1、在idea中配置database 连接数据库，用来在idea中编写sql脚本操作数据库
2、sql详细脚本如下：
1 --1.创建部门表
2 create table dept
3 (
4 deptno int(2) unsigned primary key,
5 dname varchar(14),
6 loc varchar(13)
7 );
8
9 --2.添加部门数据
10 insert into dept(deptno,dname,loc) values
11 (10,'ACCOUNTING','NEW YORK'),
12 (20,'RESEARCH','DALLAS'),
13 (30,'SALES','CHICAGO'),
14 (40,'OPERATIONS','BOSTON');
15
16 --3.创建员工表
17 create table emp
18 (
19 empno int(4) unsigned primary key,
20 ename varchar(10),
21 job varchar(9),
22 mgr int(4),
23 hiredate date,
24 sal double(7,2),
25 comm double(7,2),
26 deptno int(2) references dept(deptno)
27 );
28
29 --4.插入数据员工数据
30 insert into emp(empno,ename,job,mgr,hiredate,sal,comm,deptno) values
31 (7369,'SMITH','CLERK',7902,'1980-12-17',800,null,20),
32 (7499,'ALLEN','SALESMAN',7698,'1981-02-20',1600,300,30),
33 (7521,'WARD','SALESMAN',7698,'1981-02-22',1250,500,30),
34 (7566,'JONES','MANAGER',7839,'1981-04-02',2975,null,20),
35 (7654,'MARTIN','SALESMAN',7698,'1981-09-28',1250,1400,30),
36 (7698,'BLAKE','MANAGER',7839,'1981-05-01',2850,null,30),
37 (7782,'BLAKE','MANAGER',7839,'1981-06-09',2450,null,10),
38 (7788,'SCOTT','ANALYST',7566,'1987-04-19',3000,null,20),
39 (7839,'KING','PRESIDENT',null,'1981-11-17',5000,null,10),
40 (7844,'TURNER','SALESMAN',7698,'1981-09-08',1500,0,30),
41 (7876,'ADAMS','CLERK',7788,'1987-05-23',1100,null,20),
42 (7900,'JAMES','CLERK',7698,'1981-12-03',950,null,30),
43 (7902,'FORD','ANALYST',7566,'1981-12-03',3000,null,20),
44 (7934,'MILLER','CLERK',7782,'1982-01-23',1300,null,10);
45
46
47 --3.员工福利表
48 create table bonus
49 (
50 ename varchar(10),
51 job varchar(9),
52 sal double(7,2),
53 comm double(7,2)
54 );
55
56 --4.工资等级表
57 create table salgrade
58 (
59 grade int(10),
60 losal double(7,2),
61 hisal double(7,2)
62 );
63
64 --5.插入工资等级信息
65 insert into salgrade(grade,losal,hisal) values
66 (1,700,1200),
67 (2,1201,1400),
68 (3,1401,2000),
69 (4,2001,3000),
70 (5,3001,9999);
scott-mysql.sql
3、创建项目，项目结构如下：
4、在pojo包下创建MainEntity.java实体类
1 package com.pojo;
2 /**
3 * 承接首页数据的持久化类
4 * 用来接受sql查询的结果
5 * 且将数据传输到首页显示
6 */
7 public class MainEntity {
8 //因为多方外键列的值和一方主键列的值是一样的，如果有需要则显示多方外键列字段，不写一方主键列
9 //先写多方字段
10 private Integer empno;
11 private String ename;
12 private String job;
13 private Double sal;
14 private Integer deptno;
15
16 private Double maxsal;
17 private Double minsal;
18 //再写一方字段
19 private String dname;
20
21 public MainEntity() {
22 }
23
24 public MainEntity(Integer empno, String ename, String job, Double sal, Integer deptno, String dname) {
25 this.empno = empno;
26 this.ename = ename;
27 this.job = job;
28 this.sal = sal;
29 this.deptno = deptno;
30 this.dname = dname;
31 }
32
33 public MainEntity(Integer empno, String ename, String job, Double sal, Integer deptno, String dname, Double minsal,Double maxsal) {
34 this.empno = empno;
35 this.ename = ename;
36 this.job = job;
37 this.sal = sal;
38 this.deptno = deptno;
39 this.maxsal = maxsal;
40 this.minsal = minsal;
41 this.dname = dname;
42 }
43
44 public Integer getEmpno() {
45 return empno;
46 }
47
48 public void setEmpno(Integer empno) {
49 this.empno = empno;
50 }
51
52 public String getEname() {
53 return ename;
54 }
55
56 public void setEname(String ename) {
57 this.ename = ename;
58 }
59
60 public String getJob() {
61 return job;
62 }
63
64 public void setJob(String job) {
65 this.job = job;
66 }
67
68 public Double getSal() {
69 return sal;
70 }
71
72 public void setSal(Double sal) {
73 this.sal = sal;
74 }
75
76 public Integer getDeptno() {
77 return deptno;
78 }
79
80 public void setDeptno(Integer deptno) {
81 this.deptno = deptno;
82 }
83
84 public String getDname() {
85 return dname;
86 }
87
88 public void setDname(String dname) {
89 this.dname = dname;
90 }
91
92 public Double getMaxsal() {
93 return maxsal;
94 }
95
96 public void setMaxsal(Double maxsal) {
97 this.maxsal = maxsal;
98 }
99
100 public Double getMinsal() {
101 return minsal;
102 }
103
104 public void setMinsal(Double minsal) {
105 this.minsal = minsal;
106 }
107
108 @Override
109 public String toString() {
110 return "MainEntity{" +
111 "empno=" + empno +
112 ", ename='" + ename + '\'' +
