HttpClient3发送http/https协议get/post请求，发送map代码,Java代码库,德仔网

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【Java】 HttpClient3发送http/https协议get/post请求，发送map
作者: / 发布于2017/9/25/ 295
用的是httpclient 3.1，
使用"httpclient"4的写法相对简单点，百度：httpclient https post
 
当不需要使用任何证书访问https网页时，只需配置信任任何证书
其中信任任何证书的类MySSLProtocolSocketFactory
 
主要代码：
HttpClient client = new HttpClient();    
Protocol myhttps = new Protocol("https", new MySSLProtocolSocketFactory(), 443);   
Protocol.registerProtocol("https", myhttps);
PostMethod method = new PostMethod(url);

package com.urthinker.wxyh.util;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Map;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpMethod;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.URIException;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.RequestEntity;
import org.apache.commons.httpclient.methods.StringRequestEntity;
import org.apache.commons.httpclient.params.HttpMethodParams;
import org.apache.commons.httpclient.protocol.Protocol;
import org.apache.commons.httpclient.util.URIUtil;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
  
/**   
* HTTP工具类
* 发送http/https协议get/post请求，发送map，json，xml，txt数据
*   
* @author happyqing 2016-5-20  
*/    
public final class HttpUtil {    
        private static Log log = LogFactory.getLog(HttpUtil.class);    
  
        /**
         * 执行一个http/https get请求，返回请求响应的文本数据
         * 
         * @param url			请求的URL地址
         * @param queryString	请求的查询参数,可以为null
         * @param charset		字符集
         * @param pretty		是否美化
         * @return				返回请求响应的文本数据
         */
        public static String doGet(String url, String queryString, String charset, boolean pretty) {   
                StringBuffer response = new StringBuffer();
                HttpClient client = new HttpClient();
                if(url.startsWith("https")){
                	//https请求
                	Protocol myhttps = new Protocol("https", new MySSLProtocolSocketFactory(), 443);   
                	Protocol.registerProtocol("https", myhttps);
                }
                HttpMethod method = new GetMethod(url);
                try {
                        if (StringUtils.isNotBlank(queryString))    
                        	//对get请求参数编码，汉字编码后，就成为%式样的字符串
                            method.setQueryString(URIUtil.encodeQuery(queryString));
                        client.executeMethod(method);
                        if (method.getStatusCode() == HttpStatus.SC_OK) {
                            BufferedReader reader = new BufferedReader(new InputStreamReader(method.getResponseBodyAsStream(), charset));
                            String line;
                            while ((line = reader.readLine()) != null) {
                                if (pretty)
                                    response.append(line).append(System.getProperty("line.separator"));
                                else
                                    response.append(line);
                            }
                            reader.close();
                        }
                } catch (URIException e) {
                	log.error("执行Get请求时，编码查询字符串“" + queryString + "”发生异常！", e);
                } catch (IOException e) {
                	log.error("执行Get请求" + url + "时，发生异常！", e);
                } finally {
                	method.releaseConnection();
                }
                return response.toString();
        }    
  
        /**
         * 执行一个http/https post请求，返回请求响应的文本数据
         * 
         * @param url		请求的URL地址
         * @param params	请求的查询参数,可以为null
         * @param charset	字符集
         * @param pretty	是否美化
         * @return			返回请求响应的文本数据
         */
        public static String doPost(String url, Map<String, String> params, String charset, boolean pretty) {
                StringBuffer response = new StringBuffer();
                HttpClient client = new HttpClient();
                if(url.startsWith("https")){
                	//https请求
	                Protocol myhttps = new Protocol("https", new MySSLProtocolSocketFactory(), 443);
	            	Protocol.registerProtocol("https", myhttps);
                }
                PostMethod method = new PostMethod(url);
                //设置参数的字符集
                method.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET,charset);
                //设置post数据
                if (params != null) {
                    //HttpMethodParams p = new HttpMethodParams();    
                    for (Map.Entry<String, String> entry : params.entrySet()) {
                        //p.setParameter(entry.getKey(), entry.getValue());   
                        method.setParameter(entry.getKey(), entry.getValue());
                    }
                    //method.setParams(p);
                }
                try {
                        client.executeMethod(method);
                        if (method.getStatusCode() == HttpStatus.SC_OK) {
                            BufferedReader reader = new BufferedReader(new InputStreamReader(method.getResponseBodyAsStream(), charset));
                            String line;
                            while ((line = reader.readLine()) != null) {
                                if (pretty)
                                    response.append(line).append(System.getProperty("line.separator"));
                                else
                                    response.append(line); 
                            }
                            reader.close();
                        }
                } catch (IOException e) {
                	log.error("执行Post请求" + url + "时，发生异常！", e);
                } finally {
                	method.releaseConnection();
                }
                return response.toString();
        }
        
        /**
         * 执行一个http/https post请求， 直接写数据 json,xml,txt
         * 
         * @param url		请求的URL地址
         * @param params	请求的查询参数,可以为null
         * @param charset	字符集
         * @param pretty	是否美化
         * @return			返回请求响应的文本数据
         */
        public static String writePost(String url, String content, String charset, boolean pretty) { 
                StringBuffer response = new StringBuffer();
                HttpClient client = new HttpClient();
                if(url.startsWith("https")){
                	//https请求
                	Protocol myhttps = new Protocol("https", new MySSLProtocolSocketFactory(), 443);
                	Protocol.registerProtocol("https", myhttps);
                }
            	PostMethod method = new PostMethod(url);
                try {
                		//设置请求头部类型参数
                		//method.setRequestHeader("Content-Type","text/plain; charset=utf-8");//application/json,text/xml,text/plain
                		//method.setRequestBody(content); //InputStream,NameValuePair[],String
                		//RequestEntity是个接口，有很多实现类，发送不同类型的数据
                		RequestEntity requestEntity = new StringRequestEntity(content,"text/plain",charset);//application/json,text/xml,text/plain
                		method.setRequestEntity(requestEntity);
                        client.executeMethod(method);
                        if (method.getStatusCode() == HttpStatus.SC_OK) {  
                            BufferedReader reader = new BufferedReader(new InputStreamReader(method.getResponseBodyAsStream(), charset));
                            String line;
                            while ((line = reader.readLine()) != null) {
                                if (pretty)
                                    response.append(line).append(System.getProperty("line.separator"));
                                else
                                    response.append(line);
                            }
                            reader.close();
                        }    
                } catch (Exception e) {
                	log.error("执行Post请求" + url + "时，发生异常！", e);
                } finally {
                	method.releaseConnection();
                }
                return response.toString();
        }
  
        public static void main(String[] args) {
        	try {
                String y = doGet("http://video.sina.com.cn/life/tips.html", null, "GBK", true);
                System.out.println(y);
//              Map params = new HashMap();
//              params.put("param1", "value1");
//              params.put("json", "{\"aa\":\"11\"}");
//              String j = doPost("http://localhost/uplat/manage/test.do?reqCode=add", params, "UTF-8", true);
//              System.out.println(j);

			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
        }

}
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