新增maven包依賴

<dependency>
	<groupId>com.thetransactioncompany</groupId>
	<artifactId>cors-filter</artifactId>
	<version>2.6</version>
</dependency>

建立CorsConfig.java 

@Configuration
public class CorsConfig {

	@Bean
	public FilterRegistrationBean corsFilter() {
		Properties props = new Properties();
		props.setProperty("cors.allowGenericHttpRequests", "true");
		props.setProperty("cors.allowOrigin", "*");
		props.setProperty("cors.allowSubdomains", "true");
		props.setProperty("cors.supportedMethods", "GET, HEAD, POST, OPTIONS");
		props.setProperty("cors.supportedHeaders", "*");
		props.setProperty("cors.supportsCredentials", "true");
		props.setProperty("cors.maxAge", "3600");
		CORSConfiguration config = null;
		try {
			config = new CORSConfiguration(props);
		} catch (CORSConfigurationException e) {
			e.printStackTrace();
		}
		FilterRegistrationBean bean = new FilterRegistrationBean(new CORSFilter(config));
		bean.setOrder(0);
		return bean;
	}
}