读取USB HDD(USB移动硬盘信息)序列号的代码

2024-04-15 00:58

本文主要是介绍读取USB HDD(USB移动硬盘信息)序列号的代码,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!

读取USB HDD(USB移动硬盘)序列号的代码,型号及分位。

使用Visual Studio 2010编译成功。

代码使用了CrystalDiskInfo中的代码smartata.c中相关代码:

如下的连接解释了为何使用scsi的相关代码,需要USB IC的数据转换。

http://blog.csdn.net/waityoualife/article/details/5656589

实现代码如下:

// DiskInfo.cpp : Defines the entry point for the console application.
//#include "stdafx.h"
#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include <winioctl.h>
#include <stddef.h>
#include <memory.h>#define IOCTL_STORAGE_QUERY_PROPERTY   CTL_CODE(IOCTL_STORAGE_BASE, 0x0500, METHOD_BUFFERED, FILE_ANY_ACCESS)typedef struct _IDENTIFY_DEVICE{WORD		GeneralConfiguration;					//0WORD		LogicalCylinders;						//1	ObsoleteWORD		SpecificConfiguration;					//2WORD		LogicalHeads;							//3 ObsoleteWORD		Retired1[2];							//4-5WORD		LogicalSectors;							//6 ObsoleteDWORD		ReservedForCompactFlash;				//7-8WORD		Retired2;								//9CHAR		SerialNumber[20];						//10-19WORD		Retired3;								//20WORD		BufferSize;								//21 Obsolete
//		WORD		Obsolute4;								//22CHAR		FirmwareRev[8];							//23-26CHAR		Model[40];								//27-46WORD		MaxNumPerInterupt;						//47WORD		Reserved1;								//48WORD		Capabilities1;							//49WORD		Capabilities2;							//50DWORD		Obsolute5;								//51-52WORD		Field88and7064;							//53WORD		Obsolute6[5];							//54-58WORD		MultSectorStuff;						//59DWORD		TotalAddressableSectors;				//60-61WORD		Obsolute7;								//62WORD		MultiWordDma;							//63WORD		PioMode;								//64WORD		MinMultiwordDmaCycleTime;				//65WORD		RecommendedMultiwordDmaCycleTime;		//66WORD		MinPioCycleTimewoFlowCtrl;				//67WORD		MinPioCycleTimeWithFlowCtrl;			//68WORD		Reserved2[6];							//69-74WORD		QueueDepth;								//75WORD		SerialAtaCapabilities;					//76WORD		SerialAtaAdditionalCapabilities;		//77WORD		SerialAtaFeaturesSupported;				//78WORD		SerialAtaFeaturesEnabled;				//79WORD		MajorVersion;							//80WORD		MinorVersion;							//81WORD		CommandSetSupported1;					//82WORD		CommandSetSupported2;					//83WORD		CommandSetSupported3;					//84WORD		CommandSetEnabled1;						//85WORD		CommandSetEnabled2;						//86WORD		CommandSetDefault;						//87WORD		UltraDmaMode;							//88WORD		TimeReqForSecurityErase;				//89WORD		TimeReqForEnhancedSecure;				//90WORD		CurrentPowerManagement;					//91WORD		