用Spring+Mybatis写一个数据库增删改查
总体结构
ClassBiz.java
package com.gxj.biz;
import java.util.List;
import com.gxj.model.Clazz;
public interface ClassBiz {
public boolean InsertClass(Clazz clazz);
public boolean DeleteClass(Integer id);
public boolean UpdateClass(Clazz clazz);
public List<Clazz> SelectClass();
}
ClassBizimplement.java
package com.gxj.biz;
import java.util.List;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import com.gxj.dao.ClassDao;
import com.gxj.model.Clazz;
@Service("classbiz")
public class ClassBizimplement implements ClassBiz {
@Resource
private ClassDao dao;
@Override
public boolean InsertClass(Clazz clazz) {
// TODO Auto-generated method stub
boolean flag = false;
int res = dao.InsertClass(clazz);
if(res>0) {
flag = true;
}
return flag;
}
@Override
public boolean DeleteClass(Integer id) {
// TODO Auto-generated method stub
boolean flag = false;
int res = dao.DeleteClass(id);
if(res>0) {
flag = true;
}
return flag;
}
@Override
public boolean UpdateClass(Clazz clazz) {
// TODO Auto-generated method stub
boolean flag = false;
int res = dao.UpdateClass(clazz);
if(res>0) {
flag = true;
}
return flag;
}
@Override
public List<Clazz> SelectClass() {
// TODO Auto-generated method stub
List<Clazz> list = dao.SelectClass();
return list;
}
}
ClassDao.java
package com.gxj.dao;
import java.util.List;
import com.gxj.model.Clazz;
public interface ClassDao {
public int InsertClass(Clazz clazz);
public int DeleteClass(Integer id);
public int UpdateClass(Clazz clazz);
public List<Clazz> SelectClass();
}
ClassDaoimplement.java
package com.gxj.dao;
import java.util.List;
import javax.annotation.Resource;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;
import com.gxj.model.ClassRowMapper;
import com.gxj.model.Clazz;
@Repository
public class ClassDaoimplement implements ClassDao {
@Resource
private JdbcTemplate jt;
@Override
public int InsertClass(Clazz clazz) {
// TODO Auto-generated method stub
String sql = "insert into class(name,size) value(?,?)";
int res = jt.update(sql,new Object[] {clazz.getName(),clazz.getSize()});
return res;
}
@Override
public int DeleteClass(Integer id) {
// TODO Auto-generated method stub
String sql = "delete from class where id=?";
int res = jt.update(sql,new Object[] {id});
return res;
}
@Override
public int UpdateClass(Clazz clazz) {
// TODO Auto-generated method stub
String sql = "update class set name=?,size=? where id=?";
int res = jt.update(sql, new Object[] {clazz.getName(),clazz.getSize(),clazz.getId()});
return res;
}
@Override
public List<Clazz> SelectClass() {
// TODO Auto-generated method stub
String sql = "select * from class";
List<Clazz> list = jt.query(sql,new ClassRowMapper());
return list;
}
}
DeleteClass.java
package com.gxj.main;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.gxj.biz.ClassBiz;
public class DeleteClass {
public static void main(String[] args) {
// TODO Auto-generated method stub
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");
ClassBiz biz = (ClassBiz) context.getBean("classbiz");
boolean flag = biz.DeleteClass(21);
System.out.println(flag);
}
}
InsertClass.java
package com.gxj.main;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.gxj.biz.ClassBiz;
import com.gxj.model.Clazz;
public class InsertClass {
public static void main(String[] args) {
// TODO Auto-generated method stub
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");
ClassBiz biz = (ClassBiz) context.getBean("classbiz");
Clazz clazz = new Clazz();
clazz.setName("ts17061");
clazz.setSize(20);
boolean flag = biz.InsertClass(clazz);
System.out.println(flag);
}
}
SelectClass.java
package com.gxj.main;
import java.util.List;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.gxj.biz.ClassBiz;
import com.gxj.model.Clazz;
public class SelectClass {
public static void main(String[] args) {
// TODO Auto-generated method stub
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");
ClassBiz biz = (ClassBiz) context.getBean("classbiz");
List<Clazz> list = biz.SelectClass();
for(Clazz p:list) {
System.out.println(p.getId());
System.out.println(p.getName());
System.out.println(p.getSize());
}
}
}
UpdateClass.java
package com.gxj.main;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.gxj.biz.ClassBiz;
import com.gxj.model.Clazz;
public class UpdateClass {
public static void main(String[] args) {
