解决跨域问题

src/main/java/admin/config/ConfigurerAdapter.java

+/*
+ *  Copyright 2019-2020 Zheng Jie
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package admin.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.cors.CorsConfiguration;
+import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
+import org.springframework.web.filter.CorsFilter;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+/**
+ * WebMvcConfigurer
+ *
+ * @date 2018-11-30
+ */
+@Configuration
+@EnableWebMvc
+public class ConfigurerAdapter implements WebMvcConfigurer {
+
+    @Bean
+    public CorsFilter corsFilter() {
+        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
+        CorsConfiguration config = new CorsConfiguration();
+        config.setAllowCredentials(true);
+        config.addAllowedOrigin("*");
+        config.addAllowedHeader("*");
+        config.addAllowedMethod("*");
+        source.registerCorsConfiguration("/**", config);
+        return new CorsFilter(source);
+    }
+}