构建第一个Spring Boot2.0应用之集成mybatis（六）

一、环境：

IDE：IntelliJ IDEA 2017.1.1

JDK:1.8.0_161

Maven:3.3.9

springboot:2.0.2.RELEASE

二、步骤

方式一：利用配置文件配置

     1.创建springboot项目，并修改POM.xml配置如下

<?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.yy</groupId>
    <artifactId>sbmybitas</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>sbmybitas</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.2.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>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--jpa-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <!--Mysql数据库驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.46</version>
        </dependency>
        <!--Springboot mybatis依赖-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.2</version>
        </dependency>
        <!-- SpringBoot - MyBatis 逆向工程 -->
        <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
            <version>1.3.2</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 逆向工程 插件 -->
            <plugin>
                 <groupId>org.mybatis.generator</groupId>
                 <artifactId>mybatis-generator-maven-plugin</artifactId>
                 <version>1.3.2</version>
                 <configuration>
                     <!-- 自动生成的配置 -->
                     <configurationFile>${basedir}/src/main/resources/generatorConfig.xml</configurationFile>
                     <!--是否覆盖-->
                     <overwrite>true</overwrite>
                     <!--允许移动生成的文件-->
                     <verbose>true</verbose>
                 </configuration>
            </plugin>
        </plugins>
    </build>

</project>

2. application.properties配置

#数据库连接信息
spring.datasource.url=jdbc:mysql://localhost/test
spring.datasource.username=root
spring.datasource.password=mysql
spring.datasource.driver-class-name=com.mysql.jdbc.Driver

3.generatorConfig.xml配置

<?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>
    <!-- 引入配置文件 -->
    <properties resource="application.properties"/>
    <!-- 指定数据库连接驱动jara地址 -->
    <!-- 数据库驱动:选择本地硬盘上面的数据库驱动包-->
    <classPathEntry location="D:\java\mysql-connector-java-5.1.17.jar"></classPathEntry>

    <!-- 一个数据库一个context -->
    <context id="mysqltable1" targetRuntime="Mybatis3">
        <!-- 生成的pojo，将implements Serializable -->
        <plugin type="org.mybatis.generator.plugins.SerializablePlugin"></plugin>

        <commentGenerator>
            <!-- 是否取消注释 -->
            <!--是否去除自动生成注释true：是 false：否-->
            <property name="suppressAll" value="true"></property>
        </commentGenerator>
          <!--数据库连接的信息：驱动类、连接地址、用户名、密码 -->
        <!--<jdbcConnection-->
                        <!--driverClass="com.mysql.jdbc.Driver"-->
                        <!--connectionURL="jdbc:mysql://localhost:3306/test"-->
                        <!--userId="root"-->
                        <!--password="mysql">-->
        <!--</jdbcConnection>-->
        <jdbcConnection driverClass="${spring.datasource.driver-class-name}"
                         connectionURL="${spring.datasource.url}"
                        userId="${spring.datasource.username}"
                        password="${spring.datasource.password}"/>
        <!--mybatis里专门用来处理NUMERIC和DECIMAL类型的策略-->
        <!-- 默认false，把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer;
          设置为true，把JDBC DECIMAL 和NUMERIC 类型解析为java.math.BigDecimal -->
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false"></property>
        </javaTypeResolver>

        <!--生成模型的包名和位置-->
        <javaModelGenerator targetPackage="com.yy.entity" targetProject="src/main/java">
            <!--enableSubPackages:是否让schema作为报的后缀-->
            <property name="enableSubPackages" value="true"></property>
            <!--从数据库返回的值被清理前后的空格-->
            <property name="trimStrings" value="true"></property>
        </javaModelGenerator>
            <!--生成映射文件的包名和位置 mapper.xml
            注意位置： targetProject="src/main/resources"
            -->
        <sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources">
            <property name="enableSubPackages" value="true"></property>
        </sqlMapGenerator>
        <!--生成DAOMapper的包名和位置 mapper.java-->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.yy.mapper" targetProject="src/main/java">
            <property name="enableSubPackages" value="true"></property>
        </javaClientGenerator>
        <!--table是指定每个表的生成策略-->
        <!--tableName:用于自动生成代码数据库中的表名或视图名，domainObjectName:是对应的实体类名-->
        <table
                tableName="User_Info"
                domainObjectName="UserInfo"
                enableCountByExample="false"
                enableUpdateByExample="false"
                enableDeleteByExample="false"
                enableSelectByExample="false"
                selectByExampleQueryId="false">
            <property name="useActualColumnNames" value="true"></property>
        </table>
    </context>
</generatorConfiguration>

