectStr="{"namE":"JSON","age":"24","address":"北京市西城区"}";
      
        JsonConfig config=new JsonConfig();
        config.setRootClass(StudentModel.class);
        PropertyNameProcessor lowerCasePropertyNameProcessor = new PropertyNameProcessor() {
            @Override
            public String processPropertyName(Class aClass, String s) {
                return s.toLowerCase();
            }
        };
        config.registerJavaPropertyNameProcessor(StudentModel.class, lowerCasePropertyNameProcessor);
        JSONObject jsonObject=JSONObject.fromObject(objectStr);
        StudentModel stu=(StudentModel)JSONObject.toBean(jsonObject,config);