MasterPasswordRevision;					//92WORD		HardwareResetResult;					//93WORD		AcoustricManagement;					//94WORD		StreamMinRequestSize;					//95WORD		StreamingTimeDma;						//96WORD		StreamingAccessLatency;					//97DWORD		StreamingPerformance;					//98-99ULONGLONG	MaxUserLba;								//100-103WORD		StremingTimePio;						//104WORD		Reserved3;								//105WORD		SectorSize;								//106WORD		InterSeekDelay;							//107WORD		IeeeOui;								//108WORD		UniqueId3;								//109WORD		UniqueId2;								//110WORD		UniqueId1;								//111WORD		Reserved4[4];							//112-115WORD		Reserved5;								//116DWORD		WordsPerLogicalSector;					//117-118WORD		Reserved6[8];							//119-126WORD		RemovableMediaStatus;					//127WORD		SecurityStatus;							//128WORD		VendorSpecific[31];						//129-159WORD		CfaPowerMode1;							//160WORD		ReservedForCompactFlashAssociation[7];	//161-167WORD		DeviceNominalFormFactor;				//168WORD		DataSetManagement;						//169WORD		AdditionalProductIdentifier[4];			//170-173WORD		Reserved7[2];							//174-175CHAR		CurrentMediaSerialNo[60];				//176-205WORD		SctCommandTransport;					//206WORD		ReservedForCeAta1[2];					//207-208WORD		AlignmentOfLogicalBlocks;				//209DWORD		WriteReadVerifySectorCountMode3;		//210-211DWORD		WriteReadVerifySectorCountMode2;		//212-213WORD		NvCacheCapabilities;					//214DWORD		NvCacheSizeLogicalBlocks;				//215-216WORD		NominalMediaRotationRate;				//217WORD		Reserved8;								//218WORD		NvCacheOptions1;						//219WORD		NvCacheOptions2;						//220WORD		Reserved9;								//221WORD		TransportMajorVersionNumber;			//222WORD		TransportMinorVersionNumber;			//223WORD		ReservedForCeAta2[10];					//224-233WORD		MinimumBlocksPerDownloadMicrocode;		//234WORD		MaximumBlocksPerDownloadMicrocode;		//235WORD		Reserved10[19];							//236-254WORD		IntegrityWord;							//255
}IDENTIFY_DEVICE;typedef enum _COMMAND_TYPE{CMD_TYPE_PHYSICAL_DRIVE = 0,CMD_TYPE_SCSI_MINIPORT,CMD_TYPE_SILICON_IMAGE,CMD_TYPE_SAT,				// SAT = SCSI_ATA_TRANSLATIONCMD_TYPE_SUNPLUS,CMD_TYPE_IO_DATA,CMD_TYPE_LOGITEC,CMD_TYPE_JMICRON,CMD_TYPE_CYPRESS,CMD_TYPE_PROLIFIC,			// Not imprementCMD_TYPE_CSMI,				// CSMI = Common Storage Management InterfaceCMD_TYPE_CSMI_PHYSICAL_DRIVE, // CSMI = Common Storage Management Interface CMD_TYPE_WMI,CMD_TYPE_DEBUG
}COMMAND_TYPE;// retrieve the properties of a storage device or adapter.
