我已创建了休息网络服务,并希望为CORS启用。 我已将以下代码添加到我的API代码
中package RestClient;
import java.io.IOException;
import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.container.ContainerResponseContext;
import javax.ws.rs.container.ContainerResponseFilter;
import javax.ws.rs.core.MultivaluedMap;
public class CORSResponseFilter
implements ContainerResponseFilter {
public void filter(ContainerRequestContext requestContext, ContainerResponseContext responseContext)
throws IOException {
MultivaluedMap<String, Object> headers = responseContext.getHeaders();
headers.add("Access-Control-Allow-Origin", "*");
headers.add("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT");
headers.add("Access-Control-Allow-Headers", "X-Requested-With, Content-Type, X-Codingpedia");
}
}
为了可访问性,我需要在web.xml文件中设置上面的类。所以这是我的web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1">
<display-name>GenerateToken</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>JAVA WS</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>RestClient</param-value>
</init-param>
<init-param>
<param-name>org.glassfish.jersey.servlet.ContainerResponseFilters</param-name>
<param-value>RestClient.CORSResponseFilter</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>JAVA WS</servlet-name>
<url-pattern>/Test/*</url-pattern>
</servlet-mapping>
<security-constraint>
<web-resource-collection>
<web-resource-name>GenerateToken</web-resource-name>
<url-pattern>/Test/*</url-pattern>
</web-resource-collection>
<user-data-constraint>
<transport-guarantee>CONFIDENTIAL</transport-guarantee>
</user-data-constraint>
</security-constraint>
</web-app>
我只是想知道,我是否为CORS配置了正确的web.xml文件?在我的本地工作,但在我为每个人部署它之前,只是想确保它是否正确。
有人可以就此提出建议吗?
答案 0 :(得分:3)
你不需要这个(它甚至不正确)
<init-param>
<param-name>org.glassfish.jersey.servlet.ContainerResponseFilters</param-name>
<param-value>RestClient.CORSResponseFilter</param-value>
</init-param>
只需在您的过滤器类之上添加@Provider
即可。以下内容将扫描RestClient
所有@Path
和@Provider
类的包,并为您注册。
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>RestClient</param-value>
</init-param>