javax.persistence.PrePersist#org.apache.commons.beanutils.BeanUtilsBean源码实例Demo

public static <T> void populate(T targetObject, Map<String, Object> properties) {
	if (properties == null) {
		return;
	}

	T target = getTargetObject(targetObject);

	try {
		BeanUtilsBean beanUtils = new BeanUtilsBean();
		beanUtils.getPropertyUtils().addBeanIntrospector(DefaultBeanIntrospector.INSTANCE);
		beanUtils.getPropertyUtils().addBeanIntrospector(new KebabCasePropertyBeanIntrospector());
		beanUtils.getPropertyUtils().addBeanIntrospector(SuppressPropertiesBeanIntrospector.SUPPRESS_CLASS);
		beanUtils.copyProperties(target, properties);
	}
	catch (IllegalAccessException | InvocationTargetException e) {
		throw new IllegalArgumentException("Failed to populate target of type " + targetObject.getClass()
			+ " with properties " + properties, e);
	}
}
 

public void onApplyEnvParams() {
    logger.info("onApplyEnvParams: start");
    try {

    	EnvironmentSettings environmentSettings = BeanUtil.getSfContext().getEnvironmentManager().getEnvironmentSettings();
    	BeanMap environmentBeanMap = new BeanMap(environmentSettings);

        for (EnvironmentEntity entry : environmentParamsList) {
        	Class<?> type = environmentBeanMap.getType(entry.getParamName());
        	Object convertedValue = BeanUtilsBean.getInstance().getConvertUtils().convert(entry.getParamValue(), type);
            environmentBeanMap.put(entry.getParamName(), convertedValue);
        }
        BeanUtil.getSfContext().getEnvironmentManager().updateEnvironmentSettings((EnvironmentSettings) environmentBeanMap.getBean());
        BeanUtil.showMessage(FacesMessage.SEVERITY_INFO, "INFO", "Successfully saved. Some options will be applied only after Sailfish restart");
    } catch (Exception e){
        logger.error(e.getMessage(), e);
        BeanUtil.showMessage(FacesMessage.SEVERITY_ERROR, "ERROR", e.getMessage());
    }
    logger.info("onApplyEnvParams: end");
}
 

/**
 * Checks if the Property Values of the item are valid for the Request.
 *
 * @param item
 * @throws AirtableException
 * @throws IllegalAccessException
 * @throws InvocationTargetException
 * @throws NoSuchMethodException
 */
private void checkProperties(T item) throws AirtableException, IllegalAccessException, InvocationTargetException, NoSuchMethodException {

    if (propertyExists(item, FIELD_ID) || propertyExists(item, FIELD_CREATED_TIME)) {
        Field[] attributes = item.getClass().getDeclaredFields();
        for (Field attribute : attributes) {
            String attrName = attribute.getName();
            if (FIELD_ID.equals(attrName) || FIELD_CREATED_TIME.equals(attrName)) {
                if (BeanUtils.getProperty(item, attribute.getName()) != null) {
                    throw new AirtableException("Property " + attrName + " should be null!");
                }
            } else if ("photos".equals(attrName)) {
                List<Attachment> obj = (List<Attachment>) BeanUtilsBean.getInstance().getPropertyUtils().getProperty(item, "photos");
                checkPropertiesOfAttachement(obj);
            }
        }
    }

}
 

public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException{
    User user = new User();
    HashMap map = new HashMap();
    Enumeration names = request.getParameterNames();
    while (names.hasMoreElements()) {
        String name = (String) names.nextElement();
        map.put(name, request.getParameterValues(name));
    }
    try{
        BeanUtils.populate(user, map); //BAD

        BeanUtilsBean beanUtl = BeanUtilsBean.getInstance();
        beanUtl.populate(user, map); //BAD
    }catch(Exception e){
        e.printStackTrace();
    }
}
 

