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.logger.java.sql.PreparedStatement=DEBUG
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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