spring-boot开发基础项目

结构

开发项目，我们的第一点就是jar，由于使用IDEA开发项目，我创建的maven项目，我就直接给pom文件了

<?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">
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.1.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <modelVersion>4.0.0</modelVersion>

    <artifactId>11Exam</artifactId>
    <packaging>war</packaging>

    <name>11Exam Maven Webapp</name>
    <!-- FIXME change it to the project's website -->
    <url>http://www.example.com</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.7</maven.compiler.source>
        <maven.compiler.target>1.7</maven.compiler.target>
        <java.version>1.7</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-logging</artifactId>
        </dependency>
        <!-- 核心依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!-- 可以实现热部署，在IDEA上实现热部署还需一些额外的配置，请查阅资料 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional>
            <scope>runtime</scope>
        </dependency>

        <!-- JDBC for mysql -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>

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

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

        <!-- alibaba的druid数据库连接池 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.0.11</version>
        </dependency>

        <!-- 分页插件 -->
        <!-- https://mvnrepository.com/artifact/com.github.pagehelper/pagehelper-spring-boot-starter -->
        <!-- 分页插件 -->
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>1.2.3</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>

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

    </dependencies>
    <build>
        <finalName>11Exam</finalName>
    </build>
</project>

还有我们的配置文件

大配置一个

application.yml 是yml

server:
  port: 8080
spring:
    thymeleaf:
        prefix: classpath:/templates/
        mode: HTML5
        cache: false
    datasource:
        name: test
        url: jdbc:mysql://localhost:3306/test
        username: root
        password:
        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
mybatis:
  mapper-locations: classpath:mapping/*.xml
  type-aliases-package: cn.studet.entity

这里面我们配置了，端口号，配置了连接数据库的基本配置。

我使用的是MySql数据库。

给你们看一下表

随意加了一点数据

现在开始开发

实体类

package cn.studet.entity;

import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import org.springframework.format.annotation.DateTimeFormat;

import java.util.Date;

/**
 * Created by 维吉的笔记本 on 2018/6/23.
 */
public class AriModel {

    private Integer id;
    private String   district;
    @DateTimeFormat(pattern = "yyyy-MM-dd hh:mm:ss")
    @JsonSerialize(using = JsonDateSerializer.class)
    private Date  monitorTime;
    private Integer pm10;
    private Integer pm25;
    private String monitoringStation;
    private Date createDate;

    @Override
    public String toString() {
        return "AriModel{" +
                "id=" + id +
                ", district='" + district + '\'' +
                ", monitorTime=" + monitorTime +
                ", pm10=" + pm10 +
                ", pm25=" + pm25 +
                ", monitoringStation='" + monitoringStation + '\'' +
                ", createDate=" + createDate +
                '}';
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getDistrict() {
        return district;
    }

    public void setDistrict(String district) {
        this.district = district;
    }

    public Date getMonitorTime() {
        return monitorTime;
    }

    public void setMonitorTime(Date monitorTime) {
        this.monitorTime = monitorTime;
    }

    public Integer getPm10() {
        return pm10;
    }

    public void setPm10(Integer pm10) {
        this.pm10 = pm10;
    }

    public Integer getPm25() {
        return pm25;
    }

    public void setPm25(Integer pm25) {
        this.pm25 = pm25;
    }

    public String getMonitoringStation() {
        return monitoringStation;
    }

    public void setMonitoringStation(String monitoringStation) {
        this.monitoringStation = monitoringStation;
    }

    public Date getCreateDate() {
        return createDate;
    }

    public void setCreateDate(Date createDate) {
        this.createDate = createDate;
    }
}

这是对应表的实体类。

现在来写小配置

<?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="cn.studet.dao.IAridao" >

    <select id="findAll" resultType="AriModel">
        select * from air_quality_index
    </select>

    <select id="findlittl" resultType="AriModel">
        select * from `air_quality_index`
        <where>
            <if test='district!="0"'>
                and district=#{district}
            </if>
        </where>
    </select>

