springboot httpclient

post

/**
     * post
     * */
    public String client(String url,  MultiValueMap<String, String> params){
        RestTemplate client = new RestTemplate();
        HttpHeaders headers = new HttpHeaders();
        //  请勿轻易改变此提交方式，大部分的情况下，提交方式都是表单提交
        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
        HttpEntity<MultiValueMap<String, String>> requestEntity = new HttpEntity<MultiValueMap<String, String>>(params, headers);
        //  执行HTTP请求
        ResponseEntity<String> response = client.exchange(url, HttpMethod.POST, requestEntity, String.class);
        return response.getBody();
    }

get

    /**
     * get
     * */
    public String clientGET(String url){
        RestTemplate client = new RestTemplate();
        //  执行HTTP请求
        ResponseEntity<String> response = client.getForEntity(url,  String.class);
        String body = response.getBody();
        HttpStatus statusCode = response.getStatusCode();
        int statusCodeValue = response.getStatusCodeValue();
        HttpHeaders headers = response.getHeaders();
        return response.getBody();
    }

public void  testPost() throws Exception {
         //api url地址
        String url = "https://api-test.chinazyjr.net/v1/api/JJT/saveBorrow";
        //post请求
        // 封装参数，千万不要替换为Map与HashMap，否则参数无法传递
        MultiValueMap<String, String> params= new LinkedMultiValueMap<String, String>();
        params.add("data", "{\r\n" + 
                "    \"requestUuid\":\"5918531018\",\r\n" + 
                "    \"platform\":\"JJT\",\r\n" + 
                "    \"requestInfo\":{\r\n" + 
                "        \"userId\":\"3d235a90b51f4b7d\",\r\n" + 
                "        \"contractNo\":\"5918531018\",\r\n" + 
                "        \"bidName\":\"testyyq散8标629\",\r\n" + 
                "        \"retUrl\":null,\r\n" + 
                "        \"retType\":\"1\",\r\n" + 
                "        \"retAmt\":\"10125.28\",\r\n" + 
                "        \"borrTotAmt\":\"10000.00\",\r\n" + 
                "        \"yearRate\":\"6\",\r\n" + 
                "        \"borrowReturnPlan\":[\r\n" + 
                "            {\r\n" + 
                "                \"periodNo\":\"1\",\r\n" + 
                "                \"billDate\":\"2018-04-01\",\r\n" + 
                "                \"shouldAmount\":\"2481.32\",\r\n" + 
                "                \"shouldInterest\":\"50.00\",\r\n" + 
                "                \"shouldServiceFee\":\"0\"\r\n" + 
                "            },\r\n" + 
                "            {\r\n" + 
                "                \"periodNo\":\"2\",\r\n" + 
                "                \"billDate\":\"2018-05-01\",\r\n" + 
                "                \"shouldAmount\":\"2493.73\",\r\n" + 
                "                \"shouldInterest\":\"37.59\",\r\n" + 
                "                \"shouldServiceFee\":\"0\"\r\n" + 
                "            },\r\n" + 
                "            {\r\n" + 
                "                \"periodNo\":\"3\",\r\n" + 
                "                \"billDate\":\"2018-06-01\",\r\n" + 
                "                \"shouldAmount\":\"2506.20\",\r\n" + 
                "                \"shouldInterest\":\"25.12\",\r\n" + 
                "                \"shouldServiceFee\":\"0\"\r\n" + 
                "            },\r\n" + 
                "            {\r\n" + 
                "                \"periodNo\":\"4\",\r\n" + 
                "                \"billDate\":\"2018-07-01\",\r\n" + 
                "                \"shouldAmount\":\"2518.75\",\r\n" + 
                "                \"shouldInterest\":\"12.57\",\r\n" + 
                "                \"shouldServiceFee\":\"0\"\r\n" + 
                "            }\r\n" + 
                "        ],\r\n" + 
                "        \"borrowUserInfo\":{\r\n" + 
                "            \"userName\":\"张玉言\",\r\n" + 
                "            \"sex\":1,\r\n" + 
                "            \"age\":33,\r\n" + 
                "            \"education\":\"哈佛\",\r\n" + 
                "            \"maritalStatus\":\"未婚\",\r\n" + 
                "            \"censusRegisterAddress\":\"江苏徐州市泉山区sdf\",\r\n" + 
                "            \"childrenFlag\":1,\r\n" + 
                "            \"unitIndustry\":null,\r\n" + 
                "            \"livingAddress\":null,\r\n" + 
                "            \"position\":null,\r\n" + 
                "            \"houseSituation\":null,\r\n" + 
                "            \"houseLoan\":null,\r\n" + 
                "            \"companyNature\":null,\r\n" + 
                "            \"entryDate\":null,\r\n" + 
                "            \"monthlyIncome\":null,\r\n" + 
                "            \"workYears\":null,\r\n" + 
                "            \"houseAssets\":null,\r\n" + 
                "            \"carAssets\":null,\r\n" + 
                "            \"annualEarnings\":null,\r\n" + 
                "            \"valuation\":null,\r\n" + 
                "            \"idCard\":\"532927199308065798\",\r\n" + 
                "            \"mobile\":\"18212000000\"\r\n" + 
                "        },\r\n" + 
                "        \"periodsUnit\":\"3\",\r\n" + 
                "        \"periods\":\"4\"\r\n" + 
                "    }\r\n" + 
                "}");
        //发送http请求并返回结果
        String returnStrnig = client(url,params);
        System.out.println(returnStrnig);
    }

    public void  testGet() throws Exception {
         //api url地址
       String url = "https://boss-test.chinazyjr.net/login.html";
       String body = clientGET(url);
       System.out.println(body);
    }