本片文章主要是对ssm框架的整合(springMVC+spring+mybatis)
编程环境:IDEA
Maven
SSM整合可以使用多种方式,咱们会选择XML + 注解的方式
本文主要是对ssm整合的一个环境搭建,所以使用了MySQL创建了一张account表进行测试
create database ssm;
use ssm;
create table account(
id int primary key auto_increment,
name varchar(20),
money double );
未解决maven项目刚开始创建过慢问题,我们可以创建项目的时候增加如下键值对
archetypeCatalog
internal
项目创建成功,创建需要的目录文件
UTF-8
1.8
1.8
5.0.2.RELEASE
1.6.6
1.2.12
5.1.6
3.4.5
org.aspectj
aspectjweaver
1.6.8
org.springframework
spring-aop
${spring.version}
org.springframework
spring-context
${spring.version}
org.springframework
spring-web
${spring.version}
org.springframework
spring-webmvc
${spring.version}
org.springframework
spring-test
${spring.version}
org.springframework
spring-tx
${spring.version}
org.springframework
spring-jdbc
${spring.version}
junit
junit
4.12
compile
mysql
mysql-connector-java
${mysql.version}
javax.servlet
servlet-api
2.5
provided
javax.servlet.jsp
jsp-api
2.0
provided
jstl
jstl
1.2
log4j
log4j
${log4j.version}
org.slf4j
slf4j-api
${slf4j.version}
org.slf4j
slf4j-log4j12
${slf4j.version}
org.mybatis
mybatis
${mybatis.version}
org.mybatis
mybatis-spring
1.3.0
c3p0
c3p0
0.9.1.2
jar
compile
ssmZhengHe
maven-clean-plugin
3.1.0
maven-resources-plugin
3.0.2
maven-compiler-plugin
3.8.0
maven-surefire-plugin
2.22.1
maven-war-plugin
3.2.2
maven-install-plugin
2.5.2
maven-deploy-plugin
2.8.2
package zzu.domain;
import java.io.Serializable;
public class Account implements Serializable {
private Integer id;
private String name;
private Double money;
@Override
public String toString() {
return "Account{" +
"id=" + id +
", name='" + name + '\'' +
", money=" + money +
'}';
}
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 Double getMoney() {
return money;
}
public void setMoney(Double money) {
this.money = money;
}
}
package zzu.dao;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;
import zzu.domain.Account;
import java.util.List;
/**
* controllerDao层接口
*/
@Repository
public interface AccountDao {
//查找账户
public List<Account> findAll();
//保存账户信息
public void saveAccount(Account account);
}
package zzu.servlice;
import zzu.domain.Account;
import java.util.List;
public interface AccountService {
//查找账户
public List<Account> findAll();
//保存账户信息
public void saveAccount(Account account);
}
service实现类
package zzu.servlice.impl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import zzu.dao.AccountDao;
import zzu.domain.Account;
import zzu.servlice.AccountService;
import java.util.List;
public class AccountServiceImpl implements AccountService {
//查找所有的账户信息
public List<Account> findAll() {
System.out.println("这是service业务层的操作");
return null
}
//保存账户信息
public void saveAccount(Account account) {
}
}
配置完基本环境和建立好必要的domain包和dao包接口之后,我们先进行spring框架的搭建
在ssmZhengHe项目中创建applicationContext.xml的配置文件,编写具体的配置信息。
<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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
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
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<context:component-scan base-package="zzu">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
context:component-scan>
beans>
spring框架的配置文件编写完之后,我们首先对spring框架进行测试。检测一下spring的配置是否起作用。
编写测试类,看spring配置文件,使用Junit单元测试
public class testSpring {
@Test
public void test1(){
//加载配置文件
ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
//获取对象
AccountService as = (AccountService) ac.getBean("accountService");
as.findAll();
}
}
运行结果可以看到,spring配置正常加载
首先编写springMVC的配置文件,springmvc.xml
springmvc.xml
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc"
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/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<context:component-scan base-package="zzu">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
context:component-scan>
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/">property>
<property name="suffix" value=".jsp">property>
bean>
<mvc:resources location="/css/" mapping="/css/**"/>
<mvc:resources location="/images/" mapping="/images/**"/>
<mvc:resources location="/js/" mapping="/js/**"/>
