https://mina.apache.org/mina-project/userguide/ch17-spring-integration/ch17-spring-integration.html
链接的用户指南，它写道它适用于所有 DI 框架。
但是通过 Aries Blueprint 注入时出现以下错误且未初始化。
2022-02-09T11:59:53,554 | ERROR | Blueprint Extender: 3 | BlueprintContainerImpl | 60 - org.apache.aries.blueprint.core - 1.10.3 | Unable to start container for blueprint bundle io-bridge/0.0.1.SNAPSHOT
org.osgi.service.blueprint.container.ComponentDefinitionException: Error setting property: PropertyDescriptor <name: filters, getter: null, setter: [class org.apache.mina.core.filterchain.DefaultIoFilterChainBuilder.setFilters(interface java.util.Map)]
at org.apache.aries.blueprint.container.BeanRecipe.setProperty(BeanRecipe.java:818) ~[!/:1.10.3]
at org.apache.aries.blueprint.container.BeanRecipe.setProperties(BeanRecipe.java:784) ~[!/:1.10.3]
at org.apache.aries.blueprint.container.BeanRecipe.setProperties(BeanRecipe.java:765) ~[!/:1.10.3]
at org.apache.aries.blueprint.container.BeanRecipe.internalCreate2(BeanRecipe.java:699) ~[!/:1.10.3]
at org.apache.aries.blueprint.container.BeanRecipe.internalCreate(BeanRecipe.java:666) ~[!/:1.10.3]
at org.apache.aries.blueprint.di.AbstractRecipe$1.call(AbstractRecipe.java:81) ~[!/:1.10.3]
at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:90) ~[!/:1.10.3]
at org.apache.aries.blueprint.di.RefRecipe.internalCreate(RefRecipe.java:62) ~[!/:1.10.3]
at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:108) ~[!/:1.10.3]
at org.apache.aries.blueprint.container.BeanRecipe.setProperty(BeanRecipe.java:810) ~[!/:1.10.3]
at org.apache.aries.blueprint.container.BeanRecipe.setProperties(BeanRecipe.java:784) ~[!/:1.10.3]
at org.apache.aries.blueprint.container.BeanRecipe.setProperties(BeanRecipe.java:765) ~[!/:1.10.3]
at org.apache.aries.blueprint.container.BeanRecipe.internalCreate2(BeanRecipe.java:699) ~[!/:1.10.3]
at org.apache.aries.blueprint.container.BeanRecipe.internalCreate(BeanRecipe.java:666) ~[!/:1.10.3]
at org.apache.aries.blueprint.di.AbstractRecipe$1.call(AbstractRecipe.java:81) ~[!/:1.10.3]
at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:90) ~[!/:1.10.3]
at org.apache.aries.blueprint.di.RefRecipe.internalCreate(RefRecipe.java:62) ~[!/:1.10.3]
at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:108) ~[!/:1.10.3]
at org.apache.aries.blueprint.container.BeanRecipe.setProperty(BeanRecipe.java:810) ~[!/:1.10.3]
at org.apache.aries.blueprint.container.BeanRecipe.setProperties(BeanRecipe.java:784) ~[!/:1.10.3]
at org.apache.aries.blueprint.container.BeanRecipe.setProperties(BeanRecipe.java:765) ~[!/:1.10.3]
at org.apache.aries.blueprint.container.BeanRecipe.internalCreate2(BeanRecipe.java:699) ~[!/:1.10.3]
at org.apache.aries.blueprint.container.BeanRecipe.internalCreate(BeanRecipe.java:666) ~[!/:1.10.3]
at org.apache.aries.blueprint.di.AbstractRecipe$1.call(AbstractRecipe.java:81) ~[!/:1.10.3]
at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:90) ~[!/:1.10.3]
at org.apache.aries.blueprint.container.BlueprintRepository.createInstances(BlueprintRepository.java:360) ~[!/:1.10.3]
at org.apache.aries.blueprint.container.BlueprintRepository.createAll(BlueprintRepository.java:190) ~[!/:1.10.3]
at org.apache.aries.blueprint.container.BlueprintContainerImpl.instantiateEagerComponents(BlueprintContainerImpl.java:737) ~[!/:1.10.3]
at org.apache.aries.blueprint.container.BlueprintContainerImpl.doRun(BlueprintContainerImpl.java:433) [!/:1.10.3]
at org.apache.aries.blueprint.container.BlueprintContainerImpl.run(BlueprintContainerImpl.java:298) [!/:1.10.3]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) [?:?]
at java.util.concurrent.FutureTask.run(FutureTask.java:264) [?:?]
at org.apache.aries.blueprint.container.ExecutorServiceWrapper.run(ExecutorServiceWrapper.java:106) [!/:1.10.3]
at org.apache.aries.blueprint.utils.threading.impl.DiscardableRunnable.run(DiscardableRunnable.java:45) [!/:1.10.3]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) [?:?]
at java.util.concurrent.FutureTask.run(FutureTask.java:264) [?:?]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) [?:?]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [?:?]
at java.lang.Thread.run(Thread.java:834) [?:?]
