springboot+mybatis+达梦数据库

2022-08-16 10:25:17

准备工作：

首先，安装达梦6数据库。安装完之后如下建表

然后，很重要的一点(写法一定要这样写，否则无限报错)

达梦数据库查表方式:

select * from "库名"."模式名"."表名"

其次，下载达梦数据库驱动包(这个通过maven在线下载是下载不到的！)

网上的包很多，有dm6，dm7 ...。。。。。。

都试过，和springboot不兼容。用上面这个名字的最新的包。

再然后，把驱动包打入本地maven仓库，命令如下：

mvn install:install-file -DgroupId=com.dm -DartifactId=DmJdbcDriver -Dversion=1.7.0 -Dpackaging=jar -Dfile=D:\DmJdbcDriver.jar

搭建项目：

新建springboot 1.5.21，只选择web

架构如下图：

pom文件：

<?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">

    <modelVersion>4.0.0</modelVersion>

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>1.5.21.RELEASE</version>

        <relativePath/> <!-- lookup parent from repository -->

    </parent>

    <groupId>com.qif.xdqdm</groupId>

    <artifactId>xdqdm</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <packaging>war</packaging>

    <name>xdqdm</name>

    <description>Demo project for Spring Boot</description>

    <properties>

        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

        <java.version>1.8</java.version>

    </properties>

    <dependencies>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-thymeleaf</artifactId>

        </dependency>

        <!--添加servlet的依赖-->

        <dependency>

            <groupId>javax.servlet</groupId>

            <artifactId>javax.servlet-api</artifactId>

            <version>3.1.0</version>

            <scope>provided</scope>

        </dependency>

        <dependency>

            <groupId>org.mybatis.spring.boot</groupId>

            <artifactId>mybatis-spring-boot-starter</artifactId>

            <version>1.3.2</version>

        </dependency>

        <!--必须指定mybatis版本为3.4.1否则无法连接达梦数据库 -->

        <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->

        <dependency>

            <groupId>org.mybatis</groupId>

            <artifactId>mybatis</artifactId>

            <version>3.4.1</version>

        </dependency>

        <dependency>

             <groupId>com.dm</groupId>

             <artifactId>DmJdbcDriver</artifactId>

        <version>1.7.0</version>

         </dependency>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-test</artifactId>

            <scope>test</scope>

        </dependency>

        <dependency>

            <groupId>com.alibaba</groupId>

            <artifactId>fastjson</artifactId>

            <version>1.2.32</version>

        </dependency>

        <!-- 热部署 -->

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-devtools</artifactId>

            <optional>true</optional>

        </dependency>

    </dependencies>

    <build>

        <plugins>

            <plugin>

                <artifactId>maven-war-plugin</artifactId>

                <version>3.0.0</version>

            </plugin>

        </plugins>

    </build>

</project>

Myconfig(设置初始页面为index)：

package com.qif.xdqdm.config;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;

import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

@Configuration

public class MyConfig extends WebMvcConfigurerAdapter {

    //所有的WebMvcConfigurerAdapter组件都会一起起作用

    @Bean //将组件注册在容器

    public WebMvcConfigurerAdapter webMvcConfigurerAdapter() {

        WebMvcConfigurerAdapter adapter = new WebMvcConfigurerAdapter() {

            @Override

            public void addViewControllers(ViewControllerRegistry registry) {

                registry.addViewController("/").setViewName("index");

            }

        };

        return adapter;

    }

}

TxtUtil不用管，自己用的工具

UserController：

package com.qif.xdqdm.controller;

import com.qif.xdqdm.model.User;

import com.qif.xdqdm.service.UserService;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

/**

 * @author

 * @Title: UserController

 * @ProjectName xdqdm

 * @Description: TODO

 * @date 2019/7/24  11:13

 */

@Controller

public class UserController {

    @Autowired

    UserService userService;

    @RequestMapping("/getUserList")

    @ResponseBody

    public Map<String, Object> getUserList(HttpServletRequest request){

        Map<String, Object> map = new HashMap<String, Object>();

        List<User> userList =  userService.getUser();

        map.put("data", userList);

        map.put("message", "成功");

        return map;

    }

}

UserDao：

package com.qif.xdqdm.dao;

import com.qif.xdqdm.model.User;

import org.springframework.stereotype.Repository;

import java.util.List;