// TODO Auto-generated method stub
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");
ClassBiz biz = (ClassBiz) context.getBean("classbiz");
Clazz clazz = new Clazz();
clazz.setId(20);
clazz.setName("ts17066");
clazz.setSize(55);
boolean flag = biz.UpdateClass(clazz);
System.out.println(flag);
}
}
ClassRowMapper.java
package com.gxj.model;
import java.sql.ResultSet;
import java.sql.SQLException;
import org.springframework.jdbc.core.RowMapper;
public class ClassRowMapper implements RowMapper<Clazz> {
@Override
public Clazz mapRow(ResultSet arg0, int arg1) throws SQLException {
// TODO Auto-generated method stub
Clazz clazz = new Clazz();
clazz.setId(arg0.getInt(1));
clazz.setName(arg0.getString(2));
clazz.setSize(arg0.getInt(3));
return clazz;
}
}
Clazz.java
package com.gxj.model;
public class Clazz {
private Integer id;
private String name;
private Integer size;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getSize() {
return size;
}
public void setSize(Integer size) {
this.size = size;
}
}
Clazz.xml
<?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="com.gxj.dao.ClassDao">
<select id="SelectClass" resultType="Clazz">
select * from class
</select>
<insert id="InsertClass" parameterType="Clazz">
insert into class(name,size) value(#{name},#{size})
</insert>
<delete id="DeleteClass" parameterType="int">
delete from class where id=#{id}
</delete>
<update id="UpdateClass" parameterType="Clazz">
update class set name=#{name},size=#{size} where id=#{id}
</update>
</mapper>
config.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<typeAliases>
<typeAlias type="com.gxj.model.Clazz" alias="Clazz"/>
</typeAliases>
<mappers>
<mapper resource="com/gxj/model/Clazz.xml"></mapper>
</mappers>
</configuration>
spring.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
<context:annotation-config/> <!-- 开启自动扫描功能 -->
<context:component-scan base-package="com.gxj.dao"></context:component-scan>
<context:component-scan base-package="com.gxj.biz"></context:component-scan>
<bean id="ds" class="org.apache.commons.dbcp.BasicDataSource">
<property name="username">
<value>root</value>//数据库的用户名
</property>
<property name="password">
<value>123456</value>//数据库的密码
</property>
<property name="url">
<value>jdbc:mysql://localhost:3306/itcast</value>//itcast是数据库名
</property>
<property name="driverClassName">
<value>com.mysql.jdbc.Driver</value>
</property>
</bean>
<bean id="jdbctemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource">
<ref bean="ds"/>
</property>
</bean>
</beans>
pom.xml
<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>com.gxj</groupId>
<artifactId>ts170607</artifactId>
<version>0.0.1-SNAPSHOT</version>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring.version>5.0.6.RELEASE</spring.version>
<jackson.version>2.5.0</jackson.version>
</properties>
<dependencies>
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!-- spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.0.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
<scope>test</scope>
</dependency>
<!-- mybatis 包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.2.8</version>
</dependency>
<!--mybatis spring 插件 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.2</version>
</dependency>
<!-- mysql连接 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<!-- 数据源 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.12</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.4</version>
</dependency>
<!-- log4j -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!-- servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>3.0-alpha-1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- json -->
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.13</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.3</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.9.4</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.9.4</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.4</version>
</dependency>
<!-- 文件上传 -->
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.2.2</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>com.springsource.org.codehaus.jackson.mapper</artifactId>
<version>1.4.3</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>com.springsource.org.codehaus.jackson</artifactId>
<version>1.4.3</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
也同样需要些数据库中表