使用Java 8构造时Bean创建的ArrayOutOfBoundsException [英] ArrayOutOfBoundsException on Bean creation while using Java 8 constructs

问题描述

当我使用Java 8功能时，我在服务启动（Bean创建）上得到 ArrayIndexOutOfBoundsException 。

I am getting an ArrayIndexOutOfBoundsException on service start up (Bean creation) when i use Java 8 features.

Java 8已经建立并一直在运行。代码编译正确。在服务启动时，服务无法侦听端口，因为bean未创建。当我更改代码（删除java 8构造）时，服务启动并且一切正常。

Java 8 has been set up and has been working. The code compiles correctly. On service start, the service fails to listen to port as the beans don't get created. When i change the code (remove java 8 constructs) the service starts and everything works fine.

这是我正在使用的代码（服务启动的工作代码） ）：

This is the code i am using (the working code for which the service starts):

for (Item itemObject : response) {
    if (itemObject.hasId()) {
        idList.add(String.valueOf(itemObject.Id());
    }
}

使用Java 8构造的相同代码：

Same code using Java 8 constructs:

response.parallelStream()
        .filter(itemObject -> itemObject.hasId())
        .map(itemObject -> itemObject.getId())
        .forEach(id -> idList.add(id));

包含这段代码的类的bean是使用组件扫描创建的。

The bean for the class containing this piece of code is created using component scan.

以下是使用第二个代码块代替第一个代码块时的异常消息：

The following is the exception message when the second code block is used in place of the first one:

Exiting with throwable: java.lang.IllegalArgumentException: org.springframework.beans.factory.BeanDefinitionStoreException: Failed to read candidate component class: URL [jar:file:/workspace/.../GetContainerIdForFcSkuAdapter.class]; nested exception is java.lang.ArrayIndexOutOfBoundsException: 51880
 java.lang.IllegalArgumentException: org.springframework.beans.factory.BeanDefinitionStoreException: Failed to read candidate component class: URL [jar:file:/workspace....Some.class]; nested exception is java.lang.ArrayIndexOutOfBoundsException: 51880

对我来说没有意义的是，为什么是创建bean时，函数内部的代码（不是bean类的构造函数）被覆盖。我问这个，因为当我使用普通for循环而不是并行流时，异常不存在。调用该函数并实际使用此代码时，不应出现 ArrayOutOfBoundsException 。

What does not make sense to me is, why is the code inside a function (which is not the constructor of the bean class) being covered while creating the bean. I ask this, because the exception is not there when i use the normal for loop instead of the parallel stream. Shouldn't an ArrayOutOfBoundsException arise when the function is called and this code is actually used.

我如何修复这个？

推荐答案

您使用的是哪个版本的Spring？您需要升级到Spring 4才能使用Java 8 lambda表达式。

Which version of Spring do you use? You need upgrade to Spring 4 to use Java 8 lambda expressions.

这篇关于使用Java 8构造时Bean创建的ArrayOutOfBoundsException的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！