高并发架构实战(三) Spring Boot 集成 mybatis-plus
转载请标注原文地址：https://blog.csdn.net/lilyssh/article/details/82753716
Spring Boot 2.0.4 集成 mybatisplus-spring-boot-starter 1.0.5 。项目源码地址
1. 初始化工程
工程 user-provider的结构为：
$ tree -I target
.
├── pom.xml
└── src
└── main
├── java
│ └── cn
│ └── lilyssh
│ └── user
│ └── provider
│ ├── UserProviderApplication.java
│ ├── dao
│ │ ├── entity
│ │ │ └── UserEntity.java
│ │ ├── mapper
│ │ │ └── UserMapper.java
│ │ └── repository
│ │ └── UserRepository.java
│ └── service
│ └── UserService.java
└── resources
└── application.yml
2. 添加依赖
在user-provider工程中打开pom.xml加入以下依赖。
引入mybatis-plus-boot-starter依赖：
<dependency>
<groupId>com.baomidougroupId>
<artifactId>mybatis-plus-boot-starterartifactId>
<version>3.0.1version>
dependency>
3. 编码
(1) 编写Mapper类，要加@Mapper，继承BaseMapper。
package cn.lilyssh.user.provider.dao.mapper;
import cn.lilyssh.user.provider.dao.entity.UserEntity;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.apache.ibatis.annotations.Mapper;
@Mapper
public interface UserMapper extends BaseMapper<UserEntity> {
}
(2) 编写repository类，继承ServiceImpl
package cn.lilyssh.user.provider.dao.repository;
import cn.lilyssh.user.provider.dao.entity.UserEntity;
import cn.lilyssh.user.provider.dao.mapper.UserMapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
@Slf4j
@Component
public class UserRepository extends ServiceImpl<UserMapper, UserEntity> {
}
(3) 添加接口实现类，调用mybatis plus提供的方法。
package cn.lilyssh.user.provider.service;
import cn.lilyssh.user.api.model.response.UserQueryResp;
import cn.lilyssh.user.api.service.UserServiceApi;
import cn.lilyssh.user.provider.dao.entity.UserEntity;
import cn.lilyssh.user.provider.dao.repository.UserRepository;
import com.alibaba.dubbo.config.annotation.Service;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Component;
import java.util.ArrayList;
import java.util.List;
@Slf4j
@Service
@Component
@AllArgsConstructor
public class UserService implements UserServiceApi {
private UserRepository userRepository;
@Override
public List<UserQueryResp> list(){
QueryWrapper<UserEntity> qw = new QueryWrapper<>();
List<UserEntity> userEntityList = userRepository.list(qw);
List<UserQueryResp> resultList=new ArrayList<>();
userEntityList.forEach(userEntity->{
UserQueryResp userQueryResp=new UserQueryResp();
BeanUtils.copyProperties(userEntity,userQueryResp);
resultList.add(userQueryResp);
});
return resultList;
}
}
4. 测试
(1) 使用telnet模拟调用dubbo服务,端口为user-provider.xml里配置的dubbo端口，默认20880。
telnet localhost 20880
如果连接成功，会看到
Trying ::1...
Connected to localhost.
Escape character is '^]'.
dubbo>
(2) 使用ls查看所有服务。
dubbo>ls
cn.lilyssh.user.api.service.UserServiceApi
(3) 使用cd进入到com.qianxunclub.demo.dubbo.DemoService中,并使用ls查看服务里的方法。
dubbo>cd cn.lilyssh.user.api.service.UserServiceApi
Used the cn.lilyssh.user.api.service.UserServiceApi as default.
You can cancel default service by command: cd /
dubbo>ls
Use default service cn.lilyssh.user.api.service.UserServiceApi.
list
dubbo>
(4) 使用invoke模拟客户端调用服务。
dubbo>invoke list()
会看到：
Use default service cn.lilyssh.user.api.service.UserServiceApi.
[{"age":0,"id":1,"idType":0,"phone":0,"sex":0,"status":0,"userName":"Tom","uuid":"3"},{"age":0,"id":2,"idType":0,"phone":0,"sex":0,"status":0,"userName":"Mike","uuid":"4"}]
elapsed: 83 ms.
大功告成！