Android（五）数据存储之五网络数据交互 2

 3.ClientService类

package com.changcheng.web.client.service;

 

import java.io.ByteArrayOutputStream;

import java.io.DataOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.InputStream;

import java.net.HttpURLConnection;

import java.net.URL;

import java.util.HashMap;

import java.util.Map;

import android.os.Environment;

import android.util.Log;

 

public class ClientService {

 

         private static final String TAG = "ClientService";

 

         // 以get方式发送请求

         public static void sendDataToServerByGet() throws Exception {

                   // 主机地址不可以设置为localhost或127.0.0.1，必须是本机或其他机器所在Internet网或局域网地址。

                   String path = "http://192.168.0.2:8080/AndroidWebServer/server.do?"

                                     + "method=sendDataByGet&name=changcheng";

                   URL url = new URL(path);

                   HttpURLConnection conn = (HttpURLConnection) url.openConnection();

                   conn.setConnectTimeout(6 * 1000);

                   // 请求成功

                   if (conn.getResponseCode() == 200) {

                            // 获取服务器返回的数据

                            byte[] data = readStream(conn.getInputStream());

                            Log.i(TAG, new String(data, "UTF-8"));

                   }

         }

 

         // 以Post方式发送请求，面向HTTP协议编程

         public static void sendDataTOserverByPost() throws Exception {

                   String path = "http://192.168.0.2:8080/AndroidWebServer/server.do";

                   String params = "method=sendDataByPost&name=tingting";// 请求参数

                   byte[] data = params.getBytes();

                   URL url = new URL(path);

                   HttpURLConnection conn = (HttpURLConnection) url.openConnection();

                   conn.setConnectTimeout(6 * 1000);

                   conn.setDoOutput(true);// 发送POST请求必须设置允许输出

                   conn.setUseCaches(false);// 不使用Cache

                   conn.setRequestMethod("POST");

                   conn.setRequestProperty("Connection", "Keep-Alive");// 维持长连接

                   conn.setRequestProperty("Charset", "UTF-8");

                   conn.setRequestProperty("Content-Length", String.valueOf(data.length));

                   conn.setRequestProperty("Content-Type",

                                     "application/x-www-form-urlencoded");

                   DataOutputStream outStream = new DataOutputStream(conn

                                     .getOutputStream());

                   outStream.write(data);// 以内容实体方式发送请求参数

                   outStream.flush();

                   outStream.close();

                   // 请求成功

                   if (conn.getResponseCode() == 200) {

                            // 获取服务器返回的数据

                            byte[] html = readStream(conn.getInputStream());

                            Log.i(TAG, new String(html, "UTF-8"));

                   }

         }

 

         // 以表单方式发送请求

         public static void sendDataToServerByForm() throws Exception {

                   Map<String, String> params = new HashMap<String, String>();

                   params.put("method", "sendDataByForm");

                   params.put("strData", "字符串数据");

                   // 获取SDCard中的good.jpg

                   File file = new File(Environment.getExternalStorageDirectory(),

                                     "app_Goog_Android_w.png");

                   FormFile fileData = new FormFile("app_Goog_Android_w.png", new FileInputStream(file),

                                     "fileData", "application/octet-stream");

                   HttpRequester.post(

                                     "http://192.168.0.2:8080/AndroidWebServer/server.do", params,

                                     fileData);

         }

 

         // 获取输入流数据

         private static byte[] readStream(InputStream inStream) throws Exception {

                   byte[] buffer = new byte[1024];

                   int len = -1;

                   ByteArrayOutputStream outStream = new ByteArrayOutputStream();

                   while ((len = inStream.read(buffer)) != -1) {

                            outStream.write(buffer, 0, len);

                   }

                   byte[] data = outStream.toByteArray();

                   outStream.close();

                   inStream.close();

                   return data;

         }

}

       其中使用到的FormFile类：

package com.changcheng.web.client.service;

 

import java.io.InputStream;

 

/**

 * 上传文件

 */

public class FormFile {

         /* 上传文件的数据 */

         private byte[] data;

         private InputStream inStream;

         /* 文件名称 */

         private String filname;

         /* 表单字段名称*/

         private String formname;

         /* 内容类型 */

         private String contentType = "application/octet-stream";

        

         public FormFile(String filname, byte[] data, String formname, String contentType) {

                   this.data = data;

                   this.filname = filname;

                   this.formname = formname;

                   if(contentType!=null) this.contentType = contentType;

         }

        

         public FormFile(String filname, InputStream inStream, String formname, String contentType) {

                   this.filname = filname;

                   this.formname = formname;

                   this.inStream = inStream;

                   if(contentType!=null) this.contentType = contentType;

         }

        

         public InputStream getInStream() {

                   return inStream;

         }

 

         public void setInStream(InputStream inStream) {

                   this.inStream = inStream;

         }

 

         public byte[] getData() {

                   return data;

         }

 

         public void setData(byte[] data) {

                   this.data = data;

         }

 

         public String getFilname() {

                   return filname;

         }

 

         public void setFilname(String filname) {

                   this.filname = filname;

         }

 

         public String getFormname() {

                   return formname;

         }

 

         public void setFormname(String formname) {

                   this.formname = formname;

         }

 

         public String getContentType() {

                   return contentType;

         }

 

         public void setContentType(String contentType) {

                   this.contentType = contentType;

         }

        

}