使用CORS实现JavaWeb跨域请求问题的方法

之前用jsonp 解决跨域问题，现在用cors实现跨域请求解决java 跨域问题：

主要代码如下

package com.hy.fliter;
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.httpservletrequest;
import javax.servlet.http.httpservletresponse;
import org.apache.commons.httpclient.httpstatus;
/**
* created by wangshuai on 2016/7/30.
*/
public class corsfilter implements filter {
@override
public void init(filterconfig filterconfig) throws servletexception { }
@override
public void dofilter(servletrequest servletrequest, servletresponse servletresponse, filterchain filterchain) throws ioexception, servletexception {
httpservletresponse response = (httpservletresponse) servletresponse;
httpservletrequest request = (httpservletrequest) servletrequest;
// 指定允许其他域名访问
response.setheader("access-control-allow-origin", "*");
// 响应类型
response.setheader("access-control-allow-methods", "post, get, delete, options, delete");
// 响应头设置
response.setheader("access-control-allow-headers", "content-type, x-requested-with, x-custom-header, haiyi-access-token");
if ("options".equals(request.getmethod())){
response.setstatus(httpstatus.sc_no_content);
}
filterchain.dofilter(servletrequest, servletresponse);
}
@override
public void destroy() { }
}

web.xml 代码如下配置

<filter>
<filter-name>cors</filter-name>
<filter-class>com.hy.fliter.corsfilter</filter-class>
</filter>
<filter-mapping>
<filter-name>cors</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

以上所述是小编给大家介绍的使用cors实现javaweb跨域请求问题的方法，希望对大家有所帮助