首先建立一个 拦截器
代码如下 让java 允许跨域请求
@Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { response.setHeader("Access-Control-Allow-Origin", "http://owen.rompy.cn"); response.setHeader("Access-Control-Allow-Methods", "GET,POST"); response.setHeader("Access-Control-Allow-Headers", "Content-Type,XFILENAME,XFILECATEGORY,XFILESIZE"); response.setHeader("Access-Control-Allow-Credentials", "true"); return true; }
切记
response.setHeader("Access-Control-Allow-Origin", "*");
是不可取的因为他和下面那句话会冲突
response.setHeader("Access-Control-Allow-Credentials", "true");
然后 web端的请求 获取不到cookie的原因有可能是ajax没有配置
新增ajax配置,具体配置如下
xhrFields: {
withCredentials: true
},
这个时候 即可读到 相同域名下的cookie了