java - I want to add a header to Http Response, based on the Http Status code in Spring MVC -

-

i have add cache-control headers rest api designed in spring mvc, based on http response code. if response code 200, add header else dont add.

i dont want client cache response, in case not 200.

it's not possible in filters/interceptors, response committed controller, can't change response state.

is there other way add header after controller?

you can extend org.springframework.web.filter.onceperrequestfilter add cache-control header.

public class cachecontrolheaderfilter extends onceperrequestfilter {     @override     protected void dofilterinternal(httpservletrequest request,                                httpservletresponse response, filterchain filterchain) {         // add header here based on response code     } }

declare filter spring bean in configuration. 

<bean id="cachecontrolheaderfilter" class="*.*.cachecontrolheaderfilter" />

plugin filter in web.xml:

<filter>     <filter-name>cachecontrolheaderfilter</filter-name>     <filter-class>org.springframework.web.filter.delegatingfilterproxy</filter-class> </filter>  <filter-mapping>     <filter-name>cachecontrolheaderfilter</filter-name>     <url-pattern>/*</url-pattern> </filter-mapping>

Comments

Post a Comment

Popular posts from this blog

javascript - Chart.js (Radar Chart) different scaleLineColor for each scaleLine -

-
Image
i try , create radar chart using chart.js has various colours each scaleline, or coloured between scalelines. wondering if possible? from: to: i have working graph, though there doesn't seem method change individual scale lines. kind regards leigh you can extend radar chart type this, so chart.types.radar.extend({ name: "radaralt", initialize: function (data) { chart.types.radar.prototype.initialize.apply(this, arguments); var originalscaledraw = this.scale.draw; var ctx = this.chart.ctx; this.scale.draw = function () { var linewidth = this.linewidth; // bypasses line drawing in originalscaledraw this.linewidth = linewidth; originalscaledraw.apply(this, arguments); ctx.linewidth = this.linewidth; var scale = this; // draw chart.helpers.each(scale.ylabels, function (label, index) { // color of ...
Read more

apache - Error with PHP mail(): Multiple or malformed newlines found in additional_header -

-
suddenly have started receiving above error without changes having been made script. host 1and1 (i know...) the script still works fine on different server, , suspicion there must have been server config change has lead this, although hosts plead ignorance. there's no information on above error @ in google can find - have ideas? server running apache if helps. had similar problem. came out of blue. no php code changed. what changed: php upgraded 5.5.25-1 5.5.26. a security risk in php mail() function has been fixed , newlines in additional_headers allowed no more. because newlines mean: starts email message (and surely don't want inject newlines through headers followed evil message). what have worked fine, e.g. having newlines after headers or passing whole message additional_headers , function no more. solution : sanitize headers. no multiple newlines in additional_headers argument. these count "multiple or malformed newlines":...
Read more

android - Go back to previous fragment -

-
btw second fragment. appear once press button in first fragment. in fragment, if press button on phone, go previous fragment. need guys. in advance. public class listalldoctorfragment extends fragment { button close; @nullable @override public view oncreateview(layoutinflater inflater, viewgroup container, bundle savedinstancestate) { view view = inflater.inflate(r.layout.listalldoctor, container,false); close = (button) view.findviewbyid(r.id.button); close.setonclicklistener(new view.onclicklistener() { @override public void onclick(view view) { android.app.fragmentmanager fm = getfragmentmanager(); fragmenttransaction ft = fm.begintransaction(); shit f2 = new shit(); ft.add(r.id.content_frame, f2); ft.addtobackstack(null); ft.commit(); } }); return view; } } assuming want g...
Read more