/**
 * @param accesses 不可操作的字段
 * @param params   参数上下文
 * @return true
 * @see BeanUtilsBean
 * @see org.apache.commons.beanutils.PropertyUtilsBean
 */
protected boolean doUpdateAccess(FieldFilterDataAccessConfig accesses, AuthorizingContext params) {
    Map<String, Object> paramsMap = params.getParamContext().getParams();

    Object supportParam = paramsMap.size() == 0 ?
            paramsMap.values().iterator().next() :
            paramsMap.values().stream()
                    .filter(param -> (param instanceof Entity) || (param instanceof Model) || (param instanceof Map))
                    .findAny()
                    .orElse(null);
    if (null != supportParam) {
        for (String field : accesses.getFields()) {
            try {
                //设置值为null,跳过修改
                BeanUtilsBean.getInstance()
                        .getPropertyUtils()
                        .setProperty(supportParam, field, null);
            } catch (Exception e) {
                logger.warn("can't set {} null", field, e);
            }
        }
    } else {
        logger.warn("doUpdateAccess skip ,because can not found any support entity in param!");
    }
    return true;
}
 

@Test
public void testTCPURI() throws Exception {
   TransportConfiguration tc = new TransportConfiguration(NettyConnectorFactory.class.getName());
   HashMap<String, Object> params = new HashMap<>();
   params.put("host", "localhost1");
   params.put("port", 61617);
   TransportConfiguration tc2 = new TransportConfiguration(NettyConnectorFactory.class.getName(), params);
   HashMap<String, Object> params2 = new HashMap<>();
   params2.put("host", "localhost2");
   params2.put("port", 61618);
   TransportConfiguration tc3 = new TransportConfiguration(NettyConnectorFactory.class.getName(), params2);
   ActiveMQConnectionFactory connectionFactoryWithHA = ActiveMQJMSClient.createConnectionFactoryWithHA(JMSFactoryType.CF, tc, tc2, tc3);
   URI tcp = parser.createSchema("tcp", connectionFactoryWithHA);
   ActiveMQConnectionFactory factory = parser.newObject(tcp, null);
   BeanUtilsBean bean = new BeanUtilsBean();
   checkEquals(bean, connectionFactoryWithHA, factory);
}
 

@Test
public void testJGroupsFileURI() throws Exception {
   DiscoveryGroupConfiguration discoveryGroupConfiguration = new DiscoveryGroupConfiguration();
   JGroupsFileBroadcastEndpointFactory endpointFactory = new JGroupsFileBroadcastEndpointFactory().setChannelName("channel-name").setFile("channel-file.xml");
   discoveryGroupConfiguration.setName("foo").setRefreshTimeout(12345).setDiscoveryInitialWaitTimeout(5678).setBroadcastEndpointFactory(endpointFactory);
   ActiveMQConnectionFactory connectionFactoryWithHA = ActiveMQJMSClient.createConnectionFactoryWithHA(discoveryGroupConfiguration, JMSFactoryType.CF);
   URI tcp = parser.createSchema("jgroups", connectionFactoryWithHA);
   ActiveMQConnectionFactory factory = parser.newObject(tcp, null);
   DiscoveryGroupConfiguration dgc = factory.getDiscoveryGroupConfiguration();
   Assert.assertNotNull(dgc);
   BroadcastEndpointFactory befc = dgc.getBroadcastEndpointFactory();
   Assert.assertNotNull(befc);
   Assert.assertTrue(befc instanceof JGroupsFileBroadcastEndpointFactory);
   Assert.assertEquals(dgc.getName(), "foo");
   Assert.assertEquals(dgc.getDiscoveryInitialWaitTimeout(), 5678);
   Assert.assertEquals(dgc.getRefreshTimeout(), 12345);
   JGroupsFileBroadcastEndpointFactory fileBroadcastEndpointFactory = (JGroupsFileBroadcastEndpointFactory) befc;
   Assert.assertEquals(fileBroadcastEndpointFactory.getFile(), "channel-file.xml");
   Assert.assertEquals(fileBroadcastEndpointFactory.getChannelName(), "channel-name");

