菜鸟——springboot+mybatis+maven

网上找了很多资料，学习如何搭建springboot，由于刚刚接触springboot，不是很熟练，通过参考网上别人搭建的例子，自己也搭建了一个简单的springboot+mybaits+maven

网上说springboot很简单，可是很多人都掉了很多次坑，但是说破了什么都不是~跟着我的步骤，你也很快可以迅速搭建一个框架啦~

spring boot 主要是专注于后端的东西，最后能放回一个json数据算成功

如果使用spring boot搭建框架，最好不要用jsp来作为视图的展示，spring boot有内嵌的thymeleaf模板引擎（这东西正在了解中），所以最好用thymeleaf来作为前端页面展示，thymeleaf可以完全替代jsp

一、项目结构

Application必须跟其他包在同一级，Application跟其他包放在springboottest目录下（springboottest记得要跟groupid一样？不大确定）

二、maven

具体安装maven，请结合上一篇文章——springboot搭建Hello World

三、启动类

package springboottest;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * Created by JC on 2017/2/21.
 * 启动文件
 */
@SpringBootApplication
public class Application {
    public static void main(String[] args)
    {
        SpringApplication.run(Application.class,args);
    }

}

　　

四、controller

package springboottest.controller;

import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import springboottest.entity.User;
import springboottest.service.UserService;

import javax.annotation.Resource;
import java.util.List;

/**
 * Created by JC on 2017/2/22.
 */
@RestController
@RequestMapping(value = "/user")
public class UserController {

    @Resource(name = "userService")
    private UserService userService;

    @RequestMapping(value = "/findAll")
    public ResponseEntity<List<User>> findAll(){
     return  new ResponseEntity( userService.findAll(), HttpStatus.OK);
    }

}

　　

五、service

package springboottest.service;

import org.omg.CORBA.Object;
import springboottest.entity.User;

import java.util.List;

/**
 * Created by JC on 2017/2/22.
 */
public interface UserService {

    public List<Object> findAll();
}

　　

package springboottest.service.impl;

import org.omg.CORBA.Object;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import springboottest.dao.DaoSupport;
import springboottest.entity.User;
import springboottest.service.UserService;

import javax.annotation.Resource;
import java.util.List;

/**
 * Created by JC on 2017/2/22.
 */
@Service("userService")
public class UserServiceImpl implements UserService {

    @Resource(name = "daoSupport")
    private DaoSupport dao;

    @Override
    public List<Object> findAll() {
        return dao.findAll("UserMapper");
    }
}

　　

六、dao　

package springboottest.dao;

import org.omg.CORBA.Object;
import springboottest.entity.User;

import java.util.List;

/**
 * Created by JC on 2017/2/22.
 */
public interface Dao {

    /**
     * 查找全部user
     */
    public List<Object> findAll(String str);
}

　　

package springboottest.dao;

import org.mybatis.spring.SqlSessionTemplate;
import org.omg.CORBA.Object;
import org.springframework.stereotype.Repository;

import javax.annotation.Resource;
import java.util.List;

/**
 * Created by JC on 2017/2/22.
 */
@Repository("daoSupport")
public class DaoSupport implements Dao{

    @Resource(name = "sqlSessionTemplate")
    private SqlSessionTemplate sqlSessionTemplate;

    /**
     * 查询全部
     * @param str
     * @return
     */
    @Override
    public List<Object> findAll(String str) {
        return sqlSessionTemplate.selectList(str+".findAll");
    }

}

　　

　

七、entity

package springboottest.entity;

/**
 * Created by JC on 2017/2/22.
 */
public class User {

    private String F_ID;

    private String F_USERNAME;

    private String F_PASSWORD;

    public String getF_ID() {
        return F_ID;
    }

    public void setF_ID(String f_ID) {
        F_ID = f_ID;
    }

    public String getF_USERNAME() {
        return F_USERNAME;
    }

    public void setF_USERNAME(String f_USERNAME) {
        F_USERNAME = f_USERNAME;
    }

    public String getF_PASSWORD() {
        return F_PASSWORD;
    }

    public void setF_PASSWORD(String f_PASSWORD) {
        F_PASSWORD = f_PASSWORD;
    }
}

　　

八、UserMapper.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="UserMapper">

    <!--表名 -->
    <sql id="tableName">
		t_user
	</sql>

    <!-- 字段 -->
    <sql id="Field">
		F_ID,
		F_USERNAME,
		F_PASSWORD
	</sql>

    <!-- 字段值 -->
    <sql id="FieldValue">
		#{F_ID},
		#{F_USERNAME},
		#{F_PASSWORD}
	</sql>

    <!-- 列表(全部) -->
    <select id="findAll"  resultType="springboottest.entity.User">
        select
        <include refid="Field"></include>
        from
        <include refid="tableName"></include>
    </select>

</mapper>

　　

九、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>springboottest</groupId>
    <artifactId>springboottest</artifactId>
    <version>1.0-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.0.RELEASE</version>
        <relativePath/>
    </parent>

    <dependencies>

        <!--springboot的基础包-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <!--mysql的依赖包-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <!--加入mybatis-spring-boot-stater-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.1.1</version>
        </dependency>
    </dependencies>

</project>

　　

十、application.yml

# Server settings
server:
  port: 8080
  address: localhost

# DATASOURCE
spring:
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://localhost:3306/test?useUnicode=true&charaterEncoding=utf-8
    username: root
    password: root

# Spring profiles
  spring:
     http:
       encoding:
         charset: utf-8
         enabled: true
         force: true

# Mybatis
mybatis:
  mapper-locations: classpath:/mybatis/*.xml
  type-aliases-package: springboottest.entity

　　

十一、数据库

/*
SQLyog v10.2
MySQL - 5.1.62-community : Database - test
*********************************************************************
*/

/*!40101 SET NAMES utf8 */;

/*!40101 SET SQL_MODE=''*/;

/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
CREATE DATABASE /*!32312 IF NOT EXISTS*/`test` /*!40100 DEFAULT CHARACTER SET utf8 */;

USE `test`;

/*Table structure for table `t_user` */

DROP TABLE IF EXISTS `t_user`;

CREATE TABLE `t_user` (
  `F_ID` int(11) NOT NULL,
  `F_USERNAME` varchar(200) DEFAULT NULL,
  `F_PASSWORD` varchar(200) DEFAULT NULL,
  PRIMARY KEY (`F_ID`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

/*Data for the table `t_user` */

insert  into `t_user`(`F_ID`,`F_USERNAME`,`F_PASSWORD`) values (1,'小李','123'),(2,'小张','456');

/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;

　　

十二、访问，结果返回json数据

右击Application.java-->Run'Application' 启动启动类

访问路径：不需要加项目名字