该HttpClient的已被废弃,现在删除:
org.apache.http.client.HttpClient:
该接口在API级别22中已弃用。请改用openConnection()。请访问此网页以获取更多详细信息。
表示你应该切换到java.net.URL.openConnection()
。
另请参见新的HttpURLConnection文档。
你可以按照以下方式进行操作:
URL url = new URL("http://some-server");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
// read the response
System.out.println("Response Code: " + conn.getResponseCode());
InputStream in = new BufferedInputStream(conn.getInputStream());
String response = org.apache.commons.io.IoUtils.toString(in, "UTF-8");
System.out.println(response);
IoUtils文档:Apache Commons IO
IoUtils Maven依赖项:http : //search.maven.org/#artifactdetails|org.apache.commons|commons-io| 1.3.2| jar
我也遇到了这个问题,以解决自己上的课。哪个基于java.net,并支持高达android的API 24,请检出: HttpRequest.java
使用此类,您可以轻松地:
这里有一些例子:
//Consider next request:
HttpRequest req=new HttpRequest("http://host:port/path");
范例1:
//prepare Http Post request and send to "http://host:port/path" with data params name=Bubu and age=29, return true - if worked
req.prepare(HttpRequest.Method.POST).withData("name=Bubu&age=29").send();
范例2:
// prepare http get request, send to "http://host:port/path" and read server's response as String
req.prepare().sendAndReadString();
例子3:
// prepare Http Post request and send to "http://host:port/path" with data params name=Bubu and age=29 and read server's response as JSONObject
HashMap<String, String>params=new HashMap<>();
params.put("name", "Groot");
params.put("age", "29");
req.prepare(HttpRequest.Method.POST).withData(params).sendAndReadJSON();
例子4:
//send Http Post request to "http://url.com/b.c" in background using AsyncTask
new AsyncTask<Void, Void, String>(){
protected String doInBackground(Void[] params) {
String response="";
try {
response=new HttpRequest("http://url.com/b.c").prepare(HttpRequest.Method.POST).sendAndReadString();
} catch (Exception e) {
response=e.getMessage();
}
return response;
}
protected void onPostExecute(String result) {
//do something with response
}
}.execute();
例子5:
//Send Http PUT request to: "http://some.url" with request header:
String json="{\"name\":\"Deadpool\",\"age\":40}";//JSON that we need to send
String url="http://some.url";//URL address where we need to send it
HttpRequest req=new HttpRequest(url);//HttpRequest to url: "http://some.url"
req.withHeaders("Content-Type: application/json");//add request header: "Content-Type: application/json"
req.prepare(HttpRequest.Method.PUT);//Set HttpRequest method as PUT
req.withData(json);//Add json data to request body
JSONObject res=req.sendAndReadJSON();//Accept response as JSONObject
例子6:
//Equivalent to prevIoUs example, but in a shorter way (using methods chaining):
String json="{\"name\":\"Deadpool\",\"age\":40}";//JSON that we need to send
String url="http://some.url";//URL address where we need to send it
//Shortcut for example 5 complex request sending & reading response in one (chained) line
JSONObject res=new HttpRequest(url).withHeaders("Content-Type: application/json").prepare(HttpRequest.Method.PUT).withData(json).sendAndReadJSON();
例子7:
//Downloading file
byte [] file = new HttpRequest("http://some.file.url").prepare().sendAndReadBytes();
FileOutputStream fos = new FileOutputStream("smile.png");
fos.write(file);
fos.close();