最简单的mybatis增删改查样例

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最简单的mybatis增删改查样例
Book.java

package com.bookstore.app;
import java.io.Serializable;
public class Book implements Serializable {
private static final long serialVersionUID = 233559895466038160L;
private String isbn;
private String name;
private String price;
public String getIsbn() {
return isbn;
}
public void setIsbn(String isbn) {
this.isbn = isbn;
}
public String getPrice() {
return price;
}
public void setPrice(String price) {
this.price = price;
}
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
@Override
public String toString() {
return "BookName: " + this.name + ", price: " + this.price;
}
}

mybatis-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<settings>
<setting name="lazyLoadingEnabled" value="false" />
</settings>
<typeAliases>
<typeAlias alias="Book" type="com.bookstore.app.Book" />
</typeAliases>
<environments default="development">
<environment id="development">
<transactionManager type="JDBC" />
<dataSource type="POOLED">
<property name="driver" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/mybatis" />
<property name="username" value="root" />
<property name="password" value="root" />
</dataSource>
</environment>
</environments>
<mappers>
<mapper resource="com/bookstore/config/bookMapper.xml" />
</mappers>
</configuration>

bookMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.bookstore.app.bookMapper">
<select id="getBookByName" resultType="Book" parameterType="string">
select *
from book
where name=#{name}
</select>
<insert id="insertBook" parameterType="Book">
insert into book(isbn, name, price)
value(#{isbn}, #{name}, #{price})
</insert>
<update id="updateBook" parameterType="Book">
update book
set
name=#{name},
price=#{price}
where isbn=#{isbn}
</update>
<delete id="deleteBook" parameterType="String">
delete from book where name=#{name}
</delete>
</mapper>

BookApp.java

package com.bookstore.app;
import java.io.IOException;
import java.io.Reader;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
public class BookApp {
public static void main(String[] args) throws IOException {
String resource = "com/bookstore/config/mybatis-config.xml";
Reader reader = Resources.getResourceAsReader(resource);
SqlSessionFactory sessionFactory = new SqlSessionFactoryBuilder()
.build(reader);
SqlSession session = sessionFactory.openSession();
//查询
Book book = (Book) session.selectOne(
"com.bookstore.app.bookMapper.getBookByName", "Spring In Action");
System.out.println(book.toString());
//修改
book.setName("Spring In Action 2ed Edition");
book.setPrice("59");
session.update("com.bookstore.app.bookMapper.updateBook", book);
//插入
Book newBook = new Book();
newBook.setIsbn("ISBN978-7-121-10577-7");
newBook.setName("人人都是产品经理");
newBook.setPrice("45");
session.insert("com.bookstore.app.bookMapper.insertBook", newBook);
//删除
session.delete("com.bookstore.app.bookMapper.deleteBook", "Struts In Action");
session.commit();
}
}