Develop Reference

How to setup ArrayList<String>

I am trying to run this code and ArrayList data = handler.getnames(); is showing an error variable data is alredy defined in method main(String[]). I am guessing it wants me to combine it with ArrayList data = handler.getsetnums();. But how to i do it? or is there another way?
Ones the code works, and should be able to run it and get an output, now when i only have one Array working the code does what it needs to do.
expected outcome
<set-num>00-1</set-num>
<name>WEETABIX CASTLE</name>
Thank you.
---MAIN.java---
package assign6;
import java.io.IOException;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.XMLReaderFactory;
/**
*
* #author assign
*/
public class Assign6 {
/**
* #param args the command line arguments
*/
public static void main(String[] args) {
System.out.print("Welcome to Benjamin Bolyard's Lego Sorter");
try {
XMLReader reader = XMLReaderFactory.createXMLReader();
MyHandler handler = new MyHandler();
reader.setContentHandler(handler);
reader.setErrorHandler(handler);
InputSource inputSource = new InputSource("legoSets.xml");
reader.parse(inputSource);
ArrayList<String> data = handler.getsetnums();
System.out.println("setnum List");
System.out.println("----------");
for (int i = 0; i < data.size(); i++) {
String setnum = data.get(i);
setnum = setnum.toUpperCase();
System.out.println((i + 1) + ": " + setnum);
}
ArrayList<String> data = handler.getnames();
System.out.println("name List");
System.out.println("----------");
for (int i = 0; i < data.size(); i++) {
String name = data.get(i);
name = name.toUpperCase();
System.out.println((i + 1) + ": " + name);
}
} catch (SAXException ex) {
Logger.getLogger(BolyardAssign6.class.getName())
.log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(BolyardAssign6.class.getName())
.log(Level.SEVERE, null, ex);
}
}
}
--HANDLER.java---
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package bolyardassign6;
import java.util.ArrayList;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.xml.sax.helpers.DefaultHandler;
/**
*
* #author bolya
*/
public class MyHandler extends DefaultHandler {
private boolean inlegosets;
private boolean inname;
private boolean insetnum;
private String nameBuffer;
private String setnumBuffer;
private ArrayList<String> setnums, names;
public ArrayList<String> getsetnums() {
return setnums;
}
public ArrayList<String> getnames() {
return names;
}
#Override
public void startDocument() throws SAXException {
// System.out.println("Start Document")
insetnum = false;
inname = false;
inlegosets = false;
nameBuffer = "";
names = new ArrayList<>();
}
#Override
public void startElement(String uri, String localName,
String qName, Attributes attributes) throws SAXException {
if (localName.equals("lego-sets")) {
inlegosets = true;
} else if (inlegosets && localName.equals("setnum")) {
// System.out.println("Start element : " + localName);
insetnum = true;
setnumBuffer = "";
} else if (inlegosets && localName.equals("name")) {
// System.out.println("Start element : " + localName);
inname = true;
nameBuffer = "";
}
}
#Override
public void characters(char[] ch, int start, int length) throws SAXException {
String data = new String(ch, start, length);
if (inlegosets && inname) {
// System.out.println("Characters : " + data);
nameBuffer = nameBuffer + data;
} else if (inlegosets && insetnum) {
// System.out.println("Characters : " + data);
setnumBuffer = setnumBuffer + data;
}
}
#Override
public void endElement(String uri, String localName,
String qName) throws SAXException {
if (localName.equals("inlegosets")) {
inlegosets = false;
} else if (inlegosets && localName.equals("setnum")) {
// System.out.println("Title: " + titleBuffer);
// System.out.println("End element : " + localName);
// System.out.println();
setnums.add(setnumBuffer);
insetnum = false;
} else if (inlegosets && localName.equals("name")) {
// System.out.println("Title: " + titleBuffer);
// System.out.println("End element : " + localName);
// System.out.println();
names.add(nameBuffer);
inname = false;
}
}
#Override
public void endDocument() throws SAXException {
// System.out.println("End Document");
}
#Override
public void error(SAXParseException e) throws SAXException {
System.out.println("ERROR: Line number " + e.getLineNumber());
System.out.println("ERROR: " + e.getMessage());
}
#Override
public void fatalError(SAXParseException e) throws SAXException {
System.out.println("FATAL ERROR: Line number " + e.getLineNumber());
System.out.println("FATAL ERROR: " + e.getMessage());
}
}
---legoset.xml---
<lego-sets>
<set>
<set-num>00-1</set-num>
<name>WEETABIX CASTLE</name>
<year>1970</year>
<num-parts>471</num-parts>
</set>
<set>
<set-num>0011-2</set-num>
<name>TOWN MINI-FIGURES</name>
<year>1978</year>
<num-parts>12</num-parts>
</set>
<set>
<set-num>0011-3</set-num>
<name>CASTLE 2 FOR 1 BONUS OFFER</name>
<year>1987</year>
<num-parts>2</num-parts>
</set>
<set>
<set-num>0012-1</set-num>
<name>SPACE MINI-FIGURES</name>
<year>1979</year>
<num-parts>12</num-parts>
</set>
</lego-sets>

