springboot多模块化整合mybatis，出现mapper自动注入失败问题

问题：

启动类添加@MapperScan或@ComponentScan，mapper类添加@Mapper或@Repository

==> Consider defining a bean of type 'com.ten.mapper.UserMapper' in your configuration.

或

Property 'sqlSessionFactory' or 'sqlSessionTemplate' are required in spring mock mvc test for spring boot with mybatis

解决：

手动装配dataSource

启动类:

[code]package com.ten;

import com.alibaba.druid.pool.DruidDataSource;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.core.env.Environment;
import org.springframework.stereotype.Component;

import javax.sql.DataSource;

@SpringBootApplication
@EnableAutoConfiguration(exclude = {DataSourceAutoConfiguration.class})
@MapperScan("com.ten.mapper")
class LcWebApplication {
public static void main(String[] args) {
SpringApplication.run(LcWebApplication.class, args);
}

@Autowired
private Environment env;

//destroy-method="close"的作用是当数据库连接不使用的时候,就把该连接重新放到数据池中,方便下次使用调用.
@Bean
public DataSource dataSource() {
DruidDataSource dataSource = new DruidDataSource();
dataSource.setUrl(env.getProperty("spring.datasource.url"));
dataSource.setUsername(env.getProperty("spring.datasource.username"));//用户名
dataSource.setPassword(env.getProperty("spring.datasource.password"));//密码
dataSource.setDriverClassName(env.getProperty("spring.datasource.driver-class-name"));
dataSource.setInitialSize(2);//初始化时建立物理连接的个数
dataSource.setMaxActive(20);//最大连接池数量
dataSource.setMinIdle(0);//最小连接池数量
dataSource.setMaxWait(60000);//获取连接时最大等待时间，单位毫秒。
dataSource.setValidationQuery("SELECT 1");//用来检测连接是否有效的sql
dataSource.setTestOnBorrow(false);//申请连接时执行validationQuery检测连接是否有效
dataSource.setTestWhileIdle(true);//建议配置为true，不影响性能，并且保证安全性。
dataSource.setPoolPreparedStatements(false);//是否缓存preparedStatement，也就是PSCache
return dataSource;
}

}

启动类配置文件：

[code]spring:
datasource:
name: test
url: jdbc:mysql://localhost:3306/db
username: root
password: root
# 使用druid数据源
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.jdbc.Driver
filters: stat
maxActive: 20
initialSize: 1
maxWait: 60000
minIdle: 1
timeBetweenEvictionRunsMillis: 60000
minEvictableIdleTimeMillis: 300000
validationQuery: select 'x'
testWhileIdle: true
testOnBorrow: false
testOnReturn: false
poolPreparedStatements: true
maxOpenPreparedStatements: 20

mybatis:
mapperLocations: classpath*:mapper/*.xml
typeAliasesPackage: com.ten.entity

启动类依赖

[code] <!--web-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--rest-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-rest</artifactId>
</dependency>
<!-- mybatis -->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
</dependency>

DAO类

[code]@Repository
public interface UserMapper {
String getTest(String test);
}

DAO类依赖

[code]<!-- mybatis -->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
</dependency>

目录结构：