https://blog.csdn.net/y_qc_lookup/article/details/80178545

springboot中配置mybatis连接postgresql

置顶 Dylan's 2018-05-03 15:49:46 41415 收藏 8

分类专栏： java 文章标签： springboot mybatis postgresql xml

版权

最近在使用springboot用于搭建程序后台的框架，与之前ssm,ssh等框架相比，搭建简单，只需下载eclipse或其他插件进行安装即可。

整体结构

1.在pom.xml中加入配置


<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>

<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>

2.resources/application.properties中加入数据库配置链接

### postgresql config ###
spring.datasource.url=jdbc:postgresql://192.168.1.1:5432/postgre
spring.datasource.username=postgre
spring.datasource.password=123456
spring.datasource.driver-class-name=org.postgresql.Driver

3.编写model模型

package com.main.model;
import java.io.Serializable;
public class UserEntity implements Serializable {
private static final long serialVersionUID = 1L;
private Long id;
private String userName;
private String passWord;
private String userSex;
private String nickName;
public UserEntity() {
super();
}
public UserEntity(String userName, String passWord, String userSex,String nickName) {
super();
this.passWord = passWord;
this.userName = userName;
this.userSex = userSex;
this.nickName = nickName;
}
public Long getId() {
return id;
}
public void setId(Long 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 getUserSex() {
return userSex;
}
public void setUserSex(String userSex) {
this.userSex = userSex;
}
public String getNickName() {
return nickName;
}
public void setNickName(String nickName) {
this.nickName = nickName;
}
public static long getSerialversionuid() {
return serialVersionUID;
}
@Override
public String toString() {
// TODO Auto-generated method stub
return "userName " + this.userName + ", pasword " + this.passWord + ", nickName " + this.nickName+ ", userSex " + this.userSex;
}
}

4.编写spring mapper。

public interface UserMapper {
List<UserEntity> getAll();
UserEntity getOne(Long id);
void insert(UserEntity user);
void update(UserEntity user);
void delete(Long id);
}

5.mybatis中的xml配置文件

<?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.main.mapper.UserMapper" >
<resultMap id="BaseResultMap" type="com.main.model.UserEntity" >
<id column="id" property="id" jdbcType="BIGINT" />
<result column="userName" property="userName" jdbcType="VARCHAR" />
<result column="passWord" property="passWord" jdbcType="VARCHAR" />
<result column="user_sex" property="userSex" jdbcType="VARCHAR"/>
<result column="nick_name" property="nickName" jdbcType="VARCHAR" />
</resultMap>
<sql id="Base_Column_List" >
id, userName, passWord, user_sex, nick_name
</sql>
<select id="getAll" resultMap="BaseResultMap" >
SELECT
<include refid="Base_Column_List" />
FROM test.userentity
</select>
<select id="getOne" parameterType="java.lang.Long" resultMap="BaseResultMap" >
SELECT
<include refid="Base_Column_List" />
FROM test.userentity
WHERE id = #{id}
</select>
<insert id="insert" parameterType="com.main.model.UserEntity" >
INSERT INTO
test.userentity
(userName,passWord,user_sex)
VALUES
(#{userName}, #{passWord}, #{userSex})
</insert>
<update id="update" parameterType="com.main.model.UserEntity" >
UPDATE
test.userentity
SET
<if test="userName != null">userName = #{userName},</if>
<if test="passWord != null">passWord = #{passWord},</if>
nick_name = #{nickName}
WHERE
id = #{id}
</update>
<delete id="delete" parameterType="java.lang.Long" >
DELETE FROM
test.userentity
WHERE
id =#{id}
</delete>
</mapper>

这里的配置将com.main.mapper.UserMapper中的抽象方法进行实现。

6.配置mybatis.config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<typeAliases>
<typeAlias alias="Integer" type="java.lang.Integer" />
<typeAlias alias="Long" type="java.lang.Long" />
<typeAlias alias="HashMap" type="java.util.HashMap" />
<typeAlias alias="LinkedHashMap" type="java.util.LinkedHashMap" />
<typeAlias alias="ArrayList" type="java.util.ArrayList" />
<typeAlias alias="LinkedList" type="java.util.LinkedList" />
</typeAliases>
</configuration>