Unrecognized token ‘xx‘: was expecting (JSON String, Number, Array, Object or token ‘null‘, ‘true‘..-蒲公英云

Unrecognized token ‘xx‘: was expecting (JSON String, Number, Array, Object or token ‘null‘, ‘true‘..

迷南。 2024-04-06 12:48 187阅读 0赞

一，业务场景

与第三方对接，需要调第三方接口，用postmen都可以正常请求，但是用java代码写的post请求就报错。

二、报错信息

2、JSON parse error: Unrecognized token ‘license’: was expecting (JSON String, Number, Array, Object or token ‘null’, ‘true’ or ‘false’); nested exception is com.fasterxml.jackson.core.JsonParseException: Unrecognized token ‘license’: was expecting (JSON String, Number, Array, Object or token ‘null’, ‘true’ or ‘false’)\n at [Source: (org.springframework.util.StreamUtils$NonClosingInputStream); line: 1, column: 9]

三问题原因：

很明显就是入参“license”解析报错，具体而言，和接口的 @RequestBody关键字有关，在后台参数反序列化过程中出错了。

四、post请求代码

这里是参考我之前写的一个post请求

我这里的写法会有两个问题，对应上面的两个报错

java实现http,post请求_凌抆莂的博客-CSDN博客

public static String send(String url, Map<String, String> map, String encoding) throws Exception {
        String body = "";
        // 创建httpclient对象
        CloseableHttpClient client = HttpClients.createDefault();
        // 创建post方式请求对象
        HttpPost httpPost = new HttpPost(url);
        // 装填参数
        List<NameValuePair> nvps = new ArrayList<NameValuePair>();
        if (map != null) {
            for (Entry<String, String> entry : map.entrySet()) {
                nvps.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
            }
        }
        // 设置参数到请求对象中
        httpPost.setEntity(new UrlEncodedFormEntity(nvps, encoding));
        // 设置header信息
        // 指定报文头【Content-type】、【User-Agent】
        httpPost.setHeader("Content-type", "application/json;charset=UTF-8");
        // 执行请求操作，并拿到结果（同步阻塞）
        CloseableHttpResponse response = client.execute(httpPost);
        // 获取结果实体
        HttpEntity entity = response.getEntity();
        if (entity != null) {
            // 按指定编码转换结果实体为String类型
            body = EntityUtils.toString(entity, encoding);
        }
        EntityUtils.consume(entity);
        // 释放链接
        response.close();
        return body;
    }

五、解决办法

将httpPost.setEntity(new UrlEncodedFormEntity(nvps, encoding));

改为httpPost.setEntity(new StringEntity(str, encoding));

修改后的请求

public static void main(String[] args) {
        String urlPath = "xxxxxx";
        JSONObject param = new JSONObject();
        JSONObject jsonObject = new JSONObject();
        List list = new ArrayList();
        param.put("license", "111");
        list.add(jsonObject);
        param.put("record", list);
        TdLog.error("1111========"+param);;
        String post = send(urlPath, param.toJSONString(), "UTF-8");
    }
    public static String send(String url, String str, String encoding) {
        String body = "";
        try {
            // 创建httpclient对象
            CloseableHttpClient client = HttpClients.createDefault();
            // 创建post方式请求对象
            HttpPost httpPost = new HttpPost(url);
            // 设置参数到请求对象中
            httpPost.setEntity(new StringEntity(str, encoding));
            // 设置header信息
            // 指定报文头【Content-type】、【User-Agent】
            httpPost.setHeader("Content-type", "application/json;charset=UTF-8");
            // 执行请求操作，并拿到结果（同步阻塞）
            CloseableHttpResponse response = client.execute(httpPost);
            // 获取结果实体
            HttpEntity entity = response.getEntity();
            if (entity != null) {
                // 按指定编码转换结果实体为String类型
                body = EntityUtils.toString(entity, encoding);
            }
            EntityUtils.consume(entity);
            // 释放链接
            response.close();
            return body;
        } catch (Exception e1) {
            e1.printStackTrace();
            return "";
        }
    }