SpringBoot之单体应用

1.选择springInitializer

 2.填写包名项目名

 3.选择如下框架

 4.项目结构如下

 5.pom文件

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.6.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.blb</groupId>
    <artifactId>ysearch</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>ysearch</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <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>2.1.2</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.10</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
        </resources>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

6.pojo包下TUser类

package com.blb.ysearch.pojo;

public class TUser {
    private Integer uid;

    private String uname;

    private String upwd;

    public Integer getUid() {
        return uid;
    }

    public void setUid(Integer uid) {
        this.uid = uid;
    }

    public String getUname() {
        return uname;
    }

    public void setUname(String uname) {
        this.uname = uname;
    }

    public String getUpwd() {
        return upwd;
    }

    public void setUpwd(String upwd) {
        this.upwd = upwd;
    }
}

7.dao层

TUserMapper类：

package com.blb.ysearch.dao;

import com.blb.ysearch.pojo.TUser;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface TUserMapper {
    int deleteByPrimaryKey(Integer uid);

    int insert(TUser record);

    int insertSelective(TUser record);

    TUser selectByPrimaryKey(Integer uid);

    int updateByPrimaryKeySelective(TUser record);

    int updateByPrimaryKey(TUser record);
}

TUserMapper.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.blb.ysearch.dao.TUserMapper">
  <resultMap id="BaseResultMap" type="com.blb.ysearch.pojo.TUser">
    <!--@mbg.generated-->
    <!--@Table t_user-->
    <id column="uid" jdbcType="INTEGER" property="uid" />
    <result column="uname" jdbcType="VARCHAR" property="uname" />
    <result column="upwd" jdbcType="VARCHAR" property="upwd" />
  </resultMap>
  <sql id="Base_Column_List">
    <!--@mbg.generated-->
    `uid`, uname, upwd
  </sql>
  <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
    <!--@mbg.generated-->
    select 
    <include refid="Base_Column_List" />
    from t_user
    where `uid` = #{uid,jdbcType=INTEGER}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
    <!--@mbg.generated-->
    delete from t_user
    where `uid` = #{uid,jdbcType=INTEGER}
  </delete>
  <insert id="insert" parameterType="com.blb.ysearch.pojo.TUser">
    <!--@mbg.generated-->
    insert into t_user (`uid`, uname, upwd
      )
    values (#{uid,jdbcType=INTEGER}, #{uname,jdbcType=VARCHAR}, #{upwd,jdbcType=VARCHAR}
      )
  </insert>
  <insert id="insertSelective" parameterType="com.blb.ysearch.pojo.TUser">
    <!--@mbg.generated-->
    insert into t_user
    <trim prefix="(" suffix=")" suffixOverrides=",">
      <if test="uid != null">
        `uid`,
      </if>
      <if test="uname != null">
        uname,
      </if>
      <if test="upwd != null">
        upwd,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides=",">
      <if test="uid != null">
        #{uid,jdbcType=INTEGER},
      </if>
      <if test="uname != null">
        #{uname,jdbcType=VARCHAR},
      </if>
      <if test="upwd != null">
        #{upwd,jdbcType=VARCHAR},
      </if>
    </trim>
  </insert>
  <update id="updateByPrimaryKeySelective" parameterType="com.blb.ysearch.pojo.TUser">
    <!--@mbg.generated-->
    update t_user
    <set>
      <if test="uname != null">
        uname = #{uname,jdbcType=VARCHAR},
      </if>
      <if test="upwd != null">
        upwd = #{upwd,jdbcType=VARCHAR},
      </if>
    </set>
    where `uid` = #{uid,jdbcType=INTEGER}
  </update>
  <update id="updateByPrimaryKey" parameterType="com.blb.ysearch.pojo.TUser">
    <!--@mbg.generated-->
    update t_user
    set uname = #{uname,jdbcType=VARCHAR},
      upwd = #{upwd,jdbcType=VARCHAR}
    where `uid` = #{uid,jdbcType=INTEGER}
  </update>
</mapper>

8.service层

TUserService接口类：

package com.blb.ysearch.service;

import com.blb.ysearch.pojo.TUser;

public interface TUserService {
    public void save(TUser user);
    public void remove(Integer uid);
    public void update(TUser user);
    public TUser get(Integer uid);
}

Impl包下TUserService实现类：

package com.blb.ysearch.service.impl;

import com.blb.ysearch.dao.TUserMapper;
import com.blb.ysearch.pojo.TUser;
import com.blb.ysearch.service.TUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service
@Transactional
public class TUserServiceImpl implements TUserService {
    @Autowired
    private TUserMapper tUserMapper;
    @Override
    public void save(TUser user) {
        tUserMapper.insert(user);
    }

    @Override
    public void remove(Integer uid) {
        tUserMapper.deleteByPrimaryKey(uid);
    }

    @Override
    public void update(TUser user) {
        tUserMapper.updateByPrimaryKey(user);
    }

    @Transactional(readOnly = true)
    public TUser get(Integer uid) {
        TUser tUser = tUserMapper.selectByPrimaryKey(uid);
        return tUser;
    }
}

9.controller层

HelloController类：

package com.blb.ysearch.controller;

import com.blb.ysearch.pojo.TUser;
import com.blb.ysearch.service.TUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;

@RestController
public class HelloController {
    @Autowired
    private TUserService tUserService;

    @RequestMapping(value = "/user/add",method = RequestMethod.POST)
    public Map add(@RequestBody TUser user){
        tUserService.save(user);
        Map map=new HashMap();
        map.put("msg","保存成功");
        map.put("status",true);
        return map;
    }

    @RequestMapping(value = "/user/{id}",method = RequestMethod.GET)
    public Map get(@PathVariable("id")Integer id){
        TUser user = tUserService.get(id);
        Map map=new HashMap();
        map.put("msg","查询成功");
        map.put("status",true);
        map.put("data",user);
        return map;
    }
}

10.根包下YsearchApplication类

package com.blb.ysearch;

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

@SpringBootApplication
public class YsearchApplication {

    public static void main(String[] args) {
        SpringApplication.run(YsearchApplication.class, args);
    }

}

11.resources文件夹内application.yml

server:
  port: 9091
spring:
  mybatis:
    mapperLocations:classpath:com/blb/ysearch/dao/*.xml
    typeAliasesPackage:com.blb.ysearch.pojo
  datasource:
    name: mysql
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://127.0.0.1:6666/ssm?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=UTC
    username: root
    password: 123456
    druid:
      initial-size: 5
      min-idle: 5
      max-active: 20
      max-wait: 30000
      time-between-eviction-runs-millis: 60000
      min-evictable-idle-time-millis: 300000
      validation-query: select 1
      test-while-idle: true
      test-on-borrow: false
      test-on-return: false
      pool-prepared-statements: false
      max-pool-prepared-statement-per-connection-size: 20
      connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=6000