SSH整合

整合Struts2+Hibernate5.0+Spring4.0

本整合采用struts利用文件配置
Hibernate用xml配置
Spring配置文件和注解

引入jar包

hibernate-release-5.2.7
struts-2.3.31
spring-framework-4.3.6
mysql 的数据驱动包
注意：引入log4j之后不要忘了去引入commons-logging-1.1.3.jar

jar包

配置文件

• struts2框架的配置文件

web.xml空文件

    
        index.jsp
    

配置struts2.3版本的过滤器

    struts2
    org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter


    struts2
    *.action


    struts2
    *.jsp

• Hibernate框架的配置文件

可以集成在Spring中。

• Spring框架的配置文件

web.xml中配置spring的监听器

    org.springframework.web.context.ContextLoaderListener


    contextConfigLocation
    classpath:applicationContext.xml

applicationContext.xml 基本内容

• log4j.properties

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

### direct messages to file hibernate.log ###
#log4j.appender.file=org.apache.log4j.FileAppender
#log4j.appender.file.File=hibernate.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' ###

log4j.rootLogger=warn, stdout

#log4j.logger.org.hibernate=info
#log4j.logger.org.hibernate=debug

### log HQL query parser activity
#log4j.logger.org.hibernate.hql.ast.AST=debug

### log just the SQL
#log4j.logger.org.hibernate.SQL=debug

### log JDBC bind parameters ###
#log4j.logger.org.hibernate.type=info
#log4j.logger.org.hibernate.type=debug

### log schema export/update ###
log4j.logger.org.hibernate.tool.hbm2ddl=debug

### log HQL parse trees
#log4j.logger.org.hibernate.hql=debug

### log cache activity ###
#log4j.logger.org.hibernate.cache=debug

### log transaction activity
#log4j.logger.org.hibernate.transaction=debug

### log JDBC resource acquisition
#log4j.logger.org.hibernate.jdbc=debug

### enable the following line if you want to track down connection ###
### leakages when using DriverManagerConnectionProvider ###
#log4j.logger.org.hibernate.connection.DriverManagerConnectionProvider=trace

包的命名

工程目录

struts2和spring的两种整合方式

• 1、Action的类由Struts2自身去创建

在struts.xml中配置

applicationContext.xml中只配置service和dao

• 2、Action的类交给Spring框架去创建

struts.xml改为

applicationContext.xml改为

hibernate与spring整合

• 创建pojo的映射文件

• 在applicationContext.xml中配置数据库

    
        ${jdbc.driverClass}
    
    
        ${jdbc.url}
    
    
        ${jdbc.username}
    
    
        ${jdbc.password}
    




    
        
    
    
        
            org.hibernate.dialect.MySQLDialect
            true
            true
            update
        
    
    
        
            com/ben/pojo/Product.hbm.xml
        
    

• jdbc.properties

jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/sshdemo
jdbc.username=root
jdbc.password=123456

• dao层做适当的修改

• 事务配置

最终文件

pojo层文件

Product.java

package com.ben.pojo;

/**
 * 产品的实体类
 * @author zzq
 *
 */
public class Product {

    private Integer pid;
    private String pname;
    private Double price;

    public Integer getPid() {
        return pid;
    }

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

    public String getPname() {
        return pname;
    }

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

    public Double getPrice() {
        return price;
    }

    public void setPrice(Double price) {
        this.price = price;
    }

    public Product() {
        super();
    }

    public Product(Integer pid, String pname, Double price) {
        super();
        this.pid = pid;
        this.pname = pname;
        this.price = price;
    }

    @Override
    public String toString() {
        return "Product [pid=" + pid + ", pname=" + pname + ", price=" + price + "]";
    }
}

Product.hbm.xml

service层文件

ProductServiceImpl.java

package com.ben.service.impl;

import javax.annotation.Resource;

import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;

import com.ben.dao.IProductDAO;
import com.ben.pojo.Product;
import com.ben.service.IProdoctService;

@Service("productService")
public class ProductServiceImpl implements IProdoctService {

    private IProductDAO productDAO;

    @Override
    public void save(Product product) {
        System.out.println("ProductServiceImpl");
        productDAO.save(product);
    }

    public IProductDAO getProductDAO() {
        return productDAO;
    }

    @Resource(name="productDAO")
    public void setProductDAO(IProductDAO productDAO) {
        this.productDAO = productDAO;
    }
}

dao层文件

package com.ben.dao.impl;

import javax.annotation.Resource;

import org.hibernate.FlushMode;
import org.hibernate.SessionFactory;
import org.springframework.orm.hibernate5.support.HibernateDaoSupport;
import org.springframework.stereotype.Repository;

import com.ben.dao.IProductDAO;
import com.ben.pojo.Product;

@Repository("productDAO")
public class ProductDAOImpl extends HibernateDaoSupport implements IProductDAO{

    @Override
    @Transactional(propagation=Propagation.REQUIRED,rollbackFor=Exception.class,timeout=10000,isolation=Isolation.DEFAULT)
    public void save(Product product) {
        System.out.println(product);
        System.out.println("ProductDAOImpl");
        getHibernateTemplate().save(product);
    }

    @Resource(name="sessionFactory")
    public void setSessionFactory0(SessionFactory sessionFactory){  
        super.setSessionFactory(sessionFactory);  
    }

}

applicationContext.xml

    
    

    
    

    
    
        
            ${jdbc.driverClass}
        
        
            ${jdbc.url}
        
        
            ${jdbc.username}
        
        
            ${jdbc.password}
        
    

    
    
        
            
        
        
            
                org.hibernate.dialect.MySQLDialect
                true
                true
                update
                true
            
        
        
            
                com/ben/pojo/Product.hbm.xml
            
        
    

    
    
        
            
        
    

    
    

web.xml

    
    
        struts2
        org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
    
    
        struts2
        *.action
    

    
    
        org.springframework.web.context.ContextLoaderListener
    
    
        contextConfigLocation
        classpath:applicationContext.xml
    

    
        index.jsp
    

注意

1、在发现无法注入sessionFactory的时候，记得在dao层添加

@Resource(name="sessionFactory")
public void setSessionFactory0(SessionFactory sessionFactory){  
    super.setSessionFactory(sessionFactory);  
}

2、在出现事务不能为“readonly”的时候，如果用的是hibernate3。可以在web.xml中添加解决问题，但是在hibernate5的配置中没有效果，点击源码发现，flushMode这个变量已经不见了，在方法中的调用中也显示已经过时

   openSessionInViewFilter
   org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
   
       flushMode
       AUTO
   


   openSessionInViewFilter
   *.action

3、要用事务的配置，在applicationContext.xml 中配置(注解版)

在applicationContext.xml中添加

dao层中的方法上添加

@Transactional(propagation=Propagation.REQUIRED,rollbackFor=Exception.class,timeout=10000,isolation=Isolation.DEFAULT)

4、事务配置，非注解版