HttpClientDemo

//模拟获取tokenpublic static String getToken() throws IOException {//创建连接CloseableHttpClient client &＃61; HttpClients.createDefault();//创建http post请求HttpPost httpPost &＃61; new HttpPost("http://39.101.66.32:"&＃43;port&＃43;"/jeecg-boot/sys/login");//设置post参数JsonObject j &＃61; new JsonObject();j.addProperty("username","admin");j.addProperty("password","Admin1234&＃64;");//构造一个form表单式的实体StringEntity stringEntity &＃61; new StringEntity(j.toString(),"utf-8");//将请求实体设置到httpPost对象中httpPost.addHeader("Content-type","application/json; charset&＃61;utf-8");httpPost.setHeader("Accept","application/json");httpPost.setEntity(stringEntity);CloseableHttpResponse response &＃61; null;try{//执行请求response &＃61; client.execute(httpPost);//判断返回状态是否为200String context &＃61; EntityUtils.toString(response.getEntity(),"utf-8");JSONObject jsonObject &＃61; JSONObject.parseObject(context);String token &＃61; jsonObject.getJSONObject("result").getString("token");return token;}finally {if (response!&＃61;null){response.close();}client.close();}}


PS:需注意创建 StringEntity 时&＃xff0c;需指定编码格式utf-8&＃xff0c;否则入参可能出现中文乱码情况

//获取外置表单jsonpublic static String getFormJson(String token,String formKey) throws IOException {//创建连接CloseableHttpClient client &＃61; HttpClients.createDefault();//拼接urlStringBuilder url &＃61; new StringBuilder();url.append("http://39.101.66.32:"&＃43;port&＃43;"/jeecg-boot/form/list?token&＃61;"&＃43;token);url.append("&isTemplate&＃61;0&pageNo&＃61;1&pageSize&＃61;1");url.append("&code&＃61;"&＃43;formKey);//创建http get请求HttpGet httpGet&＃61; new HttpGet(url.toString());CloseableHttpResponse response &＃61; null;try {response &＃61; client.execute(httpGet);String context &＃61; EntityUtils.toString(response.getEntity(),"utf-8");JSONObject jsonObject &＃61; JSONObject.parseObject(context);String s &＃61; jsonObject.getJSONObject("result").getJSONArray("records").getJSONObject(0).getJSONObject("json").toJSONString();return s;}catch (Exception e){throw new HttpServerErrorException(HttpStatus.INTERNAL_SERVER_ERROR, WorkflowMessageConstant.WORK_FLOW_DEPLOY_FAIL_FORM);}finally {if(response!&＃61;null){response.close();}client.close();}}