SSM整合(功能模块开发)

package com.itheima.domain;

public class Book {
    private Integer id;
    private String type;
    private String name;
    private String description;

    @Override
    public String toString() {
        return "Book{" +
                "id=" + id +
                ", type='" + type + '\'' +
                ", name='" + name + '\'' +
                ", description='" + description + '\'' +
                '}';
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }
}

package com.itheima.dao;

import com.itheima.domain.Book;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;

import java.util.List;

public interface BookDao {

    //这两种方法都可以使用
    //表后面跟的是字段名称，values后面跟的是Book里的属性名
//    @Insert("insert into tbl_book values (null, #{type}, #{name}, #{description})")
    @Insert("insert into tbl_book (type, name, description) values (#{type},#{name}#{description})")
    public void save(Book book);

    @Update("update tbl_book set type = #{type},name = #{name},description = #{description} where id = #{id}")
    public void update(Book book);

    @Delete("delete from tbl_book where id = #{id}")
    public void delete(Integer id);

    @Select("select * from tbl_book where id = #{id}")
    public Book getById(Integer id);

    @Select("select * from tbl_book")
    public List<Book> getAll();
}

package com.itheima.service;

import com.itheima.domain.Book;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Select;

import java.util.List;

public interface BookService {

    /**
     * 保存
     * @param book
     * @return
     */
    public boolean save(Book book);

    /**
     * 修改
     * @param book
     * @return
     */
    public boolean update(Book book);

    /**
     * 根据id删除
     * @param id
     * @return
     */
    public boolean delete(Integer id);

    /**
     * 根据id查询
     * @param id
     * @return
     */
    public Book getById(Integer id);

    /**
     * 查询所有
     * @return
     */
    public List<Book> getAll();
}

package com.itheima.service.impl;

import com.itheima.dao.BookDao;
import com.itheima.domain.Book;
import com.itheima.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service//配置bean
public class BookServiceImpl implements BookService{
   @Autowired//自动装配
   private BookDao bookDao;

    @Override
    public boolean save(Book book) {
        bookDao.save(book);
        return true;
    }

    @Override
    public boolean update(Book book) {
        bookDao.update(book);
        return true;
    }

    @Override
    public boolean delete(Integer id) {
        bookDao.delete(id);
        return true;
    }

    @Override
    public Book getById(Integer id) {
        return bookDao.getById(id);
    }

    @Override
    public List<Book> getAll() {
        return bookDao.getAll();
    }
}

package com.itheima.controller;


import com.itheima.domain.Book;
import com.itheima.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping("/books")
public class BookController {
    /**
     * @RequestParam 用于接收url地址传参或者表单传参
     * @RequestBody 用于接收json数据
     * @PathVariable 用于接收路径参数，使用{参数名称}描述路径参数
     *
     * 应用
     * 后期开发中，发送请求参数超过1个时，以json格式为主，@RequestBody应用较广
     * 如果发送非json格式数据，选用@RequestParam接收请求参数
     * 采用RESTful进行开发，当参数较少时，例如1个，可以采用@PathVariable接收请求路径变量，通常用于传递id值
     */

    @Autowired
    private BookService bookService;

    @PostMapping
    public boolean save(@RequestBody Book book) {
        return bookService.save(book);
    }

   @PutMapping
    public boolean update(@RequestBody Book book) {
        return bookService.update(book);
    }

    @DeleteMapping("/{id}")
    public boolean delete(@PathVariable Integer id) {
        return bookService.delete(id);
    }

    @GetMapping("/{id}")
    public Book getById(@PathVariable Integer id) {
        return bookService.getById(id);
    }

    @GetMapping
    public List<Book> getAll() {
        return bookService.getAll();
    }
}