httpclient实现的get请求及post请求

导出mven依赖

      <dependency>
      <groupId>org.apache.httpcomponents</groupId>
      <artifactId>httpclient</artifactId>
      <version>4.5.6</version>
    </dependency>

package testhttpclient.testhttpclient;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpHost;
import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.ParseException;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.impl.client.BasicCookieStore;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

public class HttpClientComm {

    /**
     * 客户端总成
     */
    protected CloseableHttpClient httpclient;
    /**
     * cookie信息
     */
    protected Set<String>cookies;
    /**
     * get方法
     */
    protected HttpGet httpget;
    /**
     * post方法
     */
    protected HttpPost httppost;
    /**
     * 代理
     */
    protected HttpHost proxy;
    /**
     * 设置默认延迟时间
     */
    protected RequestConfig requestconfig;
    /**
     * 返回存储数据map
     */
    protected Map<String,String>resultmap;

    /**
     * 响应状态
     */
    public final String HTTPSTATUS="status";
    /**
     * 返回数据结果
     */
    public final String HTTPRESULT="httpresult";
/**
 * 初始化客户端
 */
    public HttpClientComm() {
        httpclient=HttpClients.createDefault();
        requestconfig=RequestConfig.custom().setConnectionRequestTimeout(10*1000).setSocketTimeout(10*1000).build();
        cookies=new HashSet<String>(16);
    }
    /**
     * 初始化请求，设置请求时间
     * @param millistimeout
     */
    public HttpClientComm(int millistimeout) {
        httpclient=HttpClients.createDefault();
        requestconfig=RequestConfig.custom().setConnectionRequestTimeout(10*1000).setSocketTimeout(10*1000).build();
        cookies=new HashSet<String>(16);
    }
    /**
     * 设置代理
     *
     * @Data:上午11:02:43
     * @Package:testhttpclient.testhttpclient
     * @Return:void
     * @Auth:diao
     */
    public void setProxy(String Address,int port)
    {
        proxy=new HttpHost(Address, port);
        requestconfig=RequestConfig.custom().setProxy(proxy).build();
    }
    /**
     * 释放请求资源
     *
     * @Data:上午11:03:27
     * @Package:testhttpclient.testhttpclient
     * @Return:void
     * @Auth:diao
     */
    public void close()
    {
        if(cookies!=null)
        {
            cookies=null;
        }
        if(proxy!=null)
        {
            proxy=null;
        }
        if(resultmap!=null)
        {
            resultmap=null;
        }
        if(httpget!=null)
        {
            httpget.releaseConnection();
        }
        if(httppost!=null)
        {
            httppost.releaseConnection();
        }
        if(httpclient!=null)
        {
            try {
                httpclient.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }finally {
                httpclient=null;
            }
        }
    }
    /**
     *
     * get请求传递的连接，请求头
     * @Data:上午11:15:10
     * @Package:testhttpclient.testhttpclient
     * @Return:Map<String,String>
     * @Auth:diao
     */
    public Map<String,String>get(String url,Map<String,String>headers){
        httpget=new HttpGet(url);
        httpget.setConfig(requestconfig);
        headers.forEach((a,b)->{
            httpget.addHeader(a, b);
        });
        httpget.addHeader("cookie",cookies.toString().substring(1,cookies.toString().length()-1));

        CloseableHttpResponse respose=null;

        try {
            respose=httpclient.execute(httpget);
        } catch (ClientProtocolException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return getResData(respose, httpget);
    }
    /**
     * post请求方式
     *
     * @Data:下午2:01:15
     * @Package:testhttpclient.testhttpclient
     * @Return:Map<String,String>
     * @Auth:diao
     */
    public Map<String,String>post(String url,Map<String,String>headers,Map<String,String>params,String charset) throws UnsupportedEncodingException
    {
        //设置请求方法及连接信息
        httppost=new HttpPost(url);
        //设置请求参数
        httppost.setConfig(requestconfig);
        //设置请求头
        headers.forEach((a,b)->{
            httpget.addHeader(a, b);
        });
        BasicCookieStore cookie=new BasicCookieStore();
        HttpClients.custom().setDefaultCookieStore(cookie).build();
        httppost.addHeader("cookie",cookies.toString().substring(1,cookies.toString().length()-1));
        List<NameValuePair>pairs=null;
        if(params!=null&&!params.isEmpty())
        {
            pairs=new ArrayList<NameValuePair>(params.size());
            for(String key:params.keySet())
            {
                pairs.add(new BasicNameValuePair(key,params.get(key).toString()));
            }
        }
        if(pairs!=null&&pairs.size()>0)
        {
            httppost.setEntity(new UrlEncodedFormEntity(pairs,charset));
        }
        //执行请求
        HttpResponse response=null;
        try {
            response=httpclient.execute(httppost);
        } catch (ClientProtocolException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return getResData(response, httppost);
    }