    <insert id="insert">
        insert into air_quality_index(district,monitorTime,pm10,pm25,monitoringStation,createDate)
        values
        (#{district},#{monitorTime},#{pm10},#{pm25},#{monitoringStation},now())
    </insert>
    
    <delete id="dele">
        DELETE FROM `air_quality_index`  WHERE id=#{id}
    </delete>
    
    <select id="findone" resultType="AriModel">
        SELECT * FROM `air_quality_index` WHERE id=#{id}
    </select>
    
    <update id="update">
        UPDATE `air_quality_index`
        SET district=#{district},monitorTime=#{monitorTime},pm10=#{pm10},pm25=#{pm25},monitoringStation=#{monitoringStation}
        WHERE id=#{id}
    </update>
    
</mapper>

这是放在我们的mapping下面的

和我们mybatis写的差不多。

页面我也发一下。

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <link rel="stylesheet" th:href="@{/css/bootstrap.min.css}">
    <!--引入js的时候切记 不需要加 springboot的默认文件名称-->
    <script type="text/javascript" th:src="@{/js/jquery-1.8.3.min.js}"></script>
    <script type="text/javascript" th:src="@{/js/jquery.pagination.js}"></script>
    <script type="text/javascript" th:src="@{/js/bootstrap-modal.js}"></script>
    <script type="text/javascript">
           window.onload=function () {
               $("tr:odd").css("background","pink");
           }

    </script>
    <title>Title</title>
    <style type="text/css">
        table{
            border-collapse: collapse;
        }
    </style>

</head>
<body>
<table  width="70%" border="1" align="center" id="list">
     <caption><h1 style="height: 50px;line-height5:0px;border: 1px">空气质量检测信息库</h1>
       按区域查询 <select name="district" id="ourSelect">
             <option value="0">不限</option>
             <option value="西城区">西城区</option>
             <option value="东城区">东城区</option>
             <option value="海淀区">海淀区</option>
             <option value="丰台区">丰台区</option>
         </select>
         <input type="button" onclick="myselect()" value="查找"/>
         <a href="/goAddPage">添加空气质量信息</a>
     </caption>
    <thead>
    <tr class="t_head">
        <th>序号</th>
        <th>区域</th>
        <th>检测时间</th>
        <th>PM10数据</th>
        <th>PM2.5数据局</th>
        <th>监测站</th>
        <th>删除</th>
    </tr>
    </thead>
    <tbody id="list-content">
    </tbody>
</table>
<div  class="pagination" id="pagination"></div>
<div  id="isOK"></div>
<script type="text/javascript">
   $(function () {
       $("#update").hide();
   })
    load();  //默认初始化
    /*点击查询的触发事件*/
   function  load() {
       $.ajax({
           url: "/findAll ",
           type: "post",
           success: function (data) {
               //清空数据
               $("#list-content").html('');
               //追加数据
               $.each(data, function (i, dom) {
                   //一个dom就是一个新闻对象
                   $("#list-content").append("<tr><td>"+ dom.id + "</td><td><a onclick='update("+dom.id+")'>"+dom.district+"</a>" + "</td><td>" + dom.monitorTime + "</td><td>" + dom.pm10 + "</td><td >" + dom.pm25 + "</td><td>"+
                       dom.monitoringStation+"</td><td><a href='/de/"+dom.id+"' >&nbsp;删除</a></td></tr>");
               });
               $("tr:odd").css("background","pink");
           }
       });
   };
   
   function myselect() {
           $.ajax({
               url: "/selectByCondition",
               type: "post",
               data:{"district":$("#ourSelect").val()},
               success: function (data) {
                   //清空数据
                   $("#list-content").html('');
                   //追加数据
                   $.each(data, function (i, dom) {
                       //一个dom就是一个新闻对象
                       $("#list-content").append("<tr><td>"+ dom.id + "</td><td><a onclick='update("+dom.id+")'>"+dom.district+"</a>" + "</td><td>" + dom.monitorTime + "</td><td>" + dom.pm10 + "</td><td >" + dom.pm25 + "</td><td>"+
                           dom.monitoringStation+"</td></tr>");
                   });
                   $("tr:odd").css("background","pink");
               }
           });
   };



