SSM框架整合

1、导入项目所需jar包

共27个

2、编写配置文件

1）Web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaeehttp://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
    id="WebApp_ID" version="3.1">
<!-- spring配置 begin -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring/applicationContext*.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!-- spring配置 end -->
    
    <!-- springmvc配置 begin -->
    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring/springmvc.xml</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <!-- springmvc配置 end -->

    <!-- post方式提交乱码解决 begin -->
    <filter>
        <filter-name>characterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>utf-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <!-- post方式提交乱码解决 end -->

2）Spring的配置文件

applicationContext.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:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.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
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">

    <!-- 自动扫描和装配 -->
    <context:component-scan base-package="com.yxxy"></context:component-scan>
</beans>

applicationContext-trans.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:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.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
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">

    <!-- 声明式事务管理 -->
    <!-- 事务管理器 -->
    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!-- 配置事务通知 -->
    <tx:advice id="txAdvice" transaction-manager="txManager">
        <tx:attributes>
            <!-- 配置哪些方法使用什么样的事务，配置事务的传播特性 -->
             <tx:method name="add*" propagation="REQUIRED"/>
             <tx:method name="get*" read-only="true"/>
             <tx:method name="select*" read-only="true"/>
             <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>
    <!-- 配置aop -->
    <!-- <aop:config>
        <aop:pointcut expression="execution(* com.yxxy.service.impl.*.*(..))" id="pointcut"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pointcut"/>
    </aop:config> -->
    <tx:annotation-driven transaction-manager="txManager"/>
    <aop:aspectj-autoproxy/>
</beans>

applicationContext-mybatis.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:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.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
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">

    <!-- 加载properties配置文件 -->
    <context:property-placeholder location="classpath:jdbc.properties"/>
    <!-- 配置数据源 -->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="${jdbc_driverClassName}"></property>
        <property name="url" value="${jdbc_url}"></property>
        <property name="username" value="${jdbc_username}"></property>
        <property name="password" value="${jdbc_password}"></property>
    </bean>
    <!-- 配置SqlSessionFactory -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="configLocation" value="classpath:mybatis/mybatis.cfg.xml"></property>
    </bean>
    <!-- 配置自动扫描mybatis Mapper.java Mapper.xml -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.yxxy.mapper"></property>
        <!-- sqlSessionFactoryBeanName使用value，而不是ref -->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
    </bean>
</beans>

3）Springmvc的配置文件springmvc.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:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.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
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">

    <!-- 扫描该包下注解 -->
    <context:component-scan base-package="com.yxxy.controller"></context:component-scan>
</beans>

4）Mybatis的配置文件 mybatis.cfg.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>
</configuratio

3、连接池配置druid

applicationContext-mybatis.xml

    <!-- 阿里druid连接池配置 -->
        <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <!-- 数据库基本信息配置 -->
        <!-- 使用Druid无需配置driver，会自动根据url得到driver -->
        <property name="url" value="${jdbc_url}" />
        <property name="username" value="${jdbc_username}" />
        <property name="password" value="${jdbc_password}" />
        <property name="filters" value="${filters}" />
        <!-- 最大并发连接数 -->
        <property name="maxActive" value="${maxActive}" />
        <!-- 初始化连接数量 -->
        <property name="initialSize" value="${initialSize}" />
        <!-- 配置获取连接等待超时的时间 -->
        <property name="maxWait" value="${maxWait}" />
        <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
        <property name="timeBetweenEvictionRunsMillis" value="${timeBetweenEvictionRunsMillis}" />
        <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
        <property name="minEvictableIdleTimeMillis" value="${minEvictableIdleTimeMillis}" />
        <property name="validationQuery" value="${validationQuery}" />
        <property name="testWhileIdle" value="${testWhileIdle}" />
        <property name="testOnBorrow" value="${testOnBorrow}" />
        <property name="testOnReturn" value="${testOnReturn}" />
        <property name="poolPreparedStatements" value="${poolPreparedStatements}" />
        <property name="maxPoolPreparedStatementPerConnectionSize" value="${maxPoolPreparedStatementPerConnectionSize}" />
    </bean>

