Idea+Mybatis源码构建

准备工作：下载源码包

注意：

 Mybatis源码还依赖于一个父工程mybatis-parent，因此需要一起下载并且需要注意mybatis中引入的mybatis-parent的版本的版本得和自己下载的mybatis-parent的版本一致

mybatis-3-mybatis-3.5.5 源码下载
提取码：5t68
parent-mybatis-parent-31 源码下载
提取码：0z7b

如果想下载其他版本，可以去官方进行选择下载：
GitHub地址：https://github.com/mybatis/mybatis-3

一、将源码安装至本地仓库中

1.1 切换到你下载的mybatis-parent目录

 进入dos窗口

 执行命令：mvn clean install -Dmaven.test.skip=true看到BUILD SUCCESS  代表install成功

1.2 切换到你下载的mybatis源码目录（和1.1中的操作一致）

 执行命令：mvn clean install -Dmaven.test.skip=true

报错：

 pdf插件问题

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-pdf-plugin:1.4:pdf (pdf) on project mybatis: Error during document generation: Error parsing C:\Users\sx\ws\mybatis_lg\ mybatis_four_source\mybatis-3-mybatis-3.5.5\mybatis-3-mybatis-3.5.5\target\pdf\site.tmp\xdoc\getting-started.xml: Error parsing the model: only whitespace content allowed before sta rt tag and not \ufeff (position: COMMENT seen ...rning permissions and\n limitations under the License.\n\n-->\n\ufeff... @18:2) -> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

