httpclient向服务器POST XML字符串

一、使用 HttpClient 需要如下做法

 

1、 创建 HttpClient 的实例

2、 创建POST连接方法的实例

3、 调用client的 execute 方法来执行第二步中创建好的 method 实例

4、 读 response

5、 释放连接。无论执行方法是否成功，都必须释放连接

6、 对得到后的内容进行处理

 

二、创建处理上传处理的类UploadManager.java

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.methods.PostMethod;

public class UploadManager {
	HttpClient client = new HttpClient();
	PostMethod method = new PostMethod(){
	      public String getRequestCharSet() {
		    return "GBK";
	}};
		
	List<NameValuePair> params = new ArrayList<NameValuePair>();
	String host;
	String path;
	int port;

	public UploadManager setURL(String host, String path, int port) {
		this.host = host;
		this.path = path;
		this.port = port;
		client.getHostConfiguration().setHost(host, port, "http");
		method.setPath(path);
		return this;
	}

	public UploadManager addParam(String key, String value) {
		params.add(new NameValuePair(key, value));
		return this;
	}

	public boolean upload() {
		try {
                //将NameValuePair表单的值放入postMethod中			
                method.setRequestBody(params.toArray(new NameValuePair[params.size()]));
			int statusCode = client.executeMethod(method);
			String response = method.getResponseBodyAsString();
			if(response.startsWith("SUCESS"))
				return true;
		}catch (HttpException e) {
                       //发生致命的异常，可能是协议不对或者返回的内容有问题
                       System.out.println("Please check your provided http address!");
                       e.printStackTrace();
               }catch (IOException e) {
                       //发生网络异常
			e.printStackTrace();
		} finally {
			params.clear();
			method.releaseConnection();
		}
		return false;
	}
}