You have defined two variables with the name data. To fix this, change the name of one of them. Alternatively you can remove the declaration and just have the following on the second arraylist: data = handler.getnames();

I am trying to run this code and ArrayList data = handler.getnames(); is showing an error variable data is alredy defined in method main(String[]). I am guessing it wants me to combine it with ArrayList data = handler.getsetnums();. But how to i do it? or is there another way?
You have the right idea. The error is caused because you have two variable declarations withe same name:
ArrayList data = handler.getnames()
and
ArrayList data = handler.getsetnums();
Java doesn't allow this. However, you don't necessarily want to "combine them together" because these are two separate lists that seem to represent two different things.
I suggest changing the names of both variables to something more meaningful than data. For example:
ArrayList names = handler.getnames()
and
ArrayList setnums = handler.getsetnums();
Presumably, names and setnums represent something meaningful for what you are doing here.

Printing textdata from toString - Java

I am working on a personal Java project and learning how to print out data from a text file. My code (as you can see below) prints out the userNameGenerator and personName data perfectly fine but I want it to be printed out from the toString in my Java Class. How can I change my code to print it out from there?
This is how my toString looks like:
#Override
public String toString() {
return userNameGenerator + " -> " + "[" + personName + "]" ;
}
Full code:
import java.util.*;
import java.io.*;
public class Codes {
public static void main(String[] args) {
List<Codes2> personFile = new ArrayList<>();
try {
BufferedReader br = new BufferedReader(new FileReader("person-data.txt"));
String fileRead = br.readLine();
while (fileRead != null) {
String[] personData = fileRead.split(":");
String personName = personData[0];
String userNameGenerator = personData[1];
Codes2 personObj = new Codes2(personName, userNameGenerator);
personFile.add(personObj);
fileRead = br.readLine();
}
br.close();
}
catch (FileNotFoundException ex) {
System.out.println("File not found!");
}
catch (IOException ex) {
System.out.println("An error has occured: " + ex.getMessage());
}
Set<String> newStrSet = new HashSet<>();
for(int i = 0; i < personFile.size(); i++){
String[] regionSplit = personFile.get(i).getUserNameGenerator().split(", ");
for(int j = 0; j < regionSplit.length; j++){
newStrSet.add(regionSplit[j]);
}
}
for (String p: newStrSet) {
System.out.printf("%s -> ", p);
for (Codes2 s: personFile) {
if (s.getUserNameGenerator().contains(p)) {
System.out.printf("%s, ", s.getPersonName());
}
}
System.out.println();
}
}
}
Java Class:
public class Codes2 implements Comparable<Codes2> {
private String personName;
private String userNameGenerator;
public Codes2(String personName, String userNameGenerator) {
this.personName = personName;
this.userNameGenerator = userNameGenerator;
}
public String getPersonName() {
return personName;
}
public String getUserNameGenerator() {
return userNameGenerator;
}
#Override
public int compareTo(Codes2 o) {
return getUserNameGenerator().compareTo(o.getUserNameGenerator());
}
public int compare(Object lOCR1, Object lOCR2) {
return ((Codes2)lOCR1).userNameGenerator
.compareTo(((Codes2)lOCR2).userNameGenerator);
}
#Override
public String toString() {
return userNameGenerator + " -> " + "[" + personName + "]" ;
}
}

