MINA的第一个例子终于能运行了__2

MINA的第一个例子终于能运行了__1

二、
将mina包换成1.0，并引入mina-filter-ssl-1.0.0.jar后再执行，报错

java.lang.NoClassDefFoundError: edu/emory/mathcs/backport/java/util/concurrent/Executor

原来是mina1.0硬引入了别的类文件

import edu.emory.mathcs.backport.java.util.concurrent.Executor;

于是乎我就把整个edu.emory.mathcs.backport.java.util包给down了下来,并引入工程echoserver(mina1.0中的example)。但是里面的关于assert的代码全部报错，忽略这个错误，执行程序，正确执行，但是后台报错(估计由于那个assert的问题引起的)

9109 [AnonymousIoService-1] INFO org.apache.mina.example.echoserver.EchoProtocolHandler - [/127.0.0.1:2306] OPENED
java.lang.Error: Unresolved compilation problems: 
	assert cannot be resolved to a type
	Duplicate local variable state
	Syntax error on token "!=", = expected
	assert cannot be resolved to a type
	Syntax error on token "==", = expected

	at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.workerDone(ThreadPoolExecutor.java:544)
	at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:679)
	at java.lang.Thread.run(Thread.java:534)
11328 [AnonymousIoService-2] INFO org.apache.mina.example.echoserver.EchoProtocolHandler - [/127.0.0.1:2306] RECEIVED: DirectBuffer[pos=0 lim=9 cap=2048: 7A 68 61 6E 67 6C 65 0D 0A]
11328 [AnonymousIoService-2] INFO org.apache.mina.example.echoserver.EchoProtocolHandler - [/127.0.0.1:2306] WRITE: DirectBuffer[pos=0 lim=9 cap=16: 7A 68 61 6E 67 6C 65 0D 0A]
java.lang.Error: Unresolved compilation problems: 
	assert cannot be resolved to a type
	Duplicate local variable state
	Syntax error on token "!=", = expected
	assert cannot be resolved to a type
	Syntax error on token "==", = expected

	at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.workerDone(ThreadPoolExecutor.java:544)
	at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:679)
	at java.lang.Thread.run(Thread.java:534)
11328 [AnonymousIoService-3] INFO org.apache.mina.example.echoserver.EchoProtocolHandler - [/127.0.0.1:2306] SENT: DirectBuffer[pos=0 lim=9 cap=16: 7A 68 61 6E 67 6C 65 0D 0A]
java.lang.Error: Unresolved compilation problems: 
	assert cannot be resolved to a type
	Duplicate local variable state
	Syntax error on token "!=", = expected
	assert cannot be resolved to a type
	Syntax error on token "==", = expected

	at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.workerDone(ThreadPoolExecutor.java:544)
	at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:679)
	at java.lang.Thread.run(Thread.java:534)
15797 [AnonymousIoService-4] INFO org.apache.mina.example.echoserver.EchoProtocolHandler - [/127.0.0.1:2306] CLOSED
java.lang.Error: Unresolved compilation problems: 
	assert cannot be resolved to a type
	Duplicate local variable state
	Syntax error on token "!=", = expected
	assert cannot be resolved to a type
	Syntax error on token "==", = expected

	at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.workerDone(ThreadPoolExecutor.java:544)
	at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:679)
	at java.lang.Thread.run(Thread.java:534)

这个问题怎么解决啊？？


找到了，解决办法：
JDK1.4版新加入的assertion机制(关键词：assert)，由于JDK1.4编译器
预设是兼容1.3，所以要使用assert必须在编译时加上-source 1.4的参数.

C:\>javac -source 1.4 XXX.java
执行时则必须加-ea 或-enableassertions参数启动。

C:\>java -ea XXX
如要在Eclipse中使用assertion机制，请作以下设定：
设定一：(编译设定)
Windows->Preferance->Java->Compiler->Compliance and Classfiles
页面。将..JDK Compliance level->Compiler compliance level调成1.4。

设定二：(执行设定)
Run->Run->(x)=Arguments页面，在VM arguments加入-da参数，按下
Run button便可看到启动assertion后的执行结果。
(Eclipse 2.1.3 release + assertion测试)
<assert判别为false，所以show出AssertionError>

新版(m8+)的eclipse可以设vm arguments
另外提供一种设法，是在eclipse启动时加入vm arguments(跟加大eclipse预设内存大小的方式一样)
这样就不用每次run都得需去设vm arguments