jdbc.properties

#mysql数据库链接
jdbc_driverClassName=com.mysql.jdbc.Driver
jdbc_url=jdbc:mysql://localhost:3306/mybatis
jdbc_username=root
jdbc_password=root
#初始化时建立物理连接的个数。初始化发生在显示调用init方法，或者第一次getConnection时   
initialSize =1  
#定义最大连接池数量    
maxActive=20  
#获取连接时最大等待时间，单位毫秒。配置了maxWait之后，缺省启用公平锁，并发效率会有所下降，如果需要可以通过配置useUnfairLock属性为true使用非公平锁。  
maxWait=60000  
#是否缓存preparedStatement，也就是PSCache。PSCache对支持游标的数据库性能提升巨大，比如说oracle。  
#在mysql5.5以下的版本中没有PSCache功能，建议关闭掉。5.5及以上版本有PSCache，建议开启。   
poolPreparedStatements=false  
#要启用PSCache，必须配置大于0，当大于0时，poolPreparedStatements自动触发修改为true。  
#在Druid中，不会存在Oracle下PSCache占用内存过多的问题，可以把这个数值配置大一些，比如说100  
maxPoolPreparedStatementPerConnectionSize=100  
#用来检测连接是否有效的sql，要求是一个查询语句。如果validationQuery为null，testOnBorrow、testOnReturn、testWhileIdle都不会其作用。   
validationQuery=SELECT 'x'  
#申请连接时执行validationQuery检测连接是否有效，做了这个配置会降低性能。   
testOnBorrow=false  
#归还连接时执行validationQuery检测连接是否有效，做了这个配置会降低性能。  
testOnReturn=false  
#建议配置为true，不影响性能，并且保证安全性。申请连接的时候检测，如果空闲时间大于timeBetweenEvictionRunsMillis，执行validationQuery检测连接是否有效。   
testWhileIdle=true  
#属性类型是字符串，通过别名的方式配置扩展插件，常用的插件有：监控统计用的filter:stat;日志用的filter:log4j;防御sql注入的filter:wall   
filters=stat,wall  
#有两个含义：1) Destroy线程会检测连接的间隔时间;2) testWhileIdle的判断依据，详细看testWhileIdle属性的说明   
timeBetweenEvictionRunsMillis=3000  
#配置一个连接在池中最小生存的时间，单位是毫秒  
minEvictableIdleTimeMillis=300000

4、src

1）实体 User.java

package com.yxxy.pojo;

import java.io.Serializable;

public class User implements Serializable {
    
    private Integer id;
    private String name;
    private String pwd;
    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 String getPwd() {
        return pwd;
    }
    public void setPwd(String pwd) {
        this.pwd = pwd;
    }
    @Override
    public String toString() {
        return "User [id=" + id + ", name=" + name + ", pwd=" + pwd + "]";
    }
}

2）mapper

UserMapper.java

package com.yxxy.mapper;

import java.util.List;

import org.apache.ibatis.annotations.Select;

import com.yxxy.pojo.User;

public interface UserMapper {
    
    List<User> selectList();
    
}

UserMapper.xml

注意：当mapper是接口的时候， namespace有了约束，必须是mapper所在的包名.类名，id的selectList必须和mapper里面的方法名一致

<?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.yxxy.mapper.UserMapper">
    <select id="selectList" resultType="com.yxxy.pojo.User">
        select * from user
    </select>
</mapper>

3）service

UserServiceI.java

package com.yxxy.service;

import java.util.List;

import com.yxxy.pojo.User;

public interface UserServiceI {

    List<User> selectList();
    
}

UserServiceImpl.java

package com.yxxy.service.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.yxxy.mapper.UserMapper;
import com.yxxy.pojo.User;
import com.yxxy.service.UserServiceI;

@Service
@Transactional
public class UserServiceImpl implements UserServiceI {
    
    @Autowired
    private UserMapper userMapper;

    @Override
    public List<User> selectList() {
        return userMapper.selectList();
    }
    
}

4）controller（UserController.java）

package com.yxxy.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 com.yxxy.service.UserServiceI;

@Controller
@RequestMapping("/user")
public class UserController {
    
    @Autowired
    private UserServiceI userService;
    
    @RequestMapping("/list")
    public String list(Model model) {
        model.addAttribute("list", userService.selectList());
        return "/list.jsp";
    }
    
}

posted @ 2018-07-08 16:26 莯汐阅读(105) 评论(0) 收藏举报

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莯汐

SSM框架整合

1、 导入项目所需jar包

2、 编写配置文件

1）Web.xml

2）Spring的配置文件

applicationContext-trans.xml

applicationContext-mybatis.xml

3）Springmvc的配置文件springmvc.xml

4）Mybatis的配置文件 mybatis.cfg.xml

3、连接池配置druid

4、src

1）实体 User.java

2）mapper

UserMapper.java

UserMapper.xml

3）service

UserServiceI.java

UserServiceImpl.java

4）controller（UserController.java）

公告

1、导入项目所需jar包

2、编写配置文件