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如何用spring-boot集成httpClient實現(xiàn)遠程調(diào)用

 如何用spring-boot集成httpClient實現(xiàn)遠程調(diào)用?這篇文章運用了實例代碼展示,代碼非常詳細,可供感興趣的小伙伴們參考借鑒,希望對大家有所幫助。

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引入相關依賴:

org.apache.httpcomponents

httpclient

4.5.9

com.alibaba

fastjson

1.2.47

org.springframework.boot

spring-boot-configuration-processor

true

創(chuàng)建HttpClientUtil工具類,代碼如下:

package com.test.demo;

import com.alibaba.fastjson.JSON;

import com.test.demo.model.User;

import org.apache.http.HttpEntity;

import org.apache.http.NameValuePair;

import org.apache.http.ParseException;

import org.apache.http.client.ClientProtocolException;

import org.apache.http.client.config.RequestConfig;

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.utils.URIBuilder;

import org.apache.http.entity.StringEntity;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.impl.client.HttpClientBuilder;

import org.apache.http.util.EntityUtils;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Component;

import java.io.IOException;

import java.net.URI;

import java.net.URISyntaxException;

import java.util.List;

/**

* ClassName: HttpClientTest

* Package: com.test.demo

* Description: httpClient方法封裝

* Datetime: 2020/1/13 10:45

* Author: zhoukaishun

*/

@Component

public class HttpClientUtil {

@Autowired

private HttpClientConfigure httpClientConfigure;

/**

* @description GET封裝

* @author zhoukaishun

* @date 2020/1/13 13:12

*/

public void doGetHttp(List params,Boolean haveParams) {

// 獲得Http客戶端

CloseableHttpClient httpClient = HttpClientBuilder.create().build();

// 參數(shù)

URI uri = null;

try {

// 設置uri信息,并將參數(shù)集合放入uri;

if(haveParams){//有參調(diào)用

uri = new URIBuilder().setScheme(httpClientConfigure.getScheme()).setHost(httpClientConfigure.getHost())

.setPort(httpClientConfigure.getPort()).setPath(httpClientConfigure.getMapPath().get("interface2"))

.setParameters(params).build();

}else{//無參調(diào)用

uri = new URIBuilder().setScheme(httpClientConfigure.getScheme()).setHost(httpClientConfigure.getHost())

.setPort(httpClientConfigure.getPort()).setPath(httpClientConfigure.getMapPath().get("interface1"))

.build();

}

} catch (URISyntaxException e1) {

e1.printStackTrace();

}

// 創(chuàng)建Get請求

HttpGet httpGet = new HttpGet(uri);

// 響應模型

CloseableHttpResponse response = null;

try {

// 配置信息

RequestConfig requestConfig = RequestConfig.custom()

// 設置連接超時時間(單位毫秒)

.setConnectTimeout(5000)

// 設置請求超時時間(單位毫秒)

.setConnectionRequestTimeout(5000)

// socket讀寫超時時間(單位毫秒)

.setSocketTimeout(5000)

// 設置是否允許重定向(默認為true)

.setRedirectsEnabled(true).build();

// 將上面的配置信息 運用到這個Get請求里

httpGet.setConfig(requestConfig);

// 由客戶端執(zhí)行(發(fā)送)Get請求

response = httpClient.execute(httpGet);

// 從響應模型中獲取響應實體

HttpEntity responseEntity = response.getEntity();

System.out.println("響應狀態(tài)為:" + response.getStatusLine());

if (responseEntity != null) {

System.out.println("響應內(nèi)容長度為:" + responseEntity.getContentLength());

System.out.println("響應內(nèi)容為:" + EntityUtils.toString(responseEntity));

}

} catch (ClientProtocolException e) {

e.printStackTrace();

} catch (ParseException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

} finally {

try {

// 釋放資源

if (httpClient != null) {

httpClient.close();

}

if (response != null) {

response.close();

}

} catch (IOException e) {

e.printStackTrace();

}

}

}

/**

* @description POST封裝

* @author zhoukaishun

* @date 2020/1/13 14:01

*/

public void doPostHttp(User user,Boolean haveParam) {

// 獲得Http客戶端

CloseableHttpClient httpClient = HttpClientBuilder.create().build();

URI uri = null;

try {

// 設置uri信息,并將參數(shù)集合放入uri;

uri = new URIBuilder().setScheme(httpClientConfigure.getScheme()).setHost(httpClientConfigure.getHost())

.setPort(httpClientConfigure.getPort())

.setPath(haveParam?httpClientConfigure.getMapPath().get("interface4"):httpClientConfigure.getMapPath().get("interface3"))

.build();

} catch (URISyntaxException e1) {

e1.printStackTrace();

}

// 創(chuàng)建Post請求

HttpPost httpPost = new HttpPost(uri);

if(haveParam){

//入?yún)?/p>

// 利用阿里的fastjson,將Object轉(zhuǎn)換為json字符串;

// (需要導入com.alibaba.fastjson.JSON包)

String jsonString = JSON.toJSONString(user);

StringEntity entity = new