Everything looks right in your code.
I think you should just call the method when you are trying to print it out:
for (Codes2 s: personFile) {
if (s.getUserNameGenerator().contains(p)) {
System.out.printf("%s, ", s.toString());
}
}
This follows the fact that the class that prints out the object is not so closely coupled with the class that hold the data.

Try:
#Override
public String toString() {
return String.format("%s -> [%s]",this.userNameGenerator,this.personName);
}

Gson to parse string of arrays

I need to parse the below JSON content. Currently I have stored it inflat file and reading it. I have given the sample POJO classes which are created and the code which I tried below.
Tried two different approach and both are giving the following error
Exception in thread "main" com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 3 path $
Json file
{
"DeviceCommon": {
"ASIdentifier": "123",
"DatadeliveyMechanism": "notify",
"MobileOriginatorCallbackReference": {
"url": "http://application.example.com/inbound/notifications/modatanotification/"
},
"AccessiblityCallbackReference": {
"url": "http://application.example.com/inbound/notifications/accessibilitystatusnotification"
}
},
"DeviceList": [{
"ExternalIdentifer": "123456#mydomain.com",
"msisdn": "123456",
"senderName": "Device1",
"MobileOriginatorCallbackReference": {
"notifyURL": "http://application.example.com/inbound/notifications/modatanotification/"
},
"ConfigurationResultCallbackReference": {
"notifyURL": "http://application.example.com/inbound/notifications/configurationResult"
},
"ASreferenceID": "AS000001",
"NIDDduration": "1d"
}]
}
POJO classes:
Note: I have mentioned only two classes here.
package com.As.jsonmodel.configrequest;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
#JsonIgnoreProperties(ignoreUnknown = true)
public class ConfigurationRequest
{
private DeviceList[] DeviceList;
private DeviceCommon DeviceCommon;
public DeviceList[] getDeviceList ()
{
return DeviceList;
}
public void setDeviceList (DeviceList[] DeviceList)
{
this.DeviceList = DeviceList;
}
public DeviceCommon getDeviceCommon ()
{
return DeviceCommon;
}
public void setDeviceCommon (DeviceCommon DeviceCommon)
{
this.DeviceCommon = DeviceCommon;
}
#Override
public String toString()
{
return "ClassPojo [DeviceList = "+DeviceList+", DeviceCommon = "+DeviceCommon+"]";
}
}
package com.As.jsonmodel.configrequest;
public class DeviceList
{
private MobileOriginatorCallbackReference MobileOriginatorCallbackReference;
private String NIDDduration;
private String ASreferenceID;
private String senderName;
private String ExternalIdentifer;
private String msisdn;
private ConfigurationResultCallbackReference ConfigurationResultCallbackReference;
public MobileOriginatorCallbackReference getMobileOriginatorCallbackReference ()
{
return MobileOriginatorCallbackReference;
}
public void setMobileOriginatorCallbackReference (MobileOriginatorCallbackReference MobileOriginatorCallbackReference)
{
this.MobileOriginatorCallbackReference = MobileOriginatorCallbackReference;
