private static String adressReplace(String adress) { if (StringUtils.isBlank(adress)) { return ""; } else { int length = adress.length(); String vagueAdress = ""; if (length > 15) { vagueAdress = adress.substring(6, 14); } else if (length > 5) { vagueAdress = adress.substring(3, length); } else if (length > 4) { vagueAdress = adress.substring(1, 4); } else if (length > 3) { vagueAdress = adress.substring(1, 3); } else if (length > 2) { vagueAdress = adress.substring(1, 2); } else if (length > 1) { vagueAdress = adress.substring(1, 2); } else if (length == 1) { vagueAdress = ""; } else { vagueAdress = adress; } return replaceAction(adress, vagueAdress); } }作用

IP-Adress.rar_ip adress_判断IP地址

} else { std::cout 地址 " 不合法。\n"; } return 0; } 此外，描述中还提到了判断邮件地址的合法性。电子邮件地址由用户名、@符号和域名组成，格式如"example@example.com"。邮件地址的验证更为复杂，通常...

gpio.rar_GPIO_adress_csharp gpio

private static extern void SetGpioState(int gpioPin, bool state); public void SetOutput(int gpioPin, bool state) { fixed (int* ptr = &gpioPin) { SetGpioState(*ptr, state); } } } 在这个...

private String adressReplace(String adress) { if (StringUtils.isBlank(adress)) { return ""; } int length = adress.length(); String vagueAdress = ""; if (length > 15) { vagueAdress = adress.substring(6, 14); } else if (length > 5) { vagueAdress = adress.substring(3, length); } else if (length > 4) { vagueAdress = adress.substring(1, 4); } else if (length > 3) { vagueAdress = adress.substring(1, 3); } else if (length > 2) { vagueAdress = adress.substring(1, 2); } else if (length > 1) { vagueAdress = adress.substring(1, 2); } else if (length == 1) { vagueAdress = ""; } else { vagueAdress = adress; } return replaceAction(adress, vagueAdress); }解析

该方法接收一个字符串 adress 作为输入，并返回一个经过脱敏处理的字符串。具体的脱敏操作如下： 1. 如果 adress 是空字符串或 null，则返回空字符串。 2. 如果 adress 的长度大于 15，则从第 7 个字符...

update exhibitor e set e.province = s. proovince,e.city = s.city,e.area = s.area,e.adress = s.adress,e.content = s.content from exhibitor e join Sheet1 s on e.company_name = s.company_name where e.company_name = s.company_name为什么不对，怎么修改

你的SQL语句中使用了内连接（INNER JOIN），因此只会更新exhibitor表中与Sheet1表匹配的行。如果exhibitor表中有一些公司名在Sheet1表中不存在，则这些行不会被更新。如果你想要更新exhibitor表中所有的行的省份、...

package ch1; import java.sql.; public class TestDB { public static void main(String[] args) { Connection conn = null; //定义连接对象 String Drivername = "com.mysql.jdbc.Driver"; //连接数据库驱动 String url = "jdbc:mysql://localhost:3306/tongxun"; //连接路径 String user = "root"; //连接数据库用户名 String password = "root"; //连接数据库的密码，请视实际情况修改密码 try { ; //填空2 加载驱动 System.out.println("加载驱动程序成功！！"); ; //填空3 和目标数据库建立连接 System.out.println("连接成功！！！"); String sql = "select from ben where name=? "; // 带参数的sql查询语句 ;//填空4 创建用来发送sql动态语句的对象 ;//填空5 设置上述sql语句的参数，即name为“托尼” ;//填空6 执行动态查询并返回结果 System.out.println(" 查询的结果如下："); while ( ) { //填空7定位到查询结果的下一行 String tel = ; //填空8 获取表中tel列的值赋给字符串变量tel String name = rst.getString("name"); String sex = rst.getString(3); String adress = rst.getString(4); System.out.println("电话：" + tel + " 姓名：" + name + " 性别：" + sex + " 地址：" + adress); } rst.close(); st.close(); ; //填空9关闭和数据库的连接 } catch (ClassNotFoundException e) { e.printStackTrace(); } catch ( ;) { //填空10 生成SQLException异常类对象 e.printStackTrace(); } } }

public static void main(String[] args) { Connection conn = null; //定义连接对象 String Drivername = "com.mysql.jdbc.Driver"; //连接数据库驱动 String url = "jdbc:mysql://localhost:3306/tongxun"; //...

update exhibor e set e.province,e.city,e.area,e.adress,e.content inner join sheet3 s on e.company_name = s.nvc_company_name这样写正确吗

根据你提供的SQL语句，似乎存在语法错误。正确的语法应该是： UPDATE exhibor e INNER JOIN sheet3 s ON e.company_name = s.nvc_company_name SET e.province = ..., e.city = ..., e.area = ..., e.address ...

