开发中使用RestTemplate来进行访问,设置请求头的方法:
方法一:单独设置
public class TestRestTemplate {
@Autowired
private RestTemplate restTemplate;
public void postObject(String id){
String url="http://www.baidu.com";
MultiValueMap<String, String> map = new LinkedMultiValueMap<>();
map.add("id",id);
HttpHeaders header = new HttpHeaders();
// 需求需要传参为form-data格式
header.setContentType(MediaType.MULTIPART_FORM_DATA);
HttpEntity<MultiValueMap<String, String>> httpEntity = new HttpEntity<>(map, header);
JSONObject response = restTemplate.postForObject(url, httpEntity, JSONObject.class);
}
}
方法二:公共设置,使用interceptor拦截器设置
1.添加拦截器
public class HeaderRequestInterceptor implements ClientHttpRequestInterceptor {
private final String headerName;
private final String headerValue;
public HeaderRequestInterceptor(String headerName, String headerValue) {
this.headerName = headerName;
this.headerValue = headerValue;
}
@Override
public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution) throws IOException {
request.getHeaders().set(headerName, headerValue);
return execution.execute(request, body);
}
2.配置RestTemplate Bean
@Configuration
public class RestTemplateConfig {
@Bean
public RestTemplate restTemplate() {
List<ClientHttpRequestInterceptor> interceptors = new ArrayList<>();
interceptors.add(new HeaderRequestInterceptor("token", "123"));
RestTemplate restTemplate = new RestTemplate();
restTemplate.setInterceptors(interceptors);
return restTemplate;
}
}
3.使用RestTemplate Bean
@Autowired
private RestTemplate restTemplate;