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:

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：

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

 
        
            org.springframework.boot
            spring-boot-starter-web
        
        
        
            org.springframework.boot
            spring-boot-starter-data-rest
        
        
        
            org.mybatis.spring.boot
            mybatis-spring-boot-starter
        
        
            mysql
            mysql-connector-java
        
        
        
            com.alibaba
            druid
        

DAO类

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

DAO类依赖

        
            org.mybatis.spring.boot
            mybatis-spring-boot-starter
        

目录结构：