#include<iostream> #include<string> #include<vector> #include<map> #include<iomanip> #include using namespace std; class item { public: string name;//书名 string item_type;//项目类型 bool Register;// }; //杂志类 class magazine :public item//类的继承 { string Type; string Writer; }; //MusicCd类 class MusicCd :public item { string Singer; }; //电影类 class Movie :public item { string Type; string Director; string Actor; }; //书籍类 class Book : public item { public: Book() { borrow_flag = false; } //无参构造函数 Book(string name, string num, string auther) :name(name), num(num), auther(auther) { borrow_flag = false; } //有参构造函数 void setReader(string reader, int lcn, string data); //设置读者 void setInfo(string name, string num, string auther); //设置书籍信息 string getName() { return name; } string getNum() { return num; } string getAuther() { return auther; } bool getBorrow_flag() { return borrow_flag; } string getReader() { return reader; } int getLcn() { return lcn; } string getData() { return data; } bool isBorrow() { return borrow_flag; } //判断书籍是否借出 void setBorrow_flag(bool b) { borrow_flag = b; } void showInfo(); //显示数据信息 private: string name; //书名 string num; //编号（唯一标示） string auther; //作者 bool borrow_flag; string reader; //读者 int lcn; //借书证号 string data; //借书日期 }; //DVD电影类 class DVD :public Movie { }; //蓝光电影类 class Blue_ligh :public Movie { }; //用户 class Person { public: string Name; string Adress; list<item> Regist_items; }; void Book::setReader(string reader, int lcn, string data) { borrow_flag = true; this->reader.assign(reader); this->lcn = lcn; this->data.assign(data); } void Book::setInfo(string name, string num, string auther) { this->name.assign(name); this->num.assign(num); this->auther.assign(auther); } void Book::showInfo() { cout << "书籍名称：" << setiosflags(ios_base::left) << setw(56) << name << endl << "书籍编号：" << setw(56) << num << endl << "书籍作者：" << setw(56) << auther << endl;//setw()输出字符宽度 if (borrow_flag) { cou

} else { cout 该书籍未被借出" ; } } int main() { Book b1("C++ Primer", "001", "Lippman"); b1.showInfo(); b1.setReader("Tom", 123456, "2022-05-01"); b1.showInfo(); return 0; } 这段代码...

import os import codecs def search_files(rootdir, keyword): for filename in os.listdir(rootdir): filepath = os.path.join(rootdir, filename) if os.path.isdir(filepath): search_files(filepath, keyword) else: try: with codecs.open(filepath, 'r', encoding='utf-8') as f: content = f.read() if keyword in content: print("包含 '{0}' 文字的文件路径： '{1}'".format(keyword, filepath)) except UnicodeDecodeError: #print("Error decoding file '{0}'".format(filepath)) print("",end='') adress = "D:\liziqian20221128\C\qtYuanDaiMa\ToolManageSystem" key = "" print("--"*20+"下面是包含关键词\"" + key + "\"文件路径") search_files(adress,key) 在这段代码中添加查到的文件文字中的行数

else: try: with codecs.open(filepath, 'r', encoding='utf-8') as f: content = f.readlines() count = 0 for line in content: # 遍历文件的每一行 if keyword in line: count += 1 if count > 0:...

Wechat adress=new Wechat(address); 如何可以让address为string类型

在Java中，如果你想创建一个Wechat对象并传递一个字符串类型的地址给它的构造函数，通常情况下，你需要确保Wechat类有一个接受String类型的构造函数。如果这样的构造函数不存在，你可以考虑使用以下两种方法：...

<meta name="format-detection" content="telephone=no,adress=no,email=no">

void library::delete1(library &L, char* arr) { library S; S = L.next; while(S) { S = S->next; } char a[100], b[100]; int i = 0, j = 0, count = 0; strcpy(a, arr); while (arr != '\0') { count++; arr++; } library p, q, r; q = &L; p = L.next; while (p != NULL) { strcpy(b, p->data.name); i = 0, j = 0; while (a[i] == b[j] && a[i] != '\0' && b[j] != '\0') { i++; j++; } if (i == count) { r = p; while (q) { while (q->next == r) { q->next = q->next->next; free(r); cout << "删除图书信息成功！" << endl; ofstream ofs; ofs.open("text.txt", ios::out); library S; S = L.next; while (S) { ofs << S->data.name << " " << S->data.num << " " << S->data.tel << " " << S->data.cla << " "<< S->data.name1 << " " << S->data.time << " " << S->data.adress << " " << endl; S = S->next; } ofs.close(); return; } q = q->next; } } p = p->next; } cout<<"查无此书，删除失败"<<endl; }告诉我该段代码每一句的含义

ofs << S->data.name << " " << S->data.num << " " << S->data.tel << " " << S->data.cla << " "<< S->data.name1 << " " << S->data.time << " " << S->data.adress ; S = S->next; } ofs.close(); return; ...

void library::modify(library &L, char* arr, char* arr1, char* arr2, char* arr3, char* arr4, char* arr5, char* arr6, char* arr7) { char a[100], b[100]; strcpy(a, arr); library p; int count = 0, i = 0, j = 0; while (arr != '\0') { count++; arr++; } p = L.next; while (p) { strcpy(b, p->data.name); i = 0, j = 0; while (a[i] == b[j] && a[i] != '\0' && b[j] != '\0') { i++; j++; } if (i == count) { strcpy(p->data.name, arr1); strcpy(p->data.num, arr2); strcpy(p->data.tel, arr3); strcpy(p->data.cla, arr4); strcpy(p->data.name1, arr5); strcpy(p->data.time, arr6); strcpy(p->data.adress, arr7); cout << "修改成功" << endl; ofstream ofs; ofs.open("text.txt", ios::out); library *S; S = L.next; while (S) { ofs << S->data.name << " " << S->data.num << " " << S->data.tel << " " << S->data.cla << " " << S->data.name1 << " " << S->data.time << " " << S->data.adress << " " << endl; S = S->next; } ofs.close(); return; } p = p->next; } cout<<"查无此书，修改失败"<<endl; }为我详细解释每段代码

int count = 0, i = 0, j = 0; while (*arr != '\0') { count++; arr++; } 这里定义了两个字符数组a和b，用于保存要查找的书名和图书库中已有的书名。然后使用strcpy函数将要查找的书名复制到a中。接着定义了...

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