}
public String getNIDDduration ()
{
return NIDDduration;
}
public void setNIDDduration (String NIDDduration)
{
this.NIDDduration = NIDDduration;
}
public String getASreferenceID ()
{
return ASreferenceID;
}
public void setASreferenceID (String ASreferenceID)
{
this.ASreferenceID = ASreferenceID;
}
public String getSenderName ()
{
return senderName;
}
public void setSenderName (String senderName)
{
this.senderName = senderName;
}
public String getExternalIdentifer ()
{
return ExternalIdentifer;
}
public void setExternalIdentifer (String ExternalIdentifer)
{
this.ExternalIdentifer = ExternalIdentifer;
}
public String getMsisdn ()
{
return msisdn;
}
public void setMsisdn (String msisdn)
{
this.msisdn = msisdn;
}
public ConfigurationResultCallbackReference getConfigurationResultCallbackReference ()
{
return ConfigurationResultCallbackReference;
}
public void setConfigurationResultCallbackReference (ConfigurationResultCallbackReference ConfigurationResultCallbackReference)
{
this.ConfigurationResultCallbackReference = ConfigurationResultCallbackReference;
}
#Override
public String toString()
{
return "ClassPojo [MobileOriginatorCallbackReference = "+MobileOriginatorCallbackReference+", NIDD duration = "+NIDDduration+", AS referenceID = "+ASreferenceID+", senderName = "+senderName+", ExternalIdentifer = "+ExternalIdentifer+", msisdn = "+msisdn+", ConfigurationResultCallbackReference = "+ConfigurationResultCallbackReference+"]";
}
}
Json Reader
Approach1:
BufferedReader br = null;
try {
br = new BufferedReader(
new FileReader("/home/raj/apache-tomcat-8.0.3/webapps/file.json"));
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
JsonReader jsonReader = new JsonReader(new FileReader("/home/raj/apache-tomcat-8.0.3/webapps/file.json"));
jsonReader.beginObject();
while (jsonReader.hasNext()) {
String name = jsonReader.nextName();
if (name.equals("DeviceCommon")) {
readApp(jsonReader);
}
}
jsonReader.endObject();
jsonReader.close();
}
public static void readApp(JsonReader jsonReader) throws IOException{
jsonReader.beginObject();
while (jsonReader.hasNext()) {
String name = jsonReader.nextName();
System.out.println(name);
if (name.contains("ASIdentifier")){
jsonReader.beginObject();
while (jsonReader.hasNext()) {
String n = jsonReader.nextName();
if (n.equals("MobileOriginatorCallbackReference")){
System.out.println(jsonReader.nextString());
}
if (n.equals("AccessiblityCallbackReference")){
System.out.println(jsonReader.nextInt());
}
if (n.equals("DeviceList")){
jsonReader.beginArray();
while (jsonReader.hasNext()) {
System.out.println(jsonReader.nextString());
}
jsonReader.endArray();
}
}
jsonReader.endObject();
}
}
jsonReader.endObject();
}
// TODO Auto-generated method stub
Aproach2:
Gson gson = new Gson();
DeviceList [] myTypes = gson.fromJson(new FileReader("/home/raj/apache-tomcat-8.0.3/webapps/file.json"), DeviceList[].class);
System.out.println(gson.toJson(myTypes));
Any pointers on how to parse this file will be helpful.

