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Apache中怎么實(shí)現(xiàn)一個(gè)httpclient封裝類(lèi),很多新手對(duì)此不是很清楚,為了幫助大家解決這個(gè)難題,下面小編將為大家詳細(xì)講解,有這方面需求的人可以來(lái)學(xué)習(xí)下,希望你能有所收獲。
基于apache httpcomponents組件,首先依賴(lài)jar包
<dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>4.5.13</version> </dependency> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpmime</artifactId> <version>4.5.13</version> </dependency>
先來(lái)看使用方法:
/** * @author tanghc */ public class HttpTest { /** * 普通get請(qǐng)求 * @throws IOException */ @Test public void get() throws IOException { String s = HttpHelper.get("http://localhost:8089/http/get") // 添加請(qǐng)求參數(shù) .parameter("id", "1") .parameter("name", "jim") .execute() .asString(); System.out.println(s); } /** * post提交表單 * @throws IOException */ @Test public void postForm() throws IOException { Map<String, Object> form = new HashMap<>(); form.put("id", 1); form.put("name", "tom"); String s = HttpHelper.postForm("http://localhost:8089/http/postForm", form) .execute() .asString(); System.out.println(s); } /** * post提交表單,并上傳文件。multipart * @throws IOException */ @Test public void postFormFile() throws IOException { Map<String, Object> form = new HashMap<>(); HttpHelper.UploadFile file = new HttpHelper.UploadFile("file", "a.txt", "hello world".getBytes()); form.put("id", 1); form.put("name", "tom"); String s = HttpHelper.postForm("http://localhost:8089/http/postFormFile", form, file) .execute() .asString(); System.out.println(s); } /** * post提交json * @throws IOException */ @Test public void postJson() throws IOException { Map<String, Object> form = new HashMap<>(); form.put("id", 1); form.put("name", "tom"); String json = JSON.toJSONString(form); String s = HttpHelper.postJson("http://localhost:8089/http/postJson", json) .execute() .asString(); System.out.println(s); } /** * 設(shè)置header * @throws IOException */ @Test public void setHeader() throws IOException { String s = HttpHelper.get("http://localhost:8089/http/header") // 設(shè)置單個(gè)header .header("token", "xxx") .execute() .asString(); System.out.println(s); Map<String, String> headers = new HashMap<>(); headers.put("token", "bbbb"); String s2 = HttpHelper.get("http://localhost:8089/http/header") // 設(shè)置全部header .headers(headers) .execute() .asString(); System.out.println(s2); } /** * 返回流 * @throws IOException */ @Test public void getStream() throws IOException { InputStream inputStream = HttpHelper.get("http://localhost:8089/http/stream") .execute() .asStream(); String s = IOUtils.toString(inputStream); System.out.println(s); } /** * 獲取http狀態(tài) * @throws IOException */ @Test public void getStatus() throws IOException { HttpHelper.ResponseResult responseResult = HttpHelper.get("http://localhost:8089/http/get") .parameter("id", "1") .parameter("name", "jim") .execute(); int status = responseResult.getStatus(); if (status == HttpStatus.SC_OK) { System.out.println(responseResult.asString()); } } /** * 獲取響應(yīng)頭 * @throws IOException */ @Test public void getHeaders() throws IOException { Map<String, Object> form = new HashMap<>(); form.put("id", 1); form.put("name", "tom"); String json = JSON.toJSONString(form); HttpHelper.ResponseResult responseResult = HttpHelper.postJson("http://localhost:8089/http/responseHeader", json) .execute(); Map<String, String> headers = responseResult.getHeaders(); System.out.println(headers.get("code")); System.out.println(headers.get("token")); System.out.println(responseResult.asString()); } /** * 獲取HttpResponse對(duì)象 * @throws IOException */ @Test public void getResponse() throws IOException { HttpHelper.ResponseResult responseResult = HttpHelper.get("http://localhost:8089/http/get") .parameter("id", "1") .parameter("name", "jim") .execute(); HttpResponse response = responseResult.getResponse(); Locale locale = response.getLocale(); System.out.println(locale); } /** * 自定義 * @throws IOException */ @Test public void custom() throws IOException { String s = HttpHelper.create() .url("http://localhost:8089/http/get") .method("get") .parameter("id", "1") .parameter("name", "jim") .header("token", "xx") .execute() .asString(); System.out.println(s); String json = "{ \"name\": \"Jim\" }"; String s2 = HttpHelper.create() .url("http://localhost:8089/http/postJson") .method("POST") .header("token", "xx") .entity(new StringEntity(json, ContentType.APPLICATION_JSON)) .execute() .asString(); System.out.println(s2); } }
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