modipassaction.java

此资源是jsp应用开发 邓子云等编写的一书里的源代码

package action;
import java.sql.Connection;
import java.sql.PreparedStatement;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;

/**
 * @author dengziyun
 * 增加一名用户的Action类
 */
public class modiPassAction extends Action{
	
	/**
	 * 在此方法中处理HTTP请求，并作响应
	 */
	public ActionForward execute(ActionMapping arg0, ActionForm arg1,
			HttpServletRequest request, HttpServletResponse reponse) throws Exception {
		ActionErrors errors=new ActionErrors();
		//------接收请求参数------
		String newPassword=request.getParameter("newPassword");
		String oaUserPassword=request.getParameter("oaUserPassword");
	  	//------构造SQL语句------
		String sqlStr=new String("update oaUser set oaUserPassword=?"+
  			" where oaUserId=? and oaUserPassword=?");
	  	//------更新数据------
	  	try{
			//------得到数据库连接------
			Context initCtx = new InitialContext(); 
			Context ctx = (Context) initCtx.lookup("java:comp/env");
			Object obj = (Object) ctx.lookup("jdbc/sqlserver");
			DataSource ds = (javax.sql.DataSource)obj;
			Connection conn = ds.getConnection();
			//------将数据更新到数据库------
			PreparedStatement preSQLUpdate=conn.prepareStatement(sqlStr);
		  	newPassword=new String(newPassword.getBytes("ISO-8859-1"));
		  	preSQLUpdate.setString(1,newPassword);
		  	preSQLUpdate.setLong(2,Long.parseLong(request.getSession().getAttribute("oaUserId").toString()));
		  	oaUserPassword=new String(oaUserPassword.getBytes("ISO-8859-1"));
		  	preSQLUpdate.setString(3,oaUserPassword);
		  	int i=preSQLUpdate.executeUpdate();
		  	if(i==0){
		  		errors.add("passwordError",new ActionMessage("passwordError"));
		  		saveErrors(request,errors);
		  		return arg0.findForward("modiPassJSP");
		  	}
		  	//------关闭数据库连接------
		  	if(conn!=null)
		  		conn.close();
		}catch(Exception e){
			e.printStackTrace();
			errors.add("DBOPError",new ActionMessage("DBOPError"));
			saveErrors(request,errors);
			System.out.println(e);
		}
		arg1.reset(arg0,request);
		return arg0.findForward("modiPassSuccessJSP");
	}
}