   

   function update(id) {
       $("#update").show();
       $("#list").hide();
       $.ajax({
           url:'/goUpdatePage',
           type:"post",
           data:{"id":id},
           success:function(data){
               $("[name=id]").val(data.id);
               $("[name=district]").val(data.district);
               $("[name=monitorTime]").val(data.monitorTime);
               $("[name=pm10]").val(data.pm10);
               $("[name=pm25]").val(data.pm25);
               $("[name=monitoringStation]").val(data.monitoringStation);
           }
       });

   }


</script>
<center>
<div id="update">
    <h2>空气质量信息维护页面</h2>
    <form method="post" action="/updateAir">
        <input type="hidden" name="id"/>
        <p>监测区域: <select name="district">

            <option value="0">不限</option>
            <option value="西城区">西城区</option>
            <option value="东城区">东城区</option>
            <option value="海淀区">海淀区</option>
            <option value="丰台区">丰台区</option>
        </select></p>
        <p>监测日期: <input type="text" name="monitorTime" /></p>
        <p>PM10值: <input type="text" name="pm10" /></p>
        <p>PM2.5值: <input type="text" name="pm25" /></p>
        <p>监测站: <input type="text"  name="monitoringStation"/></p>
        <input type="submit" value="更新"/>
        <input type="button" onclick="javascript:$('#list').show();$('#update').hide()" value="返回"/>
    </form>

</div>
</center>
</body>
</html>

这是我们主界面，展示全部，以及查询展示。还有update操作也在。

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script type="text/javascript" th:src="@{/js/jquery-1.8.3.min.js}"></script>
    <style type="text/css">
        #box{
            width:30%;
            margin: 0px auto;
        }
    </style>
    <script type="text/javascript">
        function checkInfo() {
            var district=$("[name=district]").val();
            var monitorTime=$("[name=monitorTime]").val();
            var pm10temp=$("[name=pm10]").val();
            var pm10=parseInt(pm10temp);
            var pm25temp=$("[name=pm25]").val();
            var pm25=parseInt(pm25temp);
            var monitoringStation=$("[name=monitoringStation]").val();
            if(monitorTime==""){
                alert("检测时间不能为空");
                return false;
            }
            if(pm10temp==""){
                alert("pm10的值不能为空");
                return false;
            }
            var reg=/^\d+$/;
            if(!reg.test(pm10)){
                alert('pm10只能为正整数');
                return false;
            }

            if(pm25temp==""){
                alert("pm25不能为空");
                return false;
            }
            if(monitoringStation==""){
                alert("监测站不能为空");
                return false;
            }
            if(district=="不限"){
                alert("监测区域不能选择不限");
                return false;
            }
            return true;
        }

        $(function () {
            $("#form1").submit(function () {
                return checkInfo();
            });
        });
    </script>
</head>
<body>
    <div id="box">
          <h2>添加空气质量信息</h2>
        <form id="form1" method="post" action="/addAir">
            <p>监测区域: <select name="district">
                <option value="不限">不限</option>
                <option value="西城区">西城区</option>
                <option value="东城区">东城区</option>
                <option value="海淀区">海淀区</option>
                <option value="丰台区">丰台区</option>
            </select></p>
            <p>监测日期: <input type="text"name="monitorTime"/></p>
            <p>PM10值: <input type="text"name="pm10"/></p>
            <p>PM2.5值: <input type="text"name="pm25"/></p>
            <p>监测站: <input type="text"name="monitoringStation"/></p>
            <input type="submit" value="提交"/>
        </form>
    </div>



<script type="text/javascript">

</script>
</body>
</html>

现在开始各个层面的书写

dao

package cn.studet.dao;

import cn.studet.entity.AriModel;

import java.util.List;

