RestTemplate带参发送get及post请求携带headers请求头代码示例

一、发送get请求携带headers

@Test
    public void testGetWithHeaders(){

        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);

        Map map = new HashMap();
        map.put("pageNum",1);
        map.put("pageSize",15);

        HttpEntity httpEntity = new HttpEntity<>(null, headers);

        //get请求
        String newUrl = "https://xxxxxxx.com:8101/operate/operate_pay/getOperatesPay?pageNum="+1+"&pageSize="+15;
        ResponseEntity responseEntity = restTemplate.exchange(newUrl, HttpMethod.GET, httpEntity, String.class);
        String body = responseEntity.getBody();
        System.err.println(body);

    }

二、发送get请求不带headers

@Test
    public void testGetWithoutHeaders(){
        Map map = new HashMap();
        map.put("pageNum",1);
        map.put("pageSize",15);

        //get请求
        String url = "https://xxxxxx.com:8101/operate/operate_pay/getOperatesPay?pageNum={pageNum}&pageSize={pageSize}";
        ResponseEntity responseEntity = restTemplate.getForEntity(url, String.class, map);
        
        String body = responseEntity.getBody();
        System.err.println(body);

    }

三、发送post请求携带headers

@Test
    public void testPostWithHeaders(){
        String url = "https://XXXXX.com:8101/baseinfo/company/setCompany";
        String json = "{\n" +
                "\t\"contactAddress\":\"武汉市洪山区邮科院内东区烽火创新谷精密工艺楼5楼5区\",\n" +
                "\t\"legalName\":\"XXXX\",\n" +
                "\t\"companyId\":\"XXXXX\",\n" +
                "\t\"address\":420100,\n" +
                "\t\"businessScope\":\"网络预约出租汽车客运\",\n" +
                "\t\"economicType\":\"有限责任（公司）\",\n" +
                "\t\"companyName\":\"武汉XXXXXX信息科技有限公司\",\n" +
                "\t\"identifier\":\"XXXXXX\",\n" +
                "\t\"legalPhone\":\"XXXXXX\",\n" +
                "\t\"regCapital\":\"1000000.0000万元\",\n" +
                "\t\"state\":0,\n" +
                "\t\"flag\":1,\n" +
                "\t\"legalID\":\"XXXXXXXXXXXXXXX\",\n" +
                "\t\"updateTime\":20180920111808,\n" +
                "\t\"legalPhoto\":\"driver/drivelicense1_1524554483.jpg\"\n" +
                "}";
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);

        JSONObject jsonObject = JSONObject.parseObject(json);

        // Map map =JSONObject.parseObject(json, Map.class);
        // MultiValueMap multiValueMap = new LinkedMultiValueMap<>();
        // multiValueMap.setAll(map);

        HttpEntity httpEntity = new HttpEntity<>(jsonObject,headers);
        // ResponseEntity responseEntity = restTemplate.postForEntity(url, map, String.class,httpEntity);
        ResponseEntity responseEntity = restTemplate.postForEntity(url, httpEntity, String.class);
        System.err.println(responseEntity.getBody());
    }

四、发送post请求不带headers

@Test
    public void testPostWithoutHeaders(){
        String url = "https://XXXXX.com:8101/baseinfo/company/setCompany";
        String json = "{\n" +
                "\t\"contactAddress\":\"武汉市洪山区邮科院内东区烽火创新谷精密工艺楼5楼5区\",\n" +
                "\t\"legalName\":\"XXXX\",\n" +
                "\t\"companyId\":\"42XX01XXXX4LXXX9C\",\n" +
                "\t\"address\":420100,\n" +
                "\t\"businessScope\":\"网络预约出租汽车客运\",\n" +
                "\t\"economicType\":\"有限责任（公司）\",\n" +
                "\t\"companyName\":\"武汉XXXXXXX信息科技有限公司\",\n" +
                "\t\"identifier\":\"XXXXXXX\",\n" +
                "\t\"legalPhone\":\"XXXXXXX\",\n" +
                "\t\"regCapital\":\"100000.0000万元\",\n" +
                "\t\"state\":0,\n" +
                "\t\"flag\":1,\n" +
                "\t\"legalID\":\"XXXXXXXX\",\n" +
                "\t\"updateTime\":20180920111808,\n" +
                "\t\"legalPhoto\":\"driver/drivelicense1_1524554483.jpg\"\n" +
                "}";
        Map map = JSONObject.parseObject(json, Map.class);
        ResponseEntity responseEntity = restTemplate.postForEntity(url, map, String.class);
        System.err.println(responseEntity.getBody());
    }

补充：配置类。视情况而选择，也可使用默认的配置。

/***
 * 内部服务调用者
 * @author zhangxueliang
 */
@Configuration
public class RestTemplateConfig {

    /**
     * 适用于服务使用RestTemplate调用外部地址请求
     * @return
     */
    @Bean
    public RestTemplate restTemplate() {
        RestTemplate restTemplate = new RestTemplate(clientHttpRequestFactory());
        return restTemplate ;
    }

    /***
     * 适用于服务内部之间使用RestTemplate相互调用增加Rinbbo机制
     * 通过服务名方式
     * @return
     */
    @Bean(name="loadBalancedRestTemplate")
    @LoadBalanced
    public RestTemplate loadBalancedRestTemplate() {
        RestTemplate restTemplate = new RestTemplate(clientHttpRequestFactory());
        return restTemplate ;
    }

    private ClientHttpRequestFactory clientHttpRequestFactory() {
        HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory();
        factory.setReadTimeout(5000);
        factory.setConnectTimeout(5000);
        factory.setConnectionRequestTimeout(5000);
        return factory;
    }

}