   BeanUtilsBean bean = new BeanUtilsBean();
   checkEquals(bean, connectionFactoryWithHA, factory);
}
 

@Test
public void testJGroupsPropertiesURI() throws Exception {
   DiscoveryGroupConfiguration discoveryGroupConfiguration = new DiscoveryGroupConfiguration();
   JGroupsPropertiesBroadcastEndpointFactory endpointFactory = new JGroupsPropertiesBroadcastEndpointFactory().setChannelName("channel-name").setProperties("param=val,param2-val2");
   discoveryGroupConfiguration.setName("foo").setRefreshTimeout(12345).setDiscoveryInitialWaitTimeout(5678).setBroadcastEndpointFactory(endpointFactory);
   ActiveMQConnectionFactory connectionFactoryWithHA = ActiveMQJMSClient.createConnectionFactoryWithHA(discoveryGroupConfiguration, JMSFactoryType.CF);
   URI tcp = parser.createSchema("jgroups", connectionFactoryWithHA);
   ActiveMQConnectionFactory factory = parser.newObject(tcp, null);
   DiscoveryGroupConfiguration dgc = factory.getDiscoveryGroupConfiguration();
   Assert.assertNotNull(dgc);
   BroadcastEndpointFactory broadcastEndpointFactory = dgc.getBroadcastEndpointFactory();
   Assert.assertNotNull(broadcastEndpointFactory);
   Assert.assertTrue(broadcastEndpointFactory instanceof JGroupsPropertiesBroadcastEndpointFactory);
   Assert.assertEquals(dgc.getName(), "foo");
   Assert.assertEquals(dgc.getDiscoveryInitialWaitTimeout(), 5678);
   Assert.assertEquals(dgc.getRefreshTimeout(), 12345);
   JGroupsPropertiesBroadcastEndpointFactory propertiesBroadcastEndpointFactory = (JGroupsPropertiesBroadcastEndpointFactory) broadcastEndpointFactory;
   Assert.assertEquals(propertiesBroadcastEndpointFactory.getProperties(), "param=val,param2-val2");
   Assert.assertEquals(propertiesBroadcastEndpointFactory.getChannelName(), "channel-name");

   BeanUtilsBean bean = new BeanUtilsBean();
   checkEquals(bean, connectionFactoryWithHA, factory);
}
 

/**
 * BeanUtil initialization, considering Lutèce availables locales and date format properties
 */
public static void init( )
{
    _mapBeanUtilsBeans = new HashMap<>( );

    for ( Locale locale : I18nService.getAdminAvailableLocales( ) )
    {
        BeanUtilsBean beanUtilsBean = new BeanUtilsBean( );
        beanUtilsBean.getPropertyUtils( ).addBeanIntrospector( SuppressPropertiesBeanIntrospector.SUPPRESS_CLASS );

        DateConverter dateConverter = new DateConverter( null );
        dateConverter.setPattern( I18nService.getDateFormatShortPattern( locale ) );
        beanUtilsBean.getConvertUtils( ).register( dateConverter, Date.class );
        _mapBeanUtilsBeans.put( locale.getLanguage( ), beanUtilsBean );
    }
}
 

@Test
public void testAllPropertiesTransit() {
    PollingConfigBean pollingConfigBean = new PollingConfigBean();
    pollingConfigBean.setIdleTimeBetweenReadsInMillis(1000);
    pollingConfigBean.setMaxGetRecordsThreadPool(20);
    pollingConfigBean.setMaxRecords(5000);
    pollingConfigBean.setRetryGetRecordsInSeconds(30);

    ConvertUtilsBean convertUtilsBean = new ConvertUtilsBean();
    BeanUtilsBean utilsBean = new BeanUtilsBean(convertUtilsBean);