/**

 * @author

 * @Title: UserDao

 * @ProjectName xdqdm

 * @Description: TODO

 * @date 2019/7/24  11:17

 */

@Repository

public interface UserDao {

    List<User> getUserList();

}

User：

package com.qif.xdqdm.model;

/**

 * @author

 * @Title: User

 * @ProjectName sfyz

 * @Description: TODO

 * @date 2019/7/24  10:51

 */

public class User {

    private Integer id;

    private String name;

    public Integer getId() {

        return id;

    }

    public void setId(Integer id) {

        this.id = id;

    }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

}

UserService：

package com.qif.xdqdm.service;

import com.qif.xdqdm.model.User;

import java.util.List;

/**

 * @author

 * @Title: UserService

 * @ProjectName xdqdm

 * @Description: TODO

 * @date 2019/7/24  11:15

 */

public interface UserService {

    List<User> getUser();

}

UserServiceImpl：

package com.qif.xdqdm.service.impl;

import com.qif.xdqdm.dao.UserDao;

import com.qif.xdqdm.model.User;

import com.qif.xdqdm.service.UserService;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

import java.util.List;

/**

 * @author

 * @Title: UserServiceImpl

 * @ProjectName xdqdm

 * @Description: TODO

 * @date 2019/7/24  11:15

 */

@Service

public class UserServiceImpl implements UserService {

    @Autowired

    UserDao userDao;

    @Override

    public List<User> getUser() {

        return userDao.getUserList();

    }

}

XdqdmApplication：

这里不能用springboot自带tomcat8启动类启动，与达梦6驱动包不兼容！

package com.qif.xdqdm;

import org.mybatis.spring.annotation.MapperScan;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.boot.builder.SpringApplicationBuilder;

import org.springframework.boot.web.support.SpringBootServletInitializer;

//扫描dao包

@MapperScan(value = "com.qif.xdqdm.dao")

@SpringBootApplication

public class XdqdmApplication extends SpringBootServletInitializer {

    public static void main(String[] args) {

        SpringApplication.run(XdqdmApplication.class, args);

    }

    @Override

    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {

        return builder.sources(this.getClass());

    }

}

选择tomcat7：

UserDao.xml：

<?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.qif.xdqdm.dao.UserDao">

    <select id="getUserList" resultType="com.qif.xdqdm.model.User">

        SELECT * FROM "TEST"."SYSDBA"."USER" ;

    </select>

</mapper>

index： "helloworld"

application.properties：

#驱动包

spring.datasource.driver-class-name=dm.jdbc.driver.DmDriver

#12345为达梦6默认端口号 Test为库名

spring.datasource.url=jdbc:dm://localhost:12345/TEST

#达梦数据库6默认的账户和密码

spring.datasource.username=SYSDBA

spring.datasource.password=SYSDBA

application.yml：

mybatis:

  # 指定sql映射文件位置

  mapper-locations: classpath:mybatis/mapper/*.xml

logback（乱码则修改GBK为UTF-8）：

<?xml version="1.0" encoding="GBK"?>

<configuration  scan="true" scanPeriod="60 seconds" debug="false">

    <contextName>logback</contextName>

    <springProperty scope="context" name="logLevel" source="logging.levels"/>

    <springProperty scope="context" name="logPath" source="logging.path"/>

    <!--输出到控制台-->

    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">

        <!-- <filter class="ch.qos.logback.classic.filter.ThresholdFilter">

             <level>ERROR</level>

         </filter>-->

        <encoder>

            <pattern>%d{HH:mm:ss.SSS} =================%contextName [%thread] %-5level %logger{36} - %msg%n</pattern>

            <charset>GBK</charset>

        </encoder>

    </appender>

    <!--输出到文件-->

    <appender name="file" class="ch.qos.logback.core.rolling.RollingFileAppender">

        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">

            <fileNamePattern>${logPath}logback.%d{yyyy-MM-dd}.log</fileNamePattern>

        </rollingPolicy>

        <encoder>

            <pattern>%d{HH:mm:ss.SSS} %contextName [%thread] %-5level %logger{36} - %msg%n</pattern>

            <charset>UTF-8</charset>

        </encoder>

    </appender>

    <root level="info">

        <appender-ref ref="console" />

        <appender-ref ref="file" />

    </root>

</configuration>

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