你知道的越多,你不知道的越多
点赞再看,养成习惯
如果您有疑问或者见解,或者没有积分想获取项目和定制项目,欢迎指教:


目前遇到一个对接需求,对方公司提供了一个接口,请求方法为GET,传参是在body中的json格式数据。

针对这个需求,在postman中进行测试,请求成功,后续需要用java进行接口调用。

RestTemplate的请求参数传递问题之RestTemplate发送Get请求通过body传递json参数_body带json参数

首先,我们要了解 RestTemplate 请求方法和 HTTP 请求方法的对应关系。

HTTP method

RestTemplate methods

DELETE

delete

GET

getForObject / getForEntity

HEAD

headForHeaders

OPTIONS

optionsForAllow

POST

postForLocation / postForObject

PUT

put

any

exchange / execute

当使用get请求需要携带 body中的参数的时候 需要重写Http 版本号必须是4.3以上版本

定义HttpGetRequestWithEntity实现HttpEntityEnclosingRequestBase抽象类,以支持GET请求携带body数据

  1. pom 文件引入
<dependency>
<groupId>commons-httpclient</groupId>
<artifactId>commons-httpclient</artifactId>
<version>3.1</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.3</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpmime</artifactId>
<version>4.5.3</version>
</dependency>
  1. 定义 HttpGetRequestWithEntity 实现 HttpEntityEnclosingRequestBase 抽象类
    创建 HttpComponentsClientRestfulHttpRequestFactory.java
public class HttpComponentsClientRestfulHttpRequestFactory extends HttpComponentsClientHttpRequestFactory {
@Override
protected HttpUriRequest createHttpUriRequest(HttpMethod httpMethod, URI uri) {

if (httpMethod == HttpMethod.GET) {
return new HttpGetRequestWithEntity(uri);
}
return super.createHttpUriRequest(httpMethod, uri);
}

/**
* 定义HttpGetRequestWithEntity实现HttpEntityEnclosingRequestBase抽象类,以支持GET请求携带body数据
*/

private static final class HttpGetRequestWithEntity extends HttpEntityEnclosingRequestBase {
public HttpGetRequestWithEntity(final URI uri) {
super.setURI(uri);
}

@Override
public String getMethod() {
return HttpMethod.GET.name();

}
}
}
  1. 配置 RestTemplateConfig,将步骤 2 的 HttpComponentsClientRestfulHttpRequestFactory 类注入
@Configuration
public class RestTemplateConfig {

@Bean(name="remoteRestTemplate")
public RestTemplate restTemplate(ClientHttpRequestFactory simpleClientHttpRequestFactory){
RestTemplate restTemplate = new RestTemplate(simpleClientHttpRequestFactory);
restTemplate.setRequestFactory(new HttpComponentsClientRestfulHttpRequestFactory());
return restTemplate;
}
@Bean
public ClientHttpRequestFactory simpleClientHttpRequestFactory(){
SimpleClientHttpRequestFactory factory = new SimpleClientHttpRequestFactory();
factory.setConnectTimeout(60000);
factory.setReadTimeout(20000);
return factory;
}
}
  1. 发起 body 带 json 参数的 GET 请求
public ResponseEntity<Object> createCodeByNumber(String url, String boxSignerId) {
JSONObject jsonObject = new JSONObject();
jsonObject.put(BOXSIGNERID, boxSignerId);
jsonObject.put(SECRET, secret);

HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_JSON);
HttpEntity<String> httpEntity = new HttpEntity<>(JSON.toJSONString(jsonObject), headers);
log.info("url:" + url + ",httpEntity:" + JSON.toJSONString(httpEntity));
ResponseEntity<Object> response = restTemplate.exchange(url, HttpMethod.GET, httpEntity, Object.class);
log.info("{}请求的返回内容:{}", url, JSON.parseObject(JSON.toJSONString(response.getBody())));
return response;
}

参考资料:

​RestTemplate的请求参数传递问题 RestTemplate发送Get请求通过body传参问题​