Result Maps collection already contains value for xxxMapper.BaseResultMap錯誤解決辦法
1、問題描述
今天在作項目時,遇到一個錯誤:「Result Maps collection already contains value for com.xxx.dao.tb_userMapper.BaseResultMap」java
最簡單的方法就是將逆向工程在eclipse中移除掉,而後從新import這個逆向工程,而後從新生成mapper文件。mysql
由於若是以前生成過一張相同的表,逆向工程會再生成,致使內容重複,報該表的錯誤。
2、緣由分析
Mybatis-Generator在生成Mapper.xml文件時,會在原來基礎上再生成,致使內容重複。
3、解決辦法
(1)改造Mybatis-generator插件
參考mybatis-generator從新生成代碼時的SQL映射文件覆蓋
(2)將手寫xml文件與自動生成xml文件分離
手寫文件放在src/main/resources/mybatis目錄中
生成文件放在src/main/resources/mybatis-generator目錄中,這樣便於在生成以前手動刪除。
generatorConfig.xml配置:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd" >
<generatorConfiguration>
<classPathEntry
location="D:\Java\maven\repository\mysql\mysql-connector-java\5.1.31\mysql-connector-java-5.1.31.jar" />
<context id="aisSnsTables" targetRuntime="MyBatis3">
<plugin type="org.mybatis.generator.plugins.SerializablePlugin" />
<plugin type="org.mybatis.generator.plugins.EqualsHashCodePlugin" />
<plugin type="org.mybatis.generator.plugins.ToStringPlugin" />
<!-- 抑制生成代碼的註釋 -->
<commentGenerator>
<property name="suppressAllComments" value="true" />
</commentGenerator>
<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/liying" userId="root"
password="root@" />
<javaModelGenerator targetPackage="com.uni2uni.model"
targetProject="src/main/java" />
<sqlMapGenerator targetPackage="/"
targetProject="src/main/resources/mybatis-generator" />
<javaClientGenerator targetPackage="com.uni2uni.dao"
targetProject="src/main/java" type="XMLMAPPER">
<property name="enableSubPackages" value="true" />
</javaClientGenerator>
<table schema="liying" tableName="tb_user" domainObjectName="tb_user" />
<table schema="liying" tableName="tb_admin" domainObjectName="tb_admin" />
<table schema="liying" tableName="tb_role" domainObjectName="tb_role" />
<table schema="liying" tableName="tb_resource" domainObjectName="tb_resource" />
<table schema="liying" tableName="tb_user_role" domainObjectName="tb_user_role" />
<table schema="liying" tableName="tb_role_resource" domainObjectName="tb_role_resource" />
<table schema="liying" tableName="tb_category" domainObjectName="tb_category"/>
<table schema="liying" tableName="tb_shop" domainObjectName="tb_shop"/>
</context>
</generatorConfiguration>
mybatis.xml配置:
<?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>
<typeAliases>
<typeAlias alias="user" type="com.uni2uni.model.tb_user" />
<typeAlias alias="admin" type="com.uni2uni.model.tb_admin" />
<typeAlias alias="role" type="com.uni2uni.model.tb_role" />
<typeAlias alias="resource" type="com.uni2uni.model.tb_resource" />
<typeAlias alias="category" type="com.uni2uni.model.tb_category" />
<typeAlias alias="shop" type="com.uni2uni.model.tb_shop" />
</typeAliases>
<plugins>
<plugin
interceptor="com.github.miemiedev.mybatis.paginator.OffsetLimitInterceptor">
<property name="dialectClass"
value="com.github.miemiedev.mybatis.paginator.dialect.MySQLDialect" />
</plugin>
</plugins>
<mappers>
<mapper resource="mybatis/tb_user.xml" />
<mapper resource="mybatis-generator/tb_userMapper.xml" />
<mapper resource="mybatis/tb_admin.xml" />
<mapper resource="mybatis-generator/tb_adminMapper.xml" />
<mapper resource="mybatis/tb_role.xml" />
<mapper resource="mybatis-generator/tb_roleMapper.xml" />
<mapper resource="mybatis/tb_resource.xml" />
<mapper resource="mybatis-generator/tb_resourceMapper.xml" />
<mapper resource="mybatis/tb_user_role.xml" />
<mapper resource="mybatis-generator/tb_user_roleMapper.xml" />
<mapper resource="mybatis/tb_role_resource.xml" />
<mapper resource="mybatis-generator/tb_role_resourceMapper.xml" />
<mapper resource="mybatis/tb_category.xml" />
<mapper resource="mybatis-generator/tb_categoryMapper.xml" />
<mapper resource="mybatis/tb_shop.xml" />
<mapper resource="mybatis-generator/tb_shopMapper.xml" />
</mappers>git
</configuration>github