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HttpClient4 Post XML数据

2012-04-20 17:02 381 查看

最近项目中用到SOAP，要求客户端POST SOAP数据过去，整理一下自己写的东西。

POST XML一般有两种方法，一种是指定参数名，将该参数来进行XML数据的传输，这是最常用的一种方式。

这次我想说明的另外一种，直接将XML数据以流的方式写入请求。

Servlet POST方法中来接受传送过来的XML流：

public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

response.setContentType("text/xml");
response.setCharacterEncoding("UTF-8");
PrintWriter out = response.getWriter();
System.out.println("----------------------");
BufferedReader reader = new BufferedReader(new InputStreamReader(request.getInputStream(), "UTF-8"));
String line = null;
StringBuffer sb = new StringBuffer();
while ((line = reader.readLine()) != null) {
sb.append(line).append("\r\n");
}
System.out.println(sb.toString());
System.out.println("----------------------");
out.print(sb.toString());
out.flush();
out.close();
}

Client端POST XML过去：

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));

}

}

OK,大功告成，很简单吧。

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标签： xml soap string null url exception

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