SpringBoot + MyBatis 实现对员工的增删改查
2018-08-15 23:31
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SpringBoot + MyBatis 实现对员工的增删改查
一、使用idea新建SpringBoot项目
File——>New——>Project——>Spring Assistant——>Next——>修改报名，项目名等信息——>Next——>
在web中选中web，在SQL中选中MySQL、JDBS、MyBatis——>Next——>Finish
二、修改pom.xml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 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>cn.qiuuuu</groupId> <artifactId>empboot</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>empboot</name> <description>Demo project for Spring Boot</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.4.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.compiler.source>1.8</maven.compiler.source> <maven.compiler.target>1.8</maven.compiler.target> </properties> <dependencies> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-dbcp2</artifactId> <version>2.2.0</version> </dependency> <!-- Spring Boot --> <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> <!-- MyBatis --> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.1.1</version> </dependency> <!--启动时启动内置tomcat --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> </dependency> <!--对Jsp支持 --> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat- 2d90 embed-jasper</artifactId> </dependency> <!-- 支持jstl --> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- MySql驱动 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.21</version> </dependency> <!-- servlet 依赖包 --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <scope>provided</scope> </dependency> <!-- JSTL (JSP standard Tag Library) JSP 标准标签库 --> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> <!-- <scope>provided</scope>--> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.27</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.23</version> </dependency> </dependencies> </project>
三、新建包和相应的接口和类
1、新建包
2、写controller
（1）、EmpController
package cn.qiu.controller;
import cn.qiu.entity.Emp;
import cn.qiu.service.EmpService;
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.ResponseBody;
import javax.annotation.Resource;
import java.util.List;
@Controller
public class EmpController {
@Resource
EmpService empService;
@RequestMapping("/a")
public String a(){
return "emp";
}
@ResponseBody
@RequestMapping("/aa")
public List<Emp> aa(){
return empService.findAll();
}
}
（2）、AddEmpController
package cn.qiu.controller;
import cn.qiu.service.AddEnpService;
import org.apache.ibatis.annotations.Param;
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.ResponseBody;
@Controller
public class AddEmpController {
@Autowired
AddEnpService addEnpService;
@ResponseBody
@RequestMapping("addEmp")
public void addEmp(@Param("name") String name,@Param("sex") String sex,@Param("age") int age,
@Param("address") String address){
addEnpService.addEmp(name,sex,age,address);
}
}
（3）、DeleteEmpController
package cn.qiu.controller;
import cn.qiu.service.DeleteEmpService;
import org.apache.ibatis.annotations.Param;
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.ResponseBody;
@Controller
public class DeleteEmpController {
@Autowired
DeleteEmpService deleteEmpService;
@ResponseBody
@RequestMapping("/delete")
public void deleteByName(@Param("name") String name){
System.out.println("controller"+name);
deleteEmpService.deleteByName(name);
}
}
3、写service
（1）、EmpService
package cn.qiu.service;
import cn.qiu.entity.Emp;
import java.util.List;
public interface EmpService {
public List<Emp> findAll();
}
（2）、AddEmpDao
package cn.qiu.dao;
import org.apache.ibatis.annotations.Mapper;
@Mapper
public interface AddEmpDao {
public void addEmp(String name,String sex,int age,String address);
}
（3）、DeleteEmpDao
package cn.qiu.dao;
import org.apache.ibatis.annotations.Mapper;
@Mapper
public interface DeleteEmpDao {
void deleteByName(String name);
}
4、写serviceImpl
（1）、EmpServiceImpl
package cn.qiu.service.impl;
import cn.qiu.dao.EmpDao;
import cn.qiu.entity.Emp;
import cn.qiu.service.EmpService;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
import java.util.List;
@Service(value = "userService")
public class EmpServiceImpl implements EmpService {
@Resource
EmpDao empDao;
@Override
public List<Emp> findAll() {
return empDao.findAll();
}
}
（2）、AddEmpServiceImpl
package cn.qiu.service.impl;
import cn.qiu.dao.AddEmpDao;
import cn.qiu.service.AddEnpService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class AddEmpServiceImpl implements AddEnpService {
