使用Mybatis-Plus时的SqlSessionFactory问题及处理

使用Mybatis-Plus的SqlSessionFactory问题

前些日子工作中出现一个问题，项目中使用了MybatisPlus，然后出现了一个问题，Druid的其他的配置都可以正常使用，但是配置的SqlSessionFactory这个bean不能被加载，我在这个bean中加载的mybatis-config.xml文件也不能被加载，因为代码里使用了 * 进行数据库的自动分页，找到问题后在这里mark一下。

其实这里不能加载的原因是因为MybatisPlus中自定义了MybatisSqlSessionFactoryBean这个类，而这个类是实现了接口FactoryBean<SqlSessionFactory>, InitializingBean, ApplicationListener<ApplicationEvent>，而在mybatis中有一个类也实现了这些接口，SqlSessionFactoryBean，所以在mybatisplus的配置文件中配置SqlSessionFactoryBean时需要换成mybatisplus中自定义的这个类MyBatisSqlSessionFactoryBean，并在类中加载对应的mybatis-config.xml文件。

贴一下这两个类的源码，看一眼就明白了

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
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package org.mybatis.spring;
import java.io.IOException;
import java.sql.SQLException;
import java.util.Properties;
import javax.sql.DataSource;
import org.apache.ibatis.builder.xml.XMLConfigBuilder;
import org.apache.ibatis.builder.xml.XMLMapperBuilder;
import org.apache.ibatis.cache.Cache;
import org.apache.ibatis.executor.ErrorContext;
import org.apache.ibatis.io.VFS;
import org.apache.ibatis.logging.Log;
import org.apache.ibatis.logging.LogFactory;
import org.apache.ibatis.mapping.DatabaseIdProvider;
import org.apache.ibatis.mapping.Environment;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.reflection.factory.ObjectFactory;
import org.apache.ibatis.reflection.wrapper.ObjectWrapperFactory;
import org.apache.ibatis.session.Configuration;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.apache.ibatis.transaction.TransactionFactory;
import org.apache.ibatis.type.TypeHandler;
import org.mybatis.spring.transaction.SpringManagedTransactionFactory;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.core.NestedIOException;
import org.springframework.core.io.Resource;
import org.springframework.jdbc.datasource.TransactionAwareDataSourceProxy;
import org.springframework.util.Assert;
import org.springframework.util.ObjectUtils;
import org.springframework.util.StringUtils;
public class SqlSessionFactoryBean implements FactoryBean<SqlSessionFactory>, InitializingBean, ApplicationListener<ApplicationEvent> {
   private static final Log LOGGER = LogFactory.getLog(SqlSessionFactoryBean.class);
   private Resource configLocation;
   private Configuration configuration;
   private Resource[] mapperLocations;
   private DataSource dataSource;
   private TransactionFactory transactionFactory;
   private Properties configurationProperties;
   private SqlSessionFactoryBuilder sqlSessionFactoryBuilder = new SqlSessionFactoryBuilder();
   private SqlSessionFactory sqlSessionFactory;
   private String environment = SqlSessionFactoryBean.class.getSimpleName();
   private boolean failFast;
   private Interceptor[] plugins;
   private TypeHandler<?>[] typeHandlers;
   private String typeHandlersPackage;
   private Class<?>[] typeAliases;
   private String typeAliasesPackage;
   private Class<?> typeAliasesSuperType;
   private DatabaseIdProvider databaseIdProvider;
   private Class<? extends VFS> vfs;
   private Cache cache;
   private ObjectFactory objectFactory;
   private ObjectWrapperFactory objectWrapperFactory;
   public SqlSessionFactoryBean() {
   }
    。。。。。。
}

