android客戶端發送XML數據至服務器

使用android發送XML數據

服務器端：

1.用一個servlet來接收android客戶端的請求。

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import cn.kafei.utils.StreamTool;

@WebServlet("/XmlServlet")
public class XmlServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
	}

	protected void doPost(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		//通過request的getInputStream方法可以獲得android客戶端發送的XML數據流
		byte[] data = StreamTool.read(request.getInputStream());
		String xml = new String(data, "UTF-8");
		System.out.println(xml);
	}
}

2.讀取流中的數據：

/**
	 * 讀取流中的數據
	 */
	public static byte[] read(InputStream inputStream) throws IOException {
		ByteArrayOutputStream outputStream=new ByteArrayOutputStream();
		byte[] b=new byte[1024];
		int len=0;
		while((len=inputStream.read(b))!=-1){
			outputStream.write(b,0,len);
		}
		inputStream.close();
		return outputStream.toByteArray();
	}

android客戶端：

1.首先準備一個提供測試的XML文件（city.xml），放在src目錄下：

<?xml version="1.0" encoding="UTF-8"?>
<citys>
  <china id="0">
    <city>蘭州</city>
    <province>甘肅</province>
  </china>
  <china id="1">
    <city>慶陽</city>
    <province>甘肅</province>
  </china>  
</citys>

2.編寫發送的業務邏輯：

public void testSendXML() throws Exception {
		// 向服務器發送實體數據
		InputStream inStream = this.getClass().getClassLoader()
				.getResourceAsStream("city.xml");//加載本地XML文件
		byte[] data = StreamTool.read(inStream);//獲得文件的字節數組
		String path = "http://192.168.1.100:8080/web/XmlServlet";//發送路徑
		HttpURLConnection conn = (HttpURLConnection) new URL(path)
				.openConnection();
		conn.setConnectTimeout(5000);
		conn.setRequestMethod("POST");//以PSOT方式進行提交
		conn.setDoOutput(true);//允許輸出數據
		conn.setRequestProperty("Content-Type", "text/xml; charset=UTF-8");//設置發送的文件類型
		conn.setRequestProperty("Content-Length", String.valueOf(data.length));//設置發送文件的長度
		conn.getOutputStream().write(data);//些人輸出流中
		//判斷是否發送成功，只有調用了getResponseCode方法才真正的實現發送的動作
		if (conn.getResponseCode() == 200) {
			System.out.println("發送成功");
		} else {
			System.out.println("發送失敗");
		}
	}

至此android客戶端向服務器發送XML數據就已完成。歡迎大家進行交流