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springboot 多数据源 实例(sybase、mysql数据库)(下)

时间:2023-02-12 21:33:17浏览次数:57  
标签:jdbc springboot 数据源 sybase mysql import com

接下来见证奇迹的时刻:

首先要借鉴这位大神的总结的代码:

说明:

springboot2.3.x + mybatisplus + druid + sybase + mysql 多数据源整合

1、项目依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-parent</artifactId>
   <version>2.3.3.RELEASE</version>
   <relativePath/> <!-- lookup parent from repository -->
</parent>
 
<artifactId>dbs-yandype</artifactId>
 
<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
        <exclusions>
            <exclusion>
                <groupId>org.junit.vintage</groupId>
                <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>com.baomidou</groupId>
        <artifactId>mybatis-plus-boot-starter</artifactId>
        <version>3.4.0</version>
    </dependency>
    <dependency>
      <groupId>com.baomidou</groupId>
      <artifactId>dynamic-datasource-spring-boot-starter</artifactId>
      <version>3.2.0</version>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
        <version>8.0.21</version>
    </dependency>
    <!-- 数据库JDBC3.0连接驱动 -->
    <dependency>
        <groupId>net.sourceforge.jtds</groupId>
        <artifactId>jtds</artifactId>
        <version>1.3.1</version>
    </dependency>
    <!-- 阿里 druid数据源 -->
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid</artifactId>
        <version>1.1.0</version>
    </dependency>
</dependencies>
 
</project>
View Code

2、配置文件 application.yml

spring:
  datasource:
    dynamic:
      primary: mysql-db #设置默认的数据源或者数据源组
      datasource:
        sybase-db:
          type: com.alibaba.druid.pool.DruidDataSource
          driver-class-name: net.sourceforge.jtds.jdbc.Driver
          url: jdbc:jtds:sybase://127.0.0.1:6000/TEST;charset=cp936
          username: sy
          password:
        mysql-db:
          type: com.alibaba.druid.pool.DruidDataSource
          driver-class-name: com.mysql.cj.jdbc.Driver
          url: jdbc:mysql://127.0.0.1:3306/test_ac?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai
          username: root
          password: root
  druid:
    # 连接池的配置信息
    # 初始化大小,最小,最大
    initial-size: 5
    min-idle: 5
    maxActive: 20
    # 配置获取连接等待超时的时间
    maxWait: 60000
    # 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒
    timeBetweenEvictionRunsMillis: 60000
    # 配置一个连接在池中最小生存的时间,单位是毫秒
    minEvictableIdleTimeMillis: 300000
    validationQuery: SELECT 1 FROM DUAL
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
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3、mybatisplus配置类

package com.yandype.config;
 
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Configuration;
 
@Configuration
@MapperScan("com.yandype.mapper")
public class MybatisPlusConfig {
}
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4、com.yandype.mapper 包下mapper接口

4.1、sybase 数据源 mapper 定义

package com.yandype.mapper;
 
 
import com.baomidou.dynamic.datasource.annotation.DS;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 
@DS("sybase-db")
public interface SybaseTestUserMapper extends BaseMapper<SybaseTestUser> {
}
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4.2、SybaseTestUser entity实体类

package com.yandype.entity;
 
import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;
 
@Data
@TableName("TB_TEST_USER")
public class SybaseTestUser {
    @TableId("ID")
    private String id;
    @TableField("USERNAME")
    private String username;
    @TableField("PASSWORD")
    private String password;
    @TableField("NAME")
    private String name;
    @TableField("BZ")
    private String bz;
}
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4.3、mysql 数据源 mapper 定义

package com.yandype.mapper;
 
import com.baomidou.dynamic.datasource.annotation.DS;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
// @DS 切换数据源 @DS 可以注解在方法上和类上,同时存在方法注解优先于类上注解。
@DS("mysql-db")
public interface MysqlTestUserAcMapper extends BaseMapper<MysqlTestUser> {
}
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4.4、MysqlTestUser entity实体类

package com.yandype.entity;
import lombok.Data;
 
@Data
public class MysqlTestUser {
    private Long id;
    private String userName;
    private String userPhone;
}
View Code