还有MybatisSqlSessionFactoryBean的

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
//
package com.baomidou.mybatisplus.spring;
import com.baomidou.mybatisplus.MybatisConfiguration;
import com.baomidou.mybatisplus.MybatisXMLConfigBuilder;
import com.baomidou.mybatisplus.entity.GlobalConfiguration;
import com.baomidou.mybatisplus.enums.IEnum;
import com.baomidou.mybatisplus.exceptions.MybatisPlusException;
import com.baomidou.mybatisplus.handlers.EnumTypeHandler;
import com.baomidou.mybatisplus.mapper.SqlRunner;
import com.baomidou.mybatisplus.toolkit.GlobalConfigUtils;
import com.baomidou.mybatisplus.toolkit.PackageHelper;
import java.sql.SQLException;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Properties;
import java.util.Set;
import javax.sql.DataSource;
import org.apache.ibatis.builder.xml.XMLMapperBuilder;
import org.apache.ibatis.cache.Cache;
import org.apache.ibatis.executor.ErrorContext;
import org.apache.ibatis.io.VFS;
import org.apache.ibatis.logging.Log;
import org.apache.ibatis.logging.LogFactory;
import org.apache.ibatis.mapping.DatabaseIdProvider;
import org.apache.ibatis.mapping.Environment;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.reflection.factory.ObjectFactory;
import org.apache.ibatis.reflection.wrapper.ObjectWrapperFactory;
import org.apache.ibatis.session.Configuration;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.apache.ibatis.transaction.TransactionFactory;
import org.apache.ibatis.type.EnumOrdinalTypeHandler;
import org.apache.ibatis.type.TypeHandler;
import org.apache.ibatis.type.TypeHandlerRegistry;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.transaction.SpringManagedTransactionFactory;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.core.NestedIOException;
import org.springframework.core.io.Resource;
import org.springframework.jdbc.datasource.TransactionAwareDataSourceProxy;
import org.springframework.util.Assert;
import org.springframework.util.ObjectUtils;
import org.springframework.util.StringUtils;
public class MybatisSqlSessionFactoryBean implements FactoryBean<SqlSessionFactory>, InitializingBean, ApplicationListener<ApplicationEvent> {
   private static final Log LOGGER = LogFactory.getLog(SqlSessionFactoryBean.class);
   private Resource configLocation;
   private Configuration configuration;
   private Resource[] mapperLocations;
   private DataSource dataSource;
   private TransactionFactory transactionFactory;
   private Properties configurationProperties;
   private SqlSessionFactoryBuilder sqlSessionFactoryBuilder = new SqlSessionFactoryBuilder();
   private SqlSessionFactory sqlSessionFactory;
   private String environment = MybatisSqlSessionFactoryBean.class.getSimpleName();
   private boolean failFast;
   private Interceptor[] plugins;
   private TypeHandler<?>[] typeHandlers;
   private String typeHandlersPackage;
   private Class<?>[] typeAliases;
   private String typeAliasesPackage;
   private String typeEnumsPackage;
   private Class<?> typeAliasesSuperType;
   private DatabaseIdProvider databaseIdProvider;
   private Class<? extends VFS> vfs;
   private Cache cache;
   private ObjectFactory objectFactory;
   private ObjectWrapperFactory objectWrapperFactory;
   private GlobalConfiguration globalConfig = GlobalConfigUtils.defaults();
   public MybatisSqlSessionFactoryBean() {
   }
    。。。。。。
}

springboot+mybatis-plus报错Property'sqlSessionFactory'or'sqlSessionTemplate'are required

报错信息：

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘TBaseAuthController': Unsatisfied dependency expressed through field ‘tBaseAuthService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘TBaseAuthServiceImpl': Unsatisfied dependency expressed through field ‘baseMapper'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘TBaseAuthMapper' defined in file [D:\浏览器下载\myframe\yss-server\target\classes\com\yss\cn\modules\mapper\TBaseAuthMapper.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Property ‘sqlSessionFactory' or ‘sqlSessionTemplate' are required
…
Caused by: java.lang.IllegalArgumentException: Property ‘sqlSessionFactory' or ‘sqlSessionTemplate' are required

解决方案：

添加jar包：

<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>

来源：https://blog.csdn.net/canyun9798/article/details/83243416