    MultiLangDaemonConfiguration multiLangDaemonConfiguration = new MultiLangDaemonConfiguration(utilsBean, convertUtilsBean);
    multiLangDaemonConfiguration.setStreamName("test-stream");

    PollingConfig pollingConfig = pollingConfigBean.build(kinesisAsyncClient, multiLangDaemonConfiguration);

    assertThat(pollingConfig.kinesisClient(), equalTo(kinesisAsyncClient));
    assertThat(pollingConfig.streamName(), equalTo(multiLangDaemonConfiguration.getStreamName()));
    assertThat(pollingConfig.idleTimeBetweenReadsInMillis(), equalTo(pollingConfigBean.getIdleTimeBetweenReadsInMillis()));
    assertThat(pollingConfig.maxGetRecordsThreadPool(), equalTo(Optional.of(pollingConfigBean.getMaxGetRecordsThreadPool())));
    assertThat(pollingConfig.maxRecords(), equalTo(pollingConfigBean.getMaxRecords()));
    assertThat(pollingConfig.retryGetRecordsInSeconds(), equalTo(Optional.of(pollingConfigBean.getRetryGetRecordsInSeconds())));
}
 

protected Type getPropertyType(Object instance, String propertyName) {
    try {
        if (instance != null) {
            Field field = instance.getClass().getField(propertyName);
            return field.getGenericType();
        } else {
            // instance is null for anonymous class, use default type
        }
    } catch (NoSuchFieldException e1) {
        try {
            BeanUtilsBean beanUtilsBean = BeanUtilsBean.getInstance();
            PropertyUtilsBean propertyUtils = beanUtilsBean.getPropertyUtils();
            PropertyDescriptor propertyDescriptor = propertyUtils.getPropertyDescriptor(instance, propertyName);
            return propertyDescriptor.getReadMethod().getGenericReturnType();
        } catch (Exception e2) {
            // nothing
        }
    } catch (Exception e) {
        // ignore other exceptions
    }
    // return Object class type by default
    return Object.class;
}
 

/**
 * <p>Reads an XML document from an {@link URL}
 * and uses it to configure this {@link FactoryConfiguration}.</p>
 * 
 * @param url the URL to read from
 */
protected void readImpl(URL url) throws IOException
{
    // since beanutils 1.9.4, we need to relax access to the 'class' method
    BeanUtilsBean.getInstance().getPropertyUtils().removeBeanIntrospector(SuppressPropertiesBeanIntrospector.SUPPRESS_CLASS);

    Digester digester = new Digester();
    digester.setNamespaceAware(true);
    digester.setXIncludeAware(true);
    digester.setValidating(false);
    digester.setUseContextClassLoader(true);
    digester.push(this);
    digester.addRuleSet(getRuleSet());
    try
    {
        digester.parse(url);
    }
    catch (SAXException saxe)
    {
        throw new RuntimeException("There was an error while parsing the InputStream", saxe);
    }
    finally
    {
        BeanUtilsBean.getInstance().getPropertyUtils().resetBeanIntrospectors();
    }
}
 

private static void copyProperties(Object from,Object to,BeanUtilsBean bub){
    try {
        bub.copyProperties(to,from);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}
 

/**
 * 从 data 对象中抽取出相应的属性值保持到attributes中,
 * 在执行build()方法时可以将attributes写入到entity的payload中
 *
 * @param data javabean 或者 Map对象
 * @param keys 需要抽取的属性名称集合
 * @return
 */
public ResultEntityBuilder extract(Object data, String... keys) {
    for (String key : keys) {
        try {
            attr(key, BeanUtilsBean.getInstance().getPropertyUtils().getProperty(data, key));
        } catch (Exception e) {
            throw new IllegalArgumentException(e);
        }
    }
    return this;
}
 

