springboot整合mybatis与thymeleaf

1.创建springboot项目

　　(1)选择Spring Initializr

　　(2)填写自己的Group 与 Artifact

　　(3)选择依赖框架

　　等待maven下载好依赖和插件即可

2.主配置文件（这里使用的是更为简洁的ylm文件）

　application.yml

　　主要配置了数据源和mapper路径与实体类别名

spring:

  datasource:

    driver-class-name: com.mysql.cj.jdbc.Driver

    url: jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=UTC

    username: root

    password: 330069879

mybatis:

  mapper-locations: classpath:/mapper/*.xml

  type-aliases-package: com.datatest.signup.entity

3.实体类与表的映射关系

　Person.java

package com.datatest.signup.entity;

public class Person {

    private String id;

    private String name;

    private int age;

    private int sex;

    public void setId(String id) {

        this.id = id;

    }

    public void setName(String name) {

        this.name = name;

    }

    public void setAge(int age) {

        this.age = age;

    }

    public void setSex(int sex) {

        this.sex = sex;

    }

    @Override

    public String toString() {

        return "Person{" +

                "id='" + id + '\'' +

                ", name='" + name + '\'' +

                ", age=" + age +

                ", sex=" + sex +

                '}';

    }

}

　　数据库表person

4.mapper.xml　　与 PersonMapper

<?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.datatest.signup.mapper.PersonMapper">

    <select id="queryPersonById" resultType="Person" parameterType="String">

        select * from person where id=#{id}

    </select>

</mapper>

　PersonMapper.java

package com.datatest.signup.mapper;

import com.datatest.signup.entity.Person;

import org.springframework.stereotype.Repository;

@Repository

public interface PersonMapper {

    Person queryPersonById(String id);

}

5.Service层

PersonService.java

package com.datatest.signup.service;

import com.datatest.signup.entity.Person;

public interface PersonService {

    public Person queryPersonById(String id);

}

package com.datatest.signup.service.impl;

import com.datatest.signup.entity.Person;

import com.datatest.signup.mapper.PersonMapper;

import com.datatest.signup.service.PersonService;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

@Service

public class PersonServiceImpl implements PersonService {

    @Autowired

    private PersonMapper personMapper;

    @Override

    public Person queryPersonById(String id) {

        return personMapper.queryPersonById(id);

    }

}

6.controller层

package com.datatest.signup.controller;

import com.datatest.signup.entity.Person;

import com.datatest.signup.service.PersonService;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.PathVariable;

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

import java.util.Map;

@Controller

public class StudentController {

    @Autowired

    private PersonService personService;

    @RequestMapping("query/{id}")

    public String queryPersonById(@PathVariable String id, Map<String,Object> map){

        Person person = personService.queryPersonById(id);

        System.out.println(person);

        map.put("person",person);

        return "result";

    }

}

7.前段页面

index.html

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>sprint boot</title>

</head>

<body>

    <a href="query/P01">查询一个人</a>

</body>

</html>

result.html

<!DOCTYPE html>

<html lang="en" xmlns:th="http://www.thymeleaf.org">

<head>

    <meta charset="UTF-8">

    <title>result</title>

</head>

<body>

    <p th:text="${person}">没有查询到该人</p>

</body>

</html>

8.主程序文件

package com.datatest.signup;

import org.mybatis.spring.annotation.MapperScan;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

@MapperScan("com.datatest.signup.mapper")

@SpringBootApplication

public class SignupApplication {

    public static void main(String[] args) {

        SpringApplication.run(SignupApplication.class, args);

    }

}

9.测试效果

巴特西

springboot整合mybatis与thymeleaf

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