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http://ralf0131.blogbus.com/logs/55701639.html

参考：http://www.javaeye.com/topic/14631
关于JUnit4: http://www.ibm.com/developerworks/cn/java/j-junit4.html

背景：
如果在Hibernate层采用lazy=true的话，有的时候会抛出LazyInitializationException，这时一种解决办法是用OpenSessionInViewFilter,但是如果通过main方法来运行一些测试程序，那么上述方法就没有用武之地了。这里提供了一种方法，来达到实现和OpenSessionInViewFilter相同作用的目的。这里的应用场景是采用JUnit4来编写测试用例。

JUnit4的好处是：采用annotation来代替反射机制，不必写死方法名.
首先添加一个abstract class(AbstractBaseTestCase.class), 做一些准备性的工作：
(可以看到@Before和@After两个annotation的作用相当于setUp()和tearDown()方法，但是，显然更灵活)

package testcase;

import org.hibernate.FlushMode;

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.junit.After;

import org.junit.Before;

import org.springframework.context.support.FileSystemXmlApplicationContext;

import org.springframework.orm.hibernate3.SessionFactoryUtils;

import org.springframework.orm.hibernate3.SessionHolder;

import org.springframework.transaction.support.TransactionSynchronizationManager;

/***

 * An abstract base class for TestCases.

 * All test cases should extend this class.

 */

public class AbstractBaseTestCase {

    private SessionFactory sessionFactory;  

    private Session session;  

    protected FileSystemXmlApplicationContext dsContext;

    private String []configStr = {"/WebRoot/WEB-INF/applicationContext.xml"};  

@Before

public void openSession() throws Exception {

dsContext = new FileSystemXmlApplicationContext(configStr);

        sessionFactory = (SessionFactory) dsContext.getBean("sessionFactory");  

        session = SessionFactoryUtils.getSession(sessionFactory, true);  

        session.setFlushMode(FlushMode.MANUAL);  

        TransactionSynchronizationManager.bindResource(sessionFactory, new SessionHolder(session)); 

}

@After

public void closeSession() throws Exception {

TransactionSynchronizationManager.unbindResource(sessionFactory);  

        SessionFactoryUtils.releaseSession(session, sessionFactory);  

}

}

idCard.js部分*******************************************************

//****************************************************************************

// 构造函数，变量为15位或者18位的身份证号码
function clsIDCard(CardNo) {
  this.Valid=false;
  this.ID15='';
  this.ID18='';
  this.Local='';
  if(CardNo!=null)this.SetCardNo(CardNo);
}

// 设置身份证号码，15位或者18位
clsIDCard.prototype.SetCardNo = function(CardNo) {
  this.ID15='';
  this.ID18='';
  this.Local='';
  CardNo=CardNo.replace(" ","");
  var strCardNo;
  if(CardNo.length==18) {
    pattern= /^\d{17}(\d|x|X)$/;
    if (pattern.exec(CardNo)==null)return;
    strCardNo=CardNo.toUpperCase();
  } else {
    pattern= /^\d{15}$/;
    if (pattern.exec(CardNo)==null)return;
    strCardNo=CardNo.substr(0,6)+'19'+CardNo.substr(6,9)
    strCardNo+=this.GetVCode(strCardNo);
  }
  this.Valid=this.CheckValid(strCardNo);
}

// 校验身份证有效性
clsIDCard.prototype.IsValid = function() {
  return this.Valid;
}

// 返回生日字符串，格式如下，1981-10-10
clsIDCard.prototype.GetBirthDate = function() {
  var BirthDate='';
  if(this.Valid)BirthDate=this.GetBirthYear()+'-'+this.GetBirthMonth()+'-'+this.GetBirthDay();
  return BirthDate;
}

// 返回生日中的年，格式如下，1981
clsIDCard.prototype.GetBirthYear = function() {
  var BirthYear='';
  if(this.Valid)BirthYear=this.ID18.substr(6,4);
  return BirthYear;
}