/**
 * Created by 维吉的笔记本 on 2018/6/23.
 */
public interface IAridao {

    public List<AriModel> findAll()throws  Exception;

    public List<AriModel> findlittl(AriModel district)throws Exception;

    public  int insert(AriModel ariModel);

     public int dele(int id);

    public AriModel findone(int id);

    public int update(AriModel ariModel);
}

我在之中定义了

查询所有查询单个添加修改删除查分类

的 6 的接口方法

对应上面的配置文件。

service层

package cn.studet.service;

import cn.studet.entity.AriModel;

import java.util.List;

/**
 * Created by 维吉的笔记本 on 2018/6/23.
 */
public interface IAriservice {

    public List<AriModel> findAll()throws  Exception;

    public List<AriModel> findlittl(AriModel district)throws Exception;

    public  int insert(AriModel ariModel);

     public int  dele(int id);

    public AriModel findone(int id);

    public  int update(AriModel ariModel);
}

package cn.studet.service.impl;

import cn.studet.dao.IAridao;
import cn.studet.entity.AriModel;
import cn.studet.service.IAriservice;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

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

/**
 * Created by 维吉的笔记本 on 2018/6/23.
 */

@Service("ariservice")
public class Ariserviceimpl implements IAriservice {

    @Resource(name = "IAridao")
    private IAridao aridao;

    @Override
    @Transactional
    public List<AriModel> findAll() throws Exception {
        return aridao.findAll();
    }

    @Override
    public List<AriModel> findlittl(AriModel district) throws Exception {
        return aridao.findlittl(district);
    }

    @Override
    public int insert(AriModel ariModel) {
        return aridao.insert(ariModel);
    }

    @Override
    public int dele(int id) {
        return aridao.dele(id);
    }

    @Override
    public AriModel findone(int id) {
        return aridao.findone(id);
    }

    @Override
    public int update(AriModel ariModel) {
        return aridao.update(ariModel);
    }
}

下面我们来说处理器方法：

package cn.studet.controller;

import cn.studet.entity.AriModel;
import cn.studet.service.IAriservice;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

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

@Controller
public class SpringbootApplication {

    @Resource(name="ariservice")
     private IAriservice iAriservice;

    @RequestMapping("/gohome")
    public String  demote() {
        System.out.println("进入");
        return "main";

    }

    @RequestMapping("/findAll")
    @ResponseBody
    public Object findAll() throws Exception {
        List<AriModel> all = iAriservice.findAll();
        System.out.println("输出");
        for(AriModel a:all){
            System.out.println(a);
        }
        return all;
    }

    @RequestMapping("/selectByCondition")
    @ResponseBody
    public Object findltii(String district) throws Exception {
        AriModel ariModel=new AriModel();
        System.out.println("============");
        System.out.println(district);
        System.out.println("============");
        ariModel.setDistrict(district);
        List<AriModel> all=iAriservice.findlittl(ariModel);
        return all;
    }


    @RequestMapping("/addAir")
    public String insert(AriModel ariModel){
        System.out.println(ariModel);
        int insert = iAriservice.insert(ariModel);
        System.out.println("啦啦啦啦啦："+insert);
        return "redirect:gohome";
    }

    @RequestMapping("/goAddPage")
    public String goa(){
         return  "addAir";
    }

    @RequestMapping("/goUpdatePage")
    @ResponseBody
    public Object up(int id){

        AriModel findone = iAriservice.findone(id);

        return findone;

    }

    @RequestMapping("/updateAir")
    public String update(AriModel ariModel){

        System.out.println("===============");
        System.out.println(ariModel);
        System.out.println("===============");

        iAriservice.update(ariModel);

        return "redirect:/gohome";
    }

    @RequestMapping("/de/{id}")
    public String dele(@PathVariable int id){

        System.out.println("===========");
        System.out.println(id);
        System.out.println("============");
        int dele = iAriservice.dele(id);
        System.out.println(dele);
        return "redirect:/gohome";
    }

}

当代青年四大美德：信息秒回，约见守时，按时还钱，不管闲事。

测试类发一下：

package cn.studet;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@SpringBootApplication
@MapperScan("cn.studet.*")
@EnableTransactionManagement
public class ExamApplication {
    public static void main(String[] args) {
        SpringApplication.run(ExamApplication.class, args);
    }
}