利用java反射机制对多属性javabean赋值

public class ReflectMatch {

//封装属性

private Map<String,Field> fieldMap = new HashMap<String,Field();

//封装属性的set方法

private Map<String,Method> methMap=new HashMap<String,Method>();

/*c:为赋值对象，

*values为给属性要赋的值，put('m1',1);put('m2',2),m1、m2等为属性

*/

public void setValue(Object c,Map values){

try{

Field[] fields = c.getClass().getDeclaredFields();

Method[] methods = c.getClass().getDeclaredMethods();

for(Field field : fields){

String attri = field.getName();

fieldMap.put(attri.toLowerCase(), field);

for(Method method : methods){

String meth = method.getName();

//匹配set方法

if(meth != null

&& "set".equals(meth.substring(0, 3))

&& Modifier.isPublic(method.getModifiers())

&& ("set"+Character.toUpperCase(attri.charAt(0))+attri.substring(1)).equals(meth)){

methodMap.put(attri.toLowerCase(), method);

break;

}

}

}

//2、属性赋值

for(Iterator it = values.keySet().iterator();it.hasNext();){

String name = (String)it.next();

String value = (String)values.get(name);

if (value == null)

continue;

value = value.trim();

name = name.trim();

Field field = fieldMap.get(name.toLowerCase());

if(field == null) continue;

Method method = methodMap.get(name.toLowerCase());

if (method == null) continue;

fill(c,field,method,value);

}

}catch(Exception e){

e.printStackTrace();

}

}

/**

* 将字符串值转换为合适的值填充到对象的指定域

* @param bean 被填充的java bean

* @param field 需要填充的域

* @param value 字符串值

*/

public static void fill(Object bean, Field field, Method method, String value){

if (value == null||"null".equalsIgnoreCase(value))

return;

try{

Object[] oo = new Object[1];

String type = field.getType().getName();

if ("java.lang.String".equals(type)){

oo[0] = value;

}else if ("java.lang.Integer".equals(type)){

if (value.length() > 0) oo[0] = Integer.valueOf(value);

}else if ("java.lang.Float".equals(type)){

if (value.length() > 0) oo[0] = Float.valueOf(value);

}else if ("java.lang.Double".equals(type)){

if (value.length() > 0) oo[0] = Double.valueOf(value);

}else if ("java.math.BigDecimal".equals(type)){

if (value.length() > 0) oo[0] = new BigDecimal(value);

}else if("java.util.Date".equals(type)){

if (value.length() > 0) oo[0] = DateTimeUtil.create(value, "yyyy-mm-dd hh:mi:ss").toDate();

}else if("java.sql.Timestamp".equals(type)){

if (value.length() > 0) oo[0] = DateTimeUtil.create(value, "yyyy-mm-dd hh:mi:ss").toTimestamp();

}else if ("java.lang.Boolean".equals(type)){

if (value.length() > 0) oo[0] = Boolean.valueOf(value);

}else if("java.lang.Long".equals(type)){

if(value.length() > 0) oo[0] = Long.valueOf(value);

}

method.invoke(bean, oo);

}catch(Exception e){

e.printStackTrace();

}

}

}