Lire à partir un fichier xml

**habiba34** · 27/06/2011, 17h52

Bonjour

j'ai fait un programme qui lit à partir un fichier (xml) et pour chaque élément de l'arbre d'objets parcours, il doit prendre la valeur de l’élément avec la méthode getnodValue() et la mettre dans un attribut d'un objet créer déja....

le problème est :

le programme signal un erreur sur la ligne de code liée à la conversion de type, comme suit :
NodeList ScholarElmntLst = element.getElementsByTagName("Scholar");
NodeList SizeElmntLst = element.getElementsByTagName("Size");
Element SizeElmnt = (Element) SizeElmntLst.item(0);
NodeList size = SizeElmnt.getChildNodes();
String SizeName = ((Node) size.item(0)).getNodeValue() ;
universite.setSize (Float.parseFloat(SizeName));
j'ai besoin de votre aide merci

**thelvin** · 27/06/2011, 18h16

Sans voir le XML en question je saurais pas dire, mais...

SizeName ça a l'air de désigner un nom. Un nom n'est pas un nombre et ne peut pas être passé à Float.parseFloat(), cela n'aurait pas de sens.

**habiba34** · 27/06/2011, 20h48

Merci beaucoup pour la réponse
d'abord pour SizeName c'est une notation seulement, elle prend la valeur du noeud et voici le code xml :
<?xml version="1.0" encoding="iso-8859-1"?>
<universite_Set>
<universite_Record>
<Num>1</Num>
<University>University of Cape Town</University>
<Contry>South of africa </Contry>
<WorldRank>317</WorldRank>
<Size>339</Size>
<Visibilitiy>329</Visibilitiy>
<RichFiles>320</RichFiles>
<Scholar>463</Scholar>
</universite_Record>
<universite_Record>
<Num>2</Num>
<University>university of Pertoria</University>
<Contry>South of afirca </Contry>
<WorldRank>474</WorldRank>
<Size>378</Size>
<Visibilitiy>719</Visibilitiy>
<RichFiles>779</RichFiles>
<Scholar>56</Scholar>
</universite_Record>
<universite_Record>
<Num>3</Num>
<University>Stellenbosch University</University>
<Contry>South of africa </Contry>
<WorldRank>517</WorldRank>
<Size>701</Size>
<Visibilitiy>808</Visibilitiy>
<RichFiles>437</RichFiles>
<Scholar>116</Scholar>
</universite_Record>
<universite_Record>
<Num>4</Num>
<University>University of the Witwatersrand</University>
<Contry>South of afirca</Contry>
<WorldRank>640</WorldRank>
<Size>1,522</Size>
<Visibilitiy>819</Visibilitiy>
<RichFiles>606</RichFiles>
<Scholar>181</Scholar>
</universite_Record>
<universite_Record>
<Num>5</Num>
<University>Rhodes University</University>
<Contry>South of afirca</Contry>
<WorldRank>700</WorldRank>
<Size>1,379</Size>
<Visibilitiy>579</Visibilitiy>
<RichFiles>1,292</RichFiles>
<Scholar>464</Scholar>
</universite_Record>
<universite_Record>
<Num>6</Num>
<University>University of Kwazulu Natal</University>
<Contry>South of afirca</Contry>
<WorldRank>1,051</WorldRank>
<Size>898</Size>
<Visibilitiy>1,77</Visibilitiy>
<RichFiles>1,002</RichFiles>
<Scholar>982</Scholar>
</universite_Record>
<universite_Record>
<Num>7</Num>
<University>University of the Western Cape</University>
<Contry>South of afirca</Contry>
<WorldRank>1,078</WorldRank>
<Size>1,497</Size>
<Visibilitiy>1,915</Visibilitiy>
<RichFiles>1,025</RichFiles>
<Scholar>739</Scholar>
</universite_Record>
<universite_Record>
<Num>8</Num>
<University>University of South Africa</University>
<Contry>South of afirca</Contry>
<WorldRank>1,115</WorldRank>
<Size>1,604</Size>
<Visibilitiy>2,975</Visibilitiy>
<RichFiles>2,173</RichFiles>
<Scholar>147</Scholar>
</universite_Record>
<universite_Record>
<Num>9</Num>
<University>University of Johannesburg</University>
<Contry>South of afirca</Contry>
<WorldRank>1,227</WorldRank>
<Size>3,085</Size>
