Hibernate 实现批量添加数据

Hibernate 实现批量添加数据

1.Hibernate_016_BatchAddData程序目录结构：

2.lib目录下所引入的jar包：

3.MedicineDao.java源代码：

package com.xqh.dao;

import java.util.List;

import org.hibernate.Session;

import com.xqh.model.Medicine;
import com.xqh.util.HibernateUtil;

/**
 * 药品数据库操作类
 *
 */
public class MedicineDao {
    /**
     * 批量保存药品
     *
     * @param ms
     *            List集合
     */
    public void saveMedicines(List ms) {
        Session session = null;
        if (ms != null && ms.size() > 0) {
            try {
                session = HibernateUtil.getSession(); // 获取Session
                session.beginTransaction(); // 开启事物
                Medicine medicine = null; // 创建药品对象
                // 循环获取药品对象
                for (int i = 0; i < ms.size(); i++) {
                    medicine = (Medicine) ms.get(i); // 获取药品
                    session.save(medicine); // 保存药品对象
                    // 批插入的对象立即写入数据库并释放内存
                    if (i % 10 == 0) {
                        session.flush();
                        session.clear();
                    }
                }
                session.getTransaction().commit(); // 提交事物
            } catch (Exception e) {
                e.printStackTrace(); // 打印错误信息
                session.getTransaction().rollback(); // 出错将回滚事物
            } finally {
                HibernateUtil.closeSession(session); // 关闭Session
            }
        }
    }
}

4.Medicine.java源代码：

package com.xqh.model;
/**
 * 药品持久化类
 */
public class Medicine {
    private Integer id;             //id号
    private String name;            //药品名称
    private double price;           //价格
    private String factoryAdd;      //出厂地址
    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 double getPrice() {
        return price;
    }
    public void setPrice(double price) {
        this.price = price;
    }
    public String getFactoryAdd() {
        return factoryAdd;
    }
    public void setFactoryAdd(String factoryAdd) {
        this.factoryAdd = factoryAdd;
    }
}

5.Medicine.hbm.xml源代码：

xml version="1.0"?>

    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
    <class name="com.xqh.model.Medicine" table="tb_medicine_batch">
        <id name="id">
            <generator class="native"/>
        id>
        <property name="name" not-null="true" length="200" />
        <property name="price" not-null="true"/>
        <property name="factoryAdd" length="200"/>
    class>
hibernate-mapping>

6.SaveMedicine.java源代码：

package com.xqh.servlet;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.xqh.dao.MedicineDao;
import com.xqh.model.Medicine;

public class SaveMedicine extends HttpServlet {
    private static final long serialVersionUID = 3743334039515411666L;

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // 药品名称
        String names[] = request.getParameterValues("name");
        // 价格
        String prices[] = request.getParameterValues("price");
        // 出厂地址
        String adds[] = request.getParameterValues("factoryAdd");
        // 有效性判断
        if(names != null && prices != null && adds != null){
            if(names.length == prices.length && names.length == adds.length){
                // 实例化一个List集合
                List ms = new ArrayList();
                Medicine m = null;  // 药品对象
                // 依次实例化药品对象并添加到集合中
                for (int i = 0; i < names.length; i++) {
                    m = new Medicine(); // 实例化药品
                    // 对属性赋值
                    m.setName(names[i]);
                    m.setPrice(Double.parseDouble(prices[i]));
                    m.setFactoryAdd(adds[i]);
                    ms.add(m);  // 添加到集合中
                }
                // 实例化MedicineDao对象
                MedicineDao dao = new MedicineDao();
                dao.saveMedicines(ms);  // 批量保存药品
                request.setAttribute("info", "药品信息保存成功！！！");
            }
        }
        // 转发到result.jsp页面
        request.getRequestDispatcher("result.jsp").forward(request, response);
    }
}

7.CharacterEncodingFilter.java源代码：

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package com.xqh.util;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

/**
 * 字符编码过滤器
 */
public class CharacterEncodingFilter implements Filter{

    protected String encoding = null;
    protected FilterConfig filterConfig = null;

    public void init(FilterConfig filterConfig) throws ServletException {
        this.filterConfig = filterConfig;
        this.encoding = filterConfig.getInitParameter("encoding");
    }

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        if (encoding != null) {
            request.setCharacterEncoding(encoding);
            response.setContentType("text/html; charset="+encoding);
        }
        chain.doFilter(request, response);
    }

    public void destroy() {
        this.encoding = null;
        this.filterConfig = null;
    }
}