解决：

 打开pom.xml 文件注释掉 maven-pdf-plugin 插件（可以选择把项目导入到idea中进行相关内容的删除，或者直接使用文本编辑工具进行删除）

重新install一次

 此时再次install，看到BUILD SUCCESS  代表install成功

C:\Users\sx\ws\mybatis_lg\mybatis_four_source\mybatis-3-mybatis-3.5.5\mybatis-3-mybatis-3.5.5>mvn clean install -Dmaven.test.skip=true
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------< org.mybatis:mybatis >-------------------------
[INFO] Building mybatis 3.5.5
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-clean-plugin:3.1.0:clean (default-clean) @ mybatis ---
[INFO] Deleting C:\Users\sx\ws\mybatis_lg\mybatis_four_source\mybatis-3-mybatis-3.5.5\mybatis-3-mybatis-3.5.5\target
[INFO]
[INFO] --- maven-enforcer-plugin:3.0.0-M1:enforce (enforce-java) @ mybatis ---
[INFO]
[INFO] --- jacoco-maven-plugin:0.8.5:prepare-agent (prepare-agent) @ mybatis ---
[INFO] argLine set to -javaagent:C:\\Users\\sx\\sx_tools\\local_maven_repository\\org\\jacoco\\org.jacoco.agent\\0.8.5\\org.jacoco.agent-0.8.5-runtime.jar=destfile=C:\\Users\\sx\\ws
\\mybatis_lg\\mybatis_four_source\\mybatis-3-mybatis-3.5.5\\mybatis-3-mybatis-3.5.5\\target\\jacoco.exec,excludes=org.apache.ibatis.ognl.*:org.apache.ibatis.javassist.*
[INFO]
[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) @ mybatis ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 2 resources to META-INF
[INFO] Copying 4 resources
[INFO]
[INFO] --- maven-compiler-plugin:3.8.0:compile (default-compile) @ mybatis ---
[INFO] Compiling 384 source files to C:\Users\sx\ws\mybatis_lg\mybatis_four_source\mybatis-3-mybatis-3.5.5\mybatis-3-mybatis-3.5.5\target\classes
[INFO] /C:/Users/sx/ws/mybatis_lg/mybatis_four_source/mybatis-3-mybatis-3.5.5/mybatis-3-mybatis-3.5.5/src/main/java/org/apache/ibatis/executor/keygen/Jdbc3KeyGenerator.java: 某些输
入文件使用或覆盖了已过时的 API。
[INFO] /C:/Users/sx/ws/mybatis_lg/mybatis_four_source/mybatis-3-mybatis-3.5.5/mybatis-3-mybatis-3.5.5/src/main/java/org/apache/ibatis/executor/keygen/Jdbc3KeyGenerator.java: 有关详
细信息, 请使用 -Xlint:deprecation 重新编译。
[INFO] /C:/Users/sx/ws/mybatis_lg/mybatis_four_source/mybatis-3-mybatis-3.5.5/mybatis-3-mybatis-3.5.5/src/main/java/org/apache/ibatis/reflection/MetaObject.java: 某些输入文件使用了
未经检查或不安全的操作。
[INFO] /C:/Users/sx/ws/mybatis_lg/mybatis_four_source/mybatis-3-mybatis-3.5.5/mybatis-3-mybatis-3.5.5/src/main/java/org/apache/ibatis/reflection/MetaObject.java: 有关详细信息, 请使
用 -Xlint:unchecked 重新编译。
[INFO]
[INFO] --- license-maven-plugin:3.0:format (default) @ mybatis ---
[INFO] Updating license headers...
[INFO]
[INFO] --- animal-sniffer-maven-plugin:1.17:check (check-java-compat) @ mybatis ---
[INFO] Checking unresolved references to org.codehaus.mojo.signature:java18:1.0
[INFO]
[INFO] --- maven-bundle-plugin:4.1.0:manifest (bundle-manifest) @ mybatis ---
[INFO]
[INFO] --- maven-resources-plugin:3.1.0:testResources (default-testResources) @ mybatis ---
[INFO] Not copying test resources
[INFO]
[INFO] --- maven-compiler-plugin:3.8.0:testCompile (default-testCompile) @ mybatis ---
[INFO] Not compiling test sources
[INFO]
[INFO] --- maven-surefire-plugin:3.0.0-M3:test (default-test) @ mybatis ---
[INFO] Tests are skipped.
[INFO]
[INFO] --- maven-jar-plugin:3.1.1:jar (default-jar) @ mybatis ---
[INFO] Building jar: C:\Users\sx\ws\mybatis_lg\mybatis_four_source\mybatis-3-mybatis-3.5.5\mybatis-3-mybatis-3.5.5\target\mybatis-3.5.5.jar
[INFO]
[INFO] --- maven-shade-plugin:3.2.1:shade (default) @ mybatis ---
[INFO] Including ognl:ognl:jar:3.2.14 in the shaded jar.
[INFO] Including org.javassist:javassist:jar:3.27.0-GA in the shaded jar.
[INFO] Excluding org.slf4j:slf4j-api:jar:1.7.30 from the shaded jar.
[INFO] Excluding org.slf4j:slf4j-log4j12:jar:1.7.30 from the shaded jar.
[INFO] Excluding log4j:log4j:jar:1.2.17 from the shaded jar.
[INFO] Excluding org.apache.logging.log4j:log4j-core:jar:2.13.3 from the shaded jar.
[INFO] Excluding org.apache.logging.log4j:log4j-api:jar:2.13.3 from the shaded jar.
[INFO] Excluding commons-logging:commons-logging:jar:1.2 from the shaded jar.
[INFO] Excluding cglib:cglib:jar:3.3.0 from the shaded jar.
[INFO] Excluding org.ow2.asm:asm:jar:7.1 from the shaded jar.
[INFO] Replacing original artifact with shaded artifact.
[INFO] Replacing C:\Users\sx\ws\mybatis_lg\mybatis_four_source\mybatis-3-mybatis-3.5.5\mybatis-3-mybatis-3.5.5\target\mybatis-3.5.5.jar with C:\Users\sx\ws\mybatis_lg\mybatis_four_s
ource\mybatis-3-mybatis-3.5.5\mybatis-3-mybatis-3.5.5\target\mybatis-3.5.5-shaded.jar
[INFO]
[INFO] --- maven-site-plugin:3.7.1:attach-descriptor (attach-descriptor) @ mybatis ---
[INFO] Skipping because packaging 'jar' is not pom.
[INFO]
[INFO] --- modernizer-maven-plugin:1.7.1:modernizer (modernizer) @ mybatis ---
[INFO]
[INFO] --- maven-install-plugin:3.0.0-M1:install (default-install) @ mybatis ---
[INFO] Installing C:\Users\sx\ws\mybatis_lg\mybatis_four_source\mybatis-3-mybatis-3.5.5\mybatis-3-mybatis-3.5.5\target\mybatis-3.5.5.jar to C:\Users\sx\sx_tools\local_maven_reposito
ry\org\mybatis\mybatis\3.5.5\mybatis-3.5.5.jar
[INFO] Installing C:\Users\sx\ws\mybatis_lg\mybatis_four_source\mybatis-3-mybatis-3.5.5\mybatis-3-mybatis-3.5.5\pom.xml to C:\Users\sx\sx_tools\local_maven_repository\org\mybatis\my
batis\3.5.5\mybatis-3.5.5.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  21.412 s
[INFO] Finished at: 2021-03-18T17:37:35+08:00
[INFO] ------------------------------------------------------------------------C:\Users\sx\ws\mybatis_lg\mybatis_four_source\mybatis-3-mybatis-3.5.5\mybatis-3-mybatis-3.5.5>

