小编Vla*_*mir的帖子

将无符号短数组(每个值16位)转换为无符号整数数组(每个值32位)的最有效方法是什么？

使用Spring IoC允许设置通过setter公开的bean属性:

public class Bean {
    private String value;
    public void setValue(String value) {
        this.value = value;
    }
}

而bean的定义是:

<bean class="Bean">
    <property name="value" value="Hello!">
</bean>

是否有任何现有的Spring Framework插件/类允许直接将bean字段作为属性公开而不定义setter？像这样的bean具有相同的bean定义:

public class Bean {
    @Property
    private String value;
}

我正在编写用户空间程序,旨在通过usb控制某些设备,所以我决定使用libusb(libusb-1.0)向该设备发送控制消息并从该设备接收响应.

但我不断从我的代码中收到以下一堆错误(即使它是使用'sudo'执行的):

USB error: could not set config 0: Device or resource busy
set configuration: failed
Check that you have permissions to write to 007/012 and, if you don't, that you set up hotplug (http://linux-hotplug.sourceforge.net/) correctly.
USB error: could not claim interface 0: Device or resource busy
claim interface: failed
USB error: error submitting URB: No such file or directory
bulk writing: failed
USB error: error submitting URB: No such file or directory
bulk reading: failed
response was: 

代码是:

usb_dev_handle* …