[英]CORS request with AngularJS and Spring
我知道有很多与此类问题有关的信息,但是我阅读的所有解决方案对我而言都不奏效。
因此,我将把代码留在这里,也许您可以弄清楚发生了什么事,因为我要把我的计算机扔进窗户。
我单击一个按钮打到我的其余服务器的Ajax请求时遇到此错误:
XMLHttpRequest cannot load http://localhost:8081/XXXXXXX.
Request header field Access-Control-Allow-Origin is not allowed
by Access-Control-Allow-Headers in preflight response.
当然,我已经在客户端(AngularJS)的请求中添加了标头:
all : function() {
return $http({
method : 'GET',
url : url_base + '/XXXXXXXX',
headers:{
'Access-Control-Allow-Origin': '*',
'Access-Control-Allow-Methods': 'GET, POST, PUT, DELETE, OPTIONS',
'Access-Control-Allow-Headers': 'Content-Type, X-Requested-With',
'X-Random-Header':'123123123'
}
});
}
在服务器端,我在web.xml文件中添加了一个过滤器:
<filter>
<filter-name>CORSFilter</filter-name>
<filter-class>
filters.CORSFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>CORSFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
然后添加一个实现filter接口的类:
package filters;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Component;
@Component
public class CORSFilter implements Filter {
@Override
public void init(FilterConfig arg0) throws ServletException {}
@Override
public void doFilter(ServletRequest req, ServletResponse resp,
FilterChain chain) throws IOException, ServletException {
// TODO Auto-generated method stub
HttpServletResponse response=(HttpServletResponse) resp;
response.setHeader("Access-Control-Allow-Origin", "*");
response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
response.setHeader("Access-Control-Max-Age", "3600");
response.setHeader("Access-Control-Allow-Headers", "x-requested-with");
chain.doFilter(req, resp);
}
@Override
public void destroy() {}
}
过滤器会自动将CORS标头添加到任何响应,因此我将过滤器添加到任何模式。
如您所见,这就是请求和响应标头,它们具有CORS标头,但我不太确定发生了什么。
响应标题
Access-Control-Allow-Headers:x-requested-with
Access-Control-Allow-Methods:POST, GET, OPTIONS, DELETE
Access-Control-Allow-Origin:*
Access-Control-Max-Age:3600
Allow:GET, HEAD, POST, PUT, DELETE, TRACE, OPTIONS, PATCH
Content-Length:0
Date:Sat, 28 Nov 2015 08:48:08 GMT
Server:Apache-Coyote/1.1
**Request Headers**
view source
Accept:*/*
Accept-Encoding:gzip, deflate, sdch
Accept-Language:es-ES,es;q=0.8
Access-Control-Request-Headers:accept, access-control-allow-headers, access-control-allow-methods, access-control-allow-origin, x-random-header
Access-Control-Request-Method:GET
Connection:keep-alive
Host:localhost:8081
Origin:http://127.0.0.1:8080
Referer:http://127.0.0.1:8080/
User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36
我在这里通过Rest Spring API阅读了有关@CorsOrigin
,但我不知道我没有可用的注释,因此未进行编译。 也许我需要向我的POM添加一个新的特定库?
不要在AngularJS的请求中添加任何标题。
只需在您的web.xml中添加此过滤器,它就是一个过滤器: 在这里解释
<filter>
<filter-name>CorsFilter</filter-name>
<filter-class>org.apache.catalina.filters.CorsFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>CorsFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
这将告诉Tomcat允许CORS请求。
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