java获取对象属性类型、属性名称、属性值、方法名称

<pre name="code" class="javascript"><pre name="code" class="java">	/**
	 * 根据属性名获取属性值
	 * */
    private Object getFieldValueByName(String fieldName, Object o) {
        try {  
            String firstLetter = fieldName.substring(0, 1).toUpperCase();  
            String getter = "get" + firstLetter + fieldName.substring(1);  
            Method method = o.getClass().getMethod(getter, new Class[] {});  
            Object value = method.invoke(o, new Object[] {});  
            return value;  
        } catch (Exception e) {  
            log.error(e.getMessage(),e);  
            return null;  
        }  
    } 
    
    /**
     * 获取属性名数组
     * */
    private String[] getFiledName(Object o){
    	Field[] fields=o.getClass().getDeclaredFields();
       	String[] fieldNames=new String[fields.length];
    	for(int i=0;i<fields.length;i++){
    		System.out.println(fields[i].getType());
    		fieldNames[i]=fields[i].getName();
    	}
    	return fieldNames;
    }
    
    /**
     * 获取属性类型(type)，属性名(name)，属性值(value)的map组成的list
     * */
    private List getFiledsInfo(Object o){
    	Field[] fields=o.getClass().getDeclaredFields();
       	String[] fieldNames=new String[fields.length];
       	List list = new ArrayList();
       	Map infoMap=null;
    	for(int i=0;i<fields.length;i++){
    		infoMap = new HashMap();
    		infoMap.put("type", fields[i].getType().toString());
    		infoMap.put("name", fields[i].getName());
    		infoMap.put("value", getFieldValueByName(fields[i].getName(), o));
    		list.add(infoMap);
    	}
    	return list;
    }
    
    /**
     * 获取对象的所有属性值，返回一个对象数组
     * */
    public Object[] getFiledValues(Object o){
    	String[] fieldNames=this.getFiledName(o);
    	Object[] value=new Object[fieldNames.length];
    	for(int i=0;i<fieldNames.length;i++){
    		value[i]=this.getFieldValueByName(fieldNames[i], o);
    	}
    	return value;
    }	

private void getField(Object model) {
<span style="white-space:pre">	</span>try {
<span style="white-space:pre">		</span>java.lang.reflect.Field[] fields = model.getClass().getDeclaredFields();
<span style="white-space:pre">		</span>for(java.lang.reflect.Field f:fields){
<span style="white-space:pre">			</span>System.out.println(f.getName());
<span style="white-space:pre">		</span>}
   <span style="white-space:pre">		</span>java.lang.reflect.Method[] method = model.getClass().getDeclaredMethods();//获取所有方法
   <span style="white-space:pre">		</span>for(java.lang.reflect.Method m:method){
    <span style="white-space:pre">			</span>System.out.println(m.getName());
    <span style="white-space:pre">			</span>if(m.getName().startsWith("get")){//取方法名为get...的
     <span style="white-space:pre">				</span>Object o = m.invoke(model);//执行
     <span style="white-space:pre">				</span>if(o==null||"".equals(o.toString())){//判断执行结果
      <span style="white-space:pre">					</span>System.out.println("aaa");
     <span style="white-space:pre">				</span>}else{//这里要测试，可以给对象属性设置默认值
      <span style="white-space:pre">				</span>System.out.println(o.toString());
     <span style="white-space:pre">				</span>}
    <span style="white-space:pre">			</span>}
  <span style="white-space:pre">	</span> <span style="white-space:pre">	</span>}
<span style="white-space:pre">	</span>} catch (IllegalArgumentException e) {
 <span style="white-space:pre">		</span>e.printStackTrace();
<span style="white-space:pre">	</span>} catch (IllegalAccessException e) {
<span style="white-space:pre">		</span>e.printStackTrace();
<span style="white-space:pre">	</span>} catch (InvocationTargetException e) {
<span style="white-space:pre">		</span>e.printStackTrace();
<span style="white-space:pre">	</span>} 
 }