springboot+springmvc+mybatis項目整合

更新時間：2018年04月02日 08:55:26 作者：豬點點

這篇文章主要為大家詳細介紹了springboot+springmvc+mybatis項目的整合，具有一定的參考價值，感興趣的小伙伴們可以參考一下

介紹：

　　上篇給大家介紹了ssm多模塊項目的搭建，在搭建過程中spring整合springmvc和mybatis時會有很多的東西需要我們進行配置，這樣不僅浪費了時間，也比較容易出錯，由于這樣問題的產(chǎn)生，Pivotal團隊提供了一款全新的框架，該框架使用了特定的方式來進行配置，從而使開發(fā)人員不再需要定義樣板化的配置。通過這種方式，Spring Boot致力于在蓬勃發(fā)展的快速應(yīng)用開發(fā)領(lǐng)域(rapid application development)成為領(lǐng)導(dǎo)者。

特點:

1. 創(chuàng)建獨立的Spring應(yīng)用程序
2. 嵌入的Tomcat，無需部署WAR文件
3. 簡化Maven配置
4. 自動配置Spring
5. 提供生產(chǎn)就緒型功能，如指標，健康檢查和外部配置
6. 絕對沒有代碼生成和對XML沒有要求配置
(以上大部分內(nèi)容摘自百度百科)

ok，關(guān)于springboot的講解就到這里大家想了解的更詳細可以自行百度。

搭建springboot項目我推薦大家用idea或者sts（spring tool suite spring公司自己研發(fā)的一款編輯器），我現(xiàn)在用的是idea，所以接下來我是用idea搭建項目的

一、創(chuàng)建項目

填寫完Group和Atrifact后點擊下一步，這里我選擇的是jar，因為官方文檔推薦的是打包成JAR，所以這里就不過多解釋了。

這里勾選上web

這里勾選上MySQL、JDBC和Mybatis點擊下一步

這里輸入項目名和項目路徑后點擊完成

這是新建完成后的項目結(jié)構(gòu)

二、添加pom.xml依賴

因為springboot不推薦使用jsp做頁面，如果想要使用就必需的添加jsp的依賴

<?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.chaoqi</groupId>
 <artifactId>springboot_demo2</artifactId>
 <version>0.0.1-SNAPSHOT</version>
 <packaging>jar</packaging>

 <name>springboot_demo2</name>
 <description>Demo project for Spring Boot</description>

 <parent>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-parent</artifactId>
  <version>2.0.0.RELEASE</version>
  <relativePath/>
 </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-jdbc</artifactId>
  </dependency>
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-web</artifactId>
  </dependency>
  <dependency>
   <groupId>org.mybatis.spring.boot</groupId>
   <artifactId>mybatis-spring-boot-starter</artifactId>
   <version>1.3.2</version>
  </dependency>

  <dependency>
   <groupId>mysql</groupId>
   <artifactId>mysql-connector-java</artifactId>
   <scope>runtime</scope>
  </dependency>
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-test</artifactId>
   <scope>test</scope>
  </dependency>
  <!--添加jsp依賴 -->
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-tomcat</artifactId>
  </dependency>
  <dependency>
   <groupId>org.apache.tomcat.embed</groupId>
   <artifactId>tomcat-embed-jasper</artifactId>
  </dependency>
 </dependencies>

 <build>
  <plugins>
   <plugin>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-maven-plugin</artifactId>
   </plugin>
  </plugins>
 </build>


</project>

三、springboot整合springmvc

因為在創(chuàng)建項目的時候我們選擇了mybatis和jdbc所以在這里也要把他們兩也給配置進去

編輯application.properties

# 頁面默認前綴目錄
spring.mvc.view.prefix=/WEB-INF/jsp/
# 響應(yīng)頁面默認后綴
spring.mvc.view.suffix=.jsp

#開發(fā)配置
spring.datasource.driverClassName = com.mysql.jdbc.Driver
spring.datasource.url = jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8
spring.datasource.username = root
spring.datasource.password = 123456

# mybatis接口文件位置
mybatis.mapper-locations: classpath:mapper/*.xml
mybatis.type-aliases-package: com.chaoqi.springboot_demo2.domain

如果大家習(xí)慣用application.yml那也可以用，但是用application.yml在第一次啟動項目的時候一定要maven clean一下，不然會報錯。

server:
 port: 8080

spring:
 mvc:
 view:
  prefix: /WEB-INF/jsp/
  suffix: .jsp
 datasource:
 url: jdbc:mysql://localhost:3306/test?characterEncoding=UTF-8&useUnicode=true&useSSL=false
 username: root
 password: 123456
 driver-class-name: com.mysql.jdbc.Driver

mybatis:
 mapper-locations: classpath:mapping/*.xml
 type-aliases-package: com.chaoqi.springboot_demo2.domain

編輯完application.properties之后再src/mian下創(chuàng)建webapp目錄，結(jié)構(gòu)如下

新建IndexController

package com.chaoqi.springboot_test.web;


import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class IndexController {
　　private static final String INDEX = "index";
 @RequestMapping("/show")
 public String getIndex() {
  return INDEX;
 }
}

運行main函數(shù)

訪問頁面，成功

四、springboot整合mybatis

創(chuàng)建數(shù)據(jù)庫表

-- ----------------------------
-- Table structure for music_info
-- ----------------------------
DROP TABLE IF EXISTS `music_info`;
CREATE TABLE `music_info` (
 `id` int(10) NOT NULL AUTO_INCREMENT COMMENT '主鍵id',
 `singer_name` varchar(100) NOT NULL COMMENT '歌手名',
 `music_size` varchar(100) NOT NULL COMMENT '歌曲大小',
 `music_name` varchar(100) NOT NULL COMMENT '歌曲名',
 PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;

