1个比较简单的使用java反射机制获取前台数据进行数据封装的例子

//利用反射机制 和 从request获取所有参数的形式来构建查询对象
        CustomerChooseSearchParma searchObject = new CustomerChooseSearchParma();
//不是数组类型的参数的list
        List<String> singleList = getSingleStringFieldList();

        Map map = request.getParameterMap();
        Set keSet = map.entrySet();
        for(Iterator itr=keSet.iterator();itr.hasNext();){
            Map.Entry me = (Map.Entry)itr.next();
            String ok= (String)me.getKey();
            Object ov= me.getValue();  

            if(StringUtils.isNotBlank(ok) && !"action".equals(ok)){
                String methodName = "set" + ok.substring(0, 1).toUpperCase() + ok.substring(1);

                String[] value=new String[1];
                if(ov instanceof String[]){
                    value=(String[])ov;
                }else{
                    value[0]=ov.toString();
                }

                Method m = null;
                if(singleList.contains(ok)){
                    m = CustomerChooseSearchParma.class.getMethod(methodName, String.class);
                    m.invoke(searchObject, value[0]);
                }else{
                    m = CustomerChooseSearchParma.class.getMethod(methodName, String[].class);
                    m.invoke(searchObject, new Object[]{value});
                }
            }
        }