SpringMVC跨域配置

一：SpringMVC4.x以下，就需要对该请求配置Filter，设置请求头可支持跨域。

 1.web.xml配置

	header
	com.foriseland.fsoa.pay.filter.HeaderFilter


	header
	/*
 -->

3.自定义Filter拦截请求，添加跨域请求支持

package com.foriseland.fsoa.pay.filter;
 
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;
 
/**
 * 头部过滤器
 * @author 
 */
public class HeaderFilter implements Filter{
 
	public void destroy() {
		
	}
 
	public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
			throws IOException, ServletException {
		HttpServletRequest request = (HttpServletRequest)req;
		HttpServletResponse response = (HttpServletResponse) res;
		String originHeader = request.getHeader("Origin");
		response.setHeader("Access-Control-Allow-Origin", originHeader);
		response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");  
		response.setHeader("Access-Control-Max-Age", "0");  
		response.setHeader("Access-Control-Allow-Headers", "Origin, No-Cache, X-Requested-With, If-Modified-Since, Pragma, Last-Modified, Cache-Control, Expires, Content-Type, X-E4M-With,userId,token");  
		response.setHeader("Access-Control-Allow-Credentials", "true");  
		response.setHeader("XDomainRequestAllowed","1");   
		response.setHeader("XDomainRequestAllowed","1");   
        chain.doFilter(request, response);  
	}
 
	public void init(FilterConfig arg0) throws ServletException {
		
	}
}

二、SpringMVC4.x以上，从SpringMVC4.x开始，就增加了支持跨域访问。 

1、某个方法支持跨域访问：在方法上增加@CrossOrigin注解

@RequestMapping("/crossDomain2")  
@ResponseBody  
@CrossOrigin  
public String crossDomain2(HttpServletRequest req, HttpServletResponse res, String name){  
    ……  
    ……  
}  

2、整个Controller都支持跨域访问，在类上面加上注解@CrossOrigin

@Controller  
@CrossOrigin  
public class TestController {  
    ……  
    ……  
}  

3.自定义规则支持全局跨域访问，在spring-mvc.xml文件中配置映射路径

如果整个项目所有方法都可以访问，则可以这样配置

    
        
  

/**
其中* 表示匹配到下一层

** 表示后面不管有多少层，都能匹配。
**/

上面表示有/cross/路径的请求都支持跨域访问，也可以增加其它的，如下：

请求路径有/cross/，方法示例如下：

@RequestMapping("/cross/crossDomain")  
@ResponseBody  
public String crossDomain(HttpServletRequest req, HttpServletResponse res, String name){  
    ……  
    ……  
}