typedef enum _STORAGE_QUERY_TYPE {PropertyStandardQuery = 0,PropertyExistsQuery,PropertyMaskQuery,PropertyQueryMaxDefined
} STORAGE_QUERY_TYPE, *PSTORAGE_QUERY_TYPE;// retrieve the properties of a storage device or adapter.typedef struct _STORAGE_PROPERTY_QUERY {STORAGE_PROPERTY_ID  PropertyId;STORAGE_QUERY_TYPE  QueryType;UCHAR  AdditionalParameters[1];
} STORAGE_PROPERTY_QUERY, *PSTORAGE_PROPERTY_QUERY;#define	FILE_DEVICE_SCSI							0x0000001b
#define	IOCTL_SCSI_MINIPORT_IDENTIFY				((FILE_DEVICE_SCSI << 16) + 0x0501)
#define	IOCTL_SCSI_MINIPORT_READ_SMART_ATTRIBS		((FILE_DEVICE_SCSI << 16) + 0x0502)
#define IOCTL_SCSI_MINIPORT_READ_SMART_THRESHOLDS	((FILE_DEVICE_SCSI << 16) + 0x0503)
#define IOCTL_SCSI_MINIPORT_ENABLE_SMART			((FILE_DEVICE_SCSI << 16) + 0x0504)
#define IOCTL_SCSI_MINIPORT_DISABLE_SMART			((FILE_DEVICE_SCSI << 16) + 0x0505)#define IOCTL_SCSI_BASE                 FILE_DEVICE_CONTROLLER
#define IOCTL_SCSI_PASS_THROUGH         CTL_CODE(IOCTL_SCSI_BASE, 0x0401, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)//
// Define values for pass-through DataIn field.
//
#define SCSI_IOCTL_DATA_OUT          0
#define SCSI_IOCTL_DATA_IN           1
#define SCSI_IOCTL_DATA_UNSPECIFIED  2//
// Define the SCSI pass through structure.
//
typedef struct _SCSI_PASS_THROUGH {USHORT Length;UCHAR ScsiStatus;UCHAR PathId;UCHAR TargetId;UCHAR Lun;UCHAR CdbLength;UCHAR SenseInfoLength;UCHAR DataIn;ULONG DataTransferLength;ULONG TimeOutValue;ULONG_PTR DataBufferOffset;ULONG SenseInfoOffset;UCHAR Cdb[16];
}SCSI_PASS_THROUGH, *PSCSI_PASS_THROUGH;typedef struct _SCSI_PASS_THROUGH_WITH_BUFFERS {
SCSI_PASS_THROUGH Spt;
ULONG             Filler;      // realign buffers to double word boundary
UCHAR             SenseBuf[32];
UCHAR             DataBuf[512];
} SCSI_PASS_THROUGH_WITH_BUFFERS, *PSCSI_PASS_THROUGH_WITH_BUFFERS;static void dump_buffer(const char* title, const unsigned char* buffer, int len)
{int i = 0;int j;printf ("\n-- %s --\n", title);if (len > 0){printf ("%8.8s ", " ");for (j = 0; j < 16; ++j){printf (" %2X", j);}printf ("  ");for (j = 0; j < 16; ++j){printf ("%1X", j);}printf ("\n");}while (i < len){printf("%08x ", i);for (j = 0; j < 16; ++j){if ((i + j) < len)printf (" %02x", (int) buffer[i +j]);elseprintf ("   ");}printf ("  ");for (j = 0; j < 16; ++j){if ((i + j) < len)printf ("%c", isprint (buffer[i + j]) ? buffer [i + j] : '.');elseprintf (" ");}printf ("\n");i += 16;}printf ("-- DONE --\n");
