if(req.session.curruser){ console.log(req.session.curruser); // { username: 'mrlog2’, groupid: 1, groupname: ‘杭州某某公司’ } res.locals.curruser = req.session.curruser; //这个出错。提示如下。 };

/Users/rmbp-mrlong/code/node.js/wechatdeve/src/node_modules/express-session/session/memory.js:80 self.sessions[sid] = JSON.stringify(sess);

TypeError: Converting circular structure to JSON at Object.stringify (native) at Object._onImmediate (/Users/rmbp-mrlong/code/node.js/wechatdeve/src/node_modules/express-session/session/memory.js:80:31) at processImmediate [as _immediateCallback] (timers.js:330:15)