导入org.apache.http HttpPost（）。getParams（）。setParameter（…）无效，HttpPost（）。setEntity（list）也无效

Question

I not getting either of the following to work:

import import org.apache.http....

    HttpPost post = new HttpPost(new URI(url));

    List<NameValuePair> params = new ArrayList<NameValuePair>();
    HttpParams postP = post.getParams();
    for ( String param : postParams.keySet() ) {
        String value = postParams.get( param );
        postP.setParameter( param, value );    // one way to set POST vals
        // params.add( new BasicNameValuePair( param, value) );  // alt way to set post vals?
    }
    // post.setEntity(new UrlEncodedFormEntity(params, "UTF-8"));  // alt way to set post vals?

    // transfer Access token to HTTP header
    if ( access_token != null ) {
        post.setHeader( "access_token", access_token );
    }

    HttpResponse response = sslClient.execute( post );

for either the setParameter() or setEntity() methods, the web server logs nothing. for example Google+ ( https://accounts.google.com/o/oauth2/token ) replies that required params are not set.

However the following works but IMHO is pure messy; i'd prefer one of the above:

    URL uri = new URL(url);
    URLConnection conn = uri.openConnection();
    conn.setDoOutput(true);
    OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream());
    StringBuilder sb = new StringBuilder();
    for ( String param : postParams.keySet() ) {
        String value = postParams.get( param );
        sb.append(param +"="+ value +"&");
    }
    //write parameters
    writer.write( sb.toString() );
    writer.flush();

any way to get the pure org.apache.http to work?

Answer 1

The fluent API relieves the user from having to deal with manual deallocation of system resources at the cost of having to buffer response content in memory in some cases.

Request.Get("http://targethost/homepage")
    .execute().returnContent();
Request.Post("http://targethost/login")
    .bodyForm(Form.form().add("username",  "vip").add("password",  "secret").build())
    .execute().returnContent();

Link to javadoc: http://hc.apache.org/httpcomponents-client-ga/fluent-hc/apidocs/org/apache/http/client/fluent/Request.html