    /**
     * 处理http结果请求
     *
     * @Data:下午1:42:28
     * @Package:testhttpclient.testhttpclient
     * @Return:Map<String,String>
     * @Auth:diao
     */
    public Map<String,String> getResData(HttpResponse response,HttpRequestBase requestbase)
    {
        int status=405;
        if(response!=null)
        {
            status=response.getStatusLine().getStatusCode();
            for(Header header:response.getAllHeaders())
            {
                if("Set-Cookie".equalsIgnoreCase(header.getName()))
                {
                    cookies.add(header.getValue());
                }
            }
        }
        resultmap=new HashMap<>(16);
        resultmap.put(HTTPRESULT,status+"");
        resultmap.put(HTTPRESULT, null);
        if(status!=HttpStatusEnum.OK.code())
        {
            requestbase.abort();
        }else {
            HttpEntity entity= response.getEntity();
            if(entity!=null)
            {
                try {
                    String data=EntityUtils.toString(entity,"utf-8");

                    String start="[",end="]";
                    if(data.startsWith(start))
                    {
                        data=data.substring(1);
                    }
                    if(data.endsWith(end))
                    {
                        data=data.substring(0,data.length()-1);
                    }
                    data=data.replaceAll("\\\\t|\\\\n|\\r\\n","");
                    data=data.replaceAll("\\\\/","/");
                    data=decodeUnicode(data);
                    resultmap.put(HTTPRESULT, data);
                    //关闭流
                    EntityUtils.consume(entity);
                } catch (ParseException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                response=null;
            }
        }
        return resultmap;
    }
    /**
     * unicode转中文
     *
     * @Data:下午1:44:16
     * @Package:testhttpclient.testhttpclient
     * @Return:String
     * @Auth:diao
     */
    public static String decodeUnicode(final String dataStr) {
        int start = 0;
        int end = 0;
        final StringBuffer buffer = new StringBuffer();
        while (start > -1) {
            end = dataStr.indexOf("\\u", start + 2);
            String charStr = "";
            if (end == -1) {
                charStr = dataStr.substring(start + 2, dataStr.length());
            } else {
                charStr = dataStr.substring(start + 2, end);
            }
         // 16进制parse整形字符串。
            char letter = (char) Integer.parseInt(charStr, 16);
            buffer.append(new Character(letter).toString());
            start = end;
        }
        return buffer.toString();
    }
    /**
     * 获取请求头
     *
     * @Data:下午1:44:16
     * @Package:testhttpclient.testhttpclient
     * @Return:String
     * @Auth:diao
     */
   public Map<String,String>getCommHeader(){
        Map<String,String>headers=new HashMap<String, String>(16);
        headers.put("User-Agent","Mozilla/5.0(Window NT 6.1; WOW64; rv:58.0) Gecko/20100101 Firfox/58.0");
        headers.put("Accept","application/json,text/plain,*/*");
        headers.put("Accept-Language","zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2");
        headers.put("Accept-Encoding","gzip,deflate");
        headers.put("Connection","keep-alive");
        return headers;
    }

  public void test(String ip,int port,String jobid)
   {
       String url=String.format("http://%s:%d/jobs/%s/yarn-cancel",ip,port,jobid);
       HttpClientComm httpclient=new HttpClientComm();
       Map<String,String>header=new HashMap<String, String>(16);
       header.put("Host",ip+":"+port);
       header.put("Referer","http://"+ip+":"+port);
       Map<String,String>Resultmap=httpclient.get(url, header);
       String httpstatus=Resultmap.get(httpclient.HTTPSTATUS);
       String resultmap=Resultmap.get(httpclient.HTTPRESULT);
       if(httpstatus.isEmpty()&&HttpStatusEnum.ACCEPTED.code()==Integer.parseInt(httpstatus))
       {
           //json解析