8.HibernateUtil.java源代码：

package com.xqh.util;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

/**
 * Hibernate初始化类，用于获取Session、SessionFactory 及关闭Session
 */
public class HibernateUtil {
    // SessionFactory对象
    private static SessionFactory factory = null;
    // 静态块
    static {
        try {
            // 加载Hibernate配置文件
            Configuration cfg = new Configuration().configure();
            // 实例化SessionFactory
            factory = cfg.buildSessionFactory();
        } catch (HibernateException e) {
            e.printStackTrace();
        }
    }
    /**
     * 获取Session对象
     * @return Session对象
     */
    public static Session getSession() {
        //如果SessionFacroty不为空，则开启Session
        Session session = (factory != null) ? factory.openSession() : null;
        return session;
    }
    /**
     * 获取SessionFactory对象
     * @return SessionFactory对象
     */
    public static SessionFactory getSessionFactory() {
        return factory;
    }
    /**
     * 关闭Session
     * @param session对象
     */
    public static void closeSession(Session session) {
        if (session != null) {
            if (session.isOpen()) {
                session.close(); // 关闭Session
            }
        }
    }
}

9.hibernate.cfg.xml源代码：

xml version='1.0' encoding='UTF-8'?>

          "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
          "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>

        <property name="dialect">org.hibernate.dialect.MySQLDialectproperty>

        <property name="connection.url">jdbc:mysql://localhost:3306/learnproperty>

        <property name="connection.username">rootproperty>

        <property name="connection.password">1120property>

        <property name="connection.driver_class">com.mysql.jdbc.Driverproperty>

        <property name="show_sql">trueproperty>

        <property name="hibernate.hbm2ddl.auto">updateproperty>

        <mapping resource="com/xqh/model/Medicine.hbm.xml"/>
    session-factory>
hibernate-configuration>

10.log4j.properties源代码：

### 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{1}:%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

11.index.jsp源代码：

<%@ page language="java" contentType="text/html" pageEncoding="GBK"%>
>
<html>
    <head>
        <title>批量添加药品信息title>
        <style type="text/css">
td {
    background: #EBEBEB;
    font-family: Verdana;
    font-size: 12px;
    background-color: #EBEBEB;
    color: black;
    line-height: 20px;
    height: 30px;
}
style>
        <script type="text/javascript">
        function add(){
            var a = document.getElementById("a");
            var b = document.getElementById("b");
            b.innerHTML += a.innerHTML;
        }

        function reduce() {
            var a = document.getElementById("a");
            var b = document.getElementById("b");
            var stra = a.innerHTML;
            var strb = b.innerHTML;
            b.innerHTML = strb.substring(0, strb.length - stra.length);
        }
        function save(formName){
            for(i=0;i<formName.length;i++){
                if(formName.elements[i].value==""){
                    alert("请填写完整信息!");
                    return false;
                }
            }
        }
    script>
    head>

    <body onload="add()">
        <form action="SaveMedicine" method="post"
            onsubmit="return save(this);">
            <table align="center" border="0" cellpadding="3" cellspacing="1"
                width="600">
                <tr>
                    <td align="center">
                        <br>
                        <h1>
                            批量添加药品信息
                        h1>
                    td>
                tr>
                <tr>
                    <td>
                        <div id="b">div>
                    td>
                tr>
                <tr>
                    <td>
                        <input type="button" value="添加一行 " onclick="add()">
                        <input type="button" value="减少一行" onclick="reduce()">
                        <input type="submit" value="批量添加到数据库">
                    td>
                tr>
            table>
        form>
        <div id="a" style="display: none">
            <table align="center" border="0">
                <tr>
                    <td>
                        名称：
                    td>
                    <td>
                        <input type="text" name="name" size="13">
                    td>
                    <td>
                        单价：
                    td>
                    <td>
                        <input type="text" name="price" size="13">
                    td>
                    <td>
                        厂址：
                    td>
                    <td>
                        <input type="text" name="factoryAdd" size="30">
                    td>
                tr>
            table>
        div>
    body>
html>

12.result.jsp源代码：

<%@ page language="java" contentType="text/html" pageEncoding="GBK"%>
>
<html>
  <head>
    <title>结果信息title>

  head>

  <body>
    <div align="center">
        <font color="red" size="12px;" style="font-weight: bold;">
            ${info}
        font>
        <br><br><br><br>
        <a href="index.jsp">返回a>
    div>
  body>
html>

13.数据表tb_medicine_batch结构：

14.程序运行结果截图：