Mybaits学习总结1

Posted 2020-08-09 winters1992

http://www.cnblogs.com/xdp-gacl/p/4261895.html

参考了这篇文章搭建了Mybaits环境，原作者有些地方没有标注使用某种编码，我是自学SQL的，所以深知编码格式的坑

1 create database mybatis;
2 use mybatis;
3 CREATE TABLE users(id INT PRIMARY KEY AUTO_INCREMENT, NAME VARCHAR(20), age INT);
4 INSERT INTO users(NAME, age) VALUES(\'孤傲苍狼\', 27);
5 INSERT INTO users(NAME, age) VALUES(\'白虎神皇\', 27);

这里建表的时候 最好指定编码格式为UTF8

CREATE TABLE users(id INT PRIMARY KEY AUTO_INCREMENT, NAME VARCHAR(20), age INT)engine = InnoDB default charset=utf8;//指定引擎为InnoDB 默认缺省编码为 utf8

<?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>
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC" />
            <!-- 配置数据库连接信息 -->
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver" />
                <property name="url" value="jdbc:mysql://localhost:3306/mybaits?characterEncoding=utf8" />
                <property name="username" value="root" />
                <property name="password" value="admin" />
            </dataSource>
        </environment>
    </environments>
    
    <mappers>
    <mapper resource="pw/jonwinters/mybaits/userMapper.xml"/></mappers>
 
</configuration>

<property name="url" value="jdbc:mysql://localhost:3306/mybaits?characterEncoding=utf8" />

这一行也改成utf8这样就不会出现编码错误了