运行项目报错

Error querying database. Cause: java.sql.SQLException: No suitable driver found for http://www.example.com

org.apache.ibatis.exceptions.PersistenceException:

### Error querying database.  Cause: java.sql.SQLException: No suitable driver found for http://www.example.com

### The error may exist in com/pro/dao/UserMapper.xml

### The error may involve com.pro.dao.UserMapper.getUserList

### The error occurred while executing a query

### Cause: java.sql.SQLException: No suitable driver found for http://www.example.com

我的 properties 配置文件是这样的

driver=com.mysql.jdbc.Driver

url=jdbc:mysql://localhost:3306/mybatis?useSSL=true&useUnicode=true&characterEncoding=UTF-8

username=root

password=123456

<configuration>

    <properties resource="db.properties"/>

    <environments default="development">

        <environment id="development">

            <transactionManager type="JDBC"/>

            <dataSource type="POOLED">

                <property name="driver" value="${driver}"/>

                <property name="url" value="${url}"/>

                <property name="username" value="${username}"/>

                <property name="password" value="${password}"/>

            </dataSource>

        </environment>

    </environments>

</configuration>

我查看了一下编译后的文件，发现我的 mybatis-config.xml 文件中的 ${url} 被编译成了 http://www.example.com

url 这个变量被别的配置覆盖了，直接把 url 改成 jdbcUrl，运行项目问题解决

<?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>

    <properties resource="db.properties"/>

    <environments default="development">

        <environment id="development">

            <transactionManager type="JDBC"/>

            <dataSource type="POOLED">

                <property name="driver" value="${driver}"/>

                <property name="url" value="${jdbcUrl}"/>

                <property name="username" value="${username}"/>

                <property name="password" value="${password}"/>

            </dataSource>

        </environment>

    </environments>

</configuration>