ssh全注解整合

Posted 2020-10-26 既来之,则安之!

使用注解的方式，配置文件最少可以精简到三个，web.xml、applicationContext.xml和struts.xml。Hibernate可以完全交给Spring来管理，这样连hibernate.cfg.xml也省了。下面就一起看看这些基本的配置吧！

 

web.xml

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>
  <!--Spring配置
 1.上下文  识别applicationContext.xml

 2.监听器 在Tomcat容器启动的时候，帮我创建Spring容器，并且放入application中-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>

  <!--Struts2配置  核心过滤器 -->
  <filter>
    <filter-name>struts</filter-name>
    <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>struts</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
</web-app>

　　

 

web.xml中包含了Spring和struts的基本配置，自动扫描Action的配置就是告诉tomcat，我要使用注解来配置struts。

 

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans 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"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       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/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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
     http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
">
    <context:component-scan base-package="cn.baby"></context:component-scan>


    <!--
    1.数据源  c3p0
    -->
    <bean id="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="${jdbc.username}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>

    <!--
 2.识别到jdbc.properties
-->
    <context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder>
    <!--
 3.形成SessionFactory
-->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="hibernateProperties">
            <props>
                <!--方言-->
                <prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</prop>
                <!--自动建表-->
                <prop key="hibernate.hbm2ddl.auto">update</prop>
                <!--是否打印sql-->
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.format_sql">true</prop>
                <prop key="hibernate.current_session_context_class">org.springframework.orm.hibernate5.SpringSessionContext</prop>
            </props>
        </property>
        <!--关联小配置-->
        <property name="packagesToScan" value="cn.baby.entity"></property>
    </bean>

    <!--
    7.事务管理器
    -->
    <bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>
    <!--
    8.事务真实配置
    -->
    <tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>
</beans>

　　User实体

package com.tgb.ssh.model;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;


@Entity(name="t_user")
public class User {
	@Id
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	private int id;
	private String name;
	private String password;	
	 
	
	public int getId() {
		return id;
	}

	public void setId(int id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}
	
	public void setName(String name) {
		this.name = name;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
}

　　dao层实现一个增加的方法

package com.tgb.ssh.dao;

import javax.annotation.Resource;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.springframework.orm.hibernate4.HibernateTemplate;
import org.springframework.stereotype.Repository;

import com.tgb.ssh.model.User;

@Repository
public class UserDao {
	@Resource(name="sessionFactory") 
	private SessionFactory sessionFactory;
	
	public void addUser(User user ) {
		Session session = sessionFactory.getCurrentSession();
		session.save(user);
	}

}

　　service层

package com.tgb.ssh.service;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.tgb.ssh.dao.UserDao;
import com.tgb.ssh.model.User;

@Service
@Transactional
public class UserManager {
	@Resource
	UserDao userDao;
	
	public void addUser(User user) {
		userDao.addUser(user);
	}
	
}

　　action层

UserAction通过注解配置Action的名字和返回的页面，通过@Resource活动Spring注入的UserManager对象，然后进行相应的操作。Action里还有@Namespace、@InterceptorRef等很多注解可以用，根据自己需要选择吧。

package com.tgb.ssh.action;

import javax.annotation.Resource;

import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Result;
import org.apache.struts2.convention.annotation.Results;

import com.opensymphony.xwork2.ActionSupport;
import com.tgb.ssh.model.User;
import com.tgb.ssh.service.UserManager;


@Results( { @Result(name="success",location="/success.jsp"),
        @Result(name="failure",location="/failure.jsp") }) 
public class UserAction extends ActionSupport {
    @Resource
    private UserManager userManager;
    private User user;
    
    @Action(value="addUser")
    public String addUser() {
        try {
            userManager.addUser(user);        
        } catch (Exception e) {
            e.printStackTrace();
            return "failure";
        }
        return "success";
        
    }    

    public User getUser() {
        return user;
    }
    public void setUser(User user) {
        this.user = user;
    }
    
    
}

　　页面jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>添加用户</title>
  </head>
  
  <body>
      <form method="post" action="addUser">
        用户名：<input type="text" name="user.name"><br>
        密码：<input type="password" name="user.password"><br>        
        <input type="submit" value="登录"/>
    </form>    
  </body>
</html>