数据=（字符串）剪贴板.getData（DataFlavor.stringFlavor）抛出java.lang.StringIndexOutOfBoundsException：开头0，结尾-1，长度1888

Question

我使用Clipboard类获取位于剪贴板中的文本。但是data =（String）Clipboard.getData（DataFlavor.stringFlavor）抛出异常StringIndexOutOfBoundsException（id = 107）
我不知道为什么会这样。

/**
 * 
 * @param insert - inserts specific entity into database
 * @param fetch - fetches specific entity that has or will be inserted into database
 * @param <T> type of entity being inserted
 * @return
 */
@Transactional(propagation = Propagation.REQUIRES_NEW, isolation = Isolation.READ_COMMITTED)
public <T> T getOrInsertWithUniqueConstraints(Supplier<T> insert, Supplier<Optional<T>> fetch){
    try {
        Optional<T> entityInstance = fetch.get();
        return entityInstance.orElse(insert.get());
    }
    catch (DuplicateKeyException dke){
        Optional<T> entityAlreadyInserted = fetch.get();
        return entityAlreadyInserted.get();
    }
}