单元测试

package com.yandype.mapper;
 
import org.springframework.boot.test.context.SpringBootTest;
import static org.junit.jupiter.api.Assertions.*;
 
@SpringBootTest
public class TestUserAcMapperTest{
 
    @Autowired
    private SybaseTestUserMapper sybaseTestUserMapper;
     @Autowired
    private MysqlTestUserMapper mysqlTestUserMapper;
    
    // sybase 数据源测试
    @Test
    public void sybaseSelectTest(){
        List<SybaseTestUser> userList = sybaseTestUserMapper.selectList(null);
        System.out.println(userList);
    }
    
    // mysql 数据源测试
    @Test
    public void mysqlSelectTest(){
        List<MysqlTestUser> userList = mysqlTestUserMapper.selectList(null);
        System.out.println(userList);
    }

}
View Code

 

完整项目代码已提交到码云仓库:

https://gitee.com/yandype/springboot-mybats-plus-dbs

 

参考资料:

mybatis-plus官网文档多数据源配置:

https://baomidou.com/guide/dynamic-datasource.html
注意事项 :

 数据库JDBC3.0连接驱动(net.sourceforge.jtds)

适合sybase 11 -15 版本的数据库

服务启动没问题 第一次查询查询数据为空。再次请求接口 数据时报错如下:

### Error querying database.  Cause: java.sql.SQLException: SQL Anywhere Error -110: Item 'jtds000001' already exists
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最终经过八十一难 才找到 :

 

 

 那这怎么解决呢........................?

找度娘 度爹 甚至 不惜重金 用上了chatgpt ,我也记不得问多少次了。最终找到了解决办法!

修改配置文件如下:

首先下载 jconn4.jar ,地址:

链接:https://pan.baidu.com/s/1q9GdZZqVc6Lxtp2DY_OkEQ?pwd=5211
提取码:5211
View Code

在pom 引入本地 jar 

 <dependency>
            <groupId>com.sybase</groupId>
            <artifactId>jconn4</artifactId>
            <version>4.0.0</version>
            <scope>system</scope>
            <systemPath>${project.basedir}/lib/jconn-4.0.0.jar</systemPath>
        </dependency>
View Code

如图:

修改配置文件如下:

spring:
  datasource:
    dynamic:
      primary: mysql-adb #设置默认的数据源或者数据源组
      datasource:
        sybase-db:
        #  type: com.alibaba.druid.pool.DruidDataSource
        #  driver-class-name: net.sourceforge.jtds.jdbc.Driver
        #  url: jdbc:jtds:sybase://192.168.70.71:2638/disa_cim_160021
          type: com.zaxxer.hikari.HikariDataSource
          driver-class-name: com.sybase.jdbc4.jdbc.SybDriver
          url: jdbc:sybase:Tds:127.0.0.1:5000/sss;charset=cp936
          username: dba
          password: sql
        mysql-adb:
          type: com.alibaba.druid.pool.DruidDataSource
          driver-class-name: com.mysql.cj.jdbc.Driver
          url: jdbc:mysql://127.0.0.1:3307/aaa?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai
          username: root
          password: 123
        mysql-bdb:
          type: com.alibaba.druid.pool.DruidDataSource
          driver-class-name: com.mysql.cj.jdbc.Driver
          url: jdbc:mysql://127.0.0.1:3307/aaa?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai
          username: root
          password: 123
  druid:
    # 连接池的配置信息
    # 初始化大小,最小,最大
    initial-size: 5
    min-idle: 5
    maxActive: 20
    # 配置获取连接等待超时的时间
    maxWait: 60000
    # 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒
    timeBetweenEvictionRunsMillis: 60000
    # 配置一个连接在池中最小生存的时间,单位是毫秒
    minEvictableIdleTimeMillis: 300000
    validationQuery: SELECT 1 FROM DUAL
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
View Code

到此终于大功告成!有什么问题欢迎留言,希望能帮到你!奋青们

截图如下:

 

标签:jdbc,springboot,数据源,sybase,mysql,import,com
From: https://www.cnblogs.com/zxy-come-on/p/17114765.html

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