SSM整合【增删改查】

1.今天我们来温习一下基于spring+springMvc+Mybatis+前端框架Bootstrap的项目增删改查；

2.首先，我们整合Mybatis

先下载插件在pom.xml中

  org.mybatis
  mybatis
  3.4.5



  mysql
  mysql-connector-java
  5.1.43

  com.mchange
  c3p0
  0.9.5.1

然后再中配置

  Ssmmybatis（#这是项目名）
  
    
      src/main/java
      
        **/*.xml
      
    
  

然后写Person.class实体类

public class person{

private int pid;

private String pname;

private String page;

public Person(int pid, String pname, String page) {
    this.pid = pid;
    this.pname = pname;
    this.page = page;
}

public Person() {
}

@Override
public String toString() {
    return "Person{" +
            "pid=" + pid +
            ", pname='" + pname + '\'' +
            ", page='" + page + '\'' +
            '}';
}

public int getPid() {
    return pid;
}

public void setPid(int pid) {
    this.pid = pid;
}

public String getPname() {
    return pname;
}

public void setPname(String pname) {
    this.pname = pname;
}

public String getPage() {
    return page;
}

public void setPage(String page) {
    this.page = page;
}

}

如下是personDao

public interface personDao{

public Person getPersonById(int pid);
public List getPersons();
public void deletePersonById(int pid);
public void updateperson(Person person);
public void addperson(Person person);

}

接下来就是Person.xml

xml version="1.0" encoding="UTF-8" ?>
mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

select * from person where pid=#{pid}

select * from person

delete  from  person  where pid=#{pid}

update person set pname=#{pid},page=#{page} where pid=#{pid}

insert  into person(pname,page) values(#{pname},#{page})

接下来写resources下的配置文件mybatis-config.xml，

        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">

 

最后，在目录src下写个测试类测试一下，如下：

package com.zking.test;

import com.zking.dao.PersonDao;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Test;

import java.io.IOException;

public class SsmTest {

public void test1(){

try {

SqlSessionFactory sqlsessionfactory=new SqlSessionFactoryBuilder().bulid(Resources.getResourceAsStream("mybatis-config.xml"))

    SqlSession sqlSession = sqlSessionFactory.openSession();
        PersonDao personDao=sqlSession.getMapper(PersonDao.class);

      /*  personDao.deletePersonById(17);*/
        System.out.println(personDao.getPersons().size());


        sqlSession.commit();
        sqlSession.close();


    } catch (IOException e) {
        e.printStackTrace();
    }
}

}

}

测试一下Mybatis,测试成功，则开始配置spring，再配置springMVC;

这时pom.xml里又要添加插件了,

  org.springframework
  spring-webmvc
  4.3.3.RELEASE

  org.springframework
  spring-jdbc
  4.3.10.RELEASE

  org.mybatis
  mybatis-spring
  1.3.1

然后再resource目录下，新建一个applicationContext.xml文件

xml version="1.0" encoding="UTF-8"?>
xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
                        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

context：property-placeholder>

   
   
   
   
   

id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    name="dataSource" ref="dataSource">
    name="configLocation" value="classpath:mybatis-config.xml">
    name="mapperLocations" value="classpath:com/zking/entity/*.xml">


    id="personDao" class="org.mybatis.spring.mapper.MapperFactoryBean">
        name="sqlSessionFactory" ref="sqlSessionFactory">
        name="mapperInterface" value="com.zking.dao.PersonDao">
    

接下来是数据库文件

db.properties

uname=root
upass=root
url=jdbc:mysql://localhost:3306/mysql
driver_Class=com.mysql.jdbc.Driver

initPoolSize=5
maxPoolSize=20

然后在新建一个测试类

TestSpring

package com.zking.test;

import com.zking.dao.PersonDao;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestSpring {


     @Test
    public  void  test(){

         ApplicationContext applicationContext=new ClassPathXmlApplicationContext("applicaionContext.xml");
        PersonDao personDao= (PersonDao) applicationContext.getBean("PersonDao");
         System.out.println(personDao.getPersons().size());

     }
}

最后配置springMVC.xml