Struts2 + jQuery Autocompletion
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18-09-2019 - |
Question
I used the jQuery autocompletion for my Struts2 application.
Pratically, my action made a list of strings that jQuery use. This is the script:
$().ready(function() {
$("#tag").autocomplete("/myAction/Action", {
multiple : true,
autoFill : true,
minChars:1
});
});
During typing appear the box with the suggestions. The problem is that the box render another value, exactly render the code of my JSP ( links to CSS for the autocomplete plug-in).
How can I solve this?
This is my JSP:
<html>
<head>
<script src="<%=request.getContextPath()%>/scripts/jquery-latest.js"></script>
<link rel="stylesheet" href="<%=request.getContextPath()%>/scripts/main.css" type="text/css" />
<link rel="stylesheet" href="<%=request.getContextPath()%>/scripts/jquery.autocomplete.css" type="text/css" />
<script type="text/javascript" src="<%=request.getContextPath()%>scripts/jquery.bgiframe.min.js"></script>
<script type="text/javascript" src="/<%=request.getContextPath()%>/query.dimensions.js"></script>
<script type="text/javascript" src="<%=request.getContextPath()%>/scripts/jquery.autocomplete.js"></script>
<script type="text/javascript">
$().ready(function() {
$("#tag").autocomplete("/myAction/Action", {
multiple : true,
autoFill : true,
minChars:1
});
});
</script>
</head>
<body>
<s:form action="Action" theme="simple">
<s:iterator value="elencoMateriali" var="asd">
<s:property value="#asd" escape="false"/>
</s:iterator>
<s:textfield id="tag" name="tagField" label="tag" />
</s:form>
</body>
Solution 2
<%@ taglib prefix="s" uri="/struts-tags" %>
<%@ taglib prefix="sx" uri="/struts-dojo-tags" %>
<s:form action="ActionJson" theme="simple">
<s:url id="elencoFuffa" action="ActionJSON"/>
<sx:autocompleter id="autocompleter" name="materiale" loadOnTextChange="true" preload="false" href="%{elencoFuffa}" size="24" loadMinimumCount="1" showDownArrow="false" cssClass="dropDown" onchange="submit();"/>
<s:submit value="Prosegui"/>
<s:property value="luoghiSmaltimento"/>
</s:form>
Now, the Action:
public class Action extends ActionSupport {
private String materiale;
private String luoghi;
private List<String> elencoMateriali;
private Map<String, String> json;
public String execute() throws Exception {
System.out.println("------------------" + materiale);
return SUCCESS;
}
public String getMateriali() throws Exception {
MaterialiDAO dao = new MaterialiDAO();
List<Materiali> toResult = new ArrayList<Materiali>();
toResult = dao.findAll();
elencoMateriali = new ArrayList<String>();
Iterator i = toResult.iterator();
while (i.hasNext()) {
Materiali m = (Materiali) i.next();
elencoMateriali.add(m.getValueNomemateriale());
}
return SUCCESS;
}
public String getJson() throws Exception {
json = new HashMap<String, String>();
if (materiale != null && materiale.length() > 0) {
MaterialiDAO dao = new MaterialiDAO();
List<Materiali> materiali = dao.findByLikeValue(materiale);
for (Materiali m : materiali) {
json.put(m.getValueNomemateriale(), "" + m.getIdMateriali());
}
}
return SUCCESS;
}
public String trovaLuogo() throws Exception {
LuoghismalDAO daoL = new LuoghismalDAO();
MaterialiDAO daoM = new MaterialiDAO();
Materiali m = daoM.findByMaterialiName(materiale);
if (m != null) {
luoghi = m.getLuoghismal().getValueDescrluogo();
return SUCCESS;
} else {
luoghi = "-- Scegliere un materiale --";
return SUCCESS;
}
}
/* Getters and setters */
At the end the struts.xml
<action name="ActionJSON" class="it.action.Action"
method="getJson">
<result type="json">
<param name="root">json</param>
</result>
</action>
OTHER TIPS
I think it's too late for an answer, but the probles is still remaining in Struts2. I have made some modifications to solve such problem:
Copy the jquery.struts2.js file into you js path.
Edit the jquery.struts2.js fil and look for 'success: function(data)' in the handle of the Autocompleter Widget, and replace the function for the next one:
success: function(data) { var x = 0; if (data[o.list] !== null) { var isMap = false; if (!$.isArray(data[o.list])) { isMap = true; } var result = []; $.each(data[o.list], function(j, val) { if (isMap) { result.push({ label: val.replace( new RegExp( "(?![^&;]+;)(?!<[^<>]*)(" + $.ui.autocomplete.escapeRegex(request.term) + ")(?![^<>]*>)(?![^&;]+;)", "gi" ), "<strong>$1</strong>" ), value: val, id: j }); } else { if (o.listkey !== undefined && o.listvalue !== undefined) { result.push({ label: val[o.listvalue].replace( new RegExp( "(?![^&;]+;)(?!<[^<>]*)(" + $.ui.autocomplete.escapeRegex(request.term) + ")(?![^<>]*>)(?![^&;]+;)", "gi" ), "<strong>$1</strong>" ), value: val[o.listvalue], id: val[o.listkey] }); } else { result.push({ label: data[o.list][x].replace( new RegExp( "(?![^&;]+;)(?!<[^<>]*)(" + $.ui.autocomplete.escapeRegex(request.term) + ")(?![^<>]*>)(?![^&;]+;)", "gi" ), "<strong>$1</strong>" ), value: data[o.list][x], id: data[o.list][x] }); } } x++; }); response(result); }
}
Now, if you subscribe a onSelectTopics method on your jsp code, you will have a new item.id element available, so you can set the id value into a hidden o whatever you want.
Now, your autocompleter show a list with the strong word, fills the input with the selection, and mantains the id in a variable you can catch.
Remember to add the modified js in the include header section.