JAVA发送HTTP请求

来源：互联网发布：2017年淘宝双12新玩法编辑：程序博客网时间：2024/06/06 07:32
package oa.api.all;import java.util.*;import org.apache.http.*;import org.apache.http.client.HttpClient;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.client.methods.*;import org.apache.http.entity.StringEntity;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.message.BasicNameValuePair;import org.apache.http.util.EntityUtils;import org.json.*;@SuppressWarnings("deprecation")public class Request {    private String result;    private HttpClient http_client = new DefaultHttpClient();    /*发送get请求     * @param request_url请求url     * @param request_header请求头（map）     * */    public String set_get_request(String request_url, Map<String, String> request_header){        try{            HttpGet get_request = new HttpGet(request_url);            //发送请求头            Set<String> set = request_header.keySet();            Iterator<String> iter = set.iterator();            while (iter.hasNext()) {                String key = iter.next().toString();                String value = request_header.get(key);                get_request.setHeader(key,value);            }            //获取请求响应            HttpResponse get_response = http_client.execute(get_request);            HttpEntity get_entity = get_response.getEntity();            result = EntityUtils.toString(get_entity);        }        catch(Exception e){            System.out.println(e);        }        return result;    }    /*发送post请求     * 请求体有四种格式     * @param request_url 请求url     * @param request_header请求头（map）     * @param request_body 为json格式的字符串数据     * @param type,请求类型，1：json；2：form-data     * */    public String set_post_request(String request_url, Map<String, String> request_header, String request_body, int type){        try{            HttpPost post_request = new HttpPost(request_url);            //发送请求头            Set<String> set = request_header.keySet();            Iterator<String> iter = set.iterator();            while (iter.hasNext()) {                String key = iter.next().toString();                String value = request_header.get(key);                post_request.setHeader(key,value);            }            //发送请求体            JSONObject json_obj = new JSONObject(request_body);            System.out.println(json_obj);            //发送 json 格式的请求体            if(type==1){                StringEntity s = new StringEntity(json_obj.toString());                post_request.setEntity(s);            }            //发送form-data格式的请求体            else if(type==2){                List<NameValuePair> form_params = new ArrayList<NameValuePair>();                //List formParams = new ArrayList();                Iterator<String> it = json_obj.keys();                  // 遍历jsonObject数据，添加到Map对象                  while (it.hasNext())                  {                         String key = String.valueOf(it.next());                         String value = (String) json_obj.get(key);                       form_params.add(new BasicNameValuePair(key, value));                 }                HttpEntity entity = new UrlEncodedFormEntity(form_params, "UTF-8");                post_request.setEntity(entity);            }            //获取请求响应            HttpResponse get_response = http_client.execute(post_request);            HttpEntity get_entity = get_response.getEntity();            result = EntityUtils.toString(get_entity);        }        catch(Exception e){            System.out.println(e);        }        return result;    }}
2 0