SSH整合(1)之准备工作

SSH整合(1)之准备工作

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导包

Struts2

导入 Struts2 zip 包解压目录下 apps/struts-blank.war 中所有 jar 包,如下:

asm-3.3.jar
asm-commons-3.3.jar
asm-tree-3.3.jar
commons-fileupload-1.4.jar
commons-io-2.2.jar
commons-lang3-3.2.jar
freemarker-2.3.28.jar
javassist-3.11.0.GA.jar
log4j-api-2.3.jar # 可选
log4j-core-2.3.jar # 可选
ognl-3.0.21.jar
struts2-core-2.3.37.jar
xwork-core-2.3.37.jar

另外导入 lib 中如下包:

struts2-convention-plugin-2.3.37.jar # Struts2 注解开发包
struts2-json-plugin-2.3.37.jar # Struts2 内置 Json 序列化支持包
struts2-spring-plugin-2.3.37.jar # Struts2 整合 Spring 包

Hibernate

首先是 Hibernate 开发的必须包,即 Hibernate zip 包 解压目录下 lib/required 下所有的包,如下:

antlr-2.7.7.jar
dom4j-1.6.1.jar
geronimo-jta_1.1_spec-1.1.1.jar
hibernate-commons-annotations-5.0.1.Final.jar
hibernate-core-5.0.7.Final.jar
hibernate-jpa-2.1-api-1.0.0.Final.jar
jandex-2.0.0.Final.jar
javassist-3.18.1-GA.jar
jboss-logging-3.3.0.Final.jar

Strut2 和 Hibernate 都引入了一个相同的 jar 包 javassisit,整合时必须只保留一个。

还需导入日志记录包(关注文章首部微信公众号发送 #55_log 获取):

log4j-1.2.16.jar
slf4j-api-1.6.1.jar
slf4j-log4j12-1.7.2.jar

如果使用这里的日志记录包,那么 Struts2 包中两个可选日志记录包就不需要引入。

如果 Hibernate 要使用 C3P0 连接池,还需引入 lib\optional\c3p0 下所有包,如下:

c3p0-0.9.2.1.jar
hibernate-c3p0-5.0.7.Final.jar
mchange-commons-java-0.2.3.4.jar

当然,使用 Hibernate 还需要数据库驱动包,这里我使用 MySQL 驱动包(关注文章首部微信公众号发送 #55_mysqlDriver 获取):

mysql-connector-java-5.1.7-bin.jar

Spring

使用 IoC 需引入的包:

com.springsource.org.apache.commons.logging-1.1.1.jar
com.springsource.org.apache.log4j-1.2.15.jar
spring-beans-4.2.4.RELEASE.jar
spring-context-4.2.4.RELEASE.jar
spring-core-4.2.4.RELEASE.jar
spring-expression-4.2.4.RELEASE.jar

使用 AOP 需引入的包:

com.springsource.org.aopalliance-1.0.0.jar
com.springsource.org.aspectj.weaver-1.6.8.RELEASE.jar
spring-aop-4.2.4.RELEASE.jar
spring-aspects-4.2.4.RELEASE.jar

使用 JDBC 模板需引入的包:

spring-jdbc-4.2.4.RELEASE.jar
spring-tx-4.2.4.RELEASE.jar

使用事务管理需引入的包:

spring-tx-4.2.4.RELEASE.jar

整合 web 项目需引入的包:

spring-web-4.2.4.RELEASE.jar

整合单元测试测试需引入的包:

spring-test-4.2.4.RELEASE.jar

整合 ORM 框架 Hibernate 需引入的包:

spring-orm-4.2.4.RELEASE.jar

关注文章首部微信公众号发送 #55_ssh_all 获取所有依赖 jar 包。

配置

Struts2

配置 Struts2 的核心过滤器:

<!-- WEB-INF/web.xml -->
<filter>
    <filter-name>struts2</filter-name>
    <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>struts2</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

引入 Struts2 核心配置文件:

<!-- struts.xml -->
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
        "http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
    <package name="test" extends="struts-default" namespace="/">

    </package>
</struts>

Hibernate

引入核心配置文件:

<!-- hibernate.cfg.xml -->
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <!-- 连接数据库的基本参数 -->
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.url">jdbc:mysql:///test</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.connection.password">root</property>
        <!-- 配置Hibernate的方言 -->
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
        <!-- 可选配置================ -->
        
