小明写了一个多线程的MultiThreadServiceDataProcessor
,但是却没有达到预期的目的。请帮助小明修复该问题。
在提交Pull Request之前,你应当在本地确保所有代码已经编译通过,并且通过了测试(mvn clean verify
)
注意!我们只允许你修改以下文件,对其他文件的修改会被拒绝:
完成题目有困难?不妨来看看写代码啦的相应课程吧!
回到写代码啦的题目,继续挑战!
Java advanced practice: multi-thread
小明写了一个多线程的MultiThreadServiceDataProcessor
,但是却没有达到预期的目的。请帮助小明修复该问题。
在提交Pull Request之前,你应当在本地确保所有代码已经编译通过,并且通过了测试(mvn clean verify
)
注意!我们只允许你修改以下文件,对其他文件的修改会被拒绝:
完成题目有困难?不妨来看看写代码啦的相应课程吧!
回到写代码啦的题目,继续挑战!
public class MultiThreadServiceDataProcessor {
// 线程数量
private final int threadNumber;
// 处理数据的远程服务
private final RemoteService remoteService;
// 所有数据处理成功标志位
private boolean dataHandleSuccess = true;
public MultiThreadServiceDataProcessor(int threadNumber, RemoteService remoteService) {
this.threadNumber = threadNumber;
this.remoteService = remoteService;
}
// 将所有数据发送至远程服务处理。若所有数据都处理成功(没有任何异常抛出),返回true;
// 否则只要有任何异常产生,返回false
public boolean processAllData(List<Object> allData) {
int groupSize =
allData.size() % threadNumber == 0
? allData.size() / threadNumber
: allData.size() / threadNumber + 1;
List<List<Object>> dataGroups = Lists.partition(allData, groupSize);
try {
List<Thread> threads = new ArrayList<>();
for (List<Object> dataGroup : dataGroups) {
Thread thread = new Thread(() -> dataGroup.forEach(data -> {
try {
remoteService.processData(data);
} catch (Exception e) {
dataHandleSuccess = false;
System.out.println(e.getClass().getSimpleName());
}
}));
thread.start();
threads.add(thread);
}
for (Thread thread : threads) {
thread.join();
}
} catch (Exception e) {
dataHandleSuccess = false;
}
return dataHandleSuccess;
}
}
IllegalStateException
异常还捕获到了下面这个名称的异常这是为什么?PotentialStubbingProblem
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