最简单的mybatis增删改查样例
最简单的mybatis增删改查样例?
Book.java?
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package com.bookstore.app;
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import java.io.Serializable;
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public class Book implements Serializable {
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private static final long serialVersionUID = 233559895466038160L;
private String isbn;
private String name;
private String price;
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public String getIsbn() {
return isbn;
}
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public void setIsbn(String isbn) {
this.isbn = isbn;
}
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public String getPrice() {
return price;
}
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public void setPrice(String price) {
this.price = price;
}
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public void setName(String name) {
this.name = name;
}
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public String getName() {
return name;
}
@Override
public String toString() {
return "BookName: " + this.name + ", price: " + this.price;
}
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}
<?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">
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<configuration>
? ? <settings>
? ? ? ? <setting name="lazyLoadingEnabled" value="false" />
? ? </settings>
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? ? <typeAliases>
? ? ? ? <typeAlias alias="Book" type="com.bookstore.app.Book" />
? ? </typeAliases>
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? ? <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>
<?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">
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<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>
package com.bookstore.app;
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import java.io.IOException;
import java.io.Reader;
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import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
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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();
}
}
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<select id="selectAll" resultType="java.util.Map">?
select a.title,a.content?
from tab_test a?
where a.id = 't123'?
</select>?
其中 a.content 是clob的?
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