java反射---实例

//reflect
//获取类对象
      Class<AlertMessage> alertMessageClass = (Class<AlertMessage>) alertMessage.getClass();
//获取字段的所有属性
      Field[] fsArray = alertMessageClass.getDeclaredFields();
//获取类内的所有方法
      Method[] methods = alertMessageClass.getMethods();
      for (Field f : fsArray) {
                           //获取访问权限
        f.setAccessible(true);
        Object val = f.get(alertMessage);
//output：属性的名字和属性的值 如：msisdn  123
//        System. out .println( "1st : name:" + f.getName()+ "\t value = " +val);
        //get the type of this property
        String type = f.getType().toString(); 
//output:输出属性类型 如：class java.lang.String
//        System.out.println("type : " + type);
        
        String typeName = f.getName().substring(0, 1).toUpperCase() + f.getName().substring(1);
//        System.out.println(typeName);
        
        if(f.getType() == java.sql.Timestamp.class ){
          //if val is null,not to format it
          for (Method method : methods) {
            if (method.getName().startsWith( "get" + typeName)){
//获取所有get的方法
//                      System. out .print( "methodName:" +method.getName()+ "/t" );
//通过get方法获取的值
//                      System. out .println( "value:" +method.invoke(alertMessage));
                      
                      if(val != null){
                  val = sdf.format(method.invoke(alertMessage));
                }
                      
          }
        }
          
        }
        
        //if val is null, change to ""
        if(val == null){
          val = "";
        }