android http通过post请求发送一个xml

今天，简单讲讲android如何在网络请求时通过post方式发送xml数据。

其实也很简单，不过我之前对网络请求这一块不太熟悉，当需要做这个发送xml数据时，居然不知道怎么做。后来，在网上查找资料，最终是解决了问题。这里记录一下。

一.通过HttpURLConnection发送xml数据

因为原理很简单，直接举例子。

其中发送的xml数据为：

 


SeqID 
CommandID 
ABSCDSDF
ChargeMSISDN
SPID
 Code 
< IDtype > IDtype 0
 ID 0

返回的xml数据为：

 
 
 
SeqID 
ResultCode0

然后进行解析，代码如下，参考一下，对于以后再做post请求的时候，做参考

class httpThread implements Runnable {

    /* (non-Javadoc)
     * @see java.lang.Runnable#run()
     */
    @Override
    public void run() {
        // TODO Auto-generated method stub
        //组建xml数据
        StringBuilder xml = new StringBuilder();
        xml.append("");
        xml.append("");
        xml.append("");
        xml.append("13333333333");
        xml.append("1");
        xml.append("1333333333");
        xml.append("1333333333");
        xml.append("3510127");
        xml.append("");
        xml.append("0");
        xml.append("135000000000000216559");
        xml.append("");
        xml.append("");

        try {
            byte[] xmlbyte = xml.toString().getBytes("UTF-8");
            
            System.out.println(xml);

            URL url = new URL("http://118.85.194.28:8080/sotpms_server/GetSSOMessage");
            
            
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setConnectTimeout(5000);
            conn.setDoOutput(true);// 允许输出
            conn.setDoInput(true);
            conn.setUseCaches(false);// 不使用缓存
            conn.setRequestMethod("POST");
            conn.setRequestProperty("Connection", "Keep-Alive");// 维持长连接
            conn.setRequestProperty("Charset", "UTF-8");
            conn.setRequestProperty("Content-Length",
                    String.valueOf(xmlbyte.length));
            conn.setRequestProperty("Content-Type", "text/xml; charset=UTF-8");
            conn.setRequestProperty("X-ClientType", "2");//发送自定义的头信息

            conn.getOutputStream().write(xmlbyte);
            conn.getOutputStream().flush();
            conn.getOutputStream().close();


            if (conn.getResponseCode() != 200)
                throw new RuntimeException("请求url失败");

            InputStream is = conn.getInputStream();// 获取返回数据
              

              // 使用输出流来输出字符(可选)
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            byte[] buf = new byte[1024];
            int len;
            while ((len = is.read(buf)) != -1) {
                out.write(buf, 0, len);
            }
            String string = out.toString("UTF-8");
            System.out.println(string);
            out.close();
                 
                     
            // xml解析
            String version = null;
            String seqID = null;
            XmlPullParser parser = Xml.newPullParser();
            try {
                parser.setInput(new ByteArrayInputStream(string.substring(1)
                        .getBytes("UTF-8")), "UTF-8");
                 parser.setInput(is, "UTF-8");
                int eventType = parser.getEventType();
                while (eventType != XmlPullParser.END_DOCUMENT) {
                    if (eventType == XmlPullParser.START_TAG) {
                        if ("SSOMessage".equals(parser.getName())) {
                            version = parser.getAttributeValue(0);
                        } else if ("SeqID".equals(parser.getName())) {
                            seqID = parser.nextText();
                        } else if ("ResultCode".equals(parser.getName())) {
                            resultCode = parser.nextText();
                        }
                    }
                    eventType = parser.next();
                }
            } catch (XmlPullParserException e) {
                e.printStackTrace();
                System.out.println(e);
            } catch (IOException e) {
                e.printStackTrace();
                System.out.println(e);
            }
            System.out.println("version = " + version);
            System.out.println("seqID = " + seqID);
            System.out.println("resultCode = " + resultCode);*/

        } catch (Exception e) {
            // TODO Auto-generated catch block
            System.out.println(e);
        }
    }

简单讲讲，其实就是HttpURLConnection 的http请求头部设置和xml数据相关的内容，比较重要的是conn.setRequestProperty("Content-Length",String.valueOf(xmlbyte.length));数据长度为xml字符串的长度。conn.getOutputStream().write(xmlbyte);直接发送xml数据。最后解析返回的xml数据，我之前写了如何解析xml数据的博客，大家可以看看。

二.通过httpClient Post方式提交xml

也直接举一个例子：

package com.javaeye.wangking717.util;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;

public class HttpConnectionUtil {

	private final static Log logger = LogFactory.getLog(HttpConnectionUtil.class);

	public static String postSOAP(String url, String soapContent) {

		HttpClient httpclient = null;
		HttpPost httpPost = null;
		BufferedReader reader = null;
		int i = 0;

		while (i < 4) {
			try {
				httpclient = new DefaultHttpClient();
				httpPost = new HttpPost(url);
				StringEntity myEntity = new StringEntity(soapContent, "UTF-8");
				httpPost.addHeader("Content-Type", "text/xml; charset=UTF-8");
				httpPost.setEntity(myEntity);
				HttpResponse response = httpclient.execute(httpPost);
				HttpEntity resEntity = response.getEntity();
				if (resEntity != null) {
					reader = new BufferedReader(new InputStreamReader(resEntity
							.getContent(), "UTF-8"));
					StringBuffer sb = new StringBuffer();
					String line = null;
					while ((line = reader.readLine()) != null) {
						sb.append(line);
						sb.append("\r\n");
					}
					return sb.toString();
				}

			} catch (Exception e) {
				i++;
				if (i == 4) {
					logger.error("not connect:" + url + "\n" + e.getMessage());
				}
			} finally {
				if (httpPost != null) {
					httpPost.abort();
				}
				if (reader != null) {
					try {
						reader.close();
					} catch (IOException e) {
						e.printStackTrace();
					}
				}
				if (httpclient != null) {
					httpclient.getConnectionManager().shutdown();
				}
			}
		}
		return "none";
	}
	
	public static void main(String[] args) {
		String url = "http://localhost:8080/opgtest/servlet/MyTest";
		String soap = "\r\n"
						+ "\r\n"
							+ "传递过来的内容\r\n" 
						+ "\r\n"
					+ "";
		System.out.println(postSOAP(url, soap));

	}

}

也简单讲讲，主要是通过StringEntity stringEntity = new StringEntity(xml,"UTF-8");将xml数据变成StringEntity ，然后通过httpPost.setEntity(stringEntity);将StringEntity设置到httpPost。最后直接response = httpclient.execute(httpPost);发送数据。这个比起HttpURLConnection要简单很多，建议使用这一种代码。

android http通过post请求发送一个xml就讲完了。

就这么简单。