SpringBoot整合Mybatis 以及 mybatis自動生成程式碼配置
阿新 • • 發佈：2019-01-09
1、springboot的配置檔案application.yml
#埠 server: port: 8080 #模板頁面 #註釋的部分是Thymeleaf預設的配置，如有其它需求可以自行更改 spring: thymeleaf: cache: false prefix: classpath:/templates/ suffix: .html mode: LEGACYHTML5 # encoding: UTF-8 # content-type: text/html ##資料來源一 #spring: # datasource: # driverClass: com.mysql.jdbc.Driver # url: jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf-8 # username: xuan # password: 123456 #資料來源二 spring: datasource: url: jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf-8 username: xuan password: 123456 # 使用druid資料來源 type: com.alibaba.druid.pool.DruidDataSource driver-class-name: com.mysql.cj.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 #spring-boot整合mybatis mybatis: #config-location: classpath:/mapper/config/mybatisConfig.xml #可以注射掉,沒用到該配置檔案 mapper-locations: classpath:/mapper/*Mapper.xml #type-aliases-package: com.xuan.entity
2、maven的配置檔案pom.xml (加入springboot整合mybatis的jar包，以及mysql驅動jar包，阿里的資料庫連結池jar包)
以及mybatis 自動生成程式碼的一些配置
<?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.xuan</groupId> <artifactId>myspringboot</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>myspringboot</name> <description>Demo project for Spring Boot</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.8.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>1.8</java.version> <mybatis.generator.version>1.3.2</mybatis.generator.version> <mysql.connector.java.version>6.0.6</mysql.connector.java.version> <!-- Used by MyBatis Generator to Generate Codes --> <!-- 執行命令: mvn mybatis-generator:generate -e --> <!--<classPathEntry.mysql.location>${basedir}/target/${project.artifactId}/WEB-INF/lib/mysql-connector-java-${mysql.connector.java.version}.jar</classPathEntry.mysql.location>--> <classPathEntry.mysql.location>/Users/chenqixuan/.m2/repository/mysql/mysql-connector-java/5.1.38/mysql-connector-java-5.1.38.jar</classPathEntry.mysql.location> <javaModelGenerator.targetProject>${basedir}/src/main/java</javaModelGenerator.targetProject> <sqlMapGenerator.targetProject>${basedir}/src/main/resources</sqlMapGenerator.targetProject> <javaClientGenerator.targetProject>${basedir}/src/main/java</javaClientGenerator.targetProject> <mybatis.generator.configurationFile>${basedir}/src/main/resources/generator/generatorConfig.xml</mybatis.generator.configurationFile> <mybatis.generator.overwrite>true</mybatis.generator.overwrite> </properties> <dependencies> <!--springboot整合redis--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId> </dependency> <!--springboot整合mybatis--> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.1</version> </dependency> <!--mysql jdbc驅動 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.connector.java.version}</version> </dependency> <!-- alibaba的druid資料庫連線池 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.11</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!--模板頁面--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> <dependency> <groupId>net.sourceforge.nekohtml</groupId> <artifactId>nekohtml</artifactId> <version>1.9.22</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> <!-- mybatis generator 自動生成程式碼外掛 --> <plugin> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-maven-plugin</artifactId> <version>${mybatis.generator.version}</version> </plugin> </plugins> </build> </project>
3、mybatis的配置檔案 （可以不要需要，因為在application.yml配置了）
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <settings> <!-- changes from the defaults --> <setting name="lazyLoadingEnabled" value="false" /> </settings> <mappers> <!--在application.yml配置檔案中已經配置的*Mapper.xml,所以這裡不需要重複添加了--> <!--<mapper resource="mapper/UserMapper.xml" />--> </mappers> </configuration>
4、使用者實體類xml對映檔案 UserMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.xuan.mapper.UserMapper">
<!-- 查詢網校的使用者數目 -->
<select id="getAllUser" resultType="com.xuan.entity.User">
SELECT * from user
</select>
</mapper>5、自動生成配置檔案 generatorConfig.xml（專案目錄下執行命令： mvn mybatis-generator:generate -e ）
注意：generatorConfig.xml配置檔案中有些引數筆者是配置在pom.xml裡的，另外mysql-connector-java-5.1.38.jar 資料庫mysql驅動也不要使用太高的版本（筆者使用6.0.6版本是遇到錯誤，換成低版本就沒事）
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
<classPathEntry location="${classPathEntry.mysql.location}" />
<context id="mysqlTables" targetRuntime="MyBatis3">
<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql://127.0.0.1:3306/test?characterEncoding=utf8"
userId="xuan" password="123456">
</jdbcConnection>
<javaTypeResolver>
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>
<javaModelGenerator targetPackage="com.xuan.entity"
targetProject="${javaModelGenerator.targetProject}">
<property name="enableSubPackages" value="true" />
<property name="trimStrings" value="true" />
</javaModelGenerator>
<sqlMapGenerator targetPackage="mapper"
targetProject="${sqlMapGenerator.targetProject}">
<property name="enableSubPackages" value="true" />
</sqlMapGenerator>
<javaClientGenerator type="XMLMAPPER"
targetPackage="com.xuan.mapper" targetProject="${javaClientGenerator.targetProject}">
<property name="enableSubPackages" value="false" />
</javaClientGenerator>
<!--
<table tableName="live_course_channel" domainObjectName="LiveCourseChannel"></table>
-->
<table tableName="video" domainObjectName="Video"></table>
</context>
</generatorConfiguration>6、使用者實體類：
package com.xuan.entity;
import java.io.Serializable;
/**
* Created by chenqixuan on 17/10/24.
*/
public class User implements Serializable{
private static final long serialVersionUID = 2120869894112984147L;
private Integer id;
private String name;
private Integer age;
private String address;
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;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
}
7、dao層是使用@Mapper註解介面代理，以前spring是使用自動掃描
package com.xuan.mapper;
import com.xuan.entity.User;
import org.apache.ibatis.annotations.Mapper;
import java.util.List;
/**
* Created by chenqixuan on 17/10/24.
*/
@Mapper
public interface UserMapper {
public List<User> getAllUser();
}
8、controller引用：
package com.xuan.controller;
import com.xuan.entity.User;
import com.xuan.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.*;
/**
* Created by chenqixuan on 17/10/24.
*/
@RestController
@RequestMapping("/user")
public class UserController {
@Autowired
private UserMapper userMapper;
@GetMapping(value="/all")
public List<User> getAllUser(){
return userMapper.getAllUser();
}
}
9、效果圖：
10、目錄結構：
