获取请求体中json数据并解析到实体对象

目录

相关依赖

前端代码

后端代码

测试结果

---

相关依赖

	com.alibaba
	fastjson
	1.2.83

	commons-io
	commons-io
	2.13.0

前端代码

axios.js

/* axios v0.18.0 | (c) 2018 by Matt Zabriskie */
!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.axios=t():e.axios=t()}(this,function(){return function(e){function t(r){if(n[r])return n[r].exports;var o=n[r]={exports:{},id:r,loaded:!1};return e[r].call(o.exports,o,o.exports,t),o.loaded=!0,o.exports}var n={};return t.m=e,t.c=n,t.p="",t(0)}([function(e,t,n){e.exports=n(1)},function(e,t,n){"use strict";function r(e){var t=new s(e),n=i(s.prototype.request,t);return o.extend(n,s.prototype,t),o.extend(n,t),n}var o=n(2),i=n(3),s=n(5),u=n(6),a=r(u);a.Axios=s,a.create=function(e){return r(o.merge(u,e))},a.Cancel=n(23),a.CancelToken=n(24),a.isCancel=n(20),a.all=function(e){return Promise.all(e)},a.spread=n(25),e.exports=a,e.exports.default=a},function(e,t,n){"use strict";function r(e){return"[object Array]"===R.call(e)}function o(e){return"[object ArrayBuffer]"===R.call(e)}function i(e){return"undefined"!=typeof FormData&&e instanceof FormData}function s(e){var t;return t="undefined"!=typeof ArrayBuffer&&ArrayBuffer.isView?ArrayBuffer.isView(e):e&&e.buffer&&e.buffer instanceof ArrayBuffer}function u(e){return"string"==typeof e}function a(e){return"number"==typeof e}function c(e){return"undefined"==typeof e}function f(e){return null!==e&&"object"==typeof e}function p(e){return"[object Date]"===R.call(e)}function d(e){return"[object File]"===R.call(e)}function l(e){return"[object Blob]"===R.call(e)}function h(e){return"[object Function]"===R.call(e)}function m(e){return f(e)&&h(e.pipe)}function y(e){return"undefined"!=typeof URLSearchParams&&e instanceof URLSearchParams}function w(e){return e.replace(/^\s*/,"").replace(/\s*$/,"")}function g(){return("undefined"==typeof navigator||"ReactNative"!==navigator.product)&&("undefined"!=typeof window&&"undefined"!=typeof document)}function v(e,t){if(null!==e&&"undefined"!=typeof e)if("object"!=typeof e&&(e=[e]),r(e))for(var n=0,o=e.length;n
 * @license  MIT
 */
    e.exports=function(e){return null!=e&&(n(e)||r(e)||!!e._isBuffer)}},function(e,t,n){"use strict";function r(e){this.defaults=e,this.interceptors={request:new s,response:new s}}var o=n(6),i=n(2),s=n(17),u=n(18);r.prototype.request=function(e){"string"==typeof e&&(e=i.merge({url:arguments[0]},arguments[1])),e=i.merge(o,{method:"get"},this.defaults,e),e.method=e.method.toLowerCase();var t=[u,void 0],n=Promise.resolve(e);for(this.interceptors.request.forEach(function(e){t.unshift(e.fulfilled,e.rejected)}),this.interceptors.response.forEach(function(e){t.push(e.fulfilled,e.rejected)});t.length;)n=n.then(t.shift(),t.shift());return n},i.forEach(["delete","get","head","options"],function(e){r.prototype[e]=function(t,n){return this.request(i.merge(n||{},{method:e,url:t}))}}),i.forEach(["post","put","patch"],function(e){r.prototype[e]=function(t,n,r){return this.request(i.merge(r||{},{method:e,url:t,data:n}))}}),e.exports=r},function(e,t,n){"use strict";function r(e,t){!i.isUndefined(e)&&i.isUndefined(e["Content-Type"])&&(e["Content-Type"]=t)}function o(){var e;return"undefined"!=typeof XMLHttpRequest?e=n(8):"undefined"!=typeof process&&(e=n(8)),e}var i=n(2),s=n(7),u={"Content-Type":"application/x-www-form-urlencoded"},a={adapter:o(),transformRequest:[function(e,t){return s(t,"Content-Type"),i.isFormData(e)||i.isArrayBuffer(e)||i.isBuffer(e)||i.isStream(e)||i.isFile(e)||i.isBlob(e)?e:i.isArrayBufferView(e)?e.buffer:i.isURLSearchParams(e)?(r(t,"application/x-www-form-urlencoded;charset=utf-8"),e.toString()):i.isObject(e)?(r(t,"application/json;charset=utf-8"),JSON.stringify(e)):e}],transformResponse:[function(e){if("string"==typeof e)try{e=JSON.parse(e)}catch(e){}return e}],timeout:0,xsrfCookieName:"XSRF-TOKEN",xsrfHeaderName:"X-XSRF-TOKEN",maxContentLength:-1,validateStatus:function(e){return e>=200&&e<300}};a.headers={common:{Accept:"application/json, text/plain, 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encodeURIComponent(e).replace(/%40/gi,"@").replace(/%3A/gi,":").replace(/%24/g,"$").replace(/%2C/gi,",").replace(/%20/g,"+").replace(/%5B/gi,"[").replace(/%5D/gi,"]")}var o=n(2);e.exports=function(e,t,n){if(!t)return e;var i;if(n)i=n(t);else if(o.isURLSearchParams(t))i=t.toString();else{var s=[];o.forEach(t,function(e,t){null!==e&&"undefined"!=typeof e&&(o.isArray(e)?t+="[]":e=[e],o.forEach(e,function(e){o.isDate(e)?e=e.toISOString():o.isObject(e)&&(e=JSON.stringify(e)),s.push(r(t)+"="+r(e))}))}),i=s.join("&")}return i&&(e+=(e.indexOf("?")===-1?"?":"&")+i),e}},function(e,t,n){"use strict";var r=n(2),o=["age","authorization","content-length","content-type","etag","expires","from","host","if-modified-since","if-unmodified-since","last-modified","location","max-forwards","proxy-authorization","referer","retry-after","user-agent"];e.exports=function(e){var t,n,i,s={};return e?(r.forEach(e.split("\n"),function(e){if(i=e.indexOf(":"),t=r.trim(e.substr(0,i)).toLowerCase(),n=r.trim(e.substr(i+1)),t){if(s[t]&&o.indexOf(t)>=0)return;"set-cookie"===t?s[t]=(s[t]?s[t]:[]).concat([n]):s[t]=s[t]?s[t]+", "+n:n}}),s):s}},function(e,t,n){"use strict";var r=n(2);e.exports=r.isStandardBrowserEnv()?function(){function e(e){var t=e;return n&&(o.setAttribute("href",t),t=o.href),o.setAttribute("href",t),{href:o.href,protocol:o.protocol?o.protocol.replace(/:$/,""):"",host:o.host,search:o.search?o.search.replace(/^\?/,""):"",hash:o.hash?o.hash.replace(/^#/,""):"",hostname:o.hostname,port:o.port,pathname:"/"===o.pathname.charAt(0)?o.pathname:"/"+o.pathname}}var t,n=/(msie|trident)/i.test(navigator.userAgent),o=document.createElement("a");return t=e(window.location.href),function(n){var o=r.isString(n)?e(n):n;return o.protocol===t.protocol&&o.host===t.host}}():function(){return function(){return!0}}()},function(e,t){"use strict";function n(){this.message="String contains an invalid character"}function r(e){for(var t,r,i=String(e),s="",u=0,a=o;i.charAt(0|u)||(a="=",u%1);s+=a.charAt(63&t>>8-u%1*8)){if(r=i.charCodeAt(u+=.75),r>255)throw new n;t=t<<8|r}return s}var o="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";n.prototype=new Error,n.prototype.code=5,n.prototype.name="InvalidCharacterError",e.exports=r},function(e,t,n){"use strict";var r=n(2);e.exports=r.isStandardBrowserEnv()?function(){return{write:function(e,t,n,o,i,s){var u=[];u.push(e+"="+encodeURIComponent(t)),r.isNumber(n)&&u.push("expires="+new Date(n).toGMTString()),r.isString(o)&&u.push("path="+o),r.isString(i)&&u.push("domain="+i),s===!0&&u.push("secure"),document.cookie=u.join("; ")},read:function(e){var t=document.cookie.match(new RegExp("(^|;\\s*)("+e+")=([^;]*)"));return t?decodeURIComponent(t[3]):null},remove:function(e){this.write(e,"",Date.now()-864e5)}}}():function(){return{write:function(){},read:function(){return null},remove:function(){}}}()},function(e,t,n){"use 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o=n(23);r.prototype.throwIfRequested=function(){if(this.reason)throw this.reason},r.source=function(){var e,t=new r(function(t){e=t});return{token:t,cancel:e}},e.exports=r},function(e,t){"use strict";e.exports=function(e){return function(t){return e.apply(null,t)}}}])});
//# sourceMappingURL=axios.min.map