Here's how to do it with Gson:
import java.io.FileReader;
import java.util.Arrays;
import com.google.gson.Gson;
import com.google.gson.annotations.SerializedName;
public class Main {
public static void main(String[] args) throws Exception {
Data data = new Gson().fromJson(new FileReader("data.json"), Data.class);
System.out.println(data);
}
}
class Data {
#SerializedName("DeviceCommon")
DeviceCommon deviceCommon;
#SerializedName("DeviceList")
DeviceListEntry[] deviceList;
#Override
public String toString() {
return "Data{" +
"\n deviceCommon=" + deviceCommon +
"\n deviceList=" + Arrays.toString(deviceList) +
"\n}";
}
}
class DeviceCommon {
#SerializedName("ASIdentifier")
String asIdentifier;
#SerializedName("DatadeliveyMechanism")
String datadeliveyMechanism;
#SerializedName("MobileOriginatorCallbackReference")
Url mobileOriginatorCallbackReference;
#SerializedName("AccessiblityCallbackReference")
Url accessiblityCallbackReference;
#Override
public String toString() {
return "DeviceCommon{" +
"\n asIdentifier='" + asIdentifier + '\'' +
"\n datadeliveyMechanism='" + datadeliveyMechanism + '\'' +
"\n mobileOriginatorCallbackReference=" + mobileOriginatorCallbackReference +
"\n accessiblityCallbackReference=" + accessiblityCallbackReference +
"\n }";
}
}
class DeviceListEntry {
#SerializedName("ExternalIdentifer")
String externalIdentifer;
String msisdn;
String senderName;
#SerializedName("MobileOriginatorCallbackReference")
NotifyUrl mobileOriginatorCallbackReference;
#SerializedName("ConfigurationResultCallbackReference")
NotifyUrl configurationResultCallbackReference;
#SerializedName("ASreferenceID")
String asReferenceID;
#SerializedName("NIDDduration")
String nidDduration;
#Override
public String toString() {
return "DeviceListEntry{" +
"\n externalIdentifer='" + externalIdentifer + '\'' +
"\n msisdn='" + msisdn + '\'' +
"\n senderName='" + senderName + '\'' +
"\n mobileOriginatorCallbackReference=" + mobileOriginatorCallbackReference +
"\n configurationResultCallbackReference=" + configurationResultCallbackReference +
"\n asReferenceID='" + asReferenceID + '\'' +
"\n nidDduration='" + nidDduration + '\'' +
"\n }";
}
}
class Url {
String url;
#Override
public String toString() {
return url;
}
}
class NotifyUrl {
String notifyURL;
#Override
public String toString() {
return notifyURL;
}
}
Running Main will result in the following output:
Data{
deviceCommon=DeviceCommon{
asIdentifier='123'
datadeliveyMechanism='notify'
mobileOriginatorCallbackReference=http://application.example.com/inbound/notifications/modatanotification/
accessiblityCallbackReference=http://application.example.com/inbound/notifications/accessibilitystatusnotification
}
deviceList=[DeviceListEntry{
externalIdentifer='123456#mydomain.com'
msisdn='123456'
senderName='Device1'
mobileOriginatorCallbackReference=http://application.example.com/inbound/notifications/modatanotification/
configurationResultCallbackReference=http://application.example.com/inbound/notifications/configurationResult
asReferenceID='AS000001'
nidDduration='1d'
}]
}

