前言
Spring boot + Mybatis + Thymeleaf + Druid +mySql
開發環境(小編使用的版本)
JDK版本 :1.8及以上 (JDK1.8);
開發工具 :Intellij IDEA (IDEA2018.2);
伺服器 :Tomcat(務必比JDK版本高,小編不在解釋(Jar包不用配置、War需要配置)) (Tomcat9) ;
JRE包 :Maven倉庫 (Maven3.6);
資料庫 :MySql(MySql5.5) ;
正題
Spring boot :2.1.1RELEASE ;
Thymeleaf
Mybatis
阿里雲的連線池 : Druid ;
步驟
1.建立Springboot:
2.建立專案檔案結構
3.POM依賴
如果使用阿里雲的連線池不選擇JDBC,小編用的阿里雲這裡不選擇
點選Finish;
注:可能Maven中無Jar包需要從倉庫下載,需要耐心等待(可以去聽首歌)
4.專案結構
5.POM
<project xmlns="maven.apache.org/POM/4.0.0" xmlns:xsi="www.w3.org/2001/XMLSch…"
xsi:schemaLocation="maven.apache.org/POM/4.0.0 maven.apache.org/xsd/maven-4…">
4.0.0
org.springframework.boot
spring-boot-starter-parent
2.1.1.RELEASE
com.spring
boot
0.0.1-SNAPSHOT
boot
Demo project for Spring Boot
<java.version>1.8</java.version>
org.springframework.boot
spring-boot-devtools
true
com.alibaba
druid-spring-boot-starter
1.1.10
org.springframework.boot
spring-boot-starter-thymeleaf
org.springframework.boot
spring-boot-starter-web
org.mybatis.spring.boot
mybatis-spring-boot-starter
1.3.2
mysql
mysql-connector-java
runtime
org.springframework.boot
spring-boot-starter-test
test
org.springframework.boot
spring-boot-maven-plugin
注:IDEA失效解決方法
6.小編使用的application.properties檔案,專案啟動識別兩種格式的檔案properties和yml檔案:
#快取設定為false, 修改之後馬上生效
spring.thymeleaf.cache=false
spring.thymeleaf.encoding=UTF-8
#spring.thymeleaf.prefix=classpath:/templates/
#spring.thymeleaf.suffix=.html
server.port=8080
server.tomcat.uriEncoding=utf-8
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.url=jdbc:mysql://localhost:3306/web?useUnicode=true&serverTimezone=GMT%2B8&characterEncoding=utf-8&allowMultiQueries=true&useSSL=false
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.druid.driverClassName=com.mysql.cj.jdbc.Driver
#初始化連線
spring.datasource.initialSize=20
#最大空閒數
spring.datasource.maxActive=50
#最小空閒數
spring.datasource.minIdle=10
#獲取連線等待時間
#spring.datasource.druid.max-wait=60000
#最小等待時間
#spring.datasource.minEvictableIdleTimeMillis=3600000
7.其他檔案生成
User.java
package com.spring.boot.bean;
public class User {
public Integer uid;
public String uname;
public String upassword;
public Integer getUid() {
return uid;
}
public void setUid(Integer uid) {
this.uid = uid;
}
public String getUanme() {
return uname;
}
public void setUanme(String uanme) {
this.uname = uanme;
}
public String getUpassword() {
return upassword;
}
public void setUpassword(String upassword) {
this.upassword = upassword;
}
@Override
public String toString() {
return "User{" +
"uid=" + uid +
", uname='" + uname + ''' +
", upassword='" + upassword + ''' +
'}';
}
}
UserDao.java
註解的形式,小編感覺比XML好用
package com.spring.boot.dao;
import com.spring.boot.bean.User;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;
import java.util.List;
public interface UserDao {
@Select("select * from user")
public List AllUser();
@Update(" ")
public int Update(User user);
}
UserService.java
package com.spring.boot.service;
import com.spring.boot.bean.User;
import java.util.List;
public interface UserService {
public List AllUser();
public int Update(User user);
}
UserImpl.java
主要是註解問題Service可以命名,主要還是看自己的日常使用
package com.spring.boot.service.impl;
import com.spring.boot.bean.User;
import com.spring.boot.dao.UserDao;
import com.spring.boot.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class UserImpl implements UserService {
@Autowired
private UserDao userDao;
@Override
public List AllUser() {
return userDao.AllUser();
}
@Override
public int Update(User user) {
return userDao.Update(user);
}
}
注:userDao報紅解決方法
UserController.java
package com.spring.boot.controller;
import com.spring.boot.bean.User;
import com.spring.boot.service.impl.UserImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class UserController {
@Autowired
private UserImpl userimpl;
@RequestMapping("/index")
public String index(Model model, User user){
model.addAttribute("user",userimpl.AllUser());
user.uid = 2;
user.uname = "nan";
user.upassword = "lou";
userimpl.Update(user);
System.out.println("******************"+userimpl.AllUser());
System.out.println("******************"+userimpl.Update(user));
return "index";
}
}
index.html
Spring boot+Thymeleaf!
8.介面顯示
注:後續功能再寫!
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