httpclient ?get ?post

post请求方法和get请求方法 package com.xkeshi.paymentweb.controllers.test;import com.alibaba.fastjson.JSONObject;import org.apache.http.HttpEntity;import org.apache.http.NameValuePair;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.ContentType;import org.apache.http.entity.StringEntity;import org.apache.http.entity.mime.HttpMultipartMode;import org.apache.http.entity.mime.MultipartEntityBuilder;import org.apache.http.entity.mime.content.FileBody;import org.apache.http.entity.mime.content.StringBody;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 java.io.File;import java.io.IOException;import java.util.ArrayList;import java.util.List;/** * Created by jiangzw on 2017/11/3. */public class MyTestHttpClient { ???/** ????* post方式提交表单（模拟用户登录请求） ????*/ ???public static void doFormPost() { ???????// 创建默认的httpClient实例. ???????CloseableHttpClient httpclient = HttpClients.createDefault(); ???????// 创建httppost ???????String url = "http://localhost:8888/myTest/testHttpClientPost"; ???????HttpPost httppost = new HttpPost(url); ???????// 创建参数队列 ???????List<NameValuePair> formparams = new ArrayList<NameValuePair>(); ???????formparams.add(new BasicNameValuePair("username", "admin")); ???????formparams.add(new BasicNameValuePair("password", "123456")); ???????UrlEncodedFormEntity entity = null; ???????try { ???????????entity = new UrlEncodedFormEntity(formparams, "UTF-8"); ???????????httppost.setEntity(entity); ???????????System.out.println("executing request " + httppost.getURI()); ???????????CloseableHttpResponse response = httpclient.execute(httppost); ???????????try { ???????????????HttpEntity resEntity = response.getEntity(); ???????????????if (resEntity != null) { ???????????????????System.out.println("Response content: " + EntityUtils.toString(resEntity, "UTF-8")); ???????????????} ???????????} finally { ???????????????response.close(); ???????????} ???????} catch (Exception 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 static void doGet() { ???????CloseableHttpClient httpclient = HttpClients.createDefault(); ???????// 创建参数队列 ???????List<NameValuePair> params = new ArrayList<NameValuePair>(); ???????params.add(new BasicNameValuePair("username", "admin")); ???????params.add(new BasicNameValuePair("password", "123456")); ???????try { ???????????//参数转换为字符串 ???????????String paramsStr = EntityUtils.toString(new UrlEncodedFormEntity(params, "UTF-8")); ???????????String url = "http://localhost:8888/myTest/testHttpClientGet" + "?" + paramsStr; ???????????// 创建httpget. ???????????HttpGet httpget = new HttpGet(url); ???????????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(); ???????????????// 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)); ???????????????} ???????????} finally { ???????????????response.close(); ???????????} ???????} catch (Exception e) { ???????????e.printStackTrace(); ???????} finally { ???????????// 关闭连接,释放资源 ???????????try { ???????????????httpclient.close(); ???????????} catch (IOException e) { ???????????????e.printStackTrace(); ???????????} ???????} ???} ???/** ????* post方式提交表单（模拟用户登录请求） ????*/ ???public static void doStringPost() { ???????// 创建默认的httpClient实例. ???????CloseableHttpClient httpclient = HttpClients.createDefault(); ???????// 创建httppost ???????String url = "http://localhost:8888/myTest/testHttpClientStringPost"; ???????HttpPost httppost = new HttpPost(url); ???????// 创建参数字符串 ???????JSONObject jsonObject = new JSONObject(); ???????jsonObject.put("username", "admin"); ???????jsonObject.put("password", "123456"); ???????try { ???????????//设置实体内容的格式。APPLICATION_JSON = "application/json"， ???????????// 如果传送"application/xml"格式，选择ContentType.APPLICATION_XML ???????????StringEntity entity = new StringEntity(jsonObject.toString(), ContentType.APPLICATION_JSON); ???????????httppost.setEntity(entity); //发送字符串参数 ???????????System.out.println("executing request " + httppost.getURI()); ???????????CloseableHttpResponse response = httpclient.execute(httppost); ???????????try { ???????????????HttpEntity resEntity = response.getEntity(); ???????????????if (resEntity != null) { ???????????????????System.out.println("Response content: " + EntityUtils.toString(resEntity, "UTF-8")); ???????????????} ???????????} finally { ???????????????response.close(); ???????????} ???????} catch (Exception e) { ???????????e.printStackTrace(); ???????} finally { ???????????// 关闭连接,释放资源 ???????????try { ???????????????httpclient.close(); ???????????