HttpGet和HttpPost

 package net.blogjava.mobile;

 import java.net.HttpURLConnection;
 import java.util.ArrayList;
 import java.util.List;

 import org.apache.http.HttpResponse;
 import org.apache.http.NameValuePair;
 import org.apache.http.client.entity.UrlEncodedFormEntity;
 import org.apache.http.client.methods.HttpGet;
 import org.apache.http.client.methods.HttpPost;
 import org.apache.http.impl.client.DefaultHttpClient;
 import org.apache.http.message.BasicNameValuePair;
 import org.apache.http.protocol.HTTP;
 import org.apache.http.util.EntityUtils;

 import android.app.Activity;
 import android.os.Bundle;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;
 import android.widget.EditText;
 import android.widget.TextView;

 public class Main extends Activity implements OnClickListener
 {

     @Override
     public void onClick(View view)
     {
         String url = "http://169.254.103.188/querybooks/QueryServlet";
         TextView tvQueryResult = (TextView) findViewById(R.id.tvQueryResult);
         EditText etBookName = (EditText) findViewById(R.id.etBookName);
         HttpResponse httpResponse = null;
         try
         {

             switch (view.getId())
             {
                 case R.id.btnGetQuery:
                     url += "?bookname=" + etBookName.getText().toString();
                     HttpGet httpGet = new HttpGet(url);
                     httpResponse = new DefaultHttpClient().execute(httpGet);
                     if (httpResponse.getStatusLine().getStatusCode() == 200)
                     {

                         String result = EntityUtils.toString(httpResponse.getEntity(), HTTP.UTF_8);
                         tvQueryResult.setText(result);
                         System.out.println(result);
                     }
                     break;

                 case R.id.btnPostQuery:
                     HttpPost httpPost = new HttpPost(url);
                     List<NameValuePair> params = new ArrayList<NameValuePair>();
                     params.add(new BasicNameValuePair("bookname", etBookName
                             .getText().toString()));
                     httpPost.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));

                     httpResponse = new DefaultHttpClient().execute(httpPost);
                     if (httpResponse.getStatusLine().getStatusCode() == 200)
                     {
                         String result = EntityUtils.toString(httpResponse
                                 .getEntity());
                         tvQueryResult.setText(result.replaceAll("\r", ""));
                     }
                     break;
             }
         }
         catch (Exception e)
         {
             tvQueryResult.setText(e.getMessage());
         }

     }

     @Override
     public void onCreate(Bundle savedInstanceState)
     {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);
         Button btnGetQuery = (Button) findViewById(R.id.btnGetQuery);
         Button btnPostQuery = (Button) findViewById(R.id.btnPostQuery);
         btnGetQuery.setOnClickListener(this);
         btnPostQuery.setOnClickListener(this);

     }
 }

上传文件时，可以使用HttpAnalyzer来捕获HTTP请求信息：上传文档新建文本文档 (3).txt过程：

Request Headers    Value
(Request-Line)    POST /upload/UploadServlet HTTP/1.1
Accept    text/html, application/xhtml+xml, */*
Referer    http://localhost/upload/upload.jsp
Accept-Language    zh-CN
User-Agent    Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)
Content-Type    multipart/form-data; boundary=---------------------------7dea05100618
Accept-Encoding    gzip, deflate
Host    localhost
Content-Length    239
DNT    1
Connection    Keep-Alive
Cache-Control    no-cache
Cookie    JSESSIONID=C55149A1C7C5EEFE0A67D4DA2183E8BF

Response Headers    Value
(Status-Line)    HTTP/1.1 200 OK
Server    Apache-Coyote/1.1
Content-Type    text/html;charset=UTF-8
Content-Length    21
Date    Sun, 14 Dec 2014 07:00:05 GMT

stream标签页信息：

744 bytes sent to :0

POST /upload/UploadServlet HTTP/1.1
Accept: text/html, application/xhtml+xml, */*
Referer: http://localhost/upload/upload.jsp
Accept-Language: zh-CN
User-Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)
Content-Type: multipart/form-data; boundary=---------------------------7dea05100618
Accept-Encoding: gzip, deflate
Host: localhost
Content-Length: 239
DNT: 1
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: JSESSIONID=C55149A1C7C5EEFE0A67D4DA2183E8BF

-----------------------------7dea05100618
Content-Disposition: form-data; name="file"; filename="C:\Users\Administrator\Desktop\鏂板缓鏂囨湰鏂囨。 (3).txt"
Content-Type: text/plain

123abc
-----------------------------7dea05100618--

163 bytes received by :0

HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: text/html;charset=UTF-8
Content-Length: 21
Date: Sun, 14 Dec 2014 07:00:05 GMT

鏂囦欢涓婁紶鎴愬姛!