1回答

• 

  Qiaogh

  2020-11-22 13:11:59

  我觉得这个没有什么可纠结吧，每个人可以自己的逻辑，老师讲的是他自己的逻辑，最终结果一样应该就行，比如我自己写的就跟老师的不同。重在理解吧

  const http = require('http');
  const fs = require('fs');
  const querystring = require('querystring');
  
  const registeredUserInfos = {};
  http.createServer((req, resp) => {
      if (req.method == 'GET') {
          fs.readFile(`./${req.url}`, (err, data) => {
              if (err) {
                  resp.writeHead(404);
                  resp.end('Page not found.');
              } else {
                  resp.end(data);
              }
          });
      } else if (req.method == 'POST') {
          let data = [];
          
          req.on('data', (chunk) => {
              data += chunk;
          });
          
          req.on('end', () => {
              let params = querystring.parse(data);
              if (params.action == 'reg') {
                  if (registeredUserInfos[params.username]) {
                      resp.writeHead(500);
                      resp.end('Invalid user account, Please choose other to try.');
                  else {
                      registeredUserInfos[params.username] = params;
                      resp.end('Registered successfully!');
                  }
              } else if (params.action == 'login') {
                  if (!registeredUserInfos[params.username]) {
                      resp.writeHead(500);
                      resp.end('Invalid user account, Please choose other to try.');
                  } else {
                      let userinfo = registeredUserInfos[params.username];
                      if (params.password == userinfo.password) {
                          resp.end('Login successfully');
                      } else {
                          resp.end('Invalid user password, Please choose other to try.');
                      }
                  }
              } else {
                  resp.writeHead(500);
                  resp.end('Invalid action, Please choose other to try.');
              }
          });
      }
  }).listen(3000);

  
  

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