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支持跨域，提供在线HTTP请求模拟器，支持请求类型有POST、GET、DELETE、PUT、UPDATE请求.

Demo预览。http://www.sojson.com/httpRequest/

package com.sojson.httprequest.manager;

import java.net.InetAddress;
import java.net.SocketTimeoutException;
import java.net.UnknownHostException;
import java.util.HashMap;
import java.util.Map;

import org.apache.commons.httpclient.Header;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpMethodBase;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.cookie.CookiePolicy;
import org.apache.commons.httpclient.methods.DeleteMethod;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.HeadMethod;
import org.apache.commons.httpclient.methods.OptionsMethod;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.PutMethod;
import org.apache.commons.httpclient.methods.TraceMethod;
import org.apache.commons.httpclient.params.HttpMethodParams;
import org.apache.http.params.CoreConnectionPNames;

import com.sojson.common.utils.LoggerUtils;
import com.sojson.common.utils.StringUtils;
import com.sojson.httprequest.bo.HttpRequestBo;
/**
 * 
 * 开发公司：sojson.com<br/>
 * 版权：sojson.com<br/>
 * <p>
 * 
 * HTTP模拟请求
 * 
 * <p>
 * 
 * 区分　责任人　日期　　　　说明<br/>
 * 创建　周柏成　2016年4月15日 　<br/>
 * <p>
 * *******
 * <p>
 * @author zhou-baicheng
 * @email  json@sojson.com
 * @version 1.0,2016年1月15日 <br/>
 * 
 */
public class HttpManager {

	/**
	 * 模拟各种Http请求
	 * @param bo
	 * @return
	 */
	@SuppressWarnings("deprecation")
	public static Map<String,Object> request(HttpRequestBo bo){
		
		Map<String,Object> map = new HashMap<String,Object>();
		double begin = System.currentTimeMillis();
		String type = bo.getType();
		String url  = bo.getUrl();
		HttpMethodBase method = null;
		try {
			//匹配请求
			if("Post".equals(type)){
				method = new PostMethod(url);
			}else if("Get".equals(type)){
				method = new GetMethod(url);
			}else if("Delete".equals(type)){
				method = new DeleteMethod(url);
			}else if("Put".equals(type)){
				method = new PutMethod(url);
			}else if("Trace".equals(type)){
				method = new TraceMethod(url);
			}else if("Head".equals(type)){
				method = new HeadMethod(url);
			}else if("Options".equals(type)){
				method = new OptionsMethod(url);
			}
			
			HttpClient client = new HttpClient();
			//请求超时
			client.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 556000); 
			//读取超时
			client.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, 555000);
			client.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET,"UTF-8");
			client.getParams().setCookiePolicy(CookiePolicy.BROWSER_COMPATIBILITY);
			
			method.setRequestHeader("Connection","close");
			method.setRequestHeader("Referer", 
						"http://www.sojson.com");
			method.setRequestHeader("User-Agent", 
						"Mozilla/5.0 (Windows NT 6.1; WOW64; rv:42.0) Gecko/20100101 Firefox/42.0");
	
			//设置参数
			String[] keys = bo.getKeys(),values = bo.getValues();
			if(StringUtils.isNotBlank(keys,values)){
				NameValuePair[] params = new NameValuePair[keys.length];
				for (int i = 0; i < keys.length; i++) {
					params[i] = new NameValuePair(keys[i], values[i]);
				}
				method.setQueryString(params);
			}
			//设置请求头 和上面方法一致，如果一样，那么就覆盖。
			String[] headKeys = bo.getHeadKeys(),headValues = bo.getHeadValues();
			for (int i = 0;StringUtils.isNotBlank(headKeys,headValues) && i < headKeys.length; i++) {
				method.setRequestHeader(headKeys[i], headValues[i]);
			}
			
			int status = client.executeMethod(method);
			map.put("status",status);
			
			Header[] heads = method.getResponseHeaders();
			//获取请求的Host，用于IP解析
			String host = method.getHostConfiguration().getHost();
			
			StringBuffer sb = new StringBuffer("");
			for (Header header : heads) {
					sb.append(header.getName())
						.append(" : ")
							.append(header.getValue())
								.append("\r\n");
			}
			//头信息
			map.put("head", sb.toString());
			String result = method.getResponseBodyAsString();
			map.put("result", result);
			String ip = "未知";
			try {
				InetAddress iAddress=InetAddress.getByName(host);
				ip = iAddress.getHostAddress();
				map.put("host", ip);
			} catch (Exception e) {
				LoggerUtils.fmtError(HttpManager.class, e, "获取IP地址失败，域名:[%s]", host);
			}
		} catch (UnknownHostException e) {
			//域名错误
			map.put("message", "请输入正确的网址");
			LoggerUtils.fmtError(HttpManager.class, e, "网址异常[%s]", url);
		} catch (SocketTimeoutException e) {
			//超时
			map.put("message", "请求地址超时");
			LoggerUtils.fmtError(HttpManager.class, e, "请求地址超时[%s]", url);
		} catch (Exception e) {
			//其他异常
			map.put("message", "请求出现未知异常，请重试！");
			LoggerUtils.fmtError(HttpManager.class, e, "请求出现未知异常，请重试！[%s]", url);
		}
		double end = System.currentTimeMillis();
		map.put("time", (end - begin) / 1000);
		return map;
		
	}
}