SpringBoot-06:SpringBoot增删改查一套完整的考试案例

本此博客记录一套考试题,随后我把项目以及题目发到github上,简单的说一下springboot的开发

本此考试题用Spring+SpringMVC+MyBatis+SpringBoot+MySQL+Druid+.yml配置文件+thymeleaf模板引擎

我会把大量源码放上来,以及整合需要的注意点,大家可以一会去github上下载观看

项目概览:

  

  

  

一,jar包,pom.xml中的配置

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<?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>

    <artifactId>z05springbootmyself_exam</artifactId>
    <packaging>war</packaging>

    <name>z05springbootmyself_exam Maven Webapp</name>
    <!-- FIXME change it to the project's website -->
    <url>http://www.example.com</url>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</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 -->
        <!--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>1.3.1</version>
        </dependency>

        <!--fastJson-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.12</version>
        </dependency>
        <!--druid-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.0.18</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.1</version>
        </dependency>
        <!--thymeleaf  新的模板引擎,比jsp要出色-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <!--jdbc-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>

        <!-- 分页插件 -->
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>1.2.3</version>
        </dependency>




    </dependencies>

    <build>
        <finalName>z05springbootmyself_exam</finalName>
        <!--maven插件-->
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
        <!--xml配置,此是为了将来整合Hibernate或者mybatis
            默认没有需要配置
        -->
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
            </resource>
        </resources>
    </build>
</project>
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  注意点:如果自己工程不是通过官网骨架创建,自己粘的话,小心粘了俩个parent节点,他不会报错,但是在后续就不会下载jar包了

二,数据库脚本,我给一份

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DROP TABLE IF EXISTS `air_quality_index`;
CREATE TABLE `air_quality_index` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `district` varchar(255) NOT NULL,
  `monitorTime` datetime NOT NULL ON UPDATE CURRENT_TIMESTAMP,
  `pm10` int(255) NOT NULL,
  `pm25` int(255) NOT NULL,
  `monitoringStation` varchar(255) NOT NULL,
  `createDate` datetime NOT NULL ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=12 DEFAULT CHARSET=utf8;

-- ----------------------------
-- Records of air_quality_index
-- ----------------------------
INSERT INTO `air_quality_index` VALUES ('1', '西城区', '2018-05-22 09:34:05', '243', '176', '灵境胡同监测站', '2018-05-22 10:57:21');
INSERT INTO `air_quality_index` VALUES ('2', '东城区', '2018-05-22 09:34:05', '27', '33', '东四监测站', '2018-05-22 09:34:35');
INSERT INTO `air_quality_index` VALUES ('3', '海淀区', '2018-05-22 09:34:05', '21', '30', '航天桥监测站', '2018-05-22 09:34:35');
INSERT INTO `air_quality_index` VALUES ('4', '丰台区', '2018-05-22 09:34:05', '24333', '17', '七里庄监测站', '2018-05-22 10:55:20');
INSERT INTO `air_quality_index` VALUES ('5', '西城区', '2018-05-22 09:58:03', '100', '1', '北京某地', '2018-06-22 16:41:51');
INSERT INTO `air_quality_index` VALUES ('6', '东城区', '2018-05-22 09:58:03', '22', '22', '山东某地222333', '2018-05-22 10:54:36');
INSERT INTO `air_quality_index` VALUES ('7', '西城区', '2018-05-22 09:58:03', '22', '22', '天津某地', '2018-05-22 10:57:41');
INSERT INTO `air_quality_index` VALUES ('8', '西城区', '2018-05-22 09:58:03', '122', '232', '山东222', '2018-05-22 10:58:59');
INSERT INTO `air_quality_index` VALUES ('9', '0', '2018-05-22 09:58:03', '22', '22', '北京某地', '2018-05-22 11:26:42');
INSERT INTO `air_quality_index` VALUES ('10', '西城区', '2018-05-22 09:58:03', '22', '22', '天津某地', '2018-06-22 16:42:17');
INSERT INTO `air_quality_index` VALUES ('11', '西城区', '2018-05-22 09:58:03', '1', '22', '灵境胡同监测站', '2018-06-22 16:42:50');
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三,application.yml的配置

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server:
#端口号
  port: 8080
spring:
#模板引擎
    thymeleaf:
        prefix: classpath:/templates/
        mode: HTML5
        cache: false
#阿里的druid
    datasource:
        name: test
        url: jdbc:mysql:///exam_air
        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:
  #映射的xml文件
  mapper-locations: classpath:mapping/*.xml
  #别名
  type-aliases-package: com.happy.entity
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  注意点:他是一种新的模板,yml不可以使用制表符TAB,它通过空格表示层级关系,同样的节点反复出现会有问题

  我在里面配置了tomcat的端口,druid的数据源,以及mybatis的部分配置

四,项目骨架预览

  

五,thymeleaf模板的创建,他是以.html后缀名结尾的文件

  1.主页面:

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<!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>
    </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></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>
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  2.添加页面:

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<!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{
            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>
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  3.修改页面:

  注意点:他是一种新的模板,与jsp写法有不同,展示数据的方式,引用js,css都不太一样,也不同与EL,JSTL,需要摸索

  它的核心th

<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org">

六,实体类

  注意点:日期类型处理格式

    @DateTimeFormat(pattern = "yyyy-MM-dd hh:mm:ss")
    @JsonSerialize(using = JsonDateSerializer.class)
    /*处理日期格式*/
    private Date monitorTime;

七,工具类---就是处理日期格式的那个工具类

八,Dao层

  1.接口:

  注意:他是一个普通的接口,没有注解是因为我在别处配置了一道,在yml有配置,在启动的那个main方法上面也有一道配置

  2.dao层的xml

  注意:命名空间,别名

  还有那个智能标签if test里面的写法

    直接传的String类型他会报错,说没有getString的方法,所以用map往里传参数

    假如test='address!=0',他会报错,说不可以转换为数字,故写为test='address!="0"'即可

九,service层:

  1.接口:

  2.实现类:

  注意点:和普通的SSM注解开发没有什么太大的区别,值得注意的是事务的运用,需要在main那边开启一道配置

十,controller层:

  普普通通,做过SSM的发现,没什么不同

十一,SpringBoot核心启动类的配置

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package cn.happy;

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

@SpringBootApplication
//扫描mapper映射
@MapperScan("cn.happy.*")
/*开启事务*/
@EnableTransactionManagement
public class ExamApplication {
    public static void main(String[] args) {
        SpringApplication.run(ExamApplication.class, args);
    }
}
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  注意点:开启事务和mybatis的扫描

十二,可以启动项目和调试了

注意:

我没仔细讲js,css,logback,logback就普通配置,无关紧要,css,js放在static下面即可,引入方式可以参考案例,我引用了一个bootstrap的js,这无关紧要,不影响,只需要jquery即可

原文地址:https://www.cnblogs.com/yelanggu/p/10314985.html