對(duì)Mybatis注解方式有興趣的,可以查看我的另一篇:Spring boot Mybatis 整合(注解版) 注解方式更加簡(jiǎn)潔簡(jiǎn)單,極大程度的提高了開發(fā)速度。如果大家需要使用更高的版本比如springboot2.0,請(qǐng)參照我最新的博客springboot2.0 Mybatis 整合 (springboot2.0版本)
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正題
本項(xiàng)目使用的環(huán)境:
- 開發(fā)工具:Intellij IDEA 2017.1.3
- jdk:1.8.0_161
- maven:3.3.9
額外功能
- PageHelper 分頁(yè)插件
- mybatis generator 自動(dòng)生成代碼插件
步驟:
1.創(chuàng)建一個(gè)springboot項(xiàng)目:
2.創(chuàng)建項(xiàng)目的文件結(jié)構(gòu)以及jdk的版本
3.選擇項(xiàng)目所需要的依賴
然后點(diǎn)擊finish
5.看一下文件的結(jié)構(gòu):
6.查看一下pom.xml:
<?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>
<groupId>com.winter</groupId>
<artifactId>springboot-mybatis-demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>springboot-mybatis-demo</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.7</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<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>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.35</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactId>jackson-datatype-joda</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.module</groupId>
<artifactId>jackson-module-parameter-names</artifactId>
</dependency>
<!-- 分頁(yè)插件 -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper-spring-boot-starter</artifactId>
<version>1.1.2</version>
</dependency>
<!-- alibaba的druid數(shù)據(jù)庫(kù)連接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<!-- mybatis generator 自動(dòng)生成代碼插件 -->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<configurationFile>${basedir}/src/main/resources/generator/generatorConfig.xml</configurationFile>
<overwrite>true</overwrite>
<verbose>true</verbose>
</configuration>
</plugin>
</plugins>
</build>
</project>
7.項(xiàng)目不使用application.properties文件 而使用更加簡(jiǎn)潔的application.yml文件:
將原有的resource文件夾下的application.properties文件刪除氢惋,創(chuàng)建一個(gè)新的application.yml配置文件洞翩,
文件的內(nèi)容如下:
server:
port: 8080
spring:
datasource:
name: test
url: jdbc:mysql://127.0.0.1:3306/depot
username: root
password: root
# 使用druid數(shù)據(jù)源
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.jdbc.Driver
filters: stat
maxActive: 20
initialSize: 1
maxWait: 60000
minIdle: 1
timeBetweenEvictionRunsMillis: 60000
minEvictableIdleTimeMillis: 300000
validationQuery: select 'x'
testWhileIdle: true
testOnBorrow: false
testOnReturn: false
poolPreparedStatements: true
maxOpenPreparedStatements: 20
mybatis:
mapper-locations: classpath:mapping/*.xml
type-aliases-package: com.winter.model
#pagehelper分頁(yè)插件
pagehelper:
helperDialect: mysql
reasonable: true
supportMethodsArguments: true
params: count=countSql
8.創(chuàng)建數(shù)據(jù)庫(kù):
CREATE DATABASE mytest;
CREATE TABLE t_user(
user_id INT NOT NULL PRIMARY KEY AUTO_INCREMENT,
user_name VARCHAR(255) NOT NULL ,
password VARCHAR(255) NOT NULL ,
phone VARCHAR(255) NOT NULL
) ENGINE=INNODB AUTO_INCREMENT=1000 DEFAULT CHARSET=utf8;
9.使用mybatis generator 自動(dòng)生成代碼:
- 配置pom.xml中g(shù)enerator 插件所對(duì)應(yīng)的配置文件 ${basedir}/src/main/resources/generator/generatorConfig.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
<!-- 數(shù)據(jù)庫(kù)驅(qū)動(dòng):選擇你的本地硬盤上面的數(shù)據(jù)庫(kù)驅(qū)動(dòng)包-->
<classPathEntry location="E:\developer\mybatis-generator-core-1.3.2\lib\mysql-connector-java-5.1.25-bin.jar"/>
<context id="DB2Tables" targetRuntime="MyBatis3">
<commentGenerator>
<property name="suppressDate" value="true"/>
<!-- 是否去除自動(dòng)生成的注釋 true:是 : false:否 -->
<property name="suppressAllComments" value="true"/>
</commentGenerator>
<!--數(shù)據(jù)庫(kù)鏈接URL,用戶名焰望、密碼 -->
<jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://127.0.0.1/mytest" userId="root" password="root">
</jdbcConnection>
<javaTypeResolver>
<property name="forceBigDecimals" value="false"/>
</javaTypeResolver>
<!-- 生成模型的包名和位置-->
<javaModelGenerator targetPackage="com.winter.model" targetProject="src/main/java">
<property name="enableSubPackages" value="true"/>
<property name="trimStrings" value="true"/>
</javaModelGenerator>
<!-- 生成映射文件的包名和位置-->
<sqlMapGenerator targetPackage="mapping" targetProject="src/main/resources">
<property name="enableSubPackages" value="true"/>
</sqlMapGenerator>
<!-- 生成DAO的包名和位置-->
<javaClientGenerator type="XMLMAPPER" targetPackage="com.winter.mapper" targetProject="src/main/java">
<property name="enableSubPackages" value="true"/>
</javaClientGenerator>
<!-- 要生成的表 tableName是數(shù)據(jù)庫(kù)中的表名或視圖名 domainObjectName是實(shí)體類名-->
<table tableName="t_user" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
</context>
</generatorConfiguration>
- 點(diǎn)擊run-Edit Configurations
- 添加配置
-
運(yùn)行
最后生成的文件以及結(jié)構(gòu):
10. 生成的文件
UserMapper.java
package com.winter.mapper;
import com.winter.model.User;
public interface UserMapper {
int deleteByPrimaryKey(Integer userId);
int insert(User record);
int insertSelective(User record);
User selectByPrimaryKey(Integer userId);
int updateByPrimaryKeySelective(User record);
int updateByPrimaryKey(User record);
//這個(gè)方式我自己加的
List<User> selectAllUser();
}
User.java
package com.winter.model;
public class User {
private Integer userId;
private String userName;
private String password;
private String phone;
public Integer getUserId() {
return userId;
}
public void setUserId(Integer userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName == null ? null : userName.trim();
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password == null ? null : password.trim();
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone == null ? null : phone.trim();
}
}
對(duì)于sql語(yǔ)句這種黃色的背景骚亿,真心是看不下去了(解決方案):
**UserMapper.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.winter.mapper.UserMapper" >
<resultMap id="BaseResultMap" type="com.winter.model.User" >
<id column="user_id" property="userId" jdbcType="INTEGER" />
<result column="user_name" property="userName" jdbcType="VARCHAR" />
<result column="password" property="password" jdbcType="VARCHAR" />
<result column="phone" property="phone" jdbcType="VARCHAR" />
</resultMap>
<sql id="Base_Column_List" >
user_id, user_name, password, phone
</sql>
<select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" >
select
<include refid="Base_Column_List" />
from t_user
where user_id = #{userId,jdbcType=INTEGER}
</select>
<!-- 這個(gè)方法是我自己加的 -->
<select id="selectAllUser" resultMap="BaseResultMap">
select
<include refid="Base_Column_List" />
from t_user
</select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >
delete from t_user
where user_id = #{userId,jdbcType=INTEGER}
</delete>
<insert id="insert" parameterType="com.winter.model.User" >
insert into t_user (user_id, user_name, password,
phone)
values (#{userId,jdbcType=INTEGER}, #{userName,jdbcType=VARCHAR}, #{password,jdbcType=VARCHAR},
#{phone,jdbcType=VARCHAR})
</insert>
<insert id="insertSelective" parameterType="com.winter.model.User" >
insert into t_user
<trim prefix="(" suffix=")" suffixOverrides="," >
<if test="userId != null" >
user_id,
</if>
<if test="userName != null" >
user_name,
</if>
<if test="password != null" >
password,
</if>
<if test="phone != null" >
phone,
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides="," >
<if test="userId != null" >
#{userId,jdbcType=INTEGER},
</if>
