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java发送http请求

时间：2022-12-29 17:14:20浏览次数：43  
标签：java String http response 发送 return message public httpclient

java发送http请求有几种方法

1、HttpURLConnection、URLConnection

使用JDK原生提供的net，无需其他jar包；

2、HttpClient

3、Socket

本文使用依赖于第三方jar包的HttpClient

 

1、构建发送http所有方法主体

package com.suntek.app.common.utils.http;

import org.apache.commons.lang3.CharEncoding;
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpDelete;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.entity.StringEntity;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.InputStreamBody;
import org.apache.http.entity.mime.content.StringBody;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicHttpResponse;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.protocol.HTTP;
import org.apache.http.protocol.HttpContext;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.List;


/**
 * Comment
 * 
 */
public class HttpClienProxy {

    static final String BOUNDARY = "----------V2ymHFg03ehbqgZCaKO6jy";

    /**
     * 连接超时
     */
    private static final int HTTP_CONNECTION_TIMEOUT = 4000;
    /**
     * 请求超时
     */
    private static final int HTTP_REQUEST_TIMEOUT = 60000;

    private static final Logger LOG = LoggerFactory.getLogger(HttpClienProxy.class);

    /**
     * 初始化HttpClient
     * 
     * @return
     */
    public HttpClient initHttpClient() {
        HttpParams params = new BasicHttpParams();
        HttpConnectionParams.setConnectionTimeout(params, HTTP_CONNECTION_TIMEOUT);
        HttpConnectionParams.setSoTimeout(params, HTTP_REQUEST_TIMEOUT);
        return new DefaultHttpClient(params);
    }

    public JxHttpResponse sendRequest(HttpClient httpclient, HttpMessage message) throws IOException {
        return this.sendRequest(httpclient, message, true);
    }

    public JxHttpResponse sendRequest(HttpClient httpclient, HttpMessage message, HttpContext context)
            throws IOException {
        return this.sendRequest(httpclient, message, context, true);
    }

    public JxHttpResponse sendRequest(HttpClient httpclient, HttpMessage message, boolean closeHttp)
            throws IOException {
        if (HttpMessage.METHOD_GET.equalsIgnoreCase(message.getMethod())) {
            return httpGet(httpclient, message, closeHttp);
        } else if (HttpMessage.METHOD_POST.equalsIgnoreCase(message.getMethod())) {
            return httpPost(httpclient, message, closeHttp);
        } else if (HttpMessage.METHOD_PUT.equalsIgnoreCase(message.getMethod())) {
            return httpPut(httpclient, message, closeHttp);
        } else if (HttpMessage.METHOD_DELETE.equalsIgnoreCase(message.getMethod())) {
            return httpDelete(httpclient, message, closeHttp);
        }
        return null;
    }

    public JxHttpResponse sendRequest(HttpClient httpclient, HttpMessage message,
            HttpContext context, boolean closeHttp) throws IOException {
        if (HttpMessage.METHOD_GET.equalsIgnoreCase(message.getMethod())) {
            return httpGet(httpclient, message, context, closeHttp);
        } else if (HttpMessage.METHOD_POST.equalsIgnoreCase(message.getMethod())) {
            return httpPost(httpclient, message, context, closeHttp);
        } else if (HttpMessage.METHOD_PUT.equalsIgnoreCase(message.getMethod())) {
            return httpPut(httpclient, message, context, closeHttp);
        } else if (HttpMessage.METHOD_DELETE.equalsIgnoreCase(message.getMethod())) {
            return httpDelete(httpclient, message, closeHttp);
        }
        return null;
    }

    private JxHttpResponse httpGet(HttpClient httpclient, HttpMessage message, boolean closeHttp) {
        JxHttpResponse jxHttpResponse = null;
        try {
            HttpGet httpget = new HttpGet(message.getRequestUrl());
            // 初始HTTP请求头
            handleRequestHeader(httpget, message);
            HttpResponse response = httpclient.execute(httpget);
            if (response != null) {
                jxHttpResponse = new JxHttpResponse(
                        response.getStatusLine().getStatusCode(),
                        response.getStatusLine().getReasonPhrase(),
                        EntityUtils.toString(response.getEntity(), CharEncoding.UTF_8)
                );
            }
        } catch (Exception e) {
            LOG.error("发送get请求错误:{}", e);
        } finally {
            if (httpclient != null && closeHttp) {
                httpclient.getConnectionManager().shutdown();
            }
        }
        return jxHttpResponse;
    }

    private JxHttpResponse httpPost(HttpClient httpclient, HttpMessage message, boolean closeHttp)
            throws IOException {

