在此处阅读有关您的问题的 CORS:http ://enable-cors.org/
检查这是否对您的 getMsg() 方法有帮助:
return Response.ok(output).header("Access-Control-Allow-Origin", "*").build();
如果上述方法不起作用,请尝试将 Jersey 过滤器添加到您的服务中。创建过滤器类:
package your.package;
public class CORSFilter implements ContainerResponseFilter {
@Override
public ContainerResponse filter(ContainerRequest creq, ContainerResponse cresp) {
cresp.getHttpHeaders().putSingle("Access-Control-Allow-Origin", "*");
cresp.getHttpHeaders().putSingle("Access-Control-Allow-Credentials", "true");
cresp.getHttpHeaders().putSingle("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT, OPTIONS, HEAD");
cresp.getHttpHeaders().putSingle("Access-Control-Allow-Headers", "Content-Type, Accept, X-Requested-With");
return cresp;
}
}
并稍后注册 win web.xml:
<servlet>
<servlet-name>CORS Filter</servlet-name>
<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>com.sun.jersey.spi.container.ContainerResponseFilters</param-name>
<param-value>your.package.CORSFilter</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>CORS Filter</servlet-name>
<url-pattern>/webservices/*</url-pattern>
</servlet-mapping>
另一种解决方案是在资源中使用此代码
OPTIONS
为浏览器提供服务。把它放在你有@GET 的类中。
@OPTIONS
@Path("/getsample")
public Response getOptions() {
return Response.ok()
.header("Access-Control-Allow-Origin", "*")
.header("Access-Control-Allow-Methods", "POST, GET, PUT, UPDATE, OPTIONS")
.header("Access-Control-Allow-Headers", "Content-Type, Accept, X-Requested-With").build();
}
如果这不起作用,请尝试将
"*"
提供的“Access-Control-Allow-Origin”标头与您访问此资源的自定义域交换。Ig 如果您
http://localhost::8080
使用类似这样的东西
("Access-Control-Allow-Origin", "http://localhost:8080")
而不是星号来调用它
"*"
。