springboot整合mybatis连接oracle

/**
 * Copyright (c) 2020, All Rights Reserved.
 *
*/

package com.demo.server.mybatis;

import java.io.Serializable;

/**
 * 此处应有类说明<br/>
 *
 * @author chong.zuo
 * @Date 2020年2月22日 下午7:40:28
 * @since 1.0.0
 *  
 */
public class User implements Serializable{
    /**
     * serialVersionUID: 
     */
    private static final long serialVersionUID = 1L;
    private int id;
    private String username;
    private String password;
    private String danWeiTID;

    @Override
    public String toString() {
        return "User [danWeiTID=" + danWeiTID + ", id=" + id + ", password="
                + password + ", username=" + username + "]";
    }
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public String getDanWeiTID() {
        return danWeiTID;
    }
    public void setDanWeiTID(String danWeiTID) {
        this.danWeiTID = danWeiTID;
    }
    
}

/**
 * Copyright (c) 2020, All Rights Reserved.
 *
*/

package com.demo.server.mybatis;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.demo.server.utils.JsonUtil;

/**
 * 此处应有类说明<br/>
 *
 * @author chong.zuo
 * @Date 2020年2月22日 下午7:38:32
 * @since 1.0.0
 *  
 */
@RestController
public class UserController {

    @Autowired
    private UserMapper userMapper;

    @RequestMapping("/getAllUser")
    public String getUsers() {
        User users = userMapper.findAllUser();
        if(users != null) {
            return JsonUtil.toJson(users);
        }
        return "err";
    }
}

/**
 * Copyright (c) 2020, All Rights Reserved.
 *
*/

package com.demo.server.mybatis;

import org.apache.ibatis.annotations.Mapper;
/**
 * 此处应有类说明<br/>
 *
 * @author chong.zuo
 * @Date 2020年2月22日 下午7:40:01
 * @since 1.0.0
 *  
 */
@Mapper //添加此注解，便可以被扫描到
public interface UserMapper {
    /**
     * 返回所有用户列表
     * @return
     */
    public User findAllUser();
}

<?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.demo.server.mybatis.UserMapper">

    <resultMap id="resultMap" type="com.demo.server.mybatis.User">
        <result column="id" jdbcType="VARCHAR" property="id"/>
        <result column="user_name" jdbcType="VARCHAR" property="username"/>
        <result column="pass_word" jdbcType="VARCHAR" property="password"/>
        <result column="danweit_id" jdbcType="VARCHAR" property="danWeiTID"/>
    </resultMap>


    <select id="findAllUser" resultMap="resultMap">
        select * from sys_user
    </select>
    
</mapper>

server:
  port: 7070
  session-timeout: 0
  context-path: /

spring:
  datasource: 
    url: jdbc:oracle:thin:@192.168.5.105:1521:orcl
    username: tom
    password: tom123
    driver-class-name: oracle.jdbc.driver.OracleDriver
    max-idle: 10
    max-wait: 10000
    min-idle: 5
    initial-size: 5
    
mybatis:
  mapper-locations: classpath:mapper/*Mapper.xml
  type-aliases-package: com.demo.server.mybatis    

-- Create table
create table SYS_USER
(
  id         VARCHAR2(20) not null,
  user_name  VARCHAR2(20) not null,
  pass_word  VARCHAR2(20) not null,
  danweit_id VARCHAR2(20)
)
tablespace TOMSPACE
  pctfree 10
  initrans 1
  maxtrans 255
  storage
  (
    initial 64K
    next 1M
    minextents 1
    maxextents unlimited
  );
-- Add comments to the table 
comment on table SYS_USER
  is ‘用户表‘;

/**
 * Copyright (c) 2020, All Rights Reserved.
 *
 */

package com.demo;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.Banner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * 
 * 此处应有类说明<br/>
 *
 * @author chong.zuo
 * @Date 2020年2月20日 下午10:07:09
 * @since 1.0.0
 *
 */
@SpringBootApplication
public class Application {
    private static final Logger LOG = LoggerFactory.getLogger(Application.class);

    public static void main(String[] args) {
        SpringApplication app = new SpringApplication(Application.class);
        app.setBannerMode(Banner.Mode.OFF);
        app.setWebEnvironment(true);
        app.run(args);
        LOG.info("**************** Startup Success ****************");
    }

}