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：
<?xml version = “1.0” ?> <SSOMessage version=”1.0”> <SSOParas> <SeqID>SeqID</SeqID> <CommandID>CommandID</CommandID> <MSISDN>ABSCDSDF</MSISDN> <ChargeMSISDN>ChargeMSISDN</ChargeMSISDN> <SPID>SPID</SPID> <Code> Code </ Code > < IDtype > IDtype 0</ IDtype > <ID> ID 0</ID> </SSOParas> </SSOMessage>
返回的xml数据为：
<?xml version = “1.0” ?> <SSOMessage version=”1.0”> <SSOParas> <SeqID>SeqID</SeqID> <ResultCode>ResultCode0</ResultCode> </SSOParas> </SSOMessage>
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 version=\"1.0\" encoding=\"UTF-8\"?>");
xml.append("<SSOMessage version=\"1.0\">");
xml.append("<SSOParas>");
xml.append("<SeqID>13333333333</SeqID>");
xml.append("<CommandID>1</CommandID>");
xml.append("<MSISDN>1333333333</MSISDN>");
xml.append("<ChargeMSISDN>1333333333</ChargeMSISDN>");
xml.append("<SPID>3510127</SPID>");
xml.append("<Code></Code>");
xml.append("<IDtype>0</IDtype>");
xml.append("<ID>135000000000000216559</ID>");
xml.append("</SSOParas>");
xml.append("</SSOMessage>");
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 = "<xml>\r\n"
+ "<body>\r\n"
+ "传递过来的内容\r\n"
+ "</body>\r\n"
+ "</xml>";
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。