Spring5
2018-08-10 本文已影响0人
虫儿飞ZLEI
layout: post
title: spring5
subtitle: SSH整合
date: 2018-06-17
author: ZL
header-img: img/20180617.jpg
catalog: true
tags:
- spring
- SSH
整合理论
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导包（41个）
hibernate
- hibernate/lib/required
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- hibernate/lib/jpa | java persist api java的持久化规范(接口)
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- 数据库驱动
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struts2
- struts-blank.war/WEB-INF/lib/*
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注意:javassist-3.18.1-GA.jar包与hibernate中的重复 - struts整合spring插件包
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注意:这个包一旦导入,那么struts2在启动时就会寻找spring容器.找不到将会抛出异常，单独使用struts2不需要导
Spring
- 基本:4+2
core|beans|context|expression|logging|log4j - 整合web:web包
spring-web - 整合aop:4个
spring-aop|spring-aspect|aop联盟|aopweaving - 整合Hibernate和事务:4个
spring-jdbc|spring-tx|c3p0|spring-orm - 正junit4测试:test包
spring-test
标签库
- standard.jar
- jstl-1.2.jar
全家福
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整合ssh
单独配置Spring容器到web项目
applicationContext.xml
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://www.springframework.org/schema/beans"
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-4.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd ">
</beans>
web.xml
<!-- 让spring随web启动而创建的监听器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 配置spring配置文件位置参数 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
单独配置struts2到web项目
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>
</struts>
web.xml
<!-- struts2核心过滤器 -->
<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>
整合struts2和Spring
配置常量(struts.xml)
<!--
struts.objectFactory = spring 将action的创建交给spring容器
struts.objectFactory.spring.autoWire = name spring负责装配Action依赖属性
(默认是打开的，不用配置)
-->
<constant name="struts.objectFactory" value="spring"></constant>
情境需求
struts2里面有很多的action，在action里面需要用到service对象，这个对象由Spring创建。
整合方式一（不推荐）
struts.xml
<!-- 整合方案1:class属性上仍然配置action的完整类名
struts2仍然创建action,由spring负责组装Action中的依赖属性
-->
<package name="crm" namespace="/" extends="struts-default">
<action name="UserAction_*" class="zl.action.UserAction" method="{1}">
<result name="success">/success.jsp</result>
</action>
</package>
applicationContext.xml
<bean name="userService" class="zl.service.impl.UserServiceImpl"></bean>
UserAction代码
public class UserAction extends ActionSupport{
private UserService userService;
public String login() throws Exception {
System.out.println(userService);
return super.execute();
}
public void setUserService(UserService userService) {
this.userService = userService;
}
}
整合方式二
struts.xml
<!--
整合方案2:class属性上填写spring中action对象的BeanName
完全由spring管理action生命周期,包括Action的创建
注意:需要手动组装依赖属性
-->
<package name="crm" namespace="/" extends="struts-default">
<action name="UserAction_*" class="userAction" method="{1}">
<result name="success">/success.jsp</result>
</action>
</package>
applicationContext.xml
<bean name="userAction" class="zl.action.UserAction" scope="prototype">
<property name="userService" ref="userService"></property>
</bean>
<bean name="userService" class="zl.service.impl.UserServiceImpl"></bean>
UserAction代码
public class UserAction extends ActionSupport{
private UserService userService;
public String login() throws Exception {
System.out.println(userService);
return super.execute();
}
public void setUserService(UserService userService) {
this.userService = userService;
}
}
单独配置hibernate
导入实体类&orm元数据
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比如：
User.java：
package zl.domain;
import java.util.HashSet;
import java.util.Set;
public class User {
/*
* CREATE TABLE `sys_user` (
`user_id` bigint(32) NOT NULL AUTO_INCREMENT COMMENT '用户id',
`user_code` varchar(32) NOT NULL COMMENT '用户账号',
`user_name` varchar(64) NOT NULL COMMENT '用户名称',
`user_password` varchar(32) NOT NULL COMMENT '用户密码',
`user_state` char(1) NOT NULL COMMENT '1:正常,0:暂停',
PRIMARY KEY (`user_id`)
) ENGINE=InnoDB AUTO_INCREMENT=9 DEFAULT CHARSET=utf8;
*/
private Long user_id;
private String user_code;
private String user_name;
private String user_password;
private Character user_state;
public Long getUser_id() {
return user_id;
}
public void setUser_id(Long user_id) {
this.user_id = user_id;
}
public String getUser_code() {
return user_code;
}
public void setUser_code(String user_code) {
this.user_code = user_code;
}