113 ", job='" + job + '\'' +
114 ", sal=" + sal +
115 ", deptno=" + deptno +
116 ", maxsal=" + maxsal +
117 ", minsal=" + minsal +
118 ", dname='" + dname + '\'' +
119 '}';
120 }
121
MainEntity.java
5、在mapper包下创建MainEntityMapper.java映射接口
1 package com.mapper;
2
3 import com.pojo.MainEntity;
4 import org.apache.ibatis.annotations.Delete;
5 import org.apache.ibatis.annotations.Insert;
6 import org.apache.ibatis.annotations.Select;
7 import org.apache.ibatis.annotations.Update;
8
9 import java.util.List;
10
11 public interface MainEntityMapper {
12 // mybatis注解的动态sql的要写在script标签内，且开始标签前不能有空格
13 @Select("<script>" +
14 " select" +
15 " d.dname," +
16 " e.empno,e.ename,e.job,e.sal,e.deptno" +
17 " FROM" +
18 " emp e, dept d" +
19 " where" +
20 " e.deptno=d.deptno" +
21 " <if test='empno!=null'> and e.empno=#{empno} </if>" +
22 " <if test='ename!=null'> and e.ename=#{ename} </if>" +
23 " <if test='job!=null'> and e.job=#{job} </if>" +
24 " <if test='deptno!=null'> and e.deptno=#{deptno} </if>" +
25 " <if test='minsal!=null and maxsal!=null'> " +
26 " and e.sal between #{minsal} and #{maxsal} " +
27 " </if>" +
28 "</script>")
29 public List<MainEntity> selectData(MainEntity mainEntity);
30
31
32 @Select("select d.dname,e.empno,e.ename,e.job,e.sal,e.deptno from emp e,dept d where e.deptno=d.deptno")
33 public List<MainEntity> selectMainData();
34
35 @Select("select d.dname,e.empno,e.ename,e.job,e.sal,e.deptno from emp e,dept d where e.deptno=d.deptno and e.empno=#{primarykey}")
36 public MainEntity selectByInfoData(Integer primarykey);
37
38 @Insert("insert into emp(empno,ename,job,sal,deptno) values(#{empno},#{ename},#{job},#{sal},#{deptno})")
39 public int insertData(MainEntity mainEntity);
40
41 @Update("update emp set ename=#{ename},job=#{job},sal=#{sal},deptno=#{deptno} where empno=#{empno}")
42 public int updateData(MainEntity mainEntity);
43
44 @Delete("delete from emp where empno=#{primarykey}")
45 public int deleteData(Integer primarykey);
46
47
MainEntityMapper.java
6、在service包下创建MainEntityService.java业务层接口
1 package com.service;
2
3 import com.pojo.MainEntity;
4 import org.apache.ibatis.annotations.Delete;
5 import org.apache.ibatis.annotations.Insert;
6 import org.apache.ibatis.annotations.Select;
7 import org.apache.ibatis.annotations.Update;
8
9 import java.util.List;
10
11 public interface MainEntityService {
12
13 public List<MainEntity> show(MainEntity mainEntity);
14
15 public int add(MainEntity mainEntity);
16
17 public int edit(MainEntity mainEntity);
18
19 public int del(Integer primarykey);
20
21
MainEntityService.java
7、在service包下创建MainEntityServiceImpl.java业务层接口实现类
1 package com.service;
2
3 import com.mapper.MainEntityMapper;
4 import com.pojo.MainEntity;
5
6 import java.util.List;
7
8 public class MainEntityServiceImpl implements MainEntityService {
9 private MainEntityMapper mapper;
10
11 public MainEntityMapper getMapper() {
12 return mapper;
13 }
14
15 public void setMapper(MainEntityMapper mapper) {
16 this.mapper = mapper;
17 }
18
19 @Override
20 public List<MainEntity> show(MainEntity mainEntity) {
21 return mapper.selectData(mainEntity);
22 }
23
24 @Override
25 public int add(MainEntity mainEntity) {
26 return mapper.insertData(mainEntity);
27 }
28
29 @Override
30 public int edit(MainEntity mainEntity) {
31 return mapper.updateData(mainEntity);
32 }
33
34 @Override
35 public int del(Integer primarykey) {
36 return mapper.deleteData(primarykey);
37 }
38
MainEntityServiceImpl .java
8、在resouces下创建日志记录文件log4j.properties文件
1 log4j.rootLogger=DEBUG, Console
2 #Console
3 log4j.appender.Console=org.apache.log4j.ConsoleAppender
4 log4j.appender.Console.layout=org.apache.log4j.PatternLayout
5 log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n
6
7 log4j.logger.org.apache=INFO
8 log4j.logger.java.sql.ResultSet=INFO
9 log4j.logger.java.sql.Connection=DEBUG
10 log4j.logger.java.sql.Statement=DEBUG
11
log4j.properties
9、在resouces下创建spring的applicationContext.xml文件
1 <?xml version="1.0" encoding="UTF-8"?>
2 <beans xmlns="http://www.springframework.org/schema/beans"
3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4 xmlns:aop="http://www.springframework.org/schema/aop"