        JxHttpResponse jxHttpResponse = null;

        try {
            HttpPost httppost = new HttpPost(message.getRequestUrl());

            // 初始HTTP请求头
            handleRequestHeader(httppost, message);

            HttpEntity entity = new StringEntity(message.getBody(), CharEncoding.UTF_8);
            httppost.setEntity(entity);

            HttpResponse response = httpclient.execute(httppost);
            if (response != null) {
                jxHttpResponse = new JxHttpResponse(
                        response.getStatusLine().getStatusCode(),
                        response.getStatusLine().getReasonPhrase(),
                        EntityUtils.toString(response.getEntity(), CharEncoding.UTF_8)
                );
            }
        } catch (Exception e) {
            LOG.error("发送post请求错误:{}", e);
        } finally {
            if (httpclient != null && closeHttp) {
                httpclient.getConnectionManager().shutdown();
            }
        }

        return jxHttpResponse;
    }

    private JxHttpResponse httpGet(HttpClient httpclient, HttpMessage message, HttpContext context,
            boolean closeHttp) {
        JxHttpResponse jxHttpResponse = null;
        try {

            HttpGet httpget = new HttpGet(message.getRequestUrl());
            // 初始HTTP请求头
            handleRequestHeader(httpget, message);
            HttpResponse response = httpclient.execute(httpget, context);
            if (response != null) {
                jxHttpResponse = new JxHttpResponse(
                        response.getStatusLine().getStatusCode(),
                        response.getStatusLine().getReasonPhrase(),
                        EntityUtils.toString(response.getEntity(), CharEncoding.UTF_8)
                );
            }
        } catch (Exception e) {
            LOG.error("发送get请求错误:{}", e);
        } finally {
            if (httpclient != null && closeHttp) {
                httpclient.getConnectionManager().shutdown();
            }
        }
        return jxHttpResponse;
    }

    private JxHttpResponse httpPost(HttpClient httpclient, HttpMessage message, HttpContext context,
            boolean closeHttp) throws IOException {

        JxHttpResponse jxHttpResponse = null;

        try {
            HttpPost httppost = new HttpPost(message.getRequestUrl());

            // 初始HTTP请求头
            handleRequestHeader(httppost, message);

            HttpEntity entity = new StringEntity(message.getBody(), CharEncoding.UTF_8);
            httppost.setEntity(entity);

            HttpResponse response = httpclient.execute(httppost, context);

            if (response != null) {
                jxHttpResponse = new JxHttpResponse(
                        response.getStatusLine().getStatusCode(),
                        response.getStatusLine().getReasonPhrase(),
                        EntityUtils.toString(response.getEntity(), CharEncoding.UTF_8)
                );
            }

        } catch (Exception e) {
            LOG.error("发送post请求错误:{}", e);
        } finally {
            if (httpclient != null && closeHttp) {
                httpclient.getConnectionManager().shutdown();
            }
        }
        return jxHttpResponse;
    }

    /**
     * 初始化Header
     * 
     * @param request
     * @param message
     */
    private void handleRequestHeader(HttpRequestBase request, HttpMessage message) {
        List<HttpHeader> list = message.getHeaders();
        for (HttpHeader header : list) {
            if (!request.containsHeader(header.getKey())) {
                request.addHeader(header.getKey(), header.getValue());
            }
        }

        String contentType = message.getContentType();
        String attachPath = message.getAttachPath();
        if (message.isFrom() && attachPath != null && !"".equals(attachPath)) {
            contentType += "; boundary=" + BOUNDARY;
        }

        // 设置ContentType
        if ((request instanceof HttpPut) || (request instanceof HttpPost)) {
            if (!contentType.isEmpty()){
                request.addHeader("Content-Type", contentType);
            }
        }
    }

    private JxHttpResponse httpPut(HttpClient httpclient, HttpMessage message, boolean closeHttp) {

        JxHttpResponse jxHttpResponse = null;

        try {

            HttpPut httpput = new HttpPut(message.getRequestUrl());
            // 初始HTTP请求头
            handleRequestHeader(httpput, message);
            HttpEntity entity = new StringEntity(message.getBody(), CharEncoding.UTF_8);
            httpput.setEntity(entity);

            HttpResponse response = httpclient.execute(httpput);

            if (response != null) {
                jxHttpResponse = new JxHttpResponse(
                        response.getStatusLine().getStatusCode(),
                        response.getStatusLine().getReasonPhrase(),
                        EntityUtils.toString(response.getEntity(),  CharEncoding.UTF_8)
                );
            }

