解決Access-Control-Allow-Origin跨域問題
阿新 • • 發佈:2020-09-07
說明:本次的測試環境是一臺電腦,啟動兩個springboot應用,如果是其它情況,可能稍有不同,發現時在補充吧。
方法一:給response設定header
public User getUser(HttpServletResponse response) { response.setHeader("Access-Control-Allow-Origin","*"); User user = new User(1,"張三",20); return user; }
方法二:添加註解,如果新增到類上,那麼整個類中的方法都可以跨域訪問
@CrossOrigin publicUser getUser2(HttpServletResponse response) { User user = new User(2,"李四",20); return user; }
方法三:在攔截器中設定response的header,以下是springboot中的寫法
public class WebInterceptor implements HandlerInterceptor{
@Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)throws Exception { response.setHeader("Access-Control-Allow-Origin","*"); return true; } }
@Configuration public class MyWebMvcConfigurer implements WebMvcConfigurer{ @Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(new WebInterceptor()); } }