4.自动生成启动配置

打开项目Edit Configurations

新加Maven配置

设置启动命令

配置完成后启动自动生成

显示启动成功

目录结构如下

5.编写controller测试

5.1  修改启动类（Application.java）SbmybitasApplication.java

添加MapperScan，使之能够扫描到mapper接口，

@SpringBootApplication
@MapperScan("com.yy.mapper")
public class SbmybitasApplication {
    public static void main(String[] args) {
        SpringApplication.run(SbmybitasApplication.class,args);
    }
}

5.2 编写HelloContoller测试

import com.yy.entity.UserInfo;
import com.yy.mapper.UserInfoMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

/**
 * Created by Administrator on 2018-05-31.
 */
@Controller
@RequestMapping("/users")
public class HelloController {

    @Autowired
    UserInfoMapper userInfoMapper;
    @RequestMapping("/{id}")
    public  String getUserById(@PathVariable("id") Integer id, ModelMap mp)
    {

        UserInfo userInfo= userInfoMapper.selectByPrimaryKey(id);
        mp.addAttribute("userinfo",userInfo);
        return "index1";
    }
    @RequestMapping("/addUser" )
    public  String addUser(@RequestParam(value="age",required=true) Integer age,
                           @RequestParam (value="name",required = true) String name ,
                           @RequestParam(value="city",required = true) String city ,
                           @RequestParam(value="job",required = true) String job,
                           @RequestParam(value="sex",defaultValue ="1") Integer sex,
                           @RequestParam(value="province",defaultValue ="sichuan") String province ,ModelMap mp)
    {
        UserInfo userInfo=new UserInfo();
        userInfo.setAge(age);
        userInfo.setName(name);
        userInfo.setJob(job);
        userInfo.setCity(city);
        userInfo.setSex(sex);
        userInfo.setProvince(province);
        userInfoMapper.insert(userInfo);
        mp.addAttribute("userinfo",userInfo);
        return "index";
    }
}

若在

@Autowired
UserInfoMapper userInfoMapper;

出现 could not autoWired,No beans of 'UserInfoMapper' type found 提示，

则需修改UserInfoMapper，在类上添加@Component或@Repository 注解，即

package com.yy.mapper;

import com.yy.entity.UserInfo;
import org.apache.ibatis.annotations.Mapper;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Repository;

//@Component(value="userInfoMapper")
//@Component
@Repository
public interface UserInfoMapper {
    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table user_info
     *
     * @mbggenerated Sun Jun 03 22:06:22 CST 2018
     */
    int deleteByPrimaryKey(Integer id);

    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table user_info
     *
     * @mbggenerated Sun Jun 03 22:06:22 CST 2018
     */
    int insert(UserInfo record);

    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table user_info
     *
     * @mbggenerated Sun Jun 03 22:06:22 CST 2018
     */
    int insertSelective(UserInfo record);

    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table user_info
     *
     * @mbggenerated Sun Jun 03 22:06:22 CST 2018
     */
    UserInfo selectByPrimaryKey(Integer id);

    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table user_info
     *
     * @mbggenerated Sun Jun 03 22:06:22 CST 2018
     */
    int updateByPrimaryKeySelective(UserInfo record);

    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table user_info
     *
     * @mbggenerated Sun Jun 03 22:06:22 CST 2018
     */
    int updateByPrimaryKey(UserInfo record);
}

启动项目

、

6.测试

利用postman测试

6.1添加用户信息

参数设置后，send调用，浏览器返回，调用index.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h1>用户信息如下：</h1>
<div th:text="${userinfo.name}">james</div>
</body>
</html>

结果如下

添加信息完成，数据库中记录如下

6.2  根据ID获取刚才添加的用户信息，返回结果如下