比如有个属性叫userName,这个类写了个方法叫getUserName,通过invoke调用getUserName这个方法。
代码如下
复制代码 代码如下:
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
public class Parameterbase
{
public Map
{
Map
Field [] fields = this.getClass().getDeclaredFields();
for(int i=0; i< fields.length; i++)
{
Field f = fields[i];
String value = getFieldValue(this ,f.getName()).toString();
fieldsAndValues.put(f.getName(),value);
}
return fieldsAndValues;
}
private String getFieldValue(Object owner, String fieldName)
{
return invokeMethod(owner, fieldName,null).toString();
}
private Object invokeMethod(Object owner, String fieldName, Object[] args)
{
Class ownerClass = owner.getClass();
//fieldName -> FieldName
String methodName = fieldName.substring(0, 1).toUpperCase()+ fieldName.substring(1);
Method method = null;
try
{
method = ownerClass.getMethod("get" + methodName);
}
catch (SecurityException e)
{
//e.printStackTrace();
}
catch (NoSuchMethodException e)
{
// e.printStackTrace();
return "";
}
//invoke getMethod
try
{
return method.invoke(owner);
}
catch (Exception e)
{
return "";
}
}
}
写一个类User继承于Parameterbase并写上一个测试代码
复制代码 代码如下:
public class User extends Parameterbase
{
String userName ;
String passWorld;
public String getUserName()
{
return userName;
}
public void setUserName(String userName)
{
this.userName = userName;
}
public String getPassWorld()
{
return passWorld;
}
public void setPassWorld(String passWorld)
{
this.passWorld = passWorld;
}
public static void main(String[] args)
{
User u = new User();
u.passWorld = "123";
u.userName = "aaaaa";
System.out.println(u.getClassInfo().toString());
}
}
程序输出
复制代码 代码如下:
{passWorld=123, userName=aaaaa}