/**
 *
 * Filter the Fields of the PostRecord Object. Id and created Time are set
 * to null so Object Mapper doesent convert them to JSON.
 *
 * @param item
 * @return
 * @throws IllegalAccessException
 * @throws InvocationTargetException
 * @throws NoSuchMethodException
 */
private T filterFields(T item) throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {

    final Field[] attributes = item.getClass().getDeclaredFields();

    for (Field attribute : attributes) {
        String attrName = attribute.getName();
        if ((FIELD_ID.equals(attrName) || FIELD_CREATED_TIME.equals(attrName)) 
                && (BeanUtils.getProperty(item, attrName) != null)) {
            BeanUtilsBean.getInstance().getPropertyUtils().setProperty(item, attrName, null);
        }
    }

    return item;
}
 

public static void beanUtils() throws InvocationTargetException, IllegalAccessException, NoSuchMethodException, InstantiationException {
    BeanUtilsBean beanUtilsBean = new BeanUtilsBean2();
    beanUtilsBean.getConvertUtils().register(false, false, 0);//错误不抛出异常、不使用Null做默认值，数组的默认大小为0

    User user = new User();
    user.setName("test");
    TestUser testUser = new TestUser();

    beanUtilsBean.copyProperties(testUser, user);
    System.out.println(testUser);
}
 

protected void setObjectPropertyNull(Object obj, Set<String> fields) {
    if (null == obj) {
        return;
    }
    for (String field : fields) {
        try {
            BeanUtilsBean.getInstance().getPropertyUtils().setProperty(obj, field, null);
        } catch (Exception ignore) {

        }
    }
}
 

protected boolean propertyInScope(Object obj, String property, Set<Object> scope) {
    if (null == obj) {
        return false;
    }
    try {
        Object value = BeanUtilsBean.getInstance().getProperty(obj, property);
        if (null != value) {
            return scope.contains(value);
        }
    } catch (Exception ignore) {
        logger.warn("can not get property {} from {},{}", property, obj, ignore.getMessage());
    }
    return true;

}
 

@Override
public void wrapper(ColumnMetadata instance, int index, String attr, Object value) {
    try {
        BeanUtilsBean.getInstance().setProperty(instance, attr, value);
    } catch (Exception e) {
        e.printStackTrace();
    }
}
 

public Object getValue(Object dataObject) {
	PropertyUtilsBean utils = BeanUtilsBean.getInstance().getPropertyUtils();
	try {
		return utils.getNestedProperty(dataObject, getName());
	}
	catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
		throw new IllegalStateException("cannot access field " + getName() + " for " + dataObject.getClass().getName(), e);
	}
}
 

public void setValue(Object dataObject, Object value) {
	PropertyUtilsBean utils = BeanUtilsBean.getInstance().getPropertyUtils();
	try {
		utils.setNestedProperty(dataObject, getName(), value);
	}
	catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
		throw new IllegalStateException("cannot access field " + getName() + " for " + dataObject.getClass().getName(), e);
	}
}
 

protected void createAttributes(T meta) {
	Class<?> implClass = meta.getImplementationClass();
	PropertyUtilsBean utils = BeanUtilsBean.getInstance().getPropertyUtils();
	PropertyDescriptor[] descriptors = utils.getPropertyDescriptors(implClass);
	for (PropertyDescriptor desc : descriptors) {
		if (desc.getReadMethod().getDeclaringClass() != implClass)
			continue; // contained in super type

		createAttribute(meta, desc);
	}
	
	// 
}
 

public void initialize(ConfigurableApplicationContext applicationContext) {
    logger.debug("Context is initialized");
    BeanUtilsBean.getInstance().
            getConvertUtils().register(new LongConverter(null),
            Long.class);
    BeanUtilsBean.getInstance()
            .getConvertUtils().register(new BigDecimalConverter(null),
            BigDecimal.class);
}
 

/**
 * Instantiates an object of the specified type and populates properties of the object from the provided
 * parameters.
 *
 * @param parameters a {@link Map} of values to populate the object from
 * @param cls the {@link Class} representing the type of the object to instantiate and populate
 * @param <T> the type of the object to instantiate and populate
 * @return the instantiated and populated object
 */
public static <T> T mapParametersToBean(Map<String, Object> parameters, Class<T> cls) {
	try {
		T bean = cls.newInstance();

