Springboot support for Ajax cross-domain requests

Using annotations to solve cross-domain problems of AJAX requests

1. Write a Configuration that supports cross-domain requests

-The first way-Corsconfig.java

Importorg.springframework.context.annotation.Configuration;ImportOrg.springframework.web.servlet.config.annotation.CorsRegistry;ImportOrg.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;/*** Handling Ajax requests cross-domain issues *@authorLevin * @time 2017-07-13*/@Configuration Public classCorsconfigextendsWebmvcconfigureradapter {Static FinalString origins[] =NewString[] {"GET", "POST", "PUT", "DELETE" }; @Override Public voidaddcorsmappings (Corsregistry registry) {registry.addmapping ("/**"). Allowedorigins ("*"). Allowcredentials (true). Allowedmethods (Origins). MaxAge (3600); }}

2.HTTP Request Interface

-Hellocontroller.java

@RestController  Public class Hellocontroller {        @Autowired    helloservice helloservice;         = "/test", produces = mediatype.application_json_utf8_value)    public  String query () {         return "Hello";    }}

-Second way (recommended)

PS: First there is a problem, when the server throws 500, there are still cross-domain issues

@SpringBootApplication @componentscan@enablediscoveryclient Public classmanagementapplication { Public Static voidMain (string[] args) {Springapplication.run (managementapplication.class, args); }    Privatecorsconfiguration Buildconfig () {corsconfiguration corsconfiguration=Newcorsconfiguration (); Corsconfiguration.addallowedorigin ("*"); Corsconfiguration.addallowedheader ("*"); Corsconfiguration.addallowedmethod ("*");        Corsconfiguration.addexposedheader (Httpheaderconstant.x_total_count); returncorsconfiguration; }    /*** Cross-domain filter * *@return     */@Bean PublicCorsfilter Corsfilter () {Urlbasedcorsconfigurationsource source=NewUrlbasedcorsconfigurationsource (); Source.registercorsconfiguration ("/**", Buildconfig ());//4        return Newcorsfilter (source); }}

-Index.html

<! DOCTYPE html>$ (document). Ready ( function () {    $ ("button"). Click (function () {        $.ajax ({url:"http://localhost:8080/test", Success:function (Result) {            $ ("#p1"). HTML (result);}        });    } ); </script>
Springboot support for Ajax cross-domain requests