encryptbean.java

《J2EE企业级应用开发》一书的配套源代码

//EncryptBean.java
package com.j2eeapp.ch20.statefulencrypt;

import java.rmi.RemoteException; 
import javax.ejb.SessionBean; 
import javax.ejb.SessionContext; 
public class EncryptBean implements SessionBean 
{ 

	int code;
	StringBuffer result;
	//加密方法，这里只是演示，用了简单的异或运算
	public void encrypt(String strSource) 
	{ 
		result =new StringBuffer(); //清空result原来的东西
		for(int i=0;i<strSource.length();i++)
		{
			result.append(Integer.parseInt(strSource.substring(i,i+1))^code);
		}
	}//encrypt() 
	//解密方法
	public void decrypt(String strSource) 
	{ 
		result =new StringBuffer(); //清空result原来的东西
		for(int i=0;i<strSource.length();i++)
		{
			result.append(Integer.parseInt(strSource.substring(i,i+1))^code);
		}
	}//decrypt() 
	public void ejbCreate(int code)
	{
		this.code=code;
	}//ejbCreate() 
	public String getResult()
	{
		return result.toString();
	}
	public void ejbActivate() {}//ejbActivate() 
	public void ejbRemove() {}//ejbRemove() 
	public void ejbPassivate() {}//ejbPassivate() 
	public void setSessionContext( SessionContext sc ) {}//setSessionContext() 
	public void ejbLoad() {}//ejbLoad() 
	public void ejbStore() {}//ejbStore() 

}/* EncryptBean */