<mvc:annotation-driven>mvc:annotation-driven>
beans>
web.xml文件中
<servlet>
<servlet-name>dispatcherServletservlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
<init-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:springmvc.xmlparam-value>
init-param>
<load-on-startup>1load-on-startup>
servlet>
<servlet-mapping>
<servlet-name>dispatcherServletservlet-name>
<url-pattern>/url-pattern>
servlet-mapping>
<filter>
<filter-name>characterEncodingFilterfilter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
<init-param>
<param-name>encodingparam-name>
<param-value>UTF-8param-value>
init-param>
filter>
<filter-mapping>
<filter-name>characterEncodingFilterfilter-name>
<url-pattern>/*url-pattern>
filter-mapping>
查询账户
package zzu.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import zzu.domain.Account;
import zzu.servlice.AccountService;
import java.util.List;
/**
* 账户web层
*/
@Controller
@RequestMapping("/account")
public class AccountController {
/**
* 查找所有的账户信息
*/
@RequestMapping("/findAll")
public String findAll(){
System.out.println("web层查询所有的账户信息执行了");
return "list";
}
}
spring整合springMVC框架的目的是,在controller层能调用service对象的方法,说明整合成功。
上面步骤测试的时候,我们用Junit测试加载过spring的配置文件,能正常加载,但是我们需要在项目启动的时候就去加载spring的配置文件,这样才能进行依赖注入
**
在项目启动的时候,就去加载applicationContext.xml的配置文件,在web.xml中配置 ContextLoaderListener监听器
(但是该监听器只能加载WEB-INF目录下的applicationContext.xml的配置文件,但是我们的配置文件放在了src下resources资源文件夹下,所以我们还需要配置配置文件的路径)。
**
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
listener>
<context-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:applicationContext.xmlparam-value>
context-param>
在controller中注入service对象,调用service对象的方法进行测试
controller层
/**
* 账户web层
*/
@Controller
@RequestMapping("/account")
public class AccountController {
@Autowired
private AccountService accountService;
/**
* 查找所有的账户信息
*/
@RequestMapping("/findAll")
public String findAll(){
System.out.println("web层查询所有的账户信息执行了");
accountService.findAll();
return "list";
}
}
运行结果,service层的findall方法能成功执行,所用对象注入成功
SqlMapConfig.xml
<configuration>
<environments default="mysql">
<environment id="mysql">
<transactionManager type="JDBC">transactionManager>
<dataSource type="POOLED">
<property name="driver" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/ssm"/>
<property name="username" value="root"/>
<property name="password" value="123456"/>
dataSource>
environment>
environments>
<mappers>
<package name="zzu.dao">package>
mappers>
configuration>
注意:我们使用代理 dao的方式来操作持久层,所以此处 Dao的实现类就是多余的了
编写完mybatis的配置文件,我们需要mybatis配置文件是否能正常加载
首先我们需要在持久层Dao层进行查询语句的编写
在AccountDao接口的方法上添加注解,编写SQL语句
AccountDao.java
package zzu.dao;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;
import zzu.domain.Account;
import java.util.List;
/**
* controllerDao层接口
*/
public interface AccountDao {
//查找账户
@Select("select * from account")
public List<Account> findAll();
//保存账户信息
@Insert("insert into account (name,money) values(#{name},#{money})")
public void saveAccount(Account account);
}
然后编写测试类,Junit测试
testMybatis.java
package zzu.test;
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 zzu.dao.AccountDao;
import zzu.domain.Account;
import java.io.InputStream;
import java.util.List;
public class TestMybatis {
/**
* 测试账户查询的功能
*/
@Test
public void run1() throws Exception {
InputStream in = Resources.getResourceAsStream("SqlMapConfig.xml");
SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(in);
SqlSession session= factory.openSession();
AccountDao dao = session.getMapper(AccountDao.class);
List<Account> list = dao.findAll();
System.out.println(list);
session.close();
in.close();
}
/**
* 添加账户信息
*/
@Test
public void run2() throws Exception {
//加载配置文件
InputStream in = Resources.getResourceAsStream("SqlMapConfig.xml");
//创建SqlSessionFactory对象
SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(in);
//创建sqlsession对象
SqlSession session= factory.openSession();
//获取AccountDao接口的代理对象
AccountDao dao = session.getMapper(AccountDao.class);
//添加数据
Account account = new Account();
account.setName("熊大");
account.setMoney(300d);
dao.saveAccount(account);
session.commit();