public String getUser_name() {
return user_name;
}
public void setUser_name(String user_name) {
this.user_name = user_name;
}
public String getUser_password() {
return user_password;
}
public void setUser_password(String user_password) {
this.user_password = user_password;
}
public Character getUser_state() {
return user_state;
}
public void setUser_state(Character user_state) {
this.user_state = user_state;
}
@Override
public String toString() {
return "User [user_id=" + user_id + ", user_code=" + user_code + ", user_name=" + user_name + ", user_password="
+ user_password + "]";
}
}
User.hbm.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="zl.domain" >
<class name="User" table="sys_user" >
<id name="user_id" >
<generator class="native"></generator>
</id>
<property name="user_code" ></property>
<property name="user_name" ></property>
<property name="user_password" ></property>
<property name="user_state" ></property>
</class>
</hibernate-mapping>
配置主配置文件
<?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>
<!--
#hibernate.dialect org.hibernate.dialect.MySQLDialect
#hibernate.dialect org.hibernate.dialect.MySQLInnoDBDialect
#hibernate.dialect org.hibernate.dialect.MySQLMyISAMDialect
#hibernate.connection.driver_class com.mysql.jdbc.Driver
#hibernate.connection.url jdbc:mysql:///test
#hibernate.connection.username gavin
#hibernate.connection.password
-->
<!-- 数据库驱动 -->
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<!-- 数据库url -->
<property name="hibernate.connection.url">jdbc:mysql:///test01</property>
<!-- 数据库连接用户名 -->
<property name="hibernate.connection.username">root</property>
<!-- 数据库连接密码 -->
<property name="hibernate.connection.password">123456</property>
<!-- 数据库方言
不同的数据库中,sql语法略有区别. 指定方言可以让hibernate框架在生成sql语句时.针对数据库的方言生成.
sql99标准: DDL 定义语言 库表的增删改查
DCL 控制语言 事务 权限
DML 操纵语言 增删改查
注意: MYSQL在选择方言时,请选择最短的方言.
-->
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<!-- #hibernate.show_sql true
#hibernate.format_sql true
-->
<!-- 将hibernate生成的sql语句打印到控制台 -->
<property name="hibernate.show_sql">true</property>
<!-- 将hibernate生成的sql语句格式化(语法缩进) -->
<property name="hibernate.format_sql">true</property>
<!--
## auto schema export 自动导出表结构. 自动建表
#hibernate.hbm2ddl.auto create 自动建表.每次框架运行都会创建新的表.以前表将会被覆盖,表数据会丢失.(开发环境中测试使用)
#hibernate.hbm2ddl.auto create-drop 自动建表.每次框架运行结束都会将所有表删除.(开发环境中测试使用)
#hibernate.hbm2ddl.auto update(推荐使用) 自动生成表.如果已经存在不会再生成.如果表有变动.自动更新表(不会删除任何数据).
#hibernate.hbm2ddl.auto validate 校验.不自动生成表.每次启动会校验数据库中表是否正确.校验失败.
-->
<property name="hibernate.hbm2ddl.auto">update</property>
<mapping resource="zl/domain/Customer.hbm.xml" />
<mapping resource="zl/domain/LinkMan.hbm.xml" />
<mapping resource="zl/domain/User.hbm.xml" />
</session-factory>
</hibernate-configuration>
测试插入一条数据
@Test
public void fun1() {
Configuration configuration = new Configuration().configure();
SessionFactory sessionFactory = configuration.buildSessionFactory();
Session session = sessionFactory.openSession();
Transaction transaction = session.beginTransaction();
User u = new User();
u.setUser_name("tttt");
u.setUser_password("1234");
session.save(u);
transaction.commit();
session.close();
sessionFactory.close();
}
整合hibernate和Spring
整合需求
将sessionFactory对象交给spring容器管理
方案一
applicationContextxml
<!-- 加载配置方案1:仍然使用外部的hibernate.cfg.xml配置信息 -->
<bean name="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
<property name="configLocation" value="classpath:hibernate.cfg.xml" ></property>
</bean>
方案二
applicationContextxml
<!-- 加载配置方案2:在spring配置中放置hibernate配置信息 -->
<bean name="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean" >
<!-- 配置hibernate基本信息 -->
<property name="hibernateProperties">
<props>
<!-- 必选配置 -->
<prop key="hibernate.connection.driver_class" >com.mysql.jdbc.Driver</prop>
<prop key="hibernate.connection.url" >jdbc:mysql:///test01</prop>
<prop key="hibernate.connection.username" >root</prop>
<prop key="hibernate.connection.password" >123456</prop>
<prop key="hibernate.dialect" >org.hibernate.dialect.MySQLDialect</prop>
<!-- 可选配置 -->
<prop key="hibernate.show_sql" >true</prop>
<prop key="hibernate.format_sql" >true</prop>
<prop key="hibernate.hbm2ddl.auto" >update</prop>
</props>
</property>
<!-- 引入orm元数据,指定orm元数据所在的包路径,spring会自动读取包中的所有配置 -->
<property name="mappingDirectoryLocations" value="classpath:zl/domain" ></property>
<!--或者不使用mappingDirectoryLocations，使用mappingLocations，在使用maven的时候，后者更好。-->
<!-- 注入hibernate的映射文件 -->