        <!-- 打印SQL -->
        <property name="hibernate.show_sql">true</property>
        <!-- 格式化SQL -->
        <property name="hibernate.format_sql">true</property>
        <!-- 自动创建表 -->
        <property name="hibernate.hbm2ddl.auto">update</property>
        <!-- 配置C3P0连接池 -->
        <property name="connection.provider_class">org.hibernate.c3p0.internal.C3P0ConnectionProvider</property>
        <!--在连接池中可用的数据库连接的最少数目 -->
        <property name="c3p0.min_size">5</property>
        <!--在连接池中所有数据库连接的最大数目  -->
        <property name="c3p0.max_size">20</property>
        <!--设定数据库连接的过期时间,以秒为单位,
        如果连接池中的某个数据库连接处于空闲状态的时间超过了timeout时间,就会从连接池中清除 -->
        <property name="c3p0.timeout">120</property>
        <!--每3000秒检查所有连接池中的空闲连接 以秒为单位-->
        <property name="c3p0.idle_test_period">3000</property>
    </session-factory>
</hibernate-configuration>

Spring

配置 Spring 的核心监听器:

<!-- WEB-INF/web.xml -->
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--默认情况下 Spring 会查找路径为 WEB-INF/applicationContext.xml 的配置文件,通过如下配置,让 Spring 在 classpath 下查找-->
<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
</context-param>

引入核心配置文件:

<!-- 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: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">
    
    <!-- Spring整合Hibernate -->
    <!-- 引入Hibernate的配置的信息=============== -->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
        <!-- 引入hibernate的配置文件 -->
        <property name="configLocation" value="classpath:hibernate.cfg.xml"/>
    </bean>

    <!-- 配置事务管理器 -->
    <bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory"/>
    </bean>
    
    <!-- 开启注解事务 -->
    <tx:annotation-driven transaction-manager="transactionManager"/>
</beans>

Log4j 配置:

# log4j.properties
### direct log messages to stdout ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.err
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n

### direct messages to file mylog.log ###
log4j.appender.file=org.apache.log4j.FileAppender
log4j.appender.file.File=c\:mylog.log
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n

### set log levels - for more verbose logging change 'info' to 'debug' ###
# error warn info debug trace
log4j.rootLogger= info, stdout

示例代码
image.png

POJO

// com.zze.domain.User
package com.zze.domain;

public class User {
    private Integer id;
    private String name;
    private Integer age;

    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 getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", name='" + name + '\'' +
                '}';
    }
}

Dao

// com.zze.dao.UserDao
package com.zze.dao;

import com.zze.domain.User;

public interface UserDao {
    void save(User user);
}
// com.zze.dao.impl.UserDaoImpl
package com.zze.dao.impl;

import com.zze.dao.UserDao;
import com.zze.domain.User;

public class UserDaoImpl implements UserDao {
    @Override
    public void save(User user) {
    }
}

Service

// com.zze.service.UserService
package com.zze.service;

import com.zze.domain.User;

public interface UserService {
    void save(User user);
}
// com.zze.service.impl.UserServiceImpl
package com.zze.service.impl;

import com.zze.dao.UserDao;
import com.zze.domain.User;
import com.zze.service.UserService;

public class UserServiceImpl implements UserService {
    private UserDao userDao;

    public void setUserDao(UserDao userDao) {
        this.userDao = userDao;
    }

    @Override
    public void save(User user) {
        userDao.save(user);
    }
}

Web

// com.zze.web.action.UserAction
package com.zze.web.action;

import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
import com.zze.domain.User;
public class UserAction extends ActionSupport implements ModelDriven<User> {
    private User user = new User();

    @Override
    public User getModel() {
        return user;
    }
}

配置

<!-- 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: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">

    <bean name="userService" class="com.zze.service.impl.UserServiceImpl">
        <property name="userDao" ref="userDao"/>
    </bean>

    <bean name="userDao" class="com.zze.dao.impl.UserDaoImpl">
    </bean>
</beans>
<!-- struts.xml -->
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
        "http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
    <package name="test" extends="struts-default" namespace="/">
        <action name="customer_*" class="com.zze.web.action.UserAction" method="{1}">
        </action>
    </package>
</struts>

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