实现用户名密码登陆，输入错误3次后锁定用户

publicvoidprerender(){

//IftheRequestBean'spersonIdisset,then

//wejustcamebackfromtheTrippage

//andhaddisplayedaselectedtrip.

//WeusethepersonIdlatertodeterminewhether

//toexpandaperson'snode

IntegerexpandedPersonId=getRequestBean1().getPersonId();

try{

//Setupthevariableswewillneed

IntegercurrentPersonId=newInteger(-1);

//IfnbrChildrenisnot0thenthisisa

//postbackandwehaveourtreealready

intnbrChildren=displayTree.getChildCount();

if(nbrChildren==0){

//Listofouter(person)nodes

ListouterChildren=displayTree.getChildren();

//Erasepreviouscontents

outerChildren.clear();

//Listofinner(trip)nodes

ListinnerChildren=null;

//ExecutetheSQLquery

tripDataProvider.refresh();

//Iterateovertherowsoftheresultset.

//Everytimeweencounteranewperson,addfirstlevelnode.

//Addsecondleveltripnodestotheparentpersonnode.

booleanhasNext=tripDataProvider.cursorFirst();

while(hasNext){

IntegernewPersonId=

(Integer)tripDataProvider.getValue(

"TRIP.PERSONID");

if(!newPersonId.equals(currentPersonId)){

currentPersonId=newPersonId;

TreeNodepersonNode=newTreeNode();

personNode.setId("person"+newPersonId.toString());

personNode.setText(

(String)tripDataProvider.getValue(

"PERSON.NAME"));

//Iftherequestbeanpassedapersonid,

//expandthatperson'snode

personNode.setExpanded(newPersonId.equals

(expandedPersonId));

outerChildren.add(personNode);

innerChildren=personNode.getChildren();

}

//Createanewtripnode

TreeNodetripNode=newTreeNode();

tripNode.setId("trip"+

tripDataProvider.getValue("TRIP.TRIPID").toString());

tripNode.setText(

tripDataProvider.getValue("TRIP.DEPDATE").toString());

tripNode.setUrl("/faces/Trip.jsp?tripId="+

tripDataProvider.getValue("TRIP.TRIPID").toString());

innerChildren.add(tripNode);

hasNext=tripDataProvider.cursorNext();

}

}

}catch(Exceptionex){

log("Exceptiongatheringtreedata",ex);

error("Exceptiongatheringtreedata:"+ex);

}

}