java - Uncaught SyntaxError: Unexpected token < -


i using ajaxupload.js here , see file doing upload work alright. getting <pre style="word-wrap: break-word; white-space: pre-wrap;">{"id":"006","path":"006.png"}</pre> in response.

i think response should {"id":"006","path":"006.png"} reasons got wrapped around <pre> , hence uncaught syntaxerror: unexpected token <.

i using spring mvc 3, tomcat. using java.io.writer write response writer.write(json.tostring());

could me understand error , how resolve it?

thanks.

update:

code:

<form id="app-form" class="cols" action="#" method="post">     <fieldset class="w50">                                       <!--  set of form fields -->     </fieldset>        <fieldset class="w50">                                       <button id="uploadbutton" class="csbutton-grey" >upload</button>         <ul id="locationimages"></ul>     </fieldset> <div style="float: left;">     <button type="submit" class="cool-button">submit</button> </div> </form>   $(document).ready(function(){     var button = $('#uploadbutton'), interval;      new ajaxupload(button, {         action: 'uploadimage',          name: 'qqfile',         responsetype: "json",         onsubmit : function(file, ext){             this.disable();             console.log("file - " + file);             console.log("ext - " + ext);             if (! (ext && /^(jpg|png|jpeg|gif)$/.test(ext))){                 alert('error: invalid file extension');                 return false;              }             else {                 $.ajax({                     type:"get",                     url:"file",                     data:'file='+file,                     success:function(data, textstatus, jqxhr){                         console.log(jqxhr.status);                         console.log(data);                     },                     error:function(jqxhr, textstatus, errorthrown) {                         console.log(jqxhr.status);                     },                 });                              }         },         oncomplete: function(file, response){             this.enable();             console.log("file - " + file);             console.log("response.id - " + response.id + ", response.path - " + response.path);             $('<li></li>').appendto('#locationimages').text(file);                               }     });  });

have set responsetype property json in ajaxupload?


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