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在Spring Boot 2中集成MyBatis和Apache Camel路由是一个相对复杂的过程,但通过以下步骤,你可以成功实现这一集成。
首先,在你的pom.xml
文件中添加必要的依赖项。
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.1.4</version>
</dependency>
<dependency>
<groupId>org.apache.camel.springboot</groupId>
<artifactId>camel-spring-boot-starter</artifactId>
<version>3.14.0</version>
</dependency>
创建一个MyBatis配置类来配置数据源和Mapper接口。
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import javax.sql.DataSource;
@Configuration
@MapperScan("com.example.demo.mapper")
public class MyBatisConfig {
@Bean
public SqlSessionFactory sqlSessionFactory(DataSource dataSource) throws Exception {
SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
sessionFactory.setDataSource(dataSource);
sessionFactory.setTypeAliasesPackage("com.example.demo.entity");
sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mapper/*.xml"));
return sessionFactory.getObject();
}
}
创建一个Camel配置类来定义路由和组件。
import org.apache.camel.builder.RouteBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class CamelConfig {
@Bean
public RouteBuilder routeBuilder() {
return new RouteBuilder() {
@Override
public void configure() throws Exception {
from("direct:start")
.to("mybatis:selectUserById?mapper=com.example.demo.mapper.UserMapper");
}
};
}
}
创建一个Mapper接口和对应的XML文件来定义SQL查询。
package com.example.demo.mapper;
import com.example.demo.entity.User;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;
import java.util.List;
@Mapper
public interface UserMapper {
@Select("SELECT * FROM users WHERE id = #{id}")
User selectUserById(Long id);
}
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.example.demo.mapper.UserMapper">
<select id="selectUserById" resultType="com.example.demo.entity.User">
SELECT * FROM users WHERE id = #{id}
</select>
</mapper>
创建一个简单的Spring Boot应用程序来测试MyBatis和Apache Camel的集成。
package com.example.demo;
import org.apache.camel.CamelContext;
import org.apache.camel.ProducerTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class DemoApplication implements CommandLineRunner {
@Autowired
private ProducerTemplate producerTemplate;
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
@Override
public void run(String... args) throws Exception {
User user = new User();
user.setId(1L);
producerTemplate.sendBody("direct:start", user);
}
}
启动你的Spring Boot应用程序,然后通过Camel路由发送一个请求到direct:start
端点。你应该能够看到MyBatis从数据库中查询数据并返回结果。
通过以上步骤,你已经成功地在Spring Boot 2中集成了MyBatis和Apache Camel路由。
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