SpringMVC-ssm案例-2023-04-23-2

Controller其他功能

package com.feijian.controller;

import com.feijian.pojo.Books;
import com.feijian.service.BookService;
import org.apache.ibatis.annotations.Param;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import java.util.ArrayList;
import java.util.List;

@Controller
@RequestMapping("/book")
public class BookController {
    //controller 调 service 层
    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;

    //查询全部书籍，并返回一个书籍展示页面
    @RequestMapping("/allBook")
    public String list(Model model){
        List<Books> booksList = bookService.queryAllBook();
        model.addAttribute("list",booksList);
        return "allBook";
    }

    //跳转到增加书籍页面
    @RequestMapping("/toAddBook")
    public String toAddPaper(){
        return "addBook";
    }
    //添加书籍请求
    @RequestMapping("/addBook")
    public String addBook(Books books){
        System.out.println("addBook ==> "+books);
        bookService.addBook(books);
        return "redirect:/book/allBook";    //重定向到@RequestMapping("allBook")请求中
    }

    //跳转到修改页面
    @RequestMapping("/toUpdateBook/{bookID}")
    public String toUpdatePaper(@PathVariable("bookID") int id, Model model){
        Books book = bookService.queryBookById(id);
        model.addAttribute("QBook",book);
        return "updateBook";
    }
    //修改书籍
    @RequestMapping("/updateBook")
    public String updateBook(Books books){
        System.out.println("updateBook ==> "+books);
        bookService.updateBook(books);
        return "redirect:/book/allBook";
    }

    //删除书籍
    @RequestMapping("/deleteBook/{bookID}")
    public String deleteBook(@PathVariable("bookID") int id){
        bookService.deleteBookById(id);
        return "redirect:/book/allBook";
    }

    //搜索书籍
    @RequestMapping("/queryBook")
    public String queryBook( String queryBookName, Model model){
        List<Books> list = new ArrayList<Books>();
        Books books = bookService.queryBookByName(queryBookName);
        list.add(books);
        //未搜索到返回全部书籍，并返回未查到错误提示
        if(books == null){
            list = bookService.queryAllBook();
            model.addAttribute("error","未查到!");
        }else {
            model.addAttribute("list",list);
            //return "allBook";
        }
        return "allBook";
    }
}

addBook.jsp 

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
  <title>添加书籍</title>
  <%--BootStrap美化界面--%>
  <!-- 引入 Bootstrap -->
  <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
  <div class="row clearfix">
    <div class="col-md-12 column">
      <div class="page-header">
        <h1>
          <small>新增书籍</small>
        </h1>
      </div>
    </div>
  </div>
  <form action="${pageContext.request.contextPath}/book/addBook" method="post">
    <div class="form-group">
      <label>书籍名称：</label>
      <input type="text" class="form-control" name="bookName" required>   <%--required:必须有内容才能提交--%>
    </div>
    <div class="form-group">
      <label>书籍数量：</label>
      <input type="text" class="form-control" name="bookCounts" required>
    </div>
    <div class="form-group">
      <label>书籍描述：</label>
      <input type="text" class="form-control" name="detail" required>
    </div>
    <div class="form-group">
      <input type="submit" class="form-control" value="添加">
    </div>
  </form>
</div>
</body>
</html>

</body>
</html>

 updateBook.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
  <title>修改书籍</title>
  <%--BootStrap美化界面--%>
  <!-- 引入 Bootstrap -->
  <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
  <div class="row clearfix">
    <div class="col-md-12 column">
      <div class="page-header">
        <h1>
          <small>修改书籍</small>
        </h1>
      </div>
    </div>
  </div>
  <form action="${pageContext.request.contextPath}/book/updateBook" method="post">
    <%--前端传递隐藏域--%>
    <input type="hidden" name="bookID" value="${QBook.bookID}" >
    <div class="form-group">
      <label>书籍名称：</label>
      <input type="text" class="form-control" name="bookName" value="${QBook.bookName}" required>   <%--required:必须有内容才能提交--%>
    </div>
    <div class="form-group">
      <label>书籍数量：</label>
      <input type="text" class="form-control" name="bookCounts" value="${QBook.bookCounts}" required>
    </div>
    <div class="form-group">
      <label>书籍描述：</label>
      <input type="text" class="form-control" name="detail" value="${QBook.detail}" required>
    </div>
    <div class="form-group">
      <input type="submit" class="form-control" value="修改">
    </div>
  </form>
</div>
</body>
</html>

 

posted @ 2023-04-23 21:29  Rui2022  阅读(10)  评论(0)  编辑  收藏  举报