// 返回生日中的月，格式如下，10
clsIDCard.prototype.GetBirthMonth = function() {
  var BirthMonth='';
  if(this.Valid)BirthMonth=this.ID18.substr(10,2);
  if(BirthMonth.charAt(0)=='0')BirthMonth=BirthMonth.charAt(1);
  return BirthMonth;
}

// 返回生日中的日，格式如下，10
clsIDCard.prototype.GetBirthDay = function() {
  var BirthDay='';
  if(this.Valid)BirthDay=this.ID18.substr(12,2);
  return BirthDay;
}

// 返回性别，1：男，0：女
clsIDCard.prototype.GetSex = function() {
  var Sex='';
  if(this.Valid)Sex=this.ID18.charAt(16)%2;
  return Sex;
}

// 返回15位身份证号码
clsIDCard.prototype.Get15 = function() {
  var ID15='';
  if(this.Valid)ID15=this.ID15;
  return ID15;
}

// 返回18位身份证号码
clsIDCard.prototype.Get18 = function() {
  var ID18='';
  if(this.Valid)ID18=this.ID18;
  return ID18;
}

// 返回所在省，例如：上海市、浙江省
clsIDCard.prototype.GetLocal = function() {
  var Local='';
  if(this.Valid)Local=this.Local;
  return Local;
}

clsIDCard.prototype.GetVCode = function(CardNo17) {
  var Wi = new Array(7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2,1);
  var Ai = new Array('1','0','X','9','8','7','6','5','4','3','2');
  var cardNoSum = 0;
  for (var i=0; i<CardNo17.length; i++)cardNoSum+=CardNo17.charAt(i)*Wi[i];
  var seq = cardNoSum%11;
  return Ai[seq];
}

clsIDCard.prototype.CheckValid = function(CardNo18) {
  if(this.GetVCode(CardNo18.substr(0,17))!=CardNo18.charAt(17))return false;
  if(!this.IsDate(CardNo18.substr(6,8)))return false;
  var aCity={11:"北京",12:"天津",13:"河北",14:"山西",15:"内蒙古",21:"辽宁",22:"吉林",23:"黑龙江 ",31:"上海",32:"江苏",33:"浙江",34:"安徽",35:"福建",36:"江西",37:"山东",41:"河南",42:"湖北 ",43:"湖南",44:"广东",45:"广西",46:"海南",50:"重庆",51:"四川",52:"贵州",53:"云南",54:"西藏 ",61:"陕西",62:"甘肃",63:"青海",64:"宁夏",65:"新疆",71:"台湾",81:"香港",82:"澳门",91:"国外"};
  if(aCity[parseInt(CardNo18.substr(0,2))]==null)return false;
  this.ID18=CardNo18;
  this.ID15=CardNo18.substr(0,6)+CardNo18.substr(8,9);
  this.Local=aCity[parseInt(CardNo18.substr(0,2))];
  return true;
}

clsIDCard.prototype.IsDate = function(strDate) {
  var r = strDate.match(/^(\d{1,4})(\d{1,2})(\d{1,2})$/);
  if(r==null)return false;
  var d= new Date(r[1], r[2]-1, r[3]);
  return (d.getFullYear()==r[1]&&(d.getMonth()+1)==r[2]&&d.getDate()==r[3]);
}

页面部分**************************************************************

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>身份证验证</title>
<script src="idCard.js"></script>
</head>
<body>
<script>
 function valiIdCard(idCard){
  var checkFlag = new clsIDCard(idCard);
  if (!checkFlag.IsValid()) {
   alert("输入的身份证号无效,请输入真实的身份证号！");
   document.getElementByIdx("idCard").focus();
   return false;
  }else{
    alert("正确！");
  }
 }

</script>
<input id="idCard" type="text" onblur="valiIdCard(this.value)"/>
</body>