调整跨域配置，更新README.md

Author: dolyw

README.md

@@ -7,11 +7,11 @@
 
 > 前端地址:[https://github.com/wang926454/VueStudy/tree/master/VueStudy08-JWT](https://github.com/wang926454/VueStudy/tree/master/VueStudy08-JWT)
 
-#### Issues
+#### 疑问查看
 
 1. [#14 重复请求会不会生成多个token](https://github.com/dolyw/ShiroJwt/issues/14)
 2. [#19 跨域sso问题](https://github.com/dolyw/ShiroJwt/issues/19)
-3. [#22 如果是微服务的话，是不是每个微服务都的写一套这样的shiro?](https://github.com/dolyw/ShiroJwt/issues/22)
+3. [#29 Token刷新并发处理](https://github.com/dolyw/ShiroJwt/issues/29)
 
 <img src="https://cdn.jsdelivr.net/gh/wliduo/CDN@master/feed/qq.png" height="180"></img>
 

src/main/java/com/wang/config/OriginFilter.java

@@ -0,0 +1,37 @@
+package com.wang.config;
+
+import org.apache.shiro.web.util.WebUtils;
+import org.springframework.stereotype.Component;
+
+import javax.servlet.*;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+/**
+ * 全局跨域放开
+ *
+ * @author wliduo[[email protected]]
+ * @date 2019/11/26 14:29
+ */
+@Component
+public class OriginFilter implements Filter {
+
+    @Override
+    public void init(FilterConfig filterConfig) throws ServletException { }
+
+    @Override
+    public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain) throws IOException, ServletException {
+        HttpServletRequest httpServletRequest = WebUtils.toHttp(request);
+        HttpServletResponse httpServletResponse = WebUtils.toHttp(response);
+        httpServletResponse.setHeader("Access-Control-Allow-Methods", "GET,POST,OPTIONS,PUT,DELETE");
+        httpServletResponse.setHeader("Access-Control-Max-Age", "3600");
+        httpServletResponse.setHeader("Access-control-Allow-Origin", httpServletRequest.getHeader("Origin"));
+        httpServletResponse.setHeader("Access-Control-Allow-Headers", httpServletRequest.getHeader("Access-Control-Request-Headers"));
+        filterChain.doFilter(request, response);
+    }
+
+    @Override
+    public void destroy() { }
+
+}

src/main/java/com/wang/config/WebMvcConfig.java

@@ -133,7 +133,8 @@ protected boolean executeLogin(ServletRequest request, ServletResponse response)
      */
     @Override
     protected boolean preHandle(ServletRequest request, ServletResponse response) throws Exception {
-        HttpServletRequest httpServletRequest = WebUtils.toHttp(request);
+        // 跨域已经在OriginFilter处全局配置
+        /*HttpServletRequest httpServletRequest = WebUtils.toHttp(request);
         HttpServletResponse httpServletResponse = WebUtils.toHttp(response);
         httpServletResponse.setHeader("Access-control-Allow-Origin", httpServletRequest.getHeader("Origin"));
         httpServletResponse.setHeader("Access-Control-Allow-Methods", "GET,POST,OPTIONS,PUT,DELETE");
@@ -142,7 +143,7 @@ protected boolean preHandle(ServletRequest request, ServletResponse response) th
         if (httpServletRequest.getMethod().equals(RequestMethod.OPTIONS.name())) {
             httpServletResponse.setStatus(HttpStatus.OK.value());
             return false;
-        }
+        }*/
         return super.preHandle(request, response);
     }