说明:( Spring Boot CRUD )
- 主要实现了图书的增删改查、管理员登录验证,其他还在开发。
- Spring Boot主要整合了Mybatis(注解方式)、Web、Thymeleaf
- 项目地址,点击前往
效果:
1.查询所有的书本

2.点击编辑,修改书籍信息

3.提交后反馈

4.返回查看信息已经被修改

5.删除点击按钮直接删除
6.点击添加书本按钮,添加信息

7.输入完成后提交,反馈信息

8.返回主界面,查看添加已经成功

核心代码:
Model:
User:
package com.springboot.book.model;
public class Book {
private int id;
private String name;
private String author;
public Double getPrice() {
return price;
}
public void setPrice(Double price) {
this.price = price;
}
private Double price;
public String getImage() {
return image;
}
public void setImage(String image) {
this.image = image;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
private String image;
private String description;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
@Override
public String toString() {
return "Book{" +
"id=" + id +
", name='" + name + '\'' +
", author='" + author + '\'' +
", price='" + price + '\'' +
", image='" + image + '\'' +
", description='" + description + '\'' +
'}';
}
}
Book:
package com.springboot.book.model;
public class User {
private int id;
private String name;
private String email;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
Dao:
Userdao(现在只有登录时使用了)
package com.springboot.book.dao;
import com.springboot.book.model.User;
import com.sun.org.apache.xpath.internal.operations.Bool;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import java.util.List;
public interface UserDao {
String table_name="user";
String insert_filed="id,name,email";
String select_field = " id, " + insert_filed;
@Select({"select * from ",table_name})
List<User> selectAll();
// 添加user
@Insert({"inset into",table_name,"values(#{name},#{email)"})
User addUser(User user);
// 根据id查询用户
@Select({"select",select_field,"from",table_name,"where id=#{id}"})
User selectById(int id);
// 根据用户姓名查询用户信息
@Select({"select",select_field,"from",table_name,"where name=#{name}"})
User selectByName(String name);
// 根据用户邮箱查询用户信息
@Select({"select",select_field,"from",table_name,"where email=#{email}"})
User selectByEmail(String email);
}
BookDao
package com.springboot.book.dao;
import com.springboot.book.model.Book;
import com.sun.org.apache.xpath.internal.operations.Bool;
import org.apache.ibatis.annotations.*;
import org.springframework.context.annotation.Bean;
import java.util.List;
@Mapper
public interface BookDao {
String table_name="book";
String insert_filed="name,author,price,image,description";
String select_field = " id, status, " + insert_filed;
//查询全部书籍
@Select({"select * from",table_name})
List<Book> selectAll();
//根据name查找id
@Select({"select id from",table_name,"where name=#{name}"})
Book selectBookByName(String Name);
//根据id查找全部信息
@Select({"select * from",table_name,"where id=#{id}"})
Book selectBookById(Integer id);
//根据id删除指定书籍
@Delete({"delete ","from",table_name,"where id=#{id}"})
void deleteBookById(int id);
//根据指定的书名删除书籍
@Delete({"delete ","from",table_name,"where name=#{name}"})
void deleteBookByName(String name);
//添加新的书籍
@Insert({"insert into",table_name,"(",insert_filed,")","values(#{name},#{author},#{price},#{image},#{description})"})
void addBook(Book book);
@Update({"update ", table_name, " set name=#{name},author=#{author},price=#{price},image=#{image},description=#{description} where id=#{id}"})
void updateBookById(@Param("id") int id,@Param("name") String name,@Param("author") String author,
@Param("price") Double price,@Param("image") String image,@Param("description") String description);
}
Controller:
bookController:
package com.springboot.book.controller.modelcontroller;
import com.springboot.book.dao.BookDao;
import com.springboot.book.model.Book;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;
import java.util.List;
@Controller
public class bookController {
@Autowired
private BookDao bookDao;
@RequestMapping("/book")
public String queryAll(Model model){
List<Book> books =bookDao.selectAll();
model.addAttribute("books" ,books);
return "booklist";
}
@GetMapping("/book/del/{id}")
public String deleteBook(@PathVariable("id") Integer Id,Model model){
bookDao.deleteBookById(Id);
List<Book> books =bookDao.selectAll();
model.addAttribute("books" ,books);
return "redirect:/book";
}
@GetMapping("/book/predit/{id}")
public String preUpdateBook(@PathVariable("id") Integer Id,Model model){
Book book =bookDao.selectBookById(Id);
model.addAttribute("book" ,book);
return "editbook";
}
@PostMapping("/book/editok/{id}")
public String UpdateBook(@PathVariable("id") Integer Id,
@RequestParam("name") String name,
@RequestParam("author") String author,
@RequestParam("price")String price,
@RequestParam("image") String image,
@RequestParam("description") String description){
System.out.println(Id+name+author+price+image+description);
Double Price = Double.parseDouble(price);
bookDao.updateBookById(Id,name,author,Price,image,description);
return "updatesuccess";
}
@RequestMapping("/book/look/return")
public String reBack()
{
return "redirect:/book";
}
@RequestMapping("/book/addbook")
public String openAddBook(){
return "newbook";
}
@PostMapping("/book/newbook")
public String addBook(
@RequestParam("name") String name,
@RequestParam("author") String author,
@RequestParam("price") String price,
@RequestParam("image") String image,
@RequestParam("description") String description)
{
Double Price =Double.parseDouble(price);
Book book = new Book();
book.setName(name);
book.setAuthor(author);
book.setPrice(Price);
book.setImage(image);
book.setDescription(description);
bookDao.addBook(book);
return "addsuccess";
}
}
LoginController:
package com.springboot.book.controller.pagecontroller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.thymeleaf.util.StringUtils;
import javax.servlet.http.HttpSession;
import java.util.Map;
@Controller
public class LoginController {
@RequestMapping(value = "user/login",method = RequestMethod.POST)
// @PostMapping(value = "user/login")
public String login(@RequestParam("username")String username,
@RequestParam("password")String password,
Map<String, Object> map, HttpSession httpSession){
if(!StringUtils.isEmpty(username)&&"123456".equals(password))
{httpSession.setAttribute("user",username);
return "redirect:/mainui.html";
}
else
{
map.put("mes","用户名或者密码错误");
return "login";
}
}
}
总结:
上面就是主要代码,我没有放前端页面代码,需要的点击项目地址可以下载全部代码。
在写的过程中遇到了不少问题,基本都是百度解决的,遇到问题多百度一下,基本都能解决。
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