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java - 使用 POST 发送 JSON 对象时的 HTTP 415

转载 作者:IT老高 更新时间:2023-10-28 20:51:04 28 4
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import java.io.BufferedReader;    
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.io.DataOutputStream;
import java.io.InputStream;

public class TestingPost {

public static void main(String args[]) {

URL url;
HttpURLConnection connection = null;
String targetURL=".....";//here is my local server url
String urlParameters="{\"clubhash\":\"100457d41b9-ab22-4825-9393-ac7f6e8ff961\",\"username\":\"anonymous\",\"message\":\"simply awesome\",\"timestamp\":\"2012/11/05 13:00:00\"}";

try {
//Create connection
url = new URL(targetURL);
connection = (HttpURLConnection)url.openConnection();
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");

connection.setRequestProperty("Content-Length", "" +
Integer.toString(urlParameters.getBytes().length));
connection.setRequestProperty("Content-Language", "en-US");

connection.setUseCaches (false);
connection.setDoInput(true);
connection.setDoOutput(true);

//Send request
DataOutputStream wr = new DataOutputStream (
connection.getOutputStream ());
wr.writeBytes (urlParameters);
wr.flush ();
wr.close ();

//Get Response
InputStream is = connection.getInputStream();
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
String line;
StringBuffer response = new StringBuffer();
while((line = rd.readLine()) != null) {
response.append(line);
response.append('\r');
}
rd.close();
System.out.println("message="+response.toString());

} catch (Exception e) {

e.printStackTrace();

} finally {

if(connection != null) {
connection.disconnect();
}
}
}

}

我正在尝试使用 HTTP POST 方法发送 JSON 对象。以上是代码,但我得到了

java.io.IOException: Server returned HTTP response code: 415 for URL: ....
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at TestingPost.main(TestingPost.java:38)"

我的代码有什么问题?

最佳答案

你得到的HTTP响应码是

415 Unsupported Media Type

这意味着服务器无法处理您发送给它的格式。您的 HTTP 请求设置此 header :

Content-Type: application/x-www-form-urlencoded

这是提交表单时浏览器发送的内容类型。如果要发送 JSON,请使用此 header :

Content-Type: application/json

关于java - 使用 POST 发送 JSON 对象时的 HTTP 415,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/13246529/

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