}void ChangeByteOrder(PCHAR szString, USHORT uscStrSize)
{USHORT i;CHAR temp;for (i = 0; i < uscStrSize; i+=2){temp = szString[i];szString[i] = szString[i+1];szString[i+1] = temp;}
}BOOL DoIdentifyDeviceSat(HANDLE physicalDriveId, BYTE target, IDENTIFY_DEVICE* data, COMMAND_TYPE type)
{BOOL	bRet;HANDLE	hIoCtrl;DWORD	dwReturned;DWORD	length;SCSI_PASS_THROUGH_WITH_BUFFERS sptwb;if(data == NULL){printf("Data\n");return	FALSE;}ZeroMemory(data, sizeof(IDENTIFY_DEVICE));hIoCtrl = physicalDriveId;if(hIoCtrl == INVALID_HANDLE_VALUE){printf("Handle\n");return	FALSE;}ZeroMemory(&sptwb,sizeof(SCSI_PASS_THROUGH_WITH_BUFFERS));sptwb.Spt.Length = sizeof(SCSI_PASS_THROUGH);sptwb.Spt.PathId = 0;sptwb.Spt.TargetId = 0;sptwb.Spt.Lun = 0;sptwb.Spt.SenseInfoLength = 24;sptwb.Spt.DataIn = SCSI_IOCTL_DATA_IN;sptwb.Spt.DataTransferLength = IDENTIFY_BUFFER_SIZE;sptwb.Spt.TimeOutValue = 2;sptwb.Spt.DataBufferOffset = offsetof(SCSI_PASS_THROUGH_WITH_BUFFERS, DataBuf);sptwb.Spt.SenseInfoOffset = offsetof(SCSI_PASS_THROUGH_WITH_BUFFERS, SenseBuf);if(type == CMD_TYPE_SAT){sptwb.Spt.CdbLength = 12;sptwb.Spt.Cdb[0] = 0xA1;//ATA PASS THROUGH(12) OPERATION CODE(A1h)sptwb.Spt.Cdb[1] = (4 << 1) | 0; //MULTIPLE_COUNT=0,PROTOCOL=4(PIO Data-In),Reservedsptwb.Spt.Cdb[2] = (1 << 3) | (1 << 2) | 2;//OFF_LINE=0,CK_COND=0,Reserved=0,T_DIR=1(ToDevice),BYTE_BLOCK=1,T_LENGTH=2sptwb.Spt.Cdb[3] = 0;//FEATURES (7:0)sptwb.Spt.Cdb[4] = 1;//SECTOR_COUNT (7:0)sptwb.Spt.Cdb[5] = 0;//LBA_LOW (7:0)sptwb.Spt.Cdb[6] = 0;//LBA_MID (7:0)sptwb.Spt.Cdb[7] = 0;//LBA_HIGH (7:0)sptwb.Spt.Cdb[8] = target;sptwb.Spt.Cdb[9] = 0xEC;//COMMAND}else if(type == CMD_TYPE_SUNPLUS){sptwb.Spt.CdbLength = 12;sptwb.Spt.Cdb[0] = 0xF8;sptwb.Spt.Cdb[1] = 0x00;sptwb.Spt.Cdb[2] = 0x22;sptwb.Spt.Cdb[3] = 0x10;sptwb.Spt.Cdb[4] = 0x01;sptwb.Spt.Cdb[5] = 0x00; sptwb.Spt.Cdb[6] = 0x01; sptwb.Spt.Cdb[7] = 0x00; sptwb.Spt.Cdb[8] = 0x00;sptwb.Spt.Cdb[9] = 0x00;sptwb.Spt.Cdb[10] = target; sptwb.Spt.Cdb[11] = 0xEC; // ID_CMD}else if(type == CMD_TYPE_IO_DATA){sptwb.Spt.CdbLength = 12;sptwb.Spt.Cdb[0] = 0xE3;sptwb.Spt.Cdb[1] = 0x00;sptwb.Spt.Cdb[2] = 0x00;sptwb.Spt.Cdb[3] = 0x01;sptwb.Spt.Cdb[4] = 0x01;sptwb.Spt.Cdb[5] = 0x00; sptwb.Spt.Cdb[6] = 0x00; sptwb.Spt.Cdb[7] = target;sptwb.Spt.Cdb[8] = 0xEC;  // ID_CMDsptwb.Spt.Cdb[9] = 0x00;sptwb.Spt.Cdb[10] = 0x00; sptwb.Spt.Cdb[11] = 0x00;}else if(type == CMD_TYPE_LOGITEC){sptwb.Spt.CdbLength = 10;sptwb.Spt.Cdb[0] = 0xE0;sptwb.Spt.Cdb[1] = 0x00;sptwb.Spt.Cdb[2] = 0x00;sptwb.Spt.Cdb[3] = 0x00;sptwb.Spt.Cdb[4] = 0x00;sptwb.Spt.Cdb[5] = 0x00; sptwb.Spt.Cdb[6] = 0x00; sptwb.Spt.Cdb[7] = target; sptwb.Spt.Cdb[8] = 0xEC;  // ID_CMDsptwb.Spt.Cdb[9] = 0x4C;}else if(type == CMD_TYPE_JMICRON){sptwb.Spt.CdbLength = 12;sptwb.Spt.Cdb[0] = 0xDF;sptwb.Spt.Cdb[1] = 0x10;sptwb.Spt.Cdb[2] = 0x00;sptwb.Spt.Cdb[3] = 0x02;sptwb.Spt.Cdb[4] = 0x00;sptwb.Spt.Cdb[5] = 0x00; sptwb.Spt.Cdb[6] = 0x01; sptwb.Spt.Cdb[7] = 0x00; sptwb.Spt.Cdb[8] = 0x00;sptwb.Spt.Cdb[9] = 0x00;sptwb.Spt.Cdb[10] = target; sptwb.Spt.Cdb[11] = 0xEC; // ID_CMD}else if(type == CMD_TYPE_CYPRESS){sptwb.Spt.CdbLength = 16;sptwb.Spt.Cdb[0] = 0x24;sptwb.Spt.Cdb[1] = 0x24;sptwb.Spt.Cdb[2] = 0x00;sptwb.Spt.Cdb[3] = 0xBE;sptwb.Spt.Cdb[4] = 0x01;sptwb.Spt.Cdb[5] = 0x00; sptwb.Spt.Cdb[6] = 0x00; sptwb.Spt.Cdb[7] = 0x01; sptwb.Spt.Cdb[8] = 0x00;sptwb.Spt.Cdb[9] = 0x00;sptwb.Spt.Cdb[10] = 0x00; sptwb.Spt.Cdb[11] = target;sptwb.Spt.Cdb[12] = 0xEC; // ID_CMDsptwb.Spt.Cdb[13] = 0x00;sptwb.Spt.Cdb[14] = 0x00;sptwb.Spt.Cdb[15] = 0x00;}else{return FALSE;}length = offsetof(SCSI_PASS_THROUGH_WITH_BUFFERS, DataBuf) + sptwb.Spt.DataTransferLength;bRet = DeviceIoControl(hIoCtrl, IOCTL_SCSI_PASS_THROUGH, &sptwb, sizeof(SCSI_PASS_THROUGH),&sptwb, length,	&dwReturned, NULL);CloseHandle(hIoCtrl);if(bRet == FALSE || dwReturned != length){return	FALSE;}memcpy(data, sptwb.DataBuf, sizeof(IDENTIFY_DEVICE));return	TRUE;
}int main(int argc, char *argv[]) {HANDLE hDevice=NULL;STORAGE_PROPERTY_QUERY		sQuery;STORAGE_DEVICE_DESCRIPTOR*	pDescriptor;char *model, *firmware, *serialnumber;char usb_hdd_model[41], usb_hdd_firmware[9], usb_hdd_Serialnumber[21];IDENTIFY_DEVICE identify = {0};char pcbData[4096];int dwLen = 4096;DWORD	dwRet;BOOL	bRet;hDevice=CreateFileA("\\\\.\\PhysicalDrive1",GENERIC_READ|GENERIC_WRITE,FILE_SHARE_READ|FILE_SHARE_WRITE,NULL,OPEN_EXISTING,0,NULL);if(hDevice==INVALID_HANDLE_VALUE){   fprintf(stderr, "CreateFile()\n");exit(1);	}memset(pcbData, 0, 4096);sQuery.PropertyId = StorageDeviceProperty;sQuery.QueryType  = PropertyStandardQuery;bRet = DeviceIoControl(hDevice, IOCTL_STORAGE_QUERY_PROPERTY, &sQuery, sizeof(STORAGE_PROPERTY_QUERY), pcbData,dwLen,&dwRet,NULL);if(bRet){pDescriptor = (STORAGE_DEVICE_DESCRIPTOR*)pcbData;if(pDescriptor->BusType == BusTypeUsb){printf("USB-Type\n");}if(pDescriptor->ProductIdOffset){model = (char*)pDescriptor + pDescriptor->ProductIdOffset;printf("Model: %s\n", model);}if(pDescriptor->ProductRevisionOffset){firmware = (char*)pDescriptor + pDescriptor->ProductRevisionOffset;printf("Firmware: %s\n", firmware);}if(pDescriptor->SerialNumberOffset){serialnumber = (char*)pDescriptor + pDescriptor->SerialNumberOffset;printf("Serial number: %s\n", serialnumber);}}
/*CMD_TYPE_SAT,				// SAT = SCSI_ATA_TRANSLATIONCMD_TYPE_SUNPLUS,CMD_TYPE_IO_DATA,CMD_TYPE_LOGITEC,CMD_TYPE_JMICRON,CMD_TYPE_CYPRESS,
*/if(DoIdentifyDeviceSat(hDevice, 0xa0, &identify, CMD_TYPE_SAT)){printf("0xA0-CMD_TYPE_SAT-Return ok");}	else if(DoIdentifyDeviceSat(hDevice, 0xa0, &identify, CMD_TYPE_SUNPLUS)){printf("0xA0-CMD_TYPE_SUNPLUS-Return ok");}else if(DoIdentifyDeviceSat(hDevice, 0xa0, &identify, CMD_TYPE_IO_DATA)){printf("0xA0-CMD_TYPE_IO_DATA-Return ok");}else if(DoIdentifyDeviceSat(hDevice, 0xa0, &identify, CMD_TYPE_LOGITEC)){printf("0xA0-CMD_TYPE_LOGITEC-Return ok");}else if(DoIdentifyDeviceSat(hDevice, 0xa0, &identify, CMD_TYPE_JMICRON)){printf("0xA0-CMD_TYPE_JMICRON-Return ok");}else if(DoIdentifyDeviceSat(hDevice, 0xb0, &identify, CMD_TYPE_SAT)){printf("0xB0-CMD_TYPE_SAT-Return ok");}	else if(DoIdentifyDeviceSat(hDevice, 0xb0, &identify, CMD_TYPE_SUNPLUS)){printf("0xB0-CMD_TYPE_SUNPLUS-Return ok");}else if(DoIdentifyDeviceSat(hDevice, 0xb0, &identify, CMD_TYPE_IO_DATA)){printf("0xB0-CMD_TYPE_IO_DATA-Return ok");}else if(DoIdentifyDeviceSat(hDevice, 0xb0, &identify, CMD_TYPE_LOGITEC)){printf("0xB0-CMD_TYPE_LOGITEC-Return ok");}else if(DoIdentifyDeviceSat(hDevice, 0xb0, &identify, CMD_TYPE_JMICRON)){printf("0xB0-CMD_TYPE_JMICRON-Return ok");}else{printf("Return ng\n");}#define debug 0
#if debugdump_buffer("data", (const unsigned char *)&identify, sizeof(IDENTIFY_DEVICE));
#endifmemcpy(usb_hdd_model, identify.Model, 40);ChangeByteOrder(usb_hdd_model, 40);usb_hdd_model[40]='\0';memcpy(usb_hdd_firmware, identify.FirmwareRev, 8);ChangeByteOrder(usb_hdd_firmware, 8);usb_hdd_firmware[8]='\0';memcpy(usb_hdd_Serialnumber, identify.SerialNumber, 20);ChangeByteOrder(usb_hdd_Serialnumber, 20);usb_hdd_Serialnumber[20]='\0';printf("\nUSB-HDD   Model  name: %s", usb_hdd_model);printf("\nUSB-HDD Firmware  Rev: %s", usb_hdd_firmware);printf("\nUSB-HDD Serial number: %s", usb_hdd_Serialnumber);return 0;
}