<property name="mappingLocations">
<list>
<value>classpath:com/itheima/bos/domain/*.xml</value>
</list>
</property>
</bean>
代码测试
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
public class hibernateTest {
@Resource(name = "sessionFactory")
private SessionFactory sessionFactory;
@Test
public void fun2() {
Session session = sessionFactory.openSession();
Transaction transaction = session.beginTransaction();
User u = new User();
u.setUser_name("oooo");
u.setUser_password("2222");
session.save(u);
transaction.commit();
session.close();
}
}
Spring整合c3p0连接池
1.配置db.properties
jdbc.jdbcUrl=jdbc:mysql:///test01
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.user=root
jdbc.password=123456
2.读取db.properties文件并引入连接池到spring中
<!-- 读取db.properties文件 -->
<context:property-placeholder location="classpath:db.properties" />
<!-- 配置c3p0连接池 -->
<bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" >
<property name="jdbcUrl" value="${jdbc.jdbcUrl}" ></property>
<property name="driverClass" value="${jdbc.driverClass}" ></property>
<property name="user" value="${jdbc.user}" ></property>
<property name="password" value="${jdbc.password}" ></property>
</bean>
3.将连接池注入给SessionFactory
<bean name="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean" >
<!-- 将连接池注入到sessionFactory, hibernate会通过连接池获得连接 -->
<property name="dataSource" ref="dataSource" ></property>
<!-- 配置hibernate基本信息 -->
...
...
spring整合hibernate环境操作数据库
//HibernateDaoSupport 为dao注入sessionFactory
public class UserDaoImpl extends HibernateDaoSupport implements UserDao {
@Override
public User getByUserCode(final String usercode) {
//HQL
return getHibernateTemplate().execute(new HibernateCallback<User>() {
@Override
public User doInHibernate(Session session) throws HibernateException {
String hql = "from User where user_code = ? ";
Query query = session.createQuery(hql);
query.setParameter(0, usercode);
User user = (User) query.uniqueResult();
return user;
}
});
//Criteria
DetachedCriteria dc = DetachedCriteria.forClass(User.class);
dc.add(Restrictions.eq("user_code", usercode));
List<User> list = (List<User>) getHibernateTemplate().findByCriteria(dc);
if(list != null && list.size()>0){
return list.get(0);
}else{
return null;
}
}
}
<!-- dao -->
<bean name="userDao" class="cn.itcast.dao.impl.UserDaoImpl" >
<!-- 注入sessionFactory -->
<property name="sessionFactory" ref="sessionFactory" ></property>
</bean>
Spring AOP 事务
准备工作
<!-- 核心事务管理器 -->
<bean name="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager" >
<property name="sessionFactory" ref="sessionFactory" ></property>
</bean>
xml配置aop事务
- 配置通知
<!-- 配置通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager" >
<tx:attributes>
<tx:method name="save*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
<tx:method name="persist*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
<tx:method name="update*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
<tx:method name="modify*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
<tx:method name="delete*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
<tx:method name="remove*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
<tx:method name="get*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="true" />
<tx:method name="find*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="true" />
</tx:attributes>
</tx:advice>
- 配置织入
<!-- 配置将通知织入目标对象
配置切点
配置切面 -->
<aop:config>
<aop:pointcut expression="execution(* cn.itcast.service.impl.*ServiceImpl.*(..))" id="txPc"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="txPc" />
</aop:config>
注解配置aop事务
- 开启注解事务
<!-- 开启注解事务 -->
<tx:annotation-driven transaction-manager="transactionManager" />
- Service类中使用注解
@Transactional(isolation=Isolation.REPEATABLE_READ,propagation=Propagation.REQUIRED,readOnly=true)
public class UserServiceImpl implements UserService{
private UserDao ud;
@Override
@Transactional(isolation=Isolation.REPEATABLE_READ,propagation=Propagation.REQUIRED,readOnly=false)
public void saveUser(User u) {
ud.save(u);
}
public void setUd(UserDao ud) {
this.ud = ud;
}
}
扩大session作用范围
为了避免使用懒加载时出现no-session问题.需要扩大session的作用范围
web.xml
<!-- 扩大session作用范围
注意: 任何filter一定要在struts的filter之前调用
-->
<filter>
<filter-name>openSessionInView</filter-name>
<filter-class>org.springframework.orm.hibernate5.support.OpenSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>openSessionInView</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