} catch (IOException e) { ???????????????e.printStackTrace(); ???????????} ???????} ???} ???/** ????* 上传文件 ????*/ ???public static void doUploadPost() { ???????CloseableHttpClient httpclient = HttpClients.createDefault(); ???????String url = "http://localhost:8888/myTest/testHttpClientUploadPost"; ???????try { ???????????HttpPost httppost = new HttpPost(url); ???????????FileBody fileBody = new FileBody(new File("D:\\img8.jpg")); ???????????StringBody stringBody = new StringBody("一张测试图片", ContentType.TEXT_PLAIN.withCharset("UTF-8")); ???????????MultipartEntityBuilder builder = MultipartEntityBuilder.create(); ???????????builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE); ???????????builder.addPart("file", fileBody);//文件参数 ???????????builder.addPart("explain", stringBody);//字符串参数 ???????????HttpEntity entity = builder.build(); ???????????httppost.setEntity(entity); ???????????System.out.println("executing request " + httppost.getRequestLine()); ???????????CloseableHttpResponse response = httpclient.execute(httppost); ???????????try { ???????????????System.out.println(response.getStatusLine()); ???????????????HttpEntity resEntity = response.getEntity(); ???????????????if (resEntity != null) { ???????????????????System.out.println("Response content: " + EntityUtils.toString(resEntity, "UTF-8")); ???????????????} ???????????} finally { ???????????????response.close(); ???????????} ???????} catch (Exception e) { ???????????e.printStackTrace(); ???????} finally { ???????????try { ???????????????httpclient.close(); ???????????} catch (IOException e) { ???????????????e.printStackTrace(); ???????????} ???????} ???} ???public static void main(String[] args) {// ???????doFormPost();// ???????doGet();// ???????doStringPost(); ???????doUploadPost(); ???}}处理请求的方法package com.xkeshi.paymentweb.controllers.test;import com.alibaba.fastjson.JSON;import com.alibaba.fastjson.JSONObject;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.*;import org.springframework.web.multipart.commons.CommonsMultipartFile;import java.io.File;/** * Created by jiangzw on 2017/11/3. */@Controller@RequestMapping(value = "/myTest")public class MyTestController { ???@ResponseBody ???@RequestMapping(value = "/testHttpClientPost", method = RequestMethod.POST) ???public String testHttpClientPost(@RequestParam("username") String username, ????????????????????????????????????@RequestParam("password") String password) { ???????String result = null; ???????if ("admin".equals(username) && "123456".equals(password)) { ???????????result = "用户名和密码验证成功！"; ???????} else { ???????????result = "用户名和密码验证失败！"; ???????} ???????return result; ???} ???@ResponseBody ???@RequestMapping(value = "/testHttpClientGet", method = RequestMethod.GET) ???public String testHttpClientGet(@RequestParam("username") String username, ???????????????????????????????????@RequestParam("password") String password) { ???????String result = null; ???????if ("admin".equals(username) && "123456".equals(password)) { ???????????result = "用户名和密码验证成功！"; ???????} else { ???????????result = "用户名和密码验证失败！"; ???????} ???????return result; ???} ???@ResponseBody ???@RequestMapping(value = "/testHttpClientStringPost", method = RequestMethod.POST) ???public String testHttpClientStringPost(@RequestBody String requestBody) { ???????JSONObject jsonObject = JSON.parseObject(requestBody); ???????String username = jsonObject.get("username").toString(); ???????String password = jsonObject.get("password").toString(); ???????String result = null; ???????if ("admin".equals(username) && "123456".equals(password)) { ???????????result = "用户名和密码验证成功！"; ???????} else { ???????????result = "用户名和密码验证失败！"; ???????} ???????return result; ???} ???@ResponseBody ???@RequestMapping(value = "/testHttpClientUploadPost", method = RequestMethod.POST) ???public String testHttpClientUploadPost(@RequestParam("file") CommonsMultipartFile file, ??????????????????????????????????????????@RequestParam("explain") String explain) { ???????System.out.println("explain: " + explain); ???????String result = "上传失败"; ???????//文件保存路径和名称 ???????String savePath = "D:\\home" + File.separator + System.currentTimeMillis() + file.getOriginalFilename(); ???????File newFile= null; ???????try { ???????????newFile = new File(savePath); ???????????//通过CommonsMultipartFile的方法直接写文件（注意这个时候） ???????????file.transferTo(newFile); ???????????result = "上传成功"; ???????} catch (Exception e) { ???????????e.printStackTrace(); ???????} ???????return result; ???}}