二、在idea中导入mybatis-parent和mybatis源码

三、在idea中创建测试项目

3.1 创建新的Module

 此时工程的目录结构如下

3.2 引入mybatis相应依赖，此处得引入我们上面构建的mybatis

 测试项目需要的其他的完整依赖

<dependencies><!--mybatis坐标--><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.5.5</version></dependency><!--mysql驱动坐标--><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.6</version><scope>runtime</scope></dependency><!--单元测试坐标--><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.12</version><scope>test</scope></dependency><!--⽇志坐标--><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.12</version></dependency></dependencies><build><!--修改pom文件中加上此resources即可解决--><resources><resource><directory>src/main/java</directory><includes><include>**/*.xml</include></includes></resource></resources></build>

3.3 新建Mapper接口和对应的映射文件

 AccountMapper.java

public interface AccountMapper {List<Account> findAll() throws IOException;Account findByCondition(Account account) throws IOException;List<Account> findByIds(int [] ids) throws IOException;Account findById(int id) throws IOException;
}

 AccountMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd"><mapper namespace="com.dabing.source.mapper.AccountMapper"><select id="findAll" resultType="account">select * from Account</select><!--动态sql--><select id="findByCondition" parameterType="account" resultType="account">select * from Account<where><if test="id!=0">and id=#{id}</if><if test="username!=null">and username=#{username}</if></where></select><!--动态sql:循环执⾏sql的拼接操作--><select id="findByIds" parameterType="list" resultType="account">select * from Account<where><foreach collection="array" open="id in(" close=")" item="id"separator=",">#{id}</foreach></where></select><!--抽取sql⽚段简化编写--><sql id="selectAccount" >select * from Account</sql><select id="findById" parameterType="int" resultType="account"><include refid="selectAccount"></include> where id=#{id}</select></mapper>

3.4 新建mybatis配置文件，在resource目录下创建sqlMapConfig.xml文件：

 sqlMapConfig.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><!--给实体类的全限定类名给别名--><typeAliases><!--批量起别名：该包下所有的类的本身的类名：别名还不区分大小写--><package name="com.dabing.source.pojo"/></typeAliases><!--environments:运行环境--><environments default="development"><environment id="development"><!--当前事务交由JDBC进行管理--><transactionManager type="JDBC"></transactionManager><!--当前使用mybatis提供的连接池--><dataSource type="POOLED"><property name="driver" value="com.mysql.jdbc.Driver"/><property name="url" value="jdbc:mysql:///zdy_mybatis"/><property name="username" value="root"/><property name="password" value="root"/></dataSource></environment></environments><!--引入映射配置文件--><mappers><package name="com.dabing.source.mapper"/></mappers></configuration>

3.5 编写测试类测试

 @Testpublic void test() throws IOException {InputStream resourceAsStream =Resources.getResourceAsStream("sqlMapConfig.xml");SqlSessionFactory sqlSessionFactory = newSqlSessionFactoryBuilder().build(resourceAsStream);SqlSession sqlSession = sqlSessionFactory.openSession();//获得MyBatis框架⽣成的UserMapper接⼝的实现类AccountMapper accountMapper = sqlSession.getMapper(AccountMapper.class);List<Account> accountMapperAll = accountMapper.findAll();for (Account account : accountMapperAll) {System.out.println(account);}sqlSession.close();}

 执行：报错

 解决：

 再次执行：执行成功