ClassNotFoundException with readObject() method

I'm trying to read objects from a file in the Internet. I have been given the object class, which is this:
import java.io.Serializable;
public class Sulearvuti extends Arvuti implements Serializable {
private static final long serialVersionUID = 1L;
//isendiväli
private int aku;
//konstruktor
public Sulearvuti(String tootja, String mudel, String lisainfo,
int järjekorraNumber, int raskusaste, boolean kiirtellimus, int aku)
throws ValeRaskusAsteErind {
super(tootja, mudel, lisainfo, järjekorraNumber, raskusaste,
kiirtellimus);
this.aku = aku;
}
// meetod toString, kasutama ülemklassi meetodit
public String toString() {
return "Sülearvuti [aku=" + aku + ", " + super.toString() + "]";
}
// meetodi ülekatmine
double parandamiseAeg(){
return this.getRaskusaste()*2;
}
}
Now when I'm trying to read the objects (Sulearvuti), I get ClassNotFoundException. This is the piece of code :
ObjectInputStream ois =
new ObjectInputStream (
new URL("http://www.ut.ee/~marinai/sulearvutid.dat")
.openConnection()
.getInputStream());
int arv=ois.readInt();
Sulearvuti sülearvuti=(Sulearvuti)ois.readObject();
There's no problem with the Integer, but it won't recognize the class. I've been desperate for the past hour or so...
Also here's the code for the superclass "Arvuti":
import java.io.Serializable;
public class Arvuti implements Serializable, Comparable<Arvuti> {
private String tootja;
private String mudel;
private String lisainfo;
private int jrnumber;
private int vea_raskusaste;
private boolean kiirtellimus;
String getTootja() {
return tootja;
}
String getMudel() {
return mudel;
}
String getLisainfo() {
return lisainfo;
}
int getJrnumber() {
return jrnumber;
}
int getVea_raskusaste() {
return vea_raskusaste;
}
boolean isKiirtellimus() {
return kiirtellimus;
}
void setTootja(String tootja) {
this.tootja = tootja;
}
void setMudel(String mudel) {
this.mudel = mudel;
}
void setLisainfo(String lisainfo)throws WindowsXPErind {
this.lisainfo = lisainfo;
if(lisainfo.contains("WindowsXP"))throw new WindowsXPErind();
}
void setJrnumber(int jrnumber) {
this.jrnumber = jrnumber;
}
void setVea_raskusaste(int vea_raskusaste)throws ValeRaskusAsteErind {
if(vea_raskusaste<1 || vea_raskusaste>10) throw new ValeRaskusAsteErind();
this.vea_raskusaste = vea_raskusaste;
}
void setKiirtellimus(boolean kiirtellimus) {
this.kiirtellimus = kiirtellimus;
}
Arvuti(String tootja, String mudel, String lisainfo, int jrnumber,
int vea_raskusaste, boolean kiirtellimus)throws ValeRaskusAsteErind {
try{
setTootja( tootja);
setMudel(mudel);
setJrnumber(jrnumber);
setVea_raskusaste(vea_raskusaste);
setKiirtellimus(kiirtellimus);
setLisainfo(lisainfo);
}
catch (WindowsXPErind e){
System.out.println("WindowsXPErind");
setVea_raskusaste(vea_raskusaste+2);
}
}
double parandamiseAeg(){
return getVea_raskusaste()*1.5;
}
public String toString() {
return "Arvuti [tootja=" + tootja + ", mudel=" + mudel + ", lisainfo="
+ lisainfo + ", järjekorranumber=" + jrnumber + ", vea raskusaste="
+ vea_raskusaste + ", kiirtellimus=" + kiirtellimus
+ ", parandamise aeg=" + parandamiseAeg() + "]";
}
public int compareTo(Arvuti arvuti){
if(this.isKiirtellimus()==true && arvuti.isKiirtellimus()==false) return -1;
else if(this.isKiirtellimus()==false && arvuti.isKiirtellimus()==true) return 1;
else{
if(this.getJrnumber()<arvuti.getJrnumber())return -1;
else if(this.getJrnumber()>arvuti.getJrnumber())return 1;
else return 0;
}
}
}
Exception in thread "main" java.lang.Error: Unresolved compilation problem:
Unhandled exception type ClassNotFoundException
at Peaklass.main(Peaklass.java:36)

You are missing some classes contained in the .dat file. Lookout for the classname shown in the classnotfound exception.
It is not sufficient to have the "Sulearvuti", you also need "Arvuti" (superclass) and "ValeRaskusAsteErind" (Exception) in your classpath.
BTW the language looks very funny to me, what language is this ?

Is "Sulearvuti" class on the classpath of the application trying to deserialize the object?