<Visibilitiy>2,365</Visibilitiy>
<RichFiles>1,523</RichFiles>
<Scholar>490</Scholar>
</universite_Record>
<universite_Record>
<Num>10</Num>
<University>Makerere University</University>
<Contry>Oganda</Contry>
<WorldRank>1,402</WorldRank>
<Size>1,738</Size>
<Visibilitiy>4,524</Visibilitiy>
<RichFiles>2,21</RichFiles>
<Scholar>518</Scholar>
</universite_Record>
<universite_Record>
<Num>11</Num>
<University>Cairo University</University>
<Contry>Egypte</Contry>
<WorldRank>1,405</WorldRank>
<Size>1,714</Size>
<Visibilitiy>2,304</Visibilitiy>
<RichFiles>1,692</RichFiles>
<Scholar>1,188</Scholar>
</universite_Record>
<universite_Record>
<Num>12</Num>
<University>American University in Cairo</University>
<Contry>Egypte</Contry>
<WorldRank>1,626</WorldRank>
<Size>2,114</Size>
<Visibilitiy>1,88</Visibilitiy>
<RichFiles>1,543</RichFiles>
<Scholar>1,899</Scholar>
</universite_Record>
<universite_Record>
<Num>13</Num>
<University>Ain Shams University</University>
<Contry>Egypte</Contry>
<WorldRank>1,998</WorldRank>
<Size>3,755</Size>
<Visibilitiy>6,963</Visibilitiy>
<RichFiles>4,057</RichFiles>
<Scholar>252</Scholar>
</universite_Record>
<universite_Record>
<Num>14</Num>
<University>Mansoura University</University>
<Contry>Egypte</Contry>
<WorldRank>2,102</WorldRank>
<Size>1,435</Size>
<Visibilitiy>5,211</Visibilitiy>
<RichFiles>1,873</RichFiles>
<Scholar>2,678</Scholar>
</universite_Record>
<universite_Record>
<Num>15</Num>
<University>University of the Free State *</University>
<Contry>South of afirca</Contry>
<WorldRank>2,146</WorldRank>
<Size>5,766</Size>
<Visibilitiy>5,164</Visibilitiy>
<RichFiles>2,528</RichFiles>
<Scholar>679</Scholar>
</universite_Record>
<universite_Record>
<Num>16</Num>
<University>North West University</University>
<Contry>South of afirca</Contry>
<WorldRank>2,232</WorldRank>
<Size>5,272</Size>
<Visibilitiy>3,483</Visibilitiy>
<RichFiles>4,432</RichFiles>
<Scholar>515</Scholar>
</universite_Record>
<universite_Record>
<Num>17</Num>
<University>Nelson Mandela Metropolitan University</University>
<Contry>South of afirca</Contry>
<WorldRank>2,444</WorldRank>
<Size>2,096</Size>
<Visibilitiy>5,456</Visibilitiy>
<RichFiles>2,607</RichFiles>
<Scholar>2,414</Scholar>
</universite_Record>
<universite_Record>
<Num>18</Num>
<University>Kwame Nkrumah University of Science & Technology</University>
<Contry>Gana </Contry>
<WorldRank>2,564</WorldRank>
<Size>2,877</Size>
<Visibilitiy>6,748</Visibilitiy>
<RichFiles>6,471</RichFiles>
<Scholar>673</Scholar>
</universite_Record>
<universite_Record>
<Num>19</Num>
<University>Université Mentouri de Constantine </University>
<Contry>Algeria</Contry>
<WorldRank>2,668</WorldRank>
<Size>3,42</Size>
<Visibilitiy>8,968</Visibilitiy>
<RichFiles>3,501</RichFiles>
<Scholar>1,299</Scholar>
</universite_Record>
<universite_Record>
<Num>20</Num>
<University>University of Ilorin</University>
<Contry>Negeria</Contry>
<WorldRank>2,668</WorldRank>
<Size>4,88</Size>
<Visibilitiy>10,778</Visibilitiy>
<RichFiles>2,866</RichFiles>
<Scholar>907</Scholar>
</universite_Record>
<universite_Record>
<Num>21</Num>
<University>Al Akhawayn University Ifrane</University>
<Contry>Maroco</Contry>
<WorldRank>2,668</WorldRank>
<Size>3,172</Size>
<Visibilitiy>6,247</Visibilitiy>
<RichFiles>1,616</RichFiles>
<Scholar>3,318</Scholar>
</universite_Record>
<universite_Record>
<Num>22</Num>
<University>Polytechnic of Namibia</University>
<Contry>Nambia</Contry>
<WorldRank>2,675</WorldRank>
<Size>13,352</Size>
<Visibilitiy>7,941</Visibilitiy>
<RichFiles>3,099</RichFiles>