发起POST请求 

后端代码

解决跨域问题

import jakarta.servlet.*;
import jakarta.servlet.annotation.WebFilter;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Component;

import java.io.IOException;

@Component
@WebFilter("/*")
public class MyFilter implements Filter {
    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;

        response.setHeader("Access-control-Allow-Origin", request.getHeader("Origin"));
        response.setHeader("Access-Control-Allow-Methods", "GET,POST,OPTIONS,PUT,DELETE,PATCH");
        response.setHeader("Access-Control-Allow-Headers", request.getHeader("Access-Control-Request-Headers"));

        filterChain.doFilter(servletRequest, servletResponse);
    }
}

封装实体类

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@AllArgsConstructor
@Data
@NoArgsConstructor
public class UserLogin {
    private String username;
    private String password;
}

测试接口

import com.alibaba.fastjson.JSONObject;
import jakarta.servlet.ServletInputStream;
import jakarta.servlet.http.HttpServletRequest;
import lombok.RequiredArgsConstructor;
import org.apache.commons.io.IOUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;

import java.io.IOException;
import java.nio.charset.StandardCharsets;

@RestController
@RequiredArgsConstructor
public class DemoController {

    private final HttpServletRequest request;

    @PostMapping("/test")
    public String demo() throws IOException {

        ServletInputStream inputStream = request.getInputStream();

        String jsonString = IOUtils.toString(inputStream, StandardCharsets.UTF_8);
        System.out.println(jsonString);

        UserLogin userLogin = JSONObject.parseObject(jsonString, UserLogin.class);
        System.out.println(userLogin);

        return "test success！";
    }
}

测试结果