<if test="userName != null" >
#{userName,jdbcType=VARCHAR},
</if>
<if test="password != null" >
#{password,jdbcType=VARCHAR},
</if>
<if test="phone != null" >
#{phone,jdbcType=VARCHAR},
</if>
</trim>
</insert>
<update id="updateByPrimaryKeySelective" parameterType="com.winter.model.User" >
update t_user
<set >
<if test="userName != null" >
user_name = #{userName,jdbcType=VARCHAR},
</if>
<if test="password != null" >
password = #{password,jdbcType=VARCHAR},
</if>
<if test="phone != null" >
phone = #{phone,jdbcType=VARCHAR},
</if>
</set>
where user_id = #{userId,jdbcType=INTEGER}
</update>
<update id="updateByPrimaryKey" parameterType="com.winter.model.User" >
update t_user
set user_name = #{userName,jdbcType=VARCHAR},
password = #{password,jdbcType=VARCHAR},
phone = #{phone,jdbcType=VARCHAR}
where user_id = #{userId,jdbcType=INTEGER}
</update>
</mapper>
11.打開類SpringbootMybatisDemoApplication.java,這個(gè)是springboot的啟動(dòng)類熊赖。我們需要添加點(diǎn)東西:
package com.winter;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
@MapperScan("com.winter.mapper")//將項(xiàng)目中對(duì)應(yīng)的mapper類的路徑加進(jìn)來就可以了
public class SpringbootMybatisDemoApplication {
public static void main(String[] args) {
SpringApplication.run(SpringbootMybatisDemoApplication.class, args);
}
}
12.到這里所有的搭建工作都完成了来屠,接下來就是測(cè)試的工作,沒使用junit4進(jìn)行測(cè)試:
首先看一下完成之后的文件的結(jié)構(gòu):
現(xiàn)在controller震鹉,service層的代碼都寫好:
UserController.java
package com.winter.Controller;
import com.winter.model.User;
import com.winter.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
/**
* Created by Administrator on 2017/8/16.
*/
@Controller
@RequestMapping(value = "/user")
public class UserController {
@Autowired
private UserService userService;
@ResponseBody
@RequestMapping(value = "/add", produces = {"application/json;charset=UTF-8"})
public int addUser(User user){
return userService.addUser(user);
}
@ResponseBody
@RequestMapping(value = "/all/{pageNum}/{pageSize}", produces = {"application/json;charset=UTF-8"})
public Object findAllUser(@PathVariable("pageNum") int pageNum, @PathVariable("pageSize") int pageSize){
return userService.findAllUser(pageNum,pageSize);
}
}
UserService.java
package com.winter.service;
import com.winter.model.User;
import java.util.List;
/**
* Created by Administrator on 2017/8/16.
*/
public interface UserService {
int addUser(User user);
List<User> findAllUser(int pageNum, int pageSize);
}
UserServiceImpl.java
package com.winter.service.impl;
import com.github.pagehelper.PageHelper;
import com.winter.mapper.UserMapper;
import com.winter.model.User;
import com.winter.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
/**
* Created by Administrator on 2017/8/16.
*/
@Service(value = "userService")
public class UserServiceImpl implements UserService {
@Autowired
private UserMapper userMapper;//這里會(huì)報(bào)錯(cuò)俱笛,但是并不會(huì)影響
@Override
public int addUser(User user) {
return userMapper.insertSelective(user);
}
/*
* 這個(gè)方法中用到了我們開頭配置依賴的分頁(yè)插件pagehelper
* 很簡(jiǎn)單,只需要在service層傳入?yún)?shù)足陨,然后將參數(shù)傳遞給一個(gè)插件的一個(gè)靜態(tài)方法即可嫂粟;
* pageNum 開始頁(yè)數(shù)
* pageSize 每頁(yè)顯示的數(shù)據(jù)條數(shù)
* */
@Override
public List<User> findAllUser(int pageNum, int pageSize) {
//將參數(shù)傳給這個(gè)方法就可以實(shí)現(xiàn)物理分頁(yè)了,非常簡(jiǎn)單墨缘。
PageHelper.startPage(pageNum, pageSize);
return userMapper.selectAllUser();
}
}
如果強(qiáng)迫癥看不下去那個(gè)報(bào)錯(cuò):(解決方法)
測(cè)試我使用了idea一個(gè)很用心的功能星虹。
可以發(fā)http請(qǐng)求的插件:
點(diǎn)擊左側(cè)的運(yùn)行按鈕就可以發(fā)送請(qǐng)求了;
如果返回值正確 說明你已經(jīng)搭建成功了D魉稀宽涌!
如果大家想使用事務(wù)控制的話,請(qǐng)參照Spring boot Mybatis 整合(注解版) ,這個(gè)里面就有關(guān)于事務(wù)控制的使用