我现在正在尝试将一个简单的 PE 添加到我的应用程序中。这个PE扩展了AbstractPE并覆盖了输出方法。(什么也不做) 我还修改了 xml 文件，添加了一个 bean，如下所示:
<bean id="rogerpe" class="cnu.roger.FPActor.RogerPE">
<property name="keys">
<list>
<value>RawTransaction *</value>
</list>
</property>
</bean>
但是，当我尝试运行该平台时。出现一些异常。
Caused by: org.springframework.beans.BeanInstantiationException:
Could not instantiate bean class [cnu.roger.FPActor.RogerPE]:
Constructor threw exception; nested exception is java.lang.ArrayIndexOutOfBoundsException: -1
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:115)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:61)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:877)
... 16 more
Caused by: java.lang.ArrayIndexOutOfBoundsException: -1
at java.util.ArrayList.elementData(ArrayList.java:338)
at java.util.ArrayList.get(ArrayList.java:351)
at io.s4.processor.OverloadDispatcherGenerator.generate(OverloadDispatcherGenerator.java:209)
at io.s4.processor.AbstractPE.<init>(AbstractPE.java:126)
at cnu.roger.FPActor.RogerPE.<init>(RogerPE.java:22)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:100)
... 18 more
此 PE 的代码:
package cnu.roger.FPActor;
import java.util.Collections;
import java.util.List;
import io.s4.processor.AbstractPE;
class RogerPE extends AbstractPE
{
@Override
public void output()
{
// TODO Auto-generated method stub
}
}
我现在很困惑。我不知道它意味着哪个数组。 如有任何帮助，我们将不胜感激!
在OverloadDispatcherGenerator.java中
InstructionHandle returnInstruction = il.append(InstructionFactory.createReturn(Type.VOID));
for (int i = 0; i < targetInstructions.size(); i++) {
branchInstructions.get(i).setTarget(targetInstructions.get(i));
}
branchInstructions.get(branchInstructions.size() - 1)
.setTarget(returnInstruction);
for (BranchInstruction gotoInstruction : gotoInstructions) {
gotoInstruction.setTarget(returnInstruction);
}
第 209 行是:branchInstructions.get....
最佳答案
我认为错误代码是:
branchInstructions.get(branchInstructions.size() - 1)
.setTarget(returnInstruction);
如果branchInstructions.size() == 0，则branchInstructions.size() - 1得到-1，但-1是无效索引。
关于java - S4 启动 PE 时数组索引越界，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/8904157/