我在清除autoComplete Textfield的输入时遇到问题。出于某种原因我无论何时调用target.add（引用AutoCompleteTextField）;
我的输入值为空...
基本上，我可以清除输入存储的引用字符串，但每次调用ajaxupdate时它都为空。
我尝试了ajaxButton和AjaxSubmitLink。两者都得到了相同的反应。我有一个按钮来提交textField的输入。
代码：
<form wicket:id="autoCompleteForm">
<td><input wicket:id="autoCompleteTextField" size="20"/></td>
<td><button width:100px wicket:id="selectRoleBtn">Select</button></td>
</form>
private void autoCompleteForm()
{
findRoleForm = new Form<Void>("autoCompleteForm");
findRoleForm.setOutputMarkupId(true);
addOrReplace(findRoleForm);
field = new AutoCompleteTextField<String>("autoCompleteTextField",
new PropertyModel<String>(this,"autoString"))
{
@Override
protected Iterator<String> getChoices(String input)
{
if (Strings.isEmpty(input))
{
List<String> emptyList = Collections.emptyList();
return emptyList.iterator();
}
List<String> choices = new ArrayList<String>(10);
for (final Role role : rolesList)
{
final String roles = role.getRoleName();
if (roles.toUpperCase().startsWith(input.toUpperCase()))
{
choices.add(roles);
if (choices.size() == 10)
{
break;
}
}
}
return choices.iterator();
}
};
findRoleForm.addOrReplace(field);
findRoleForm.addOrReplace(new AjaxSubmitLink("selectRoleBtn", findRoleForm)
{
protected void onSubmit(AjaxRequestTarget target, Form<?> form)
{
System.out.println("here1" + autoString);
if(rolesList != null && autoString!= null)
{
if(rolesList .size() != 0)
{
for(int i=0; i < rolesList .size(); i++)
{
System.out.println("here2" + autoString);
if(rolesList .get(i).getRoleName().equals(autoString))
{
role = rolesList.get(i);
roleInformation.addOrReplace(new Label("roleNameTxt", role.getRoleName()));
roleInformation.addOrReplace(new Label("roleAliasTxt", role.getRoleAlias()));
roleInformation.addOrReplace(new Label("roleOwnerTxt", role.getRoleOwnerId()));
roleInformation.addOrReplace(new Label("roleStatusTxt", role.getRoleAccessStatus()));
roleInformation.addOrReplace(new Label("roleCategoryTxt", role.getRoleCategoryName()));
roleInformation.addOrReplace(new Label("roleDescriptionTxt", role.getRoleDescription()));
roleInformation.addOrReplace(new Label("roleValidityTxt", role.getRoleValidityStatus()));
roleInformation.addOrReplace(new Label("roleNumUsers", ""));
//add adOrReplace(findRoleForm);
autoString = "";
target.add(field);
target.add(roleInformation);
currentRoleSelection = null;
target.add(rolesDropDownChoice);
break;
}
}
}
}
}
}).add(getIndicatorAppender());
}
编辑： autoCompleteTextField输入字段第一次清除，但是当我再次尝试时。字符串：autoString将为null。因此，如果您在第一次尝试时选择了您的选择（从提供的搜索列表中），点击选择按钮，它会为您提供正确的字符串并清除。但是当你第二次这样做，选择一个提供的值时，“autoString”将为null ..并且不会获得分配给它的输入值。
答案 0 :(得分：0)
你能更恰当地描述你的问题吗？
我必须修改你的代码才能编译
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.markup.html.form.AjaxSubmitLink;
import org.apache.wicket.extensions.ajax.markup.html.autocomplete.AutoCompleteTextField;
import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.model.PropertyModel;
import org.apache.wicket.util.string.Strings;
public class AutoTestPage2 extends WebPage {
Form<Void> findRoleForm;
AutoCompleteTextField field;
List<Role> rolesList = new LinkedList<AutoTestPage2.Role>();
String autoString;
public AutoTestPage2() {
super();
autoCompleteForm();
}
private void autoCompleteForm() {
rolesList.add(new Role("Adam"));
rolesList.add(new Role("Boris"));
rolesList.add(new Role("Clair"));
findRoleForm = new Form<Void>("autoCompleteForm");
findRoleForm.setOutputMarkupId(true);
add(findRoleForm);
field = new AutoCompleteTextField<String>("autoCompleteTextField",
new PropertyModel<String>(this, "autoString")) {
@Override
protected Iterator<String> getChoices(final String input) {
if (Strings.isEmpty(input)) {
final List<String> emptyList = Collections.emptyList();
return emptyList.iterator();
}
final List<String> choices = new ArrayList<String>(10);
for (final Role role : rolesList) {
final String roles = role.getName();
if (roles.toUpperCase().startsWith(input.toUpperCase())) {
choices.add(roles);
if (choices.size() == 10) {
break;
}
}
}
return choices.iterator();
}
};
findRoleForm.addOrReplace(field);
findRoleForm.addOrReplace(new AjaxSubmitLink("selectRoleBtn", findRoleForm) {
@Override
protected void onSubmit(final AjaxRequestTarget target, final Form<?> form) {
System.out.println("here1" + autoString);
if (rolesList != null && autoString != null) {
if (rolesList.size() != 0) {
for (int i = 0; i < rolesList.size(); i++) {
System.out.println("here2" + autoString);
if (rolesList.get(i).getName().equals(autoString)) {
final Role role = rolesList.get(i);
// roleInformation.addOrReplace(new Label("roleNameTxt", role.getName()));
//add adOrReplace(findRoleForm);
autoString = "";
target.add(field);
// target.add(roleInformation);
// currentRoleSelection = null;
// target.add(rolesDropDownChoice);
break;
}
}
}
}
}
})/* .add(getIndicatorAppender()) */;
// add(findRoleForm);
}
class Role implements Serializable {
String name;
public Role(final String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setName(final String name) {
this.name = name;
}
}
}
当我按下select时，文本字段被清除，控制台中有两条消息
here1Adam
here2Adam
答案 1 :(得分：0)
我能够通过将其他组件放在与autoCompleteTextField相同的表单中来解决这个问题，无论出于何种原因，当重新呈现它们并且它们在表单内时...它会纠正问题。