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com.fasterxml.jackson.core.JsonParseException: Unrecognized token ‘Alarm‘: was expecting (JSON Stri

jsonjavahttpclient 2023-09-01 14:09:03 198人浏览 泡泡鱼
摘要

最近在使用Httpclient进行post时远程接口发生报错 报错信息: org.springframework.http.converter.HttpMessageNotReadableException: JSON parse er

最近在使用Httpclient进行post时远程接口发生报错

报错信息:

org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Unrecognized token 'Alarm': was expecting (jsON String, Number, Array, Object or token 'null', 'true' or 'false'); nested exception is com.fasterxml.jackson.core.JsonParseException: 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 = HttpClients.createDefault();            // 创建httpPost实例            HttpPost post = new HttpPost(url);            //构造消息头            post.setHeader("Content-type", "application/json; charset=utf-8");            // 构造消息体            StringEntity entity = new StringEntity(data.toString(), ContentType.create("application/json", "utf-8"));            post.setEntity(entity);            CloseableHttpResponse response = httpClient.execute(post);            HttpEntity responseEntity = response.getEntity();            int statusCode = response.getStatusLine().getStatusCode();            //最后关闭HttpClient资源.            httpClient.close();            return responseEntity;        }catch (Exception e){            e.printStackTrace();            return null;        }    }

修改后的代码:

 

public HttpEntity httpPost(String url, Alarm data){        try{            CloseableHttpClient httpClient = HttpClients.createDefault();            // 创建httpPost实例            HttpPost post = new HttpPost(url);            //构造消息头            post.setHeader("Content-type", "application/json; charset=utf-8");            // 构造消息体            StringEntity entity = new StringEntity(new JSONObject(data).toString(), ContentType.create("application/json", "utf-8"));            post.setEntity(entity);            CloseableHttpResponse response = httpClient.execute(post);            HttpEntity responseEntity = response.getEntity();            int statusCode = response.getStatusLine().getStatusCode();            //最后关闭HttpClient资源.            httpClient.close();            return responseEntity;        }catch (Exception e){            e.printStackTrace();            return null;        }    }

JSONObject依赖:

                    org.json            json            20211205        

来源地址:https://blog.csdn.net/weixin_46205984/article/details/128477359

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