-- ----------------------------
-- Records of music_info
-- ----------------------------
INSERT INTO `music_info` VALUES ('1', '小三', '3.2M', '起風了');
INSERT INTO `music_info` VALUES ('2', '劉德華', '3.0M', '忘情水');
INSERT INTO `music_info` VALUES ('3', '豬點點', '5.0M', '會寫程序的小豬');

創(chuàng)建pojo

package com.chaoqi.springboot_test.dao.domain;

public class MusicInfo {
 // 主鍵id
 private Integer id;

 // 歌手名
 private String singerName;

 // 歌曲大小
 private String musicSize;

 // 歌曲名
 private String musicName;

 /**
  * 獲取 主鍵id music_info.id
  *
  * @return 主鍵id
  */
 public Integer getId() {
  return id;
 }

 /**
  * 設(shè)置 主鍵id music_info.id
  *
  * @param id 主鍵id
  */
 public void setId(Integer id) {
  this.id = id;
 }

 /**
  * 獲取 歌手名 music_info.singer_name
  *
  * @return 歌手名
  */
 public String getSingerName() {
  return singerName;
 }

 /**
  * 設(shè)置 歌手名 music_info.singer_name
  *
  * @param singerName 歌手名
  */
 public void setSingerName(String singerName) {
  this.singerName = singerName == null ? null : singerName.trim();
 }

 /**
  * 獲取 歌曲大小 music_info.music_size
  *
  * @return 歌曲大小
  */
 public String getMusicSize() {
  return musicSize;
 }

 /**
  * 設(shè)置 歌曲大小 music_info.music_size
  *
  * @param musicSize 歌曲大小
  */
 public void setMusicSize(String musicSize) {
  this.musicSize = musicSize == null ? null : musicSize.trim();
 }

 /**
  * 獲取 歌曲名 music_info.music_name
  *
  * @return 歌曲名
  */
 public String getMusicName() {
  return musicName;
 }

 /**
  * 設(shè)置 歌曲名 music_info.music_name
  *
  * @param musicName 歌曲名
  */
 public void setMusicName(String musicName) {
  this.musicName = musicName == null ? null : musicName.trim();
 }

 @Override
 public String toString() {
  return "MusicInfo{" +
    "id=" + id +
    ", singerName='" + singerName + '\'' +
    ", musicSize='" + musicSize + '\'' +
    ", musicName='" + musicName + '\'' +
    '}';
 }
}

創(chuàng)建mapper.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.chaoqi.springboot_test.dao.mapper.MusicInfoMapper">
 <resultMap id="BaseResultMap" type="com.chaoqi.springboot_test.dao.domain.MusicInfo">
 <id column="id" jdbcType="INTEGER" property="id" />
 <result column="singer_name" jdbcType="VARCHAR" property="singerName" />
 <result column="music_size" jdbcType="VARCHAR" property="musicSize" />
 <result column="music_name" jdbcType="VARCHAR" property="musicName" />
 </resultMap>
</mapper>

創(chuàng)建mapper

package com.chaoqi.springboot_test.dao.mapper;

import com.chaoqi.springboot_test.dao.domain.MusicInfo;
import org.apache.ibatis.annotations.ResultMap;
import org.apache.ibatis.annotations.Select;

import java.util.List;

public interface MusicInfoMapper {
 @ResultMap("BaseResultMap")
 @Select("select * from music_info")
 List<MusicInfo> selectAll(MusicInfo musicInfo);
}

service接口

package com.chaoqi.springboot_test.service;

import com.chaoqi.springboot_test.dao.domain.MusicInfo;
import java.util.List;
public interface MusicInfoService {

 public List<MusicInfo> getMusicInfo(MusicInfo musicInfo);
}

service實現(xiàn)類

package com.chaoqi.springboot_test.service.impl;

import com.chaoqi.springboot_test.dao.domain.MusicInfo;
import com.chaoqi.springboot_test.dao.mapper.MusicInfoMapper;
import com.chaoqi.springboot_test.service.MusicInfoService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class MusicInfoServiceImpl implements MusicInfoService {

 @Autowired
 private MusicInfoMapper musicInfoMapper;

 @Override
 public List<MusicInfo> getMusicInfo(MusicInfo musicInfo) {
  List<MusicInfo> musicInfos = musicInfoMapper.selectAll(null);
  return musicInfos;
 }
}

創(chuàng)建完成后的結(jié)構(gòu)如下

編輯indexController

package com.chaoqi.springboot_test.web;

import com.chaoqi.springboot_test.dao.domain.MusicInfo;
import com.chaoqi.springboot_test.service.MusicInfoService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.List;

@Controller
public class IndexController {

 private static final String INDEX = "index";
 @Autowired
 private MusicInfoService musicInfoService;

 @RequestMapping("/show")
 public String getIndex() {
  return INDEX;
 }

 @RequestMapping("/music")
 @ResponseBody
 public List<MusicInfo> getMusicInfo(MusicInfo musicInfo) {
  List<MusicInfo> musicInfoList = musicInfoService.getMusicInfo(null);
  return musicInfoList;
 }
}

給SpringbootTestApplication類加上注解@MapperScan("com.chaoqi.springboot_test.dao.mapper")

package com.chaoqi.springboot_test;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@MapperScan("com.chaoqi.springboot_test.dao.mapper")
public class SpringbootTestApplication {

 public static void main(String[] args) {
  SpringApplication.run(SpringbootTestApplication.class, args);
 }
}

運行項目，成功，springboot+springmvc+mybatis整合完成（源碼下載地址）