公衆號:java樂園java
一、上一篇學習了服務提供者provider,可是並非單單就學習了服務提供者。中間還穿插使用了Hikari數據源和spring cloud整合mybatis。可是上篇使用mybatis時仍是沿用了老的方式,須要配置mapper對應的xml文件。先來看看上篇使用mybatis的主要步驟
1、 pom.xml文件引用spring
<dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.2</version> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.2</version> </dependency>
2、 application.yml配置文件加入mybtias配置項apache
mybatis: mapperLocations: classpath:sc/provider/dao/*.xml #configLocation: classpath:mybatis-config.xml
3、 編寫mapper文件user-mapper.xmlrestful
<?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="sc.provider.dao.UserDao" > <select id="getUser" parameterType="java.lang.Long" resultType="sc.provider.model.User"> select id, userName, age, position from t_user where id = #{id,jdbcType=INTEGER} </select> <select id="listUser" resultType="sc.provider.model.User"> select id, userName, age, position from t_user </select> <insert id="addUser" parameterType="sc.provider.model.User"> insert into t_user ( id, userName, age, position ) values ( #{id,jdbcType=INTEGER}, #{userName,jdbcType=VARCHAR}, #{age,jdbcType=INTEGER}, #{position,jdbcType=VARCHAR} ) </insert> <update id="updateUser" parameterType="sc.provider.model.User"> update t_user set userName = #{userName,jdbcType=VARCHAR}, age = #{age,jdbcType=INTEGER}, position = #{position,jdbcType=VARCHAR} where id = #{id,jdbcType=INTEGER} </update> <delete id="deleteUser" parameterType="java.lang.Long"> delete from t_user where id = #{id,jdbcType=INTEGER} </delete> </mapper>
4、 編寫UserDao.javamybatis
package sc.provider.dao; import java.util.List; import sc.provider.model.User; public interface UserDao { User getUser(Long id); List<User> listUser(); int addUser(User user); int updateUser(User user); int deleteUser(Long id); }
5、 在ProviderApplication.java添加app
@MapperScan(basePackages="sc.provider.dao")
通過上面五個步驟才能使用mybatis。本篇將和你們看看不能簡化spring cloud 整合mybatis的步驟(在sc-eureka-client-provider工程上改造)
1、 依賴必不可少ide
<dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.2</version> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.2</version> </dependency>
2、 刪除application.yml關於mybatis的配置
3、 刪除mapper文件user-mapper.xml文件
4、 改造UserDao.java類spring-boot
package sc.provider.dao; import java.util.List; import org.apache.ibatis.annotations.Delete; import org.apache.ibatis.annotations.Insert; import org.apache.ibatis.annotations.Mapper; import org.apache.ibatis.annotations.Select; import org.apache.ibatis.annotations.Update; import sc.provider.model.User; @Mapper public interface UserDao { @Select(value="select id, userName, age, position from t_user where id = #{id,jdbcType=INTEGER}") User getUser(Long id); @Select(value="select id, userName, age, position from t_user") List<User> listUser(); @Insert(value="insert into t_user (id, userName, age, position) values ( #{id,jdbcType=INTEGER},#{userName,jdbcType=VARCHAR},#{age,jdbcType=INTEGER},#{position,jdbcType=VARCHAR})") int addUser(User user); @Update(value="update t_user set userName = #{userName,jdbcType=VARCHAR},age = #{age,jdbcType=INTEGER},position = #{position,jdbcType=VARCHAR} where id = #{id,jdbcType=INTEGER}") int updateUser(User user); @Delete(value=" delete from t_user where id = #{id,jdbcType=INTEGER}") int deleteUser(Long id); }
5、 @MapperScan註解必不可少post
package sc.provider; import org.mybatis.spring.annotation.MapperScan; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.netflix.eureka.EnableEurekaClient; @SpringBootApplication @EnableEurekaClient @MapperScan(basePackages="sc.provider.dao") public class ProviderApplication { public static void main(String[] args) { SpringApplication.run(ProviderApplication.class, args); } }
通過以上步驟就把使用xml方式的mybatis改形成使用annotation方式的mybatis了。學習
二、啓動註冊中心sc-eureka-server,啓動sc-eureka-client-provider-annotation(使用sc-eureka-client-provider項目改造),驗證是否改形成功
方式一:
方式二:
圈住的名字是在application.yml配置的
三、使用postman方法相應restful接口,這裏就不一一訪問了,能夠參考上一篇文章的訪問方式
添加:
http://127.0.0.1:8300/user/addUser
查詢:
http://127.0.0.1:8300/user/getUser/4
列表:
http://127.0.0.1:8300/user/listUser
更新:
http://127.0.0.1:8300/user/updateUser
刪除:
http://127.0.0.1:8300/user/deleteUser/2