这篇关于读取USB HDD(USB移动硬盘信息)序列号的代码的文章就介绍到这儿,希望我们推荐的文章对编程师们有所帮助!



http://www.chinasem.cn/article/904494

相关文章

C++使用栈实现括号匹配的代码详解

《C++使用栈实现括号匹配的代码详解》在编程中,括号匹配是一个常见问题,尤其是在处理数学表达式、编译器解析等任务时,栈是一种非常适合处理此类问题的数据结构,能够精确地管理括号的匹配问题,本文将通过C+... 目录引言问题描述代码讲解代码解析栈的状态表示测试总结引言在编程中,括号匹配是一个常见问题,尤其是在

C#中读取XML文件的四种常用方法

《C#中读取XML文件的四种常用方法》Xml是Internet环境中跨平台的,依赖于内容的技术,是当前处理结构化文档信息的有力工具,下面我们就来看看C#中读取XML文件的方法都有哪些吧... 目录XML简介格式C#读取XML文件方法使用XmlDocument使用XmlTextReader/XmlTextWr

Java调用DeepSeek API的最佳实践及详细代码示例

《Java调用DeepSeekAPI的最佳实践及详细代码示例》:本文主要介绍如何使用Java调用DeepSeekAPI,包括获取API密钥、添加HTTP客户端依赖、创建HTTP请求、处理响应、... 目录1. 获取API密钥2. 添加HTTP客户端依赖3. 创建HTTP请求4. 处理响应5. 错误处理6.

Python如何实现PDF隐私信息检测

《Python如何实现PDF隐私信息检测》随着越来越多的个人信息以电子形式存储和传输,确保这些信息的安全至关重要,本文将介绍如何使用Python检测PDF文件中的隐私信息,需要的可以参考下... 目录项目背景技术栈代码解析功能说明运行结php果在当今,数据隐私保护变得尤为重要。随着越来越多的个人信息以电子形

使用 sql-research-assistant进行 SQL 数据库研究的实战指南(代码实现演示)

《使用sql-research-assistant进行SQL数据库研究的实战指南(代码实现演示)》本文介绍了sql-research-assistant工具,该工具基于LangChain框架,集... 目录技术背景介绍核心原理解析代码实现演示安装和配置项目集成LangSmith 配置(可选)启动服务应用场景

Python中顺序结构和循环结构示例代码

《Python中顺序结构和循环结构示例代码》:本文主要介绍Python中的条件语句和循环语句,条件语句用于根据条件执行不同的代码块,循环语句用于重复执行一段代码,文章还详细说明了range函数的使... 目录一、条件语句(1)条件语句的定义(2)条件语句的语法(a)单分支 if(b)双分支 if-else(

MySQL数据库函数之JSON_EXTRACT示例代码

《MySQL数据库函数之JSON_EXTRACT示例代码》:本文主要介绍MySQL数据库函数之JSON_EXTRACT的相关资料,JSON_EXTRACT()函数用于从JSON文档中提取值,支持对... 目录前言基本语法路径表达式示例示例 1: 提取简单值示例 2: 提取嵌套值示例 3: 提取数组中的值注意

CSS3中使用flex和grid实现等高元素布局的示例代码

《CSS3中使用flex和grid实现等高元素布局的示例代码》:本文主要介绍了使用CSS3中的Flexbox和Grid布局实现等高元素布局的方法,通过简单的两列实现、每行放置3列以及全部代码的展示,展示了这两种布局方式的实现细节和效果,详细内容请阅读本文,希望能对你有所帮助... 过往的实现方法是使用浮动加

JAVA调用Deepseek的api完成基本对话简单代码示例

《JAVA调用Deepseek的api完成基本对话简单代码示例》:本文主要介绍JAVA调用Deepseek的api完成基本对话的相关资料,文中详细讲解了如何获取DeepSeekAPI密钥、添加H... 获取API密钥首先,从DeepSeek平台获取API密钥,用于身份验证。添加HTTP客户端依赖使用Jav

Java实现状态模式的示例代码

《Java实现状态模式的示例代码》状态模式是一种行为型设计模式,允许对象根据其内部状态改变行为,本文主要介绍了Java实现状态模式的示例代码,文中通过示例代码介绍的非常详细,需要的朋友们下面随着小编来... 目录一、简介1、定义2、状态模式的结构二、Java实现案例1、电灯开关状态案例2、番茄工作法状态案例