Java Map转实体对象工具方法

http://liuzl121.iteye.com/blog/1746583


private static <T> T map2Bean(T t,Map map) throws Exception{  
    Class clazz = t.getClass();  
    //实例化类  
    T entity = (T)clazz.newInstance();  
    Set<String> keys = map.keySet();  
    //变量map 赋值  
    for(String key:keys){  
        String fieldName = key;  
        //判断是sql 还是hql返回的结果  
        if(key.equals(key.toUpperCase())){  
            //获取所有域变量  
            Field[] fields = clazz.getDeclaredFields();  
            for(Field field: fields){  
                if(field.getName().toUpperCase().equals(key)) fieldName=field.getName();  
                break;  
            }  
        }  
        //设置赋值  
        try {  
            //参数的类型  clazz.getField(fieldName)  
            Class<?> paramClass = clazz.getDeclaredField(fieldName).getType();  
            //拼装set方法名称  
            String methodName = "set"+fieldName.substring(0,1).toUpperCase()+fieldName.substring(1);  
            //根据名称获取方法  
            Method method = clazz.getMethod(methodName, paramClass);  
            //调用invoke执行赋值  
            method.invoke(entity, map.get(key));