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我有一些麻烦试图更新一些数据,我面临着一些例外情况时更新文本框时...Struts2的:麻烦迭代
我读了Struts 2 nesting iterators和应用的修改,但它不工作...
这里的Java类:
public class Epreuveevb implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
private int idEpreuve;
private String nom;
private int coef;
private int note;
private int idExamen;
/* all setters and getters */
然后第二:
public class Examenevb implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
private int idJury;
private String nom;
private String prenom;
private List<Epreuveevb> listeEpreuves = null;
/* all setters and getters */
最后,这是最高的类(使用Servlet):
public class Saisie extends ActionSupport {
static final Logger log = LogManager.getLogger(Saisie.class);
private int idJury;
private Jury leJury;
private List<Examenevb> lesExamens;
[...]
public List<Examenevb> getLesExamens() {
return lesExamens;
}
public void setLesExamens(List<Examenevb> lesExamens) {
this.lesExamens = lesExamens;
}
现在JSP:
<s:form theme="simple" action="relevernote">
<table class="notation">
<tbody>
<s:iterator value="lesExamens" status="examstat">
<tr>
<td class="default"><span class="gras">${nom}</span>, ${prenom}</td>
<s:iterator value="listeEpreuves" status="eprstat">
<td>
${nom}<br/>
<s:textfield name="lesExamens[%{#examstat.index}].listeEpreuves[%{#eprstat.index}].note"/>
<p> </p>
</td>
</s:iterator>
</tr>
</s:iterator>
</tbody>
</table>
<p> </p>
<p class="center"><s:submit value="Valider"/></p>
</s:form>
一切都很好,所有的标记是正确的文本字段。对于例如,这是最终的HTML页面:
<td class="default"><span class="gras">EL MORABIT</span>, MOHAMED</td>
<td>
Maths<br/>
<input type="text" name="lesExamens[0].listeEpreuves[0].note" value="0" id="relevernote_lesExamens_0__listeEpreuves_0__note"/>
<p> </p>
</td>
但提交的时候,我看到日志:
2017-05-16 17:29:44,910 ERROR com.opensymphony.xwork2.interceptor.ParametersInterceptor [notifyDeveloperParameterException] Developer Notification (set struts.devMode to false to disable this message):
Unexpected Exception caught setting 'lesExamens[0].listeEpreuves[0].note' on 'class evb.pg.notation.Saisie: Error setting expression 'lesExamens[0].listeEpreuves[0].note' with value ['0', ]
2017-05-16 17:29:44,914 ERROR com.opensymphony.xwork2.interceptor.ParametersInterceptor [notifyDeveloperParameterException] Developer Notification (set struts.devMode to false to disable this message):
Unexpected Exception caught setting 'lesExamens[0].listeEpreuves[1].note' on 'class evb.pg.notation.Saisie: Error setting expression 'lesExamens[0].listeEpreuves[1].note' with value ['0', ]
什么错?任何想法 ?
我多次检查制定者/吸气,一切都很好...
我改变了Examenevb类,我删除了“private List listeEpreuves = null;”并用“private List listeEpreuves”替换它。 不幸的是,错误仍然存在... –
确保你有正确的getters和setters –
你好Roman,我只检查了所有setters和getters,一切都很好。 但是,我正在阅读一本关于Struts2的书。我可能找到了一个解决方案:使用Preparable接口。希望我会解决这个问题...... –