首先我在vue.config.js 加上了devServermodule.exports = {    configureWebpack: config => {              },      devServer:{        proxy: {            "/api": {              target: "http://localhost:3000",            }          }      }  } 首先我用axios請求POSTaddUser:function () {      axios.post('/api/reguser?name=sds&password=2&age=1&sex=man&company=ali')      .then(function (response) {        console.log(response);      })      .catch(function (error) {        console.log(error);      });    }    然后我用Servlet的req.getParameter的方法獲取前端傳來的POST字段！我可以正常接受！然后我對數(shù)據(jù)做了封裝！addUser:function () {          axios.post('/api/reguser',{              data          })          .then(function (response) {            console.log(response);          })          .catch(function (error) {            console.log(error);          });        }    那么出現(xiàn)了一個問題就是axios會把data放在請求的body中，我后臺獲取不到這樣的數(shù)據(jù)了并且前端會報錯誤xhr.js?b50d:178 POST http://localhost/api/reguser 500 (Internal Server Error)dispatchXhrRequest @ xhr.js?b50d:178xhrAdapter @ xhr.js?b50d:12dispatchRequest @ dispatchRequest.js?5270:59Promise.then (async)request @ Axios.js?0a06:51Axios.<computed> @ Axios.js?0a06:71wrap @ bind.js?1d2b:9REGUSER @ store.js?c0d6:14wrappedMutationHandler @ vuex.esm.js?2f62:725commitIterator @ vuex.esm.js?2f62:391(anonymous) @ vuex.esm.js?2f62:390于是我查了相關問題，順利的解決了后端接受不到json對象的問題StringBuilder builder = new StringBuilder();        try {            BufferedReader bufferedReader = req.getReader();            char[] buff = new char[1024];            int len;            while((len = bufferedReader.read(buff)) != -1){                builder.append(buff,0,len);            }        }catch (IOException e){            System.out.println(e);        }但是我前端每次請求都會報錯POST http://localhost/api/reguser 500 (Internal Server Error)但是后端能正常的接受到數(shù)據(jù){"data":{"name":"23","password":"23","age":"23","sex":"男","company":"23"}}所以我很困惑為什么會這樣呢？