发送http失败报错 The server xxx failed to respond

痛定思痛。 2024-03-26 18:59 48阅读 0赞

### 调用第三方接口postman可以请求成功，但是用代码请求失败 ###

1、发送http post请求 x-www-form-urlencoded 代码如下：

public static String sendPostxXWwwFormUrlencoded(String url, String param) {
            try {
                PostMethod postMethod = null;
                postMethod = new PostMethod(url);
                postMethod.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
                postMethod.setRequestHeader("Connection", "keep-alive");
                postMethod.setRequestHeader("contentType", "utf-8");
                //参数设置，需要注意的就是里边不能传NULL，要传空字符串
                NameValuePair[] data = {
                        new NameValuePair("imageURL", param)
                };
                postMethod.setRequestBody(data);
                org.apache.commons.httpclient.HttpClient httpClient = new org.apache.commons.httpclient.HttpClient();
                //设置超时时间
                httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(5000);
                httpClient.getHttpConnectionManager().getParams().setSoTimeout(5000);
                // 执行POST方法
                int response = httpClient.executeMethod(postMethod);
                String result = postMethod.getResponseBodyAsString();
                log.info("recv - {}", result);
                return result;
            } catch (IOException ioe) {
                ioe.printStackTrace();
            } catch (Exception e) {
                log.info("请求异常" + e.getMessage(), e);
                throw new RuntimeException(e.getMessage());
            }
            return "";
        }

2、POSTMAIN请求如下：  
![在这里插入图片描述][1b3f0c15fc7144069108326f2fefa96c.png]  
原因是因为第三方接口开始返回时没有响应头没有返回对应的**Content-Type**  
3、解决办法，要求第三方接口在响应头加上对应的Content-Type就可以响应了。

[1b3f0c15fc7144069108326f2fefa96c.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/26/f5fff955f5aa40638816121a4cd0ca4a.png