解决mybatis手写xml元素没有提示问题

去Maven Dependencies中找到mybatis的jar包

D:\apache-maven-3.0.5\work\org\mybatis\mybatis\3.2.8

复制到你想要的目录，解压

D:\dtd\org\apache\ibatis\builder\xml
去builder\xml目录下

如在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>
    <!--配置开发环境 -->
    <environments default="development">
        <environment id="development">
            <!--事务管理环境 -->
            <transactionManager type="JDBC" />
            <!--配置数据源 -->
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver" />
                <property name="url" value="jdbc:mysql:///test" />
                <property name="username" value="root" />
                <property name="password" value="g" />
            </dataSource>
        </environment>
    </environments>
    <mappers>
        <mapper resource="mapper/ProductMapper.xml" />
    </mappers>
</configuration>

的头中，拷贝

http://mybatis.org/dtd/mybatis-3-config.dtd

选择URI
location选FileSystem

地址D:\dtd\org\apache\ibatis\builder\xml
选择你的mybatis-3-mapper.dtd

同理配置config.dtd如下