用java代码发送http请求的工具类

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;

public class HttpUtil {
	/**
	 * java代码发送get请求
	 * @param url
	 * @return
	 */
	public static String sendGet(String url){
		// 获取httpClient对象
		DefaultHttpClient httpClient = new DefaultHttpClient();
		// 获取请求对象
		HttpGet httpGet = new HttpGet();
		
		String result = null;
		// 通过client发送get请求
		try {
			HttpResponse response = httpClient.execute(httpGet);
			// 获得状态码  200 成功      404 为找到路径         500 后台程序错误  。。。。
			int statusCode = response.getStatusLine().getStatusCode();
			
			HttpEntity entity = response.getEntity();
			
			result = EntityUtils.toString(entity,"UTF-8");
		} catch (Exception e) {
			e.printStackTrace();
		}
		return result;
	}
	/**
	 * 
	 * @param url
	 * @return
	 */
	public static String sendPost(String url,String params){
		// 获取httpClient对象
		DefaultHttpClient httpClient = new DefaultHttpClient();
		// 获取请求对象
		HttpPost httpPost = new HttpPost();
		
		String result = null;
		// 通过client发送post请求
		try {
			// 设置将参数传递过去
			httpPost.setEntity(new StringEntity(params,"UTF-8"));
			
			HttpResponse response = httpClient.execute(httpPost);
			// 获得状态码  200 成功      404 为找到路径         500 后台程序错误  。。。。
			int statusCode = response.getStatusLine().getStatusCode();
			
			HttpEntity entity = response.getEntity();
			
			result = EntityUtils.toString(entity);
		} catch (Exception e) {
			e.printStackTrace();
		}
		return result;
	}
}