session.close();
in.close();
}
}
经过测试,程序能正常查询出数据库中account表中的信息,mybatis框架编写正确。下面就是把mybatis框架与spring框架进行整合。
spring框架与mybatis框架整合的目的就是把mybatis框架的配置文件sqlMapconfig.xml加载进spring配置文件applicationContext.xml文件中
添加过mybatis配置信息的spring配置文件applicationContext.xml完整文件如下:
<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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
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
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<context:component-scan base-package="zzu">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
context:component-scan>
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="com.mysql.jdbc.Driver"/>
<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/ssm"/>
<property name="user" value="root"/>
<property name="password" value="123456"/>
bean>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
bean>
<bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="zzu.dao"/>
bean>
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
bean>
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="find*" read-only="true"/>
<tx:method name="*" isolation="DEFAULT"/>
tx:attributes>
tx:advice>
<aop:config>
<aop:advisor advice-ref="txAdvice" pointcut="execution(* zzu.servlice.impl.*ServiceImpl.*(..))"/>
aop:config>
beans>
注意:把mybatis的配置信息添加进spring进行管理之后,mybatis的配置文件sqlMapConfig.xml配置文件中,sqlMapConfig.xml的配置文件就可以删除不用了。只需要用applicationContext.xml就可以了
** 在AccountDao接口中添加@Repository注解**
package zzu.dao;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;
import zzu.domain.Account;
import java.util.List;
/**
* controllerDao层接口
*/
@Repository
public interface AccountDao {
//查找账户
@Select("select * from account")
public List<Account> findAll();
//保存账户信息
@Insert("insert into account (name,money) values(#{name},#{money})")
public void saveAccount(Account account);
}
在AccountServiceImpl.java中
package zzu.servlice.impl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import zzu.dao.AccountDao;
import zzu.domain.Account;
import zzu.servlice.AccountService;
import java.util.List;
@Service("accountService")
public class AccountServiceImpl implements AccountService {
@Autowired
private AccountDao accountDao;
//查找所有的账户信息
public List<Account> findAll() {
System.out.println("这是service业务层的操作");
return accountDao.findAll();
}
//保存账户信息
public void saveAccount(Account account) {
accountDao.saveAccount(account);
}
}
在AccountControlle.java中
/**
* 账户web层
*/
@Controller
@RequestMapping("/account")
public class AccountController {
@Autowired
private AccountService accountService;
/**
* 查找所有的账户信息
*/
@RequestMapping("/findAll")
public String findAll(Model model){
System.out.println("web层查询所有的账户信息执行了");
List<Account> list = accountService.findAll();
model.addAttribute("list",list);
return "list";
}
}
把查询的结果,在返回的list.jsp页面进行展示
list.jsp页面
<%--
Created by IntelliJ IDEA.
User: Lei
Date: 2019/6/1
Time: 9:49
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
<title>Titletitle>
head>
<body>
<h1>查询出所有的账户信息h1>
<c:forEach items="${list}" var="account">
${account.name}
${account.money}<br>
c:forEach>
body>
html>
以上框架整合完毕,但是只是执行查询操作,如果想进行插入更新操作,还需要配置事务
在刚才applicationContext.xml文件中已经声明过,在这里重复声明:
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
bean>
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="find*" read-only="true"/>
<tx:method name="*" isolation="DEFAULT"/>
tx:attributes>
tx:advice>
<aop:config>
<aop:advisor advice-ref="txAdvice" pointcut="execution(* zzu.servlice.impl.*ServiceImpl.*(..))"/>
aop:config>
保存更新操作
index.jsp中
<a>测试保存操作a>
<form action="account/saveAccount">
姓名:<input type="text" name="name"><br>
密码:<input type="text" name="money"><br>
<input type="submit" value="保存" ><br>
form>
AccountController.java中
/**
* 保存账户信息
* @param account
* @param request
* @param response
* @throws IOException
*/
@RequestMapping("/saveAccount")
public void saveAccount(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException {
accountService.saveAccount(account);
response.sendRedirect(request.getContextPath()+"/account/findAll");
}
到此,经过测试,三个框架都能正常运行,框架整合完毕。