public static void main(String[] args) throws IntrospectionException {
BeanInfo beanInfo = Introspector.getBeanInfo(User.class);
System.out.println("==>MethodDescriptor");
MethodDescriptor[] methodDescs = beanInfo.getMethodDescriptors();
for (MethodDescriptor method : methodDescs) {
System.out.println(method.getName());
System.out.println(method.getDisplayName());
System.out.println(method.getShortDescription());
System.out.println(method.getValue("getName"));
System.out.println("==>MethodDescriptor/ReflectionMethod");
Method reflectMethod = method.getMethod();
System.out.println(reflectMethod.getName());
System.out.println("==>MethodDescriptor/ParameterDescriptor");
ParameterDescriptor[] paramDescs = method.getParameterDescriptors();
if (paramDescs != null) {
for (ParameterDescriptor paramDesc : paramDescs) {
System.out.println(paramDesc.getName());
System.out.println(paramDesc.getDisplayName());
System.out.println(paramDesc.getShortDescription());
System.out.println(paramDesc.getValue("name"));
}
}
}
}
public static Method findSetter(Class<?> clazz, String name) throws IntrospectionException {
BeanInfo info = Introspector.getBeanInfo(clazz);
Method setter = null;
for (PropertyDescriptor pd : info.getPropertyDescriptors()) {
if (name.equals(pd.getName())) {
setter = pd.getWriteMethod();
break;
}
}
if (setter == null) {
// sometimes this happens even when there is a setter. Don't know why.
String expectedSetterName = "set" + name.substring(0, 1).toUpperCase() + name.substring(1);
for (MethodDescriptor md : info.getMethodDescriptors()) {
if (md.getName().equals(expectedSetterName)) {
setter = md.getMethod();
break;
}
}
}
return setter;
}
