In rest message getting {"detail":"JSON parse error - Invalid \\escape: line 11 column 31 (char 359)\nPossible cause: trailing comma."}

[Sowmya20]

Hi,

I am getting {"detail":"JSON parse error - Invalid \\escape: line 11 column 31 (char 359)\nPossible cause: trailing comma."}

error while passing value in rest message.

Workflow script:

var i = new GlideAggregate('sys_user');
var m = '';
var x = mr();
var j = '';

var x = current.variable_pool.select_users_groups.getDisplayValue();
if (x == 'Group') {
j = current.variables.please_enter_the_dl_group_name.u_cn.getDisplayValue();

} else {
j = names();
}

function names() {
var j = [];
var i = new GlideRecord('sys_user');
i.addQuery('sys_id', 'IN', current.variables.username);
i.query();
while (i.next()) {
j.push(i.email.toString());
}
return j;
}

function mr() {
var mrv;
var itemID = current.sys_id;
var ritmGR = new GlideRecord('sc_req_item');
if (ritmGR.get(itemID)) {
mrv = ritmGR.variables.path;
// gs.addInfoMessage("a=" + mrv);
}
m = mrv.path_1;

}

var gr = new GlideRecord('sc_task');
gr.addEncodedQuery('short_descriptionSTARTSWITHNeed access to storage' +'^parent=' + current.sys_id);
gr.query();
if (gr.next()) {
var number = gr.number;
}

var instanceURL = gs.getProperty('glide.servlet.uri');
var callbackUrl = instanceURL + 'api/now/table/sc_task/' + gr.sys_id;
try {
var r = new sn_ws.RESTMessageV2('Ansible-NetworkShareAccess', 'NetworkShareAccess');
r.setStringParameterNoEscape('callbackUrl', callbackUrl);
r.setStringParameterNoEscape('ticketNumber',number);
r.setStringParameterNoEscape('sysId', gr.sys_id);
r.setStringParameterNoEscape('sn_sharePaths', m); // here getting error
r.setStringParameterNoEscape('sn_principalType', current.variable_pool.select_users_groups.getDisplayValue());
r.setStringParameterNoEscape('sn_principal', j);
r.setStringParameterNoEscape('sn_permissionType', current.variable_pool.please_select_the_type_of_access.getDisplayValue());

var response = r.execute();
var responseBody = response.getBody();
var httpStatus = response.getStatusCode();
} catch (ex) {
var message = ex.message;
}

Like this I'm submitting value

Thanks,

Sowmya

[Allen Andreas]

Hi,

Whereever "m" is with your information:

r.setStringParameterNoEscape('sn_sharePaths', m); // here getting error

You'd want to concatenate (add) 2 more slashes to it, so something like:

var m = "\\" + variable_name_here;

For example.

Please mark reply as Helpful/Correct, if applicable. Thanks!

[_ChrisHelming]

The double backslash isn't the issue for the JSON (though it will be because whatever is receiving the info will see it as a single backslash), it's the "\a" in the middle of the line (line 11 column, 31). You need to escape all backslashes as "\\" to prevent the error. E.g., if the path was "\\file\new", the `\n` would get read as a newline.

[_ChrisHelming]

While windows uses backslashes "\" for paths, it's an escape character in Javascript/JSON so you need to escape them to use them. Right now, column 31 is your `\a` and it's trying to read that as a special character that doesn't exist. The error isn't being thrown earlier because the `\\` at the beginning gets read as a single slash and not an escaped letter E.

Try submitting your path as: \\\\eaclab-fs1\\ansible_test

Note that each backslash needs to be escaped with another backslash, so you'll need four of them for the beginning of your network path.

[Sowmya20]

This is the standard format. User will submit the request first  doble slash \\ and next value will be sigle slash \ . Is there a way i can pass the value without this error

[_ChrisHelming]

Yes. You just need to escape the value before sending it. 

Either `JSON.stringify(m);` the value, or use a replace like `m.replace(/\\/g,'\\\\');`