我正在尝试使用HttpURLConnection
从服务器获取数据。该请求是GET
请求。但是,它始终返回状态代码405(BAD_METHOD)
。以下是我写的方法:
URL url2 = new URL("http://www.example.com/api/client_list?");
HttpURLConnection connection = (HttpURLConnection) url2
.openConnection();
connection.setRequestMethod("GET");
connection.setReadTimeout(NET_READ_TIMEOUT_MILLIS);
connection.setConnectTimeout(CONNECTION_TIMEOUT_MILLIS);
connection.setRequestProperty("Authorization", token);
connection.setDoInput(true);
connection.setDoOutput(true);
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("client_id", clientRole));
OutputStream os = connection.getOutputStream();
BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(os, "UTF-8"));
writer.write(getQuery(params));
writer.flush();
writer.close();
connection.connect();
getQuery()
private String getQuery(List<NameValuePair> params)
throws UnsupportedEncodingException {
StringBuilder result = new StringBuilder();
boolean first = true;
for (NameValuePair pair : params) {
if (first)
first = false;
else
result.append("&");
result.append(URLEncoder.encode(pair.getName(), "UTF-8"));
result.append("=");
result.append(URLEncoder.encode(pair.getValue(), "UTF-8"));
}
return result.toString();
}
如果使用HttpClient
执行相同操作,我会得到所需的输出。以下是与HttpClient
String url = "http://www.example.com/api/client_list?client_id=" + rolename;
HttpClient httpClient = new DefaultHttpClient();
HttpGet httpGet = new HttpGet(url);
httpGet.setHeader("Authorization", "Bearer " + token);
httpClient.execute(httpGet);
我没有得到HttpUrlConnection的错误。
答案 0 :(得分:14)
connection.setDoInput(true);
强制POST请求。设为connection.setDoInput(false);
答案 1 :(得分:0)
根据我的GET
方法,参数将作为URL的一部分发送,所以试试这个。
String request = "http://example.com/index.php?param1=a¶m2=b¶m3=c";
URL url = new URL(request);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setInstanceFollowRedirects(false);
connection.setRequestMethod("GET");
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection.setRequestProperty("charset", "utf-8");
connection.setUseCaches (false);
BufferedReader in = new BufferedReader(
new InputStreamReader(connection.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
//print result
System.out.println(response.toString());
试一试。
答案 2 :(得分:0)
我在OP的代码中遇到的问题是打开输出流...:
OutputStream os = connection.getOutputStream();
...将连接从“ GET”(我最初通过setProperties在连接上初始设置)隐式更改为“ POST”,从而在端点上出现405错误。如果要具有同时支持GET和POST操作的灵活的httpConnection方法,则仅在非GET http调用上打开输出流。
答案 3 :(得分:-1)
正如您所说,状态代码405表示BAD_METHOD,因此服务器请求可能 GET 方法。尝试connection.setRequestMethod(&#34; POST&#34;);