qsLI edited a comment on issue #8174:
URL: https://github.com/apache/shardingsphere/issues/8174#issuecomment-727919667
```java
@Bean(name = "shardingDateSource")
public DataSource atourUserDataSource(@Qualifier("ds0") DruidDataSource
ds0) throws SQLException {
Map<String, DataSource> result = new HashMap<>();
result.put("ds0", ds0);
ShardingRuleConfiguration shardingRuleConfig = new
ShardingRuleConfiguration();
shardingRuleConfig.getTableRuleConfigs()
.add(getOrderTableRuleConfiguration());
final Properties keyGeneratorProperties = new Properties();
keyGeneratorProperties.put("id.generate.remote", idGenerateRemote);
shardingRuleConfig.setDefaultKeyGeneratorConfig(
new KeyGeneratorConfiguration("ATOUR-FLAKE", "coupon_id",
keyGeneratorProperties));
shardingRuleConfig.setDefaultTableShardingStrategyConfig(new
InlineShardingStrategyConfiguration("meb_id",
"meb_discount_coupons_${meb_id % " + shardingTableNodes + "}"));
Properties properties = new Properties();
properties.setProperty(ShardingPropertiesConstant.SQL_SHOW.getKey(),
String.valueOf(showSql));
return ShardingDataSourceFactory.createDataSource(result,
shardingRuleConfig, properties);
}
```
The root cause, i found is because `idGenerateRemote` is an proxy type.
```java
T proxy = (T) Proxy.newProxyInstance(target.type().getClassLoader(),
new Class<?>[] {target.type()}, handler);
```
Snakeyaml seems not support proxy type marshal.
```java
protected Map<String, Property> getPropertiesMap(Class<?> type, BeanAccess
bAccess) {
if (propertiesCache.containsKey(type)) {
return propertiesCache.get(type);
}
Map<String, Property> properties = new LinkedHashMap<String,
Property>();
boolean inaccessableFieldsExist = false;
switch (bAccess) {
case FIELD:
for (Class<?> c = type; c != null; c = c.getSuperclass()) {
for (Field field : c.getDeclaredFields()) {
int modifiers = field.getModifiers();
if (!Modifier.isStatic(modifiers) &&
!Modifier.isTransient(modifiers)
&& !properties.containsKey(field.getName()))
{
properties.put(field.getName(), new
FieldProperty(field));
}
}
}
break;
default:
// add JavaBean properties
try {
for (PropertyDescriptor property :
Introspector.getBeanInfo(type)
.getPropertyDescriptors()) {
Method readMethod = property.getReadMethod();
if ((readMethod == null ||
!readMethod.getName().equals("getClass"))
&& !isTransient(property)) {
properties.put(property.getName(), new
MethodProperty(property));
}
}
} catch (IntrospectionException e) {
throw new YAMLException(e);
}
// add public fields
for (Class<?> c = type; c != null; c = c.getSuperclass()) {
for (Field field : c.getDeclaredFields()) {
int modifiers = field.getModifiers();
if (!Modifier.isStatic(modifiers) &&
!Modifier.isTransient(modifiers)) {
if (Modifier.isPublic(modifiers)) {
properties.put(field.getName(), new
FieldProperty(field));
} else {
inaccessableFieldsExist = true;
}
}
}
}
break;
}
if (properties.isEmpty() && inaccessableFieldsExist) {
// here it throws
throw new YAMLException("No JavaBean properties found in " +
type.getName());
}
propertiesCache.put(type, properties);
return properties;
}
```
shardingsphere code location:
org.apache.shardingsphere.core.config.log.ConfigurationLogger#log(org.apache.shardingsphere.api.config.sharding.ShardingRuleConfiguration)
```java
/**
* log ShardingRuleConfiguration.
*
* @param shardingRuleConfiguration shardingRule configuration
*/
public static void log(final ShardingRuleConfiguration
shardingRuleConfiguration) {
if (null == shardingRuleConfiguration) {
return;
}
log(shardingRuleConfiguration.getClass().getSimpleName(),
YamlEngine.marshal(new
ShardingRuleConfigurationYamlSwapper().swap(shardingRuleConfiguration)));
}
```
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