Caused by: java.lang.IllegalArgumentException: filters is not an ordered map. Please try java.util.LinkedHashMap.
at org.apache.mina.core.filterchain.DefaultIoFilterChainBuilder.setFilters(DefaultIoFilterChainBuilder.java:428) ~[?:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?]
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?]
at org.apache.aries.blueprint.utils.ReflectionUtils$MethodPropertyDescriptor.internalSet(ReflectionUtils.java:668) ~[!/:1.10.3]
at org.apache.aries.blueprint.utils.ReflectionUtils$PropertyDescriptor.set(ReflectionUtils.java:418) ~[!/:1.10.3]
at org.apache.aries.blueprint.container.BeanRecipe.setProperty(BeanRecipe.java:816) ~[!/:1.10.3]
... 42 more
这是错误内容的 xml 语法。
<bean id="myCodec" class="org.apache.mina.filter.codec.ProtocolCodecFilter">
<argument>
<bean class="com.my.project.core.message.RProtocolCodecFactory"/>
</argument>
</bean>
<bean id="filters" class="org.apache.mina.core.filterchain.DefaultIoFilterChainBuilder">
<property name="filters">
<map key-type="java.lang.String" value-type="org.apache.mina.filter.codec.ProtocolCodecFilter">
<entry key="codecFilter" value-ref="myCodec"/>
</map>
</property>
</bean>
更改日志级别调试时，我看到以下日志。
调试 [Blueprint Extender: 1] java.util.HashMap 不是 LinkedHashMap。
调试 [Blueprint Extender: 1] java.util.HashMap 没有实现 OrderedMap 接口。
调试 [蓝图扩展器：1] 不得已；尝试使用默认构造函数创建一个新的地图实例并测试是否保持插入顺序。
DEBUG [Blueprint Extender: 1] 指定的地图在 3 次尝试后未通过插入顺序测试。
这个调试日志写在 org.apache.mina.core.filterchain.DefaultIoFilterChainBuilder.java
类中有这样的注解和方法。
@SuppressWarnings("unchecked")
private boolean isOrderedMap(Map<String,? extends IoFilter> map) {
if (map == null) {
return false;
}
Class<?> mapType = map.getClass();
if (LinkedHashMap.class.isAssignableFrom(mapType)) {
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("{} is an ordered map.", mapType.getSimpleName() );
}
return true;
}
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("{} is not a {}", mapType.getName(), LinkedHashMap.class.getSimpleName());
}
// Detect Jakarta Commons Collections OrderedMap implementations.
Class<?> type = mapType;
while (type != null) {
for (Class<?> i : type.getInterfaces()) {
if (i.getName().endsWith("OrderedMap")) {
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("{} is an ordered map (guessed from that it implements OrderedMap interface.)",
mapType.getSimpleName());
}
return true;
}
}
type = type.getSuperclass();
}
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("{} doesn't implement OrderedMap interface.", mapType.getName() );
}
// Last resort: try to create a new instance and test if it maintains
// the insertion order.
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Last resort; trying to create a new map instance with a "
+ "default constructor and test if insertion order is maintained.");
}
Map<String,IoFilter> newMap;
try {
newMap = (Map<String,IoFilter>) mapType.newInstance();
} catch (Exception e) {
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Failed to create a new map instance of '{}'.", mapType.getName(), e);
}
return false;
}
Random rand = new Random();
List<String> expectedNames = new ArrayList<>();
IoFilter dummyFilter = new IoFilterAdapter();
for (int i = 0; i < 65536; i++) {
String filterName;
do {
filterName = String.valueOf(rand.nextInt());
} while (newMap.containsKey(filterName));
newMap.put(filterName, dummyFilter);
expectedNames.add(filterName);
Iterator<String> it = expectedNames.iterator();
for (Object key : newMap.keySet()) {
if (!it.next().equals(key)) {
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("The specified map didn't pass the insertion order test after {} tries.", (i + 1));
}
return false;
}
}
}
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("The specified map passed the insertion order test.");
}
return true;
}
“检测 Jakarta Commons Collections OrderedMap 实现”
如果注入的类型不是OrderedMap，可以看到试图创建一个新的Map。
使用现有的 Spring DM 属性时，预计会创建相同的新地图并尝试一下，但没有失败。
为什么？使用蓝图属性时会失败吗？
我错过了什么？有更好的选择吗？