最近在使用httpclient进行post时远程接口发生报错
报错信息:
: JSON parse error: Unrecognized token 'Alarm': was expecting (JSON String, Number, Array, Object or token 'null', 'true' or 'false'); nested exception is : Unrecognized token 'Alarm': was expecting (JSON String, Number, Array, Object or token 'null', 'true' or 'false')
原因及解决方法:
原因是请求参数格式不正确,不是标准的json格式,通过JSONObject对象把参数转为json字符串即可,即修改消息体构造代码。
报错代码:
public HttpEntity httpPost(String url, Alarm data){
try{
CloseableHttpClient httpClient = ();
// 创建httpPost实例
HttpPost post = new HttpPost(url);
//构造消息头
("Content-type", "application/json; charset=utf-8");
// 构造消息体
StringEntity entity = new StringEntity((), ("application/json", "utf-8"));
(entity);
CloseableHttpResponse response = (post);
HttpEntity responseEntity = ();
int statusCode = ().getStatusCode();
//最后关闭HttpClient资源.
();
return responseEntity;
}catch (Exception e){
();
return null;
}
}
修改后的代码:
public HttpEntity httpPost(String url, Alarm data){
try{
CloseableHttpClient httpClient = ();
// 创建httpPost实例
HttpPost post = new HttpPost(url);
//构造消息头
("Content-type", "application/json; charset=utf-8");
// 构造消息体
StringEntity entity = new StringEntity(new JSONObject(data).toString(), ("application/json", "utf-8"));
(entity);
CloseableHttpResponse response = (post);
HttpEntity responseEntity = ();
int statusCode = ().getStatusCode();
//最后关闭HttpClient资源.
();
return responseEntity;
}catch (Exception e){
();
return null;
}
}
JSONObject依赖:
<dependency>
<groupId></groupId>
<artifactId>json</artifactId>
<version>20211205</version>
</dependency>