		BeanUtilsBean beanUtils = new BeanUtilsBean();
		beanUtils.getPropertyUtils().addBeanIntrospector(SuppressPropertiesBeanIntrospector.SUPPRESS_CLASS);
		beanUtils.populate(bean, parameters);

		return bean;
	}
	catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
		throw new IllegalArgumentException("Error mapping parameters to class of type " + cls.getName(), e);
	}
}
 

/**
 * Register the following converters:
 * <ul>
 * <li>{@link EmailAddressConverter}</li>
 * <li>{@link SmsSenderConverter}</li>
 * </ul>
 * 
 * If a conversion error occurs it throws an exception.
 */
public static void registerDefaultConverters() {
	// TODO: auto-detect converters in the classpath ?
	// Add converter for being able to convert string address into
	// EmailAddress
	ConvertUtils.register(new EmailAddressConverter(), EmailAddress.class);
	// Add converter for being able to convert string into
	// SMS sender
	ConvertUtils.register(new SmsSenderConverter(), Sender.class);
	BeanUtilsBean.getInstance().getConvertUtils().register(true, false, 0);
}
 

@PrePersist
public void onCreate(Object object) {
  final String ID = "id";
  final String CREATED_AT = "createdAt";
  final String LAST_MODIFIED_AT = "lastModifiedAt";
  BeanUtilsBean beanUtilsBean = BeanUtilsBean2.getInstance();
  try {
    if (Objects.equals(beanUtilsBean.getProperty(object, ID), CommonsConstant.ZERO)) {
      beanUtilsBean.setProperty(object, CREATED_AT, System.currentTimeMillis());
      beanUtilsBean.setProperty(object, LAST_MODIFIED_AT, System.currentTimeMillis());
    }
  } catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException ignore) {}
}
 

@PrePersist
public void onCreate(Object object) {
  final String ID = "id";
  final String VALID_FLAG = "validFlag";
  BeanUtilsBean beanUtilsBean = BeanUtilsBean2.getInstance();
  try {
    if (Objects.equals(beanUtilsBean.getProperty(object, ID), CommonsConstant.ZERO)) {
      beanUtilsBean.setProperty(object, VALID_FLAG, ValidFlag.VALID);
    }
  } catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException ignore) {}
}
 

private static void checkEquals(Object factory,
                                Object factory2) throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
   BeanUtilsBean bean = new BeanUtilsBean();
   PropertyDescriptor[] descriptors = bean.getPropertyUtils().getPropertyDescriptors(factory);
   for (PropertyDescriptor descriptor : descriptors) {
      if (descriptor.getWriteMethod() != null && descriptor.getReadMethod() != null) {
         Assert.assertEquals(descriptor.getName() + " incorrect", bean.getProperty(factory, descriptor.getName()), bean.getProperty(factory2, descriptor.getName()));
      }
   }
}
 

@Test
public void testTCPAllProperties() throws Exception {
   StringBuilder sb = new StringBuilder();
   sb.append("tcp://localhost:3030?ha=true");
   BeanUtilsBean bean = new BeanUtilsBean();
   ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(true, (TransportConfiguration) null);
   populate(sb, bean, factory);
   ActiveMQConnectionFactory factory2 = parser.newObject(new URI(sb.toString()), null);
   checkEquals(bean, factory, factory2);
}
 

@Test
public void testUDPAllProperties() throws Exception {
   StringBuilder sb = new StringBuilder();
   sb.append("udp://localhost:3030?ha=true");
   BeanUtilsBean bean = new BeanUtilsBean();
   ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(true, (TransportConfiguration) null);
   populate(sb, bean, factory);
   ActiveMQConnectionFactory factory2 = parser.newObject(new URI(sb.toString()), null);
   checkEquals(bean, factory, factory2);
}