前后端分离ssm配置跨域

前后端分离开发需要跨域，之前只会pringboot跨域，只需要一个配置类即可，下面记录一下ssm的配置

三个文件需要添加配置

SimpleCORSFilter.java实现Filter

public class SimpleCORSFilter implements Filter {    private boolean isCross = false;    @Override    public void destroy() {        isCross = false;    }    @Override    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)            throws IOException, ServletException {        if (isCross) {            HttpServletRequest httpServletRequest = (HttpServletRequest) request;            HttpServletResponse httpServletResponse = (HttpServletResponse) response;            System.out.println("拦截请求: " + httpServletRequest.getServletPath());            httpServletResponse.setHeader("Access-Control-Allow-Origin", "*");            httpServletResponse.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");            httpServletResponse.setHeader("Access-Control-Max-Age", "0");            httpServletResponse.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");            httpServletResponse.setHeader("Access-Control-Allow-Credentials", "true");            httpServletResponse.setHeader("XDomainRequestAllowed", "1");        }        chain.doFilter(request, response);    }    @Override    public void init(FilterConfig filterConfig) throws ServletException {        String isCrossStr = filterConfig.getInitParameter("IsCross");        isCross = isCrossStr.equals("true") ? true : false;        System.out.println(isCrossStr);    }

dispatcher-servlet.xml(springMVC的配置文件)

<!--     接口跨域配置-->    <mvc:cors>        <mvc:mapping path="/**"                     allowed-origins="*"                     allowed-methods="POST, GET, OPTIONS, DELETE, PUT"                     allowed-headers="Content-Type, Access-Control-Allow-Headers, Authorization, X-Requested-With"                     allow-credentials="true" />    </mvc:cors>    

## web.xml

     <!-- 跨域请求 -->  <filter>    <filter-name>SimpleCORSFilter</filter-name>    <filter-class>com.maxcore.config.SimpleCORSFilter</filter-class>    <init-param>      <param-name>IsCross</param-name>      <param-value>true</param-value>    </init-param>  </filter>  <filter-mapping>    <filter-name>SimpleCORSFilter</filter-name>    <url-pattern>/*</url-pattern>  </filter-mapping>

## 完毕

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