[技术分享]Python 工程师面试宝典一线大厂资深面试官亲授

jiafeimao123发布于1 个月前 • 45 次阅读

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Python服务端工程师学什么,面试问什么,你该准备什么?别苦恼,别害怕,别纠结,这门课程带你系统梳理面试知识,增加面试成功几率,提升后端开发技能,在面试之前解决你的各种问题,让你技术实力和面试技巧得到双重提升。

适合人群

Python服务端工程师(后端工程师)

初/中级 web 开发者和全栈开发者

使用 Python 语言的开发者

(运维工程师,爬虫工程师,数据分析师等)

技术储备要求

掌握Python编程语言

会使用Python进行网站开发,了解网站工作原理

有一定的网站后端基础知识 public Book() { }

复制 public Book(String id, String name, String price, String auth, String publish, String description) { super(); this.id = id; this.name = name; this.price = price; this.auth = auth; this.publish = publish; this.description = description; } public String getDescription() { return description; } public void setDescription(String description) { this.description = description; } public String getId() { return id; } public void setId(String id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPrice() { return price; } public void setPrice(String price) { this.price = price; } public String getAuth() { return auth; } public void setAuth(String auth) { this.auth = auth; } public String getPublish() { return publish; } public void setPublish(String publish) { this.publish = publish; } }

import java.util.LinkedHashMap; import java.util.Map; import cn.huiyu.ben.Book; public class BookDao { private static Map<String,Book> bookMap = new LinkedHashMap<String, Book>(); private BookDao() { } static{ bookMap.put(“1”, new Book(“1”,“1111”,“11.0”,“zqwang”,“111出版社”,“111111111”)); bookMap.put(“2”, new Book(“2”,“2222”,“22.0”,“zqwang”,“222出版社”,“222222222”)); bookMap.put(“3”, new Book(“3”,“3333”,“33.0”,“zqwang”,“333出版社”,“333333333”)); }

复制 public static Map<String,Book> getBooks(){ return bookMap; }

public static Book getBook(String id){ return bookMap.get(id); } }

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType(“text/html;charset=utf-8”); //1.查询数据库中一切的书展现 Map<String,Book> map = BookDao.getBooks(); for(Map.Entry<String , Book> entry : map.entrySet()){ Book book = entry.getValue(); response.getWriter().write("<a href=’"+request.getContextPath()+"/servlet/BookInfoServlet?id="+book.getId()+"’>"+book.getName()+" “); } response.getWriter().write(” ");

复制 //2.显现之前看过的书 Cookie [] cs = request.getCookies(); Cookie findC = null; if(cs!=null){ for(Cookie c : cs){ if(“last”.equals(c.getName())){ findC = c; } } } if(findC == null){ response.getWriter().write(“没有看过任何书!”); }else{ response.getWriter().write(“您曾经阅读过的书: “); String[] ids = findC.getValue().split(”,”); for(String id : ids){ Book book = BookDao.getBook(id); response.getWriter().write(book.getName()+" "); } } }

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType(“text/html;charset=utf-8”); //1.获取要看的书的id,查询数据库找出书,输出书的细致信息 String id = request.getParameter(“id”); Book book = BookDao.getBook(id); if(book==null){ response.getWriter().write(“找不到这本书!”); return; }else{ response.getWriter().write(" 书名:" +book.getName()+""); response.getWriter().write(" 作者:" +book.getAuth()+""); response.getWriter().write(" 售价:" +book.getPrice()+""); response.getWriter().write(" 出版社:" +book.getPublish()+""); response.getWriter().write(" 描画信息:" +book.getDescription()+""); }

复制 //2.发送cookie保管最后看过的书 // — 1 --> 1 // 1 --2,1 --> 2,1 // 2,1–3,2,1 --> 3,2,1 // 3,2,1 – 4,3,2 --> 4,3,2 // 4,3,2 --3,4,2 --> 3,4,2 String ids = “”;

Cookie [] cs = request.getCookies();
Cookie findC = null;
if(cs!=null){
    for(Cookie c : cs){
        if("last".equals(c.getName())){
            findC = c;
        }
    }
}

if(findC == null){
    //阐明之前没有看过书的记载
    ids += book.getId();
}else{
    //阐明之前有历史看过的书的记载,需求依据历史记载算一个新的记载出来
    String [] olds = findC.getValue().split(",");
    StringBuffer buffer = new StringBuffer();
    buffer.append(book.getId()+",");
    for(int i = 0;i<olds.length && buffer.toString().split(",").length<3 ;i++){
        String old = olds[i];
        if(!old.equals(book.getId())){
            buffer.append(old+",");
        }
    }
    ids = buffer.substring(0, buffer.length()-1);
}

Cookie lastC = new Cookie("last",ids);
lastC.setMaxAge(3600*24*30);
lastC.setPath(request.getContextPath());
response.addCookie(lastC);

}

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