5 xmlns:context="http://www.springframework.org/schema/context"
6 xmlns:tx="http://www.springframework.org/schema/tx"
7 xmlns:mvc="http://www.springframework.org/schema/mvc"
8 xsi:schemaLocation="http://www.springframework.org/schema/beans
9 http://www.springframework.org/schema/beans/spring-beans.xsd
10 http://www.springframework.org/schema/aop
11 http://www.springframework.org/schema/aop/spring-aop.xsd
12 http://www.springframework.org/schema/context
13 http://www.springframework.org/schema/context/spring-context.xsd
14 http://www.springframework.org/schema/tx
15 http://www.springframework.org/schema/tx/spring-tx.xsd
16 http://www.springframework.org/schema/mvc
17 http://www.springframework.org/schema/mvc/spring-mvc.xsd
18 ">
19 <!--1.驱动管理数据源-->
20 <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
21 <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
22 <property name="url" value="jdbc:mysql://localhost:3306/ar"/>
23 <property name="username" value="root"/>
24 <property name="password" value="123456"/>
25 </bean>
26 <!--2.数据源事务管理，注意id的必须是transactionManager-->
27 <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
28 <property name="dataSource" ref="dataSource"/>
29 </bean>
30 <!--3.事务注解驱动-->
31 <tx:annotation-driven transaction-manager="transactionManager"/>
32 <!--4.sqlsessionfactorybean-->
33 <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
34 <property name="dataSource" ref="dataSource"/>
35 <!--引用mybatis主配置文件的写法-->
36 <!--<property name="configLocation" value="mybatisConfig.xml"/>-->
37
38 <!--引用mybatis映射文件的写法-->
39 <!--<property name="mapperLocations" value="classpath:mapper/*.xml"/>-->
40
41 <!--配置某个包下的类全路径的别名-->
42 <!--<property name="typeAliasesPackage" value=""/>-->
43 </bean>
44
45
46 <!--5.SqlSessionTemplate-->
47 <!--采用构造注入-->
48 <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
49 <constructor-arg ref="sqlSessionFactory"/>
50 </bean>
51
52 <!--6.映射工厂bean，引用映射接口，底层代理会自动帮我们完成映射接口实现类的部分-->
53 <bean id="mainEntityMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
54 <property name="sqlSessionTemplate" ref="sqlSessionTemplate"/>
55 <property name="mapperInterface" value="com.mapper.MainEntityMapper"/>
56 </bean>
57
58 <!--7.业务层service的实现类的构建-->
59 <bean id="mainEntityService" class="com.service.MainEntityServiceImpl">
60 <property name="mapper" ref="mainEntityMapper"/>
61 </bean>
62 </beans>
applicationContext.xml
10、在test包下创建MvvmTest.java测试类
1 package com.test;
2
3 import com.pojo.MainEntity;
4 import com.service.MainEntityService;
5 import org.junit.Test;
6 import org.springframework.context.ApplicationContext;
7 import org.springframework.context.support.ClassPathXmlApplicationContext;
8
9 import java.util.List;
10
11 public class MvvmTest {
12 //加载spring的xml文件
13 ApplicationContext ac=new ClassPathXmlApplicationContext("applicationContext.xml");
14 //在spring的xml文件中获取service的bean
15 MainEntityService service=(MainEntityService)ac.getBean("mainEntityService");
16 // 测试查询所有
17 @Test
18 public void selectAll(){
19 List<MainEntity> list= service.show(new MainEntity());
20 for (MainEntity m:list) {
21 System.out.println(m);
22 }
23 }
24
25 @Test
26 public void selectData(){
27 MainEntity entity=new MainEntity();
28 // entity.setEmpno(7788);
29 // entity.setEname("SCOTT");
30 // entity.setJob("ANALYST");
31 // entity.setDeptno(10);
32 entity.setMinsal(800.00);
33 entity.setMaxsal(1300.00);
34
35 List<MainEntity> list= service.show(entity);
36 for (MainEntity m:list) {
37 System.out.println(m);
38 }
39 }
40
41
42
43 @Test
44 public void insertData(){
45 MainEntity entity=new MainEntity(1,"holly","教学",12.00,10,"xxx");
46 System.out.println(service.add(entity)>0?"add success":"add fail");
47 }
48 @Test
49 public void updateData(){
50 MainEntity entity=new MainEntity(1,"holly","教学",16.00,10,"xxx");
51 System.out.println(service.edit(entity)>0?"update success":"update fail");
52 }
53 @Test
54 public void deleteData(){
55 System.out.println(service.del(1)>0?"delete success":"delete fail");
56 }
57
58
59
MvvmTest .java
11、运行其中一个？
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