@Autowired
AddEmpDao addEmpDao;
@Override
public void addEmp(String name, String sex, int age, String address) {
addEmpDao.addEmp(name,sex,age,address);
}
}
（3）、DeleteEmpServiceImpl
package cn.qiu.service.impl;
import cn.qiu.dao.DeleteEmpDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class DeleteEmpServiceImpl implements cn.qiu.service.DeleteEmpService {
@Autowired
DeleteEmpDao deleteDao;
@Override
public void deleteByName(String name) {
System.out.println("serviceImpl"+name);
deleteDao.deleteByName(name);
}
}
5、写Dao
（1）、EmpDao
package cn.qiu.dao;
import cn.qiu.entity.Emp;
import org.apache.ibatis.annotations.Mapper;
import java.util.List;
@Mapper
public interface EmpDao {
public List<Emp> findAll();
}
（2）、AddEmpDao
package cn.qiu.dao;
import org.apache.ibatis.annotations.Mapper;
@Mapper
public interface AddEmpDao {
public void addEmp(String name,String sex,int age,String address);
}
（3）、DeleteEmpDao
package cn.qiu.dao;
import org.apache.ibatis.annotations.Mapper;
@Mapper
public interface DeleteEmpDao {
void deleteByName(String name);
}
6、写Mapper
（1）、AddEmpMapper
<?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.qiu.dao.EmpDao" > <select id="findAll" resultType="cn.qiu.entity.Emp"> select name,sec sex,agg age,addre address from Person; </select> </mapper>
（2）、AddEmpMapper
<?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.qiu.dao.AddEmpDao" >
<insert id="addEmp" >
insert into person values(#{0},#{1},#{2},#{3})
</insert>
</mapper>
（3）、DeleteEmpMapper
<?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.qiu.dao.DeleteEmpDao" >
<delete id="deleteByName" >
delete from person where name=#{name}
</delete>
</mapper>
四、新建数据库和表
CREATE TABLE `person` (
`name` varchar(10) DEFAULT NULL,
`sec` varchar(10) DEFAULT NULL,
`agg` int(10) DEFAULT NULL,
`addre` varchar(10) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
INSERT INTO `person` VALUES ('qiuuuu', 'm', '18', 'china');
INSERT INTO `person` VALUES ('chi', 'f', '18', 'china');
INSERT INTO `person` VALUES ('james', 'm', '30', 'usa');
INSERT INTO `person` VALUES ('kebi', 'm', '38', 'usa');
INSERT INTO `person` VALUES ('zhangsan', 'm', '10', 'china');
INSERT INTO `person` VALUES ('zhang', 'f', '35', 'china');
五、新建springboot配置文件application.yml
#设置Tomcat端口，默认8080 server.port=8081 #设置项目ContextPath #server.context-path=/ #设置Tomcat编码 server.tomcat.uri-encoding=UTF-8 #设置视图解析器路径 spring.mvc.view.prefix=/WEB-INF/JSP/ #设置视图解析器后缀 spring.mvc.view.suffix=.jsp #数据库配置 spring.datasource.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true spring.datasource.username=root spring.datasource.password=qiuhongchijuan12 spring.datasource.driver-class-name=com.mysql.jdbc.Driver #配置.xml文件路径（mapper文件位置） mybatis.mapper-locations=classpath:mapper/*.xml #配置模型路径(实体类的位置) mybatis.type-aliases-package=cn.qiu.entity
六、写静态页面
<!DOCTYPE html>
<html>
<head>
<title></title>
<script src="js/jquery-1.11.1.js"></script>
<script type="text/javascript">
$(function(){//页面加载完成就会执行此代码
setInterval(quoto,50000000000);//每隔5秒钟执行quoto函数
});
function quoto(){//该函数通过调用ajax对象（AMLHttpRequest）向服务器发送异步请求，服务器返回一个描述股票信息的字符串，通过解析json字符串，获得股票信息，然后更新表格
$.ajax({//利用jQuery提供的方法向服务器发送异步请求
"url":"aa",
"type":"post",
"dataType":"json",
"success":function(stocks){
//$.ajax会自动将json字符串转换成JavaScript对象
//清空tbody
$('#tb1').empty();
for(i=0;i<stocks.length;i++){
var s=stocks[i];
//更新表格
$('#tb1').append('<tr><td>'+s.name+'</td><td>'+s.sex+'</td><td>'+s.age+'</td><td>'+s.address+'</td></tr&g
5ae
t;');
}
}
});
}
</script>
<script type="text/javascript">
function loadXMLDoc()
{
var xmlhttp;
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById("myDiv").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","/ajax/demo_get.asp",true);
xmlhttp.send();
}
</script>
<style type="text/css">
table, tr, td
{
border:1px solid green;
}
td
{
background-color:green;
color:white;
}
</style>
</head>
<body>
<div>
<table>
<thead>
<tr>
<td>Name</td>
<td>Sex</td>
2230
<td>age</td>
<td>address</td>
</tr>
</thead>
<tbody id="tb1">
</tbody>
</table>
</div>
<div>
<input id="delete" onclcik="loadXMLDoc" type="button" value="delete">
</div>
<div id="myDiv">
</div>
</body>
</html>
七、测试
1、查询person表中所有数据
http://127.0.0.1:8081/html/a.html
2、删除表中名字为zhansan的信息
http://127.0.0.1:8081/addEmp?name=zhangsan
3、添加
http://127.0.0.1:8081/addEmp?name=zhang&&sex=f&&age=35&&address=china
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