Exception when saving a result

I am developping J2EE application with appfuse , i have a webform called easyVolAction that contain a method search() I need to save the result of search method in database but and an excpetion is generated when clicking in the action search :NullPointerException in object trajet .I created TrajetDaoHibernate:
public TrajetDaoHibernate() {
super(TrajetModel.class);
}
/**
* {#inheritDoc}
*/
#SuppressWarnings("unchecked")
public List<TrajetModel> getTrajet() {
Session session = getSessionFactory().getCurrentSession();
Query qry = session.createQuery("from TrajetModel u order by upper(u.id)");
return qry.list();
}
/**
* {#inheritDoc}
*/
public TrajetModel saveTrajet(TrajetModel trajet) {
if (log.isDebugEnabled()) {
log.debug("user's id: " + trajet.getId());
}
Session session = getSessionFactory().getCurrentSession();
session.saveOrUpdate(trajet);
// necessary to throw a DataIntegrityViolation and catch it in UserManager
session.flush();
return trajet;
}
#Override
public TrajetModel save(TrajetModel trajet) {
return this.saveTrajet(trajet);
}
and TrajetDao:
public interface TrajetDao extends GenericDao {
List<TrajetModel> getTrajet();
TrajetModel saveTrajet(TrajetModel trajet);
}
and trajetManager:
#Service("trajetManager")
public class TrajetModelImpl extends GenericManagerImpl<TrajetModel, Long> implements TrajetManager {
private TrajetDao trajetDao;
#Autowired
public void setTrajetModelDao(TrajetDao trajetDao) {
this.dao = trajetDao;
this.trajetDao = trajetDao;
}
/**
* {#inheritDoc}
*/
public TrajetModel getTrajet(String trajetId) {
return trajetDao.get(new Long(trajetId));
}
/**
* {#inheritDoc}
*/
public List<TrajetModel> getTrajet() {
return trajetDao.getAllDistinct();
}
/**
* {#inheritDoc}
*/
public TrajetModel saveTrajet(TrajetModel trajet) throws TrajetExistsException {
try {
return trajetDao.saveTrajet(trajet);
} catch (DataIntegrityViolationException e) {
//e.printStackTrace();
log.warn(e.getMessage());
throw new TrajetExistsException("Trajet '" + trajet.getNom() + "' already exists!");
} catch (JpaSystemException e) { // needed for JPA
//e.printStackTrace();
log.warn(e.getMessage());
throw new TrajetExistsException("Trajet '" + trajet.getNom() + "' already exists!");
}
}
}
finnaly the action where i declare the search method:
public String recherche() throws IOException, TrajetExistsException {
HttpServletRequest request = (HttpServletRequest) FacesContext
.getCurrentInstance().getExternalContext().getRequest();
// String url1 =
// FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("hidden");
String departAller = request.getParameter("easyVolRobot:villeDepart");
String arriveeAller = request.getParameter("easyVolRobot:villeArrivee");
String jourAller = request.getParameter("easyVolRobot:jourDep");
String moisAller = request.getParameter("easyVolRobot:dateDep");
String jourRetour = request.getParameter("easyVolRobot:jourDep");
String moisRetour = request.getParameter("easyVolRobot:dateArr");
String jourAllerPlus1 = jourAller + 1;
parametre = "departAller=" + departAller + "&arriveeAller="
+ arriveeAller + "&jourAller=" + jourAller + "&moisAller="
+ moisAller + "&jourRetour=" + jourRetour + "&moisRetour="
+ moisRetour;
parametre1 = "departAller=" + departAller + "&arriveeAller="
+ arriveeAller + "&jourAller=" + jourAllerPlus1 + "&moisAller="
+ moisAller + "&jourRetour=" + jourRetour + "&moisRetour="
+ moisRetour;
String response = sendGetRequest(url, parametre);
// insert();
PrintStream out = null;
try {
out = new PrintStream(new FileOutputStream(
"/data/crawl/root/siteSNCF.html"));
out.print(response);
} finally {
if (out != null)
out.close();
}
// tableau de resultats des trajets
List<TrajetModel> listTrajets = new ArrayList<TrajetModel>();
// trajet
//TrajetModel trajet = new TrajetModel();
File input = new File("/data/crawl/root/siteSNCF.html");
Document doc = Jsoup.parse(input, "UTF-8",
"http://www.easyvols.org/france-voyage");
for (Element vol : doc.select("div.vols")) {
//trajet = new TrajetModel();
for (Element allerRetour : vol.select("div.aller-retour")) {
Elements aeroport = allerRetour.select("div.aeroport");
System.out.println(aeroport.text());
Elements depart = allerRetour.select("div.depart");
Elements arrive = allerRetour.select("div.arrivee");
Elements date = allerRetour.select("div.date");
trajet.setNom(aeroport.text());
trajet.setVilleDepart(depart.text());
trajet.setVilleArrive(arrive.text());
trajet.sethArrive(12);
trajet.sethDepart(11);
trajet.sethReqt(14);
}
Elements prix2 = vol.select("div.tarif");
trajet.setPrice(prix2.text());
trajet = trajetManager.saveTrajet(trajet);
System.out.println(trajet);}
return"mainMenu";
}

why you comment this line out?
//TrajetModel trajet = new TrajetModel();
I see no other line where you create the TrajetModel.
If that object is not initiated you get the NPE here:
trajet.setNom(aeroport.text());