<Scholar>1,561</Scholar>
</universite_Record>
<universite_Record>
<Num>23</Num>
<University>Durban University of Technology</University>
<Contry>South of afirca</Contry>
<WorldRank>2,71</WorldRank>
<Size>4,1</Size>
<Visibilitiy>8,344</Visibilitiy>
<RichFiles>4,633</RichFiles>
<Scholar>831</Scholar>
</universite_Record>
<universite_Record>
<Num>24</Num>
<University>University of Khartoum</University>
<Contry>sudan</Contry>
<WorldRank>2,816</WorldRank>
<Size>3,611</Size>
<Visibilitiy>1,101</Visibilitiy>
<RichFiles>9,257</RichFiles>
<Scholar>1,605</Scholar>
</universite_Record>
<universite_Record>
<Num>25</Num>
<University>Cape Peninsula University of Technology</University>
<Contry>South of afirca</Contry>
<WorldRank>2,894</WorldRank>
<Size>6,524</Size>
<Visibilitiy>7,189</Visibilitiy>
<RichFiles>4,362</RichFiles>
<Scholar>790</Scholar>
</universite_Record>
<universite_Record>
<Num>26</Num>
<University>University of Botswana</University>
<Contry>Botswana</Contry>
<WorldRank>2,97</WorldRank>
<Size>3,589</Size>
<Visibilitiy>4,625</Visibilitiy>
<RichFiles>5,659</RichFiles>
<Scholar>1,628</Scholar>
</universite_Record>
<universite_Record>
<Num>27</Num>
<University>University of Nairobi</University>
<Contry>Nairobi</Contry>
<WorldRank>3,136</WorldRank>
<Size>1,976</Size>
<Visibilitiy>4,335</Visibilitiy>
<RichFiles>3,71</RichFiles>
<Scholar>4,382</Scholar>
</universite_Record>
<universite_Record>
<Num>28</Num>
<University>Assiut University</University>
<Contry>Egypte</Contry>
<WorldRank>3,151</WorldRank>
<Size>4,347</Size>
<Visibilitiy>9,489</Visibilitiy>
<RichFiles>3,501</RichFiles>
<Scholar>1,876</Scholar>
</universite_Record>
<universite_Record>
<Num>29</Num>
<University>Faculté des Sciences Rabat</University>
<Contry>Maroco</Contry>
<WorldRank>3,166</WorldRank>
<Size>8,023</Size>
<Visibilitiy>9,763</Visibilitiy>
<RichFiles>2,056</RichFiles>
<Scholar>1,628</Scholar>
</universite_Record>
<universite_Record>
<Num>30</Num>
<University>Université Cheikh Anta Diop de Dakar</University>
<Contry>Senegal</Contry>
<WorldRank>3,247</WorldRank>
<Size>2,55</Size>
<Visibilitiy>4,408</Visibilitiy>
<RichFiles>3,671</RichFiles>
<Scholar>3,72</Scholar>
</universite_Record>
<universite_Record>
<Num>31</Num>
<University>University of Zimbabwe</University>
<Contry>Zimbabwe</Contry>
<WorldRank>3,267</WorldRank>
<Size>3,539</Size>
<Visibilitiy>6,314</Visibilitiy>
<RichFiles>5,746</RichFiles>
<Scholar>1,926</Scholar>
</universite_Record>
<universite_Record>
<Num>32</Num>
<University>Tshwane University of Technology </University>
<Contry>South of afirca</Contry>
<WorldRank>3,289</WorldRank>
<Size>5,559</Size>
<Visibilitiy>5,703</Visibilitiy>
<RichFiles>3,523</RichFiles>
<Scholar>2,372</Scholar>
</universite_Record>
<universite_Record>
<Num>33</Num>
<University>Université Abou Bekr Belkaid Tlemcen</University>
<Contry>Algeria</Contry>
<WorldRank>3,793</WorldRank>
<Size>3,044</Size>
<Visibilitiy>7,66</Visibilitiy>
<RichFiles>3,039</RichFiles>
<Scholar>3,613</Scholar>
</universite_Record>
</universite_Set>

**thelvin** · 28/06/2011, 00h04

D'accord. Alors effectivement c'est pas ce que j'avais dit. Mais ça c'est une question Java, pas XML.

Pour parser des nombres qui utilisent autre chose que le même format que Float.toString(), il faut utiliser un NumberFormat, pas Float.parse().

Ici :

Code Java :

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String sizeString = "1,123";
NumberFormat nf = NumberFormat.getNumberInstance(Locale.US);
float size = nf.parse(sizeString).floatValue();
System.out.println(size);