        } catch (Exception e) {
            LOG.error("发送put请求错误:{}", e);
        } finally {
            if (httpclient != null && closeHttp) {
                httpclient.getConnectionManager().shutdown();
            }
        }

        return jxHttpResponse;
    }

    private JxHttpResponse httpPut(HttpClient httpclient, HttpMessage message, HttpContext context, boolean closeHttp) {

        JxHttpResponse jxHttpResponse = null;

        try {

            HttpPut httpput = new HttpPut(message.getRequestUrl());
            // 初始HTTP请求头
            handleRequestHeader(httpput, message);
            HttpEntity entity = new StringEntity(message.getBody(), CharEncoding.UTF_8);
            httpput.setEntity(entity);

            HttpResponse response = httpclient.execute(httpput, context);

            if (response != null) {
                jxHttpResponse = new JxHttpResponse(
                        response.getStatusLine().getStatusCode(),
                        response.getStatusLine().getReasonPhrase(),
                        EntityUtils.toString(response.getEntity(), CharEncoding.UTF_8)
                );
            }


        } catch (Exception e) {
            LOG.error("发送put请求错误:{}", e);
        } finally {
            if (httpclient != null && closeHttp) {
                httpclient.getConnectionManager().shutdown();
            }
        }

        return jxHttpResponse;
    }

    private JxHttpResponse httpDelete(HttpClient httpclient, HttpMessage message, boolean closeHttp) {

        JxHttpResponse jxHttpResponse = null;
        try {

            HttpDelete httpdelete = new HttpDelete(message.getRequestUrl());
            // 初始HTTP请求头
            handleRequestHeader(httpdelete, message);
            HttpResponse response = httpclient.execute(httpdelete);
            if (response != null) {
                jxHttpResponse = new JxHttpResponse(
                        response.getStatusLine().getStatusCode(),
                        response.getStatusLine().getReasonPhrase(),
                        EntityUtils.toString(response.getEntity(), CharEncoding.UTF_8)
                );
            }

        } catch (Exception e) {
            LOG.error("发送delete请求错误:{}", e);
        } finally {
            if (httpclient != null && closeHttp) {
                httpclient.getConnectionManager().shutdown();
            }
        }
        return jxHttpResponse;
    }

    public HttpResponse uploadFile(HttpClient httpclient, HttpMessage message, String filename,
            InputStream stream, HttpContext context, boolean closeHttp) throws IOException {
        HttpResponse response = null;
        try {
            HttpPost httppost = new HttpPost(message.getRequestUrl());

            // 初始HTTP请求头
            //handleRequestHeader(httppost, message);

            InputStreamBody body = new InputStreamBody(stream, filename);
            MultipartEntity entity = new MultipartEntity();
            entity.addPart("file", body);

            List<HttpBodyParam> params = message.getParams();
            if (params!=null && params.size()>0) {
                StringBody comment = null;
                for (HttpBodyParam httpBodyParam : params) {
                    if (httpBodyParam==null) {
                        continue;
                    }
                    comment = new StringBody(httpBodyParam.getValue());
                    entity.addPart(httpBodyParam.getName(), comment);//设置请求后台的普通参数   
                }
            }

            httppost.setEntity(entity);
            response = httpclient.execute(httppost, context);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (httpclient != null && closeHttp) {
                httpclient.getConnectionManager().shutdown();
            }
        }
        return response;
    }
    
   /**
   * 初始化client
   * 不添加请求超时参数
   * 添加请求超时参数导致httpclient读取返回数据异常
   * @return
   */
    public HttpClient initHttpClientWithoutSoTimeOut() {
        HttpParams params = new BasicHttpParams();
        HttpConnectionParams.setConnectionTimeout(params, HTTP_CONNECTION_TIMEOUT);
        return new DefaultHttpClient(params);
    }
}

2、构建http消息头

package com.suntek.app.common.utils.http;

/**
 * HTTP消息头
 * 
 */
public class HttpHeader {

    private String key = "";
    private String value = "";

    public HttpHeader() {

    }

    public HttpHeader(String key, String value) {
        super();
        this.key = key;
        this.value = value;
    }

    public String getKey() {
        return key;
    }

    public void setKey(String key) {
        this.key = key;
    }

    public String getValue() {
        return value;
    }

    public void setValue(String value) {
        this.value = value;
    }

}

3、构建http消息体

package com.suntek.app.common.utils.http;

import java.io.Serializable;

