带有表单数据的 Java Post 请求
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Java Post request with form data
提问by Ani
I want to make a simple POST call in Java,
I am getting a 200 response code but, with the wrong response message,
I am told there is a different way to make a Post call when using a form data.
Following is my current Java code to make the post call -
我想在 Java 中进行一个简单的 POST 调用，
我得到了 200 响应代码，但是，响应消息错误，
我被告知在使用表单数据时有一种不同的方式进行 Post 调用。
以下是我当前用于进行 post 调用的 Java 代码 -
private String makePostCall(){
try {
String url = "http://someIp/trusted";
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(url);
// add header
List<NameValuePair> urlParameters = new ArrayList<NameValuePair>();
urlParameters.add(new BasicNameValuePair("username", "app_user"));
post.setEntity(new UrlEncodedFormEntity(urlParameters));
HttpResponse response = client.execute(post);
System.out.println("\nSending 'POST' request to URL : " + url);
System.out.println("Post parameters : " + post.getEntity());
System.out.println("Response Code : " + response.getStatusLine().getStatusCode());
BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer result = new StringBuffer();
String line = "";
while ((line = rd.readLine()) != null) {
result.append(line);
}
System.out.println(result.toString());
return result.toString();
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
Following is the Post call sample that is working through Postman app -
以下是通过 Postman 应用程序运行的 Post 调用示例 -
I am referring the following website -
https://www.mkyong.com/java/how-to-send-http-request-getpost-in-java/
我指的是以下网站 -
https://www.mkyong.com/java/how-to-send-http-request-getpost-in-java/
The expected outcome of the post call is supposed to be a Token ie. a String value, current response is -1.
后调用的预期结果应该是一个令牌，即。字符串值，当前响应为 -1。
回答by Bharat DEVre
Give a try by setting content type multipart/form-dataexplicitly,
通过multipart/form-data显式设置内容类型来尝试一下，
post.setHeader("Content-Type", "multipart/form-data");
In your code ,
在您的代码中，
post.setEntity(new UrlEncodedFormEntity(urlParameters));
post.setHeader("Content-Type", "multipart/form-data");
