springboot+springmvc+mybatis項目整合

2024-07-14 08:39:49

字體：大中小

來源：轉載

供稿：網友

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致力于在蓬勃發展的快速應用開發領域(rapid application development)成為領導者。

特點:

1. 創建獨立的Spring應用程序
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
(以上大部分內容摘自百度百科)

ok，關于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公司自己研發的一款編輯器），我現在用的是idea，所以接下來我是用idea搭建項目的

一、創建項目

springboot,springmvc,mybatis

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。

springboot,springmvc,mybatis

這里勾選上web

springboot,springmvc,mybatis

這里勾選上MySQL、JDBC和Mybatis點擊下一步

springboot,springmvc,mybatis

這里輸入項目名和項目路徑后點擊完成

springboot,springmvc,mybatis

這是新建完成后的項目結構

springboot,springmvc,mybatis

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/# 響應頁面默認后綴spring.mvc.view.suffix=.jsp#開發配置spring.datasource.driverClassName = com.mysql.jdbc.Driverspring.datasource.url = jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8spring.datasource.username = rootspring.datasource.password = 123456# mybatis接口文件位置mybatis.mapper-locations: classpath:mapper/*.xmlmybatis.type-aliases-package: com.chaoqi.springboot_demo2.domain

如果大家習慣用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: 8080spring: 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.Drivermybatis: mapper-locations: classpath:mapping/*.xml type-aliases-package: com.chaoqi.springboot_demo2.domain

編輯完application.properties之后再src/mian下創建webapp目錄，結構如下

springboot,springmvc,mybatis

新建IndexController

springboot,springmvc,mybatis

package com.chaoqi.springboot_test.web;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;@Controllerpublic class IndexController {　　private static final String INDEX = "index"; @RequestMapping("/show") public String getIndex() {  return INDEX; }}

運行main函數

springboot,springmvc,mybatis

訪問頁面，成功

springboot,springmvc,mybatis

四、springboot整合mybatis

創建數據庫表

-- ------------------------------ 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;@Servicepublic class MusicInfoServiceImpl implements MusicInfoService { @Autowired private MusicInfoMapper musicInfoMapper; @Override public List<MusicInfo> getMusicInfo(MusicInfo musicInfo) {  List<MusicInfo> musicInfos = musicInfoMapper.selectAll(null);  return musicInfos; }}

創建完成后的結構如下

springboot,springmvc,mybatis

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;@Controllerpublic 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）

springboot,springmvc,mybatis