springboot+mybatis+达梦数据库

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>