/**
 * HTTP消息体
 * 
 */
public class HttpBodyParam implements Serializable {

    private static final long serialVersionUID = 1L;
    private String name = "";
    private String value = "";

    public HttpBodyParam() {

    }

    public HttpBodyParam(String name, String value) {
        super();
        this.name = name;
        this.value = value;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getValue() {
        return value;
    }

    public void setValue(String value) {
        this.value = value;
    }

}

4、构建http消息（整体）

package com.suntek.app.common.utils.http;

import java.util.ArrayList;
import java.util.List;

/**
 * HTTP消息
 * 
 */
public class HttpMessage {


    public static final String METHOD_GET = "GET";
    public static final String METHOD_PUT = "PUT";
    public static final String METHOD_POST = "POST";
    public static final String METHOD_DELETE = "DELETE";

    public static final String HEADER_CONTENT_TYPE = "Content-Type";
    public static final String HEADER_HOST = "Host";
    public static final String HEADER_USER_AGENT = "user-Agent";

    public static final String AGENT_NAME = "Http-Client-Tool";
    public static final String CONTENT_TYPE_FORM = "form";

    public static final String CONTENT_TYPE_TEXT_UTF8 = "text/plain; charset=utf-8";
    public static final String CONTENT_TYPE_JSON = "application/json";

    private String requestUrl = "";
    private String method = "";
    private String body = "";
    private String contentType = "";
    private boolean isFrom = true;

    private String attachName = "";
    private String attachPath = "";

    private String protocol = "";
    public static final String HTTP = "http";
    public static final String HTTPS = "https";

    /**
     * 消息头集合
     */
    List<HttpHeader> headers = null;

    /**
     * 消息体集合
     */
    List<HttpBodyParam> params = null;

    public HttpMessage() {
        headers = new ArrayList<HttpHeader>();
        params = new ArrayList<HttpBodyParam>();
    }

    public void addHeader(String key, String value) {
        HttpHeader header = new HttpHeader(key, value);
        headers.add(header);
    }

    public void addBodyParam(String name, String value) {
        HttpBodyParam bodyParam = new HttpBodyParam(name, value);
        params.add(bodyParam);
    }

    /**
     * 获取URL地址
     * 
     * @return
     */
    public String getRequestUrl() {
        return requestUrl;
    }

    public void setRequestUrl(String requestUrl) {
        this.requestUrl = requestUrl;
    }

    public String getProtocolStr() {
        String headS = "://";
        this.protocol = requestUrl.substring(0, requestUrl.indexOf(headS));
        return protocol;
    }

    /**
     * 获取请求相对路径
     * 
     * @return
     */
    public String getRequestPath() {
        // http://localhost:8090/ap/service/index.jsp
        String headS = "://";
        String lastPart = requestUrl.substring(requestUrl.indexOf(headS) + headS.length());
        String path = lastPart.substring(lastPart.indexOf("/"));
        return path;
    }

    /**
     * 获取主机地址
     * 
     * @return
     */
    public String getHost() {
        String headS = "://";
        String lastPart = requestUrl.substring(requestUrl.indexOf(headS) + headS.length());
        String host = lastPart.substring(0, lastPart.indexOf("/"));
        if (host.indexOf(":") > 0) {
            return host.split(":")[0];
        }
        return host;
    }

    /**
     * 获取主机端口
     * 
     * @return
     */
    public int getPort() {
        String headS = "://";
        String lastPart = requestUrl.substring(requestUrl.indexOf(headS) + headS.length());
        String host = lastPart.substring(0, lastPart.indexOf("/"));
        if (host.indexOf(":") > 0) {
            return Integer.parseInt(host.split(":")[1]);
        }
        return 80;
    }

    public int getBodyLength() {
        return body.length();
    }

    public boolean isGzip() {
        for (HttpHeader header : headers) {
            if (header.getKey().equalsIgnoreCase("Content-Encoding")
                    && header.getValue().equalsIgnoreCase("gzip")) {
                return true;
            }
        }
        return false;
    }

    public void setHeaders(List<HttpHeader> headers) {
        this.headers = headers;
    }

    public List<HttpHeader> getHeaders() {
        return headers;
    }

    public List<HttpBodyParam> getParams() {
        return params;
    }

    public void setParams(List<HttpBodyParam> params) {
        this.params = params;
    }

    public String getMethod() {
        return method;
    }

    public void setMethod(String method) {
        this.method = method.toUpperCase();
    }

    public String getBody() {
        return body;
    }

    public void setBody(String body) {
        this.body = body;
    }

    public String getAttachPath() {
        return attachPath;
    }

    public void setAttachPath(String attachPath) {
        this.attachPath = attachPath;
    }

    public boolean isFrom() {
        return isFrom;
    }

    public void setFrom(boolean isFrom) {
        this.isFrom = isFrom;
    }

    public String getContentType() {
        return contentType;
    }

    public void setContentType(String contentType) {
        this.contentType = contentType;
    }

    public String getContentTypeReal() {
        String[] arr = contentType.split(";");
        return arr[0].trim();
    }

    public String getCharset() {
        String[] arr = contentType.split(";");
        return arr[1].trim().split("=")[1].trim();
    }

    public String getAttachName() {
        return attachName;
    }

    public void setAttachName(String attachName) {
        this.attachName = attachName;
    }

    public static void main(String[] args) {
        String test = "https://localhost:8090/ap/service/index.jsp";
        String headS = "://";
        System.out.println(test.substring(0, test.indexOf(headS)));
    }
}

5、构建消息响应实体

package com.suntek.app.common.utils.http;

/**
 * @author wb
 * @version 1.0
 * @date 2022/12/29 16:13
 */
public class JxHttpResponse {

    private Integer statusCode;
    private String reasonPhrase;
    private String content;


    public JxHttpResponse(Integer statusCode, String reasonPhrase, String content) {
        this.statusCode = statusCode;
        this.reasonPhrase = reasonPhrase;
        this.content = content;
    }

    public Integer getStatusCode() {
        return statusCode;
    }

    public void setStatusCode(Integer statusCode) {
        this.statusCode = statusCode;
    }

    public String getReasonPhrase() {
        return reasonPhrase;
    }

    public void setReasonPhrase(String reasonPhrase) {
        this.reasonPhrase = reasonPhrase;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }
}

7、调用发送http请求方法

//发送http请求
private void sendTo(String uri, String body) {

        LOG.info("反向开户报文[BbossService.sendTo] the uri : {}, the body : {}", uri, body);

        HttpMessage httpMessage = buildHttpMessage(uri, body);
        JxHttpResponse httpResponse;
        NotifyReverseUserResponse notifyReverseUserResponse;
        try {
            HttpClienProxy proxy = new HttpClienProxy();
            HttpClient client = proxy.initHttpClient();
            httpResponse = proxy.sendRequest(client, httpMessage);

            if (httpResponse != null) {
                String data = httpResponse.getContent();
                notifyReverseUserResponse = JSONObject.parseObject(data, NotifyReverseUserResponse.class);
                Integer code = httpResponse.getStatusCode();
                if (LOG.isDebugEnabled()) {
                    LOG.debug("the response code : {}, \r\n the response content : {}",
                            code, notifyReverseUserResponse);
                }
            } else {

            }
        } catch (Exception e) {
            LOG.error("occur Exception:{}", e.getMessage(), e);
        }
    }

//http消息传值
private HttpMessage buildHttpMessage(String uri, String body) {

    List<HttpHeader> headers = new LinkedList<>();
    HttpHeader httpHeader = new HttpHeader();
    headers.add(httpHeader);

    HttpMessage httpMessage = new HttpMessage();
    httpMessage.setRequestUrl(uri);
    httpMessage.setMethod(HttpMessage.METHOD_POST);
    httpMessage.setContentType(HttpMessage.CONTENT_TYPE_JSON);
    httpMessage.setBody(body);
    httpMessage.setHeaders(headers);

    return httpMessage;
}
 

8、接收消息的json实体类

package com.suntek.app.common.entity.reverse.response;

import java.io.Serializable;

/**
 * @author wb
 * @version 1.0
 * @date 2022/12/29 19:58
 */
public class NotifyReverseUserResponse implements Serializable {

    private Integer code;

    private String msg;

    private Long timestamp;

    public Integer getCode() {
        return code;
    }

    public void setCode(Integer code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public Long getTimestamp() {
        return timestamp;
    }

    public void setTimestamp(Long timestamp) {
        this.timestamp = timestamp;
    }

    @Override
    public String toString() {
        return "NotifyReverseUserResponse{" +
                "code=" + code +
                ", msg='" + msg + '\'' +
                ", timestamp=" + timestamp +
                '}';
    }
}

 

标签：java,String,http,response,发送,return,message,public,httpclient
From： https://www.cnblogs.com/wanbiao/p/16598872.html

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