Java HttpClient两种数据传输方式

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一、HttpClient两种Post数据传输方式

package com.httpclient.util;import org.apache.http.HttpEntity;import org.apache.http.ParseException;import org.apache.http.client.ClientProtocolException;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.entity.ByteArrayEntity;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;import org.junit.Test;import java.io.IOException;import java.io.UnsupportedEncodingException;import java.util.ArrayList;import java.util.List;public class HttpClientUtil{    @Test    public void jUnitTestPost() {        postParam();    }    @Test    public void jUnitTestGet() {        get();    }    /**     * 第一种：post字节流     * @param lineTxt     * @throws IOException     */    public static void postByte(String lineTxt) throws IOException {        // 创建默认的httpClient实例.        CloseableHttpClient httpClient = HttpClients.createDefault();        // 创建httpPost        HttpPost httpPost = new HttpPost("http://127.0.0.1:8080/data/store?cacheName=cache02");        try {            httpPost.setEntity(new ByteArrayEntity(lineTxt.getBytes("utf8")));//使用字节流传输            httpPost.setHeader("Content-type", "text/xml;charset=utf8");//内容类型            httpPost.setHeader("Connection", "Close");//服务端发送完数据，即关闭连接            //HTTP 1.0规定浏览器与服务器只保持短暂的连接，浏览器的每次请求都需要与服务器建立一个TCP连接，服务器完成请求处理后立即断开TCP连接，服务器不跟踪每个客户也不记录过去的请求            CloseableHttpResponse response = httpClient.execute(httpPost);            try {                HttpEntity entity = response.getEntity();                if (entity != null) {                    String rs=EntityUtils.toString(entity, "UTF-8");                    System.out.println(rs);                }            } finally {                response.close();                return;            }        } catch (ClientProtocolException e) {            e.printStackTrace();        } catch (UnsupportedEncodingException e1) {            e1.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        } finally {            // 关闭连接,释放资源            try {                httpClient.close();                return;            } catch (IOException e) {                e.printStackTrace();            }        }    }    /**     * 第二种：post参数列表     */    public void postParam() {        // 创建默认的httpClient实例.        CloseableHttpClient httpclient = HttpClients.createDefault();        // 创建httppost        HttpPost httppost = new HttpPost("https://c.api.weibo.com/2/comments/create/biz.json");        // 创建参数队列        List<BasicNameValuePair> formParams = new ArrayList<BasicNameValuePair>();        formParams.add(new BasicNameValuePair("access_token", "2.00SdyOsBnp71ED50b943f4670l75U8"));        formParams.add(new BasicNameValuePair("id", "4087614108017463"));        formParams.add(new BasicNameValuePair("comment", "text"));        UrlEncodedFormEntity uefEntity;        try {            uefEntity = new UrlEncodedFormEntity(formParams, "UTF-8");            httppost.setEntity(uefEntity);            System.out.println("executing request " + httppost.getURI());            CloseableHttpResponse response = httpclient.execute(httppost);            try {                HttpEntity entity = response.getEntity();                if (entity != null) {                    System.out.println("--------------------------------------");                    System.out.println("Response content: " + EntityUtils.toString(entity, "UTF-8"));                    System.out.println("--------------------------------------");                }            } finally {                response.close();            }        } catch (ClientProtocolException e) {            e.printStackTrace();        } catch (UnsupportedEncodingException e1) {            e1.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        } finally {            // 关闭连接,释放资源            try {                httpclient.close();            } catch (IOException e) {                e.printStackTrace();            }        }    }    /**     * 发送 get请求     */    public void get() {        CloseableHttpClient httpclient = HttpClients.createDefault();        try {            // 创建httpget.            HttpGet httpget = new HttpGet("http://www.baidu.com/");            System.out.println("executing request " + httpget.getURI());            // 执行get请求.            CloseableHttpResponse response = httpclient.execute(httpget);            try {                // 获取响应实体                HttpEntity entity = response.getEntity();                System.out.println("--------------------------------------");                // 打印响应状态                System.out.println(response.getStatusLine());                if (entity != null) {                    // 打印响应内容长度                    System.out.println("Response content length: " + entity.getContentLength());                    // 打印响应内容                    System.out.println("Response content: " + EntityUtils.toString(entity));                }                System.out.println("------------------------------------");            } finally {                response.close();            }        } catch (ClientProtocolException e) {            e.printStackTrace();        } catch (ParseException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        } finally {            // 关闭连接,释放资源            try {                httpclient.close();            } catch (IOException e) {                e.printStackTrace();            }        }    }}

二、server端的数据接收方式，使用@RequestBody接收二进制字节流，使用@RequestParam接收参数列表

   @ResponseBody   @RequestMapping(produces = "text/xml;charset=utf8", value = "/store", method = {RequestMethod.POST})    public String commitData(@RequestParam("cacheName") String cacheName, @RequestBody String requestData) {        JSONObject responseData = new JSONObject();        try {            JSONArray requestDatas = JSONArray.parseArray(requestData);            logger.info("接受到数据:[" + requestData.length() + "]. AllData: " + requestData);            JSONArray rs=dataStoreService.storeData(requestDatas,cacheName,configManager);            responseData.put("rs", rs);            responseData.put("success", true);        } catch (Exception e) {            logger.error("store documents exception:[" + e.getMessage() + "].", e);            responseData.put("success", false);            responseData.put("errorMsg", "store documents exception:[" + e.getMessage() + "].");        } finally {            return responseData.toJSONString();        }    }

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