       }
   }

}

所有状态枚举类

package testhttpclient.testhttpclient;

/**
 *
 * @author sdzw
 *
 */
public enum HttpStatusEnum {
    /**
     * 请继续发送请求的剩余部分
     */
    CONTINUE(100, "Continue", "请继续发送请求的剩余部分"), 

    SWITCHING_PROTOCOLS(101, "Switching Protocols", "协议切换"),

    PROCESSING(102, "Processing", "请求将继续执行"), 

    // for 103 https://news.ycombinator.com/item?id=15590049
    CHECKPOINT(103, "Checkpoint", "可以预加载"), 

    OK(200, "OK", "请求已经成功处理"), 

    CREATED(201, "Created", "请求已经成功处理，并创建了资源"), 

    ACCEPTED(202, "Accepted", "请求已经接受，等待执行"),

    NON_AUTHORITATIVE_INFORMATION(203, "Non-Authoritative Information", "请求已经成功处理，但是信息不是原始的"), 

    NO_CONTENT(204, "No Content", "请求已经成功处理，没有内容需要返回"),

    RESET_CONTENT(205, "Reset Content", "请求已经成功处理，请重置视图"),

    PARTIAL_CONTENT(206, "Partial Content", "部分Get请求已经成功处理"),

    MULTI_STATUS(207, "Multi-Status", "请求已经成功处理，将返回XML消息体"),

    ALREADY_REPORTED(208, "Already Reported", "请求已经成功处理，一个DAV的绑定成员被前一个请求枚举，并且没有被再一次包括"), 

    IM_USED(226, "IM Used", "请求已经成功处理，将响应一个或者多个实例"), 

    MULTIPLE_CHOICES(300, "Multiple Choices", "提供可供选择的回馈"),

    MOVED_PERMANENTLY(301, "Moved Permanently", "请求的资源已经永久转移"),

    FOUND(302, "Found", "请重新发送请求"), 

    // MOVED_TEMPORARILY(302, "Moved Temporarily", "") 已经过时
    SEE_OTHER(303, "See Other", "请以Get方式请求另一个URI"), 

    NOT_MODIFIED(304, "Not Modified", "资源未改变"),

    USE_PROXY(305, "Use Proxy", "请通过Location域中的代理进行访问"),

    // 306在新版本的规范中被弃用 TEMPORARY_REDIRECT(307, "Temporary Redirect", "请求的资源临时从不同的URI响应请求"),
    RESUME_INCOMPLETE(308, "Resume Incomplete", "请求的资源已经永久转移"), 

    BAD_REQUEST(400, "Bad Request", "请求错误，请修正请求"), 

    UNAUTHORIZED(401, "Unauthorized", "没有被授权或者授权已经失效"), 

    PAYMENT_REQUIRED(402, "Payment Required", "预留状态"), 

    FORBIDDEN(403, "Forbidden", "请求被理解，但是拒绝执行"), 

    NOT_FOUND(404, "Not Found", "资源未找到"), 

    METHOD_NOT_ALLOWED(405, "Method Not Allowed", "请求方法不允许被执行"), 

    NOT_ACCEPTABLE(406, "Not Acceptable", "请求的资源不满足请求者要求"), 

    PROXY_AUTHENTICATION_REQUIRED(407, "Proxy Authentication Required", "请通过代理进行身份验证"), 

    REQUEST_TIMEOUT(408, "Request Timeout", "请求超时"), 

    CONFLICT(409, "Conflict", "请求冲突"), GONE(410, "Gone", "请求的资源不可用"), 

    LENGTH_REQUIRED(411, "Length Required", "Content-Length未定义"), 

    PRECONDITION_FAILED(412, "Precondition Failed", "不满足请求的先决条件"), 

    REQUEST_ENTITY_TOO_LARGE(413, "Request Entity Too Large", "请求发送的实体太大"), 

    REQUEST_URI_TOO_LONG(414, "Request-URI Too Long", "请求的URI超长"), 

    UNSUPPORTED_MEDIA_TYPE(415, "Unsupported Media Type", "请求发送的实体类型不受支持"), 

    REQUESTED_RANGE_NOT_SATISFIABLE(416, "Requested range not satisfiable", "Range指定的范围与当前资源可用范围不一致"), 

    EXPECTATION_FAILED(417, "Expectation Failed", "请求头Expect中指定的预期内容无法被服务器满足"), 

    LOCKED(423, "Locked", "当前资源被锁定"), 

    FAILED_DEPENDENCY(424, "Failed Dependency", "由于之前的请求发生错误，导致当前请求失败"), 

    UPGRADE_REQUIRED(426, "Upgrade Required", "客户端需要切换到TLS1.0"), 

    PRECONDITION_REQUIRED(428, "Precondition Required", "请求需要提供前置条件"), 

    TOO_MANY_REQUESTS(429, "Too Many Requests", "请求过多"), 

    REQUEST_HEADER_FIELDS_TOO_LARGE(431, "Request Header Fields Too Large", "请求头超大，拒绝请求"), 

    INTERNAL_SERVER_ERROR(500, "Internal Server Error", "服务器内部错误"), 

    NOT_IMPLEMENTED(501, "Not Implemented", "服务器不支持当前请求的部分功能"), 

    BAD_GATEWAY(502, "Bad Gateway", "响应无效"), 

    SERVICE_UNAVAILABLE(503, "Service Unavailable", "服务器维护或者过载，拒绝服务"), 

    GATEWAY_TIMEOUT(504, "Gateway Timeout", "上游服务器超时"), 

    HTTP_VERSION_NOT_SUPPORTED(505, "HTTP Version not supported", "不支持的HTTP版本"), 

    VARIANT_ALSO_NEGOTIATES(506, "Variant Also Negotiates", "服务器内部配置错误"), 

    INSUFFICIENT_STORAGE(507, "Insufficient Storage", "服务器无法完成存储请求所需的内容"), 

    LOOP_DETECTED(508, "Loop Detected", "服务器处理请求时发现死循环"),

    BANDWIDTH_LIMIT_EXCEEDED(509, "Bandwidth Limit Exceeded", "服务器达到带宽限制"),

    NOT_EXTENDED(510, "Not Extended", "获取资源所需的策略没有被满足"),

    NETWORK_AUTHENTICATION_REQUIRED(511, "Network Authentication Required", "需要进行网络授权");
    /**
     * 状态码
     */
    private final int code;
    /**
     * 中文含义
     */
    private final String reasonPhraseUS;
    /**
     * 英文含义
     */
    private final String reasonPhraseCN;
    /**
     * 某个数字代表的错误类型
     */
    private static final int
    INFORMATIONAL = 1,
    SUCCESSFUL = 2,
    REDIRECTION = 3,
    CLIENT_ERROR = 4,
    SERVER_ERROR = 5; 

    HttpStatusEnum(int code, String reasonPhraseUS, String reasonPhraseCN)
    {
        this.code = code;
        this.reasonPhraseUS = reasonPhraseUS;
        this.reasonPhraseCN = reasonPhraseCN;
    }
    public int code()
    {
        return code; 

    }
    public String reasonPhraseUS()
    {
        return reasonPhraseUS; 

    }
    public String reasonPhraseCN() { return reasonPhraseCN; }
    public static HttpStatusEnum valueOf(int code) {
        for (HttpStatusEnum httpStatus : values()) {
            if (httpStatus.code() == code) {
                return httpStatus;
                }
            } throw new IllegalArgumentException("No matching constant for [" + code + "]"); 

    } 

    public boolean is1xxInformational()
    {
        return type() == INFORMATIONAL; 

    }
    public boolean is2xxSuccessful()
    {
        return type() == SUCCESSFUL; 

    }
    public boolean is3xxRedirection()
    {
        return type() == REDIRECTION; 

    }
    public boolean is4xxClientError()
    {
        return type() == CLIENT_ERROR; 

    }
    public boolean is5xxServerError()
    {
        return type() == SERVER_ERROR; 

    }
    private int type()
    {
        return (int) code / 100; 

    } 

}