spring boot+mybatis 简单的应用

项目结构



pom.xml

<?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>springboot</groupId>
    <artifactId>springboot</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <!--继承自Spring Boot stater parent-->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.6.RELEASE</version>
    </parent>

    <!--依赖-->
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--模板引擎jar包-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <!--Mysql-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <!--alibaba druid 数据库连接池，并且能够提供强大的监控和扩展功能。-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.0.18</version>
        </dependency>
        <!--mybatis-->
        <!-- https://mvnrepository.com/artifact/org.mybatis.spring.boot/mybatis-spring-boot-starter -->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.0</version>
        </dependency>
        <!--json-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.21</version>
        </dependency>
    </dependencies>


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

application.yml

server:
  port : 8080
  context-path: /test

spring:
  mvc:
    view:
      prefix: classpath:/templates/
      suffix: .html

  datasource:
    url: jdbc:mysql://localhost:3306/study
    username: root
    password: qq123456
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.jdbc.Driver
    filters: stat
    maxActive: 20
    initialSize: 1
    maxWait: 60000
    minIdle: 1
    timeBetweenEvictionRunsMillis: 60000
    minEvictableIdleTimeMillis: 300000
    validationQuery: select 'x'
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
    poolPreparedStatements: true
    maxOpenPreparedStatements: 20

Application

package com.study.hgf;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;

/**
 * Created by hasee on 2017/6/25.
 */
@EnableAutoConfiguration
@ComponentScan
@MapperScan("com.study.hgf.dao.mapper")
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class,args);
    }
}

User

package com.study.hgf.dao.bo;

/**
 * Created by hasee on 2017/8/14.
 */

public class User {
    private Integer id_;
    private String name_;
    private String pass_;
    private Integer age_;

    public Integer getId_() {
        return id_;
    }

    public void setId_(Integer id_) {
        this.id_ = id_;
    }

    public String getName_() {
        return name_;
    }

    public void setName_(String name_) {
        this.name_ = name_;
    }

    public String getPass_() {
        return pass_;
    }

    public void setPass_(String pass_) {
        this.pass_ = pass_;
    }

    public Integer getAge_() {
        return age_;
    }

    public void setAge_(Integer age_) {
        this.age_ = age_;
    }
}

UserMapper

package com.study.hgf.dao.mapper;

import com.study.hgf.dao.bo.User;
import org.apache.ibatis.annotations.Select;

import java.util.List;

/**
 * Created by hasee on 2017/8/14.
 */
public interface UserMapper {
    @Select("select id_,name_,pass_,age_ from users")
    public List<User> getUserList();
}

UserService

package com.study.hgf.service;

import com.study.hgf.dao.bo.User;
import com.study.hgf.dao.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * Created by hasee on 2017/8/14.
 */
@Service
public class UserService {
    @Autowired
    private UserMapper userMapper;

    public List<User> getUserList(){
        return userMapper.getUserList();
    }
}

LoginController

package com.study.hgf.controller;

import com.alibaba.fastjson.JSON;
import com.study.hgf.service.UserService;
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.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

/**
 * Created by hasee on 2017/6/25.
 */
@Controller
public class LoginController {
    @Autowired
    private UserService userService;
    @RequestMapping("/")
    @ResponseBody
    public String home(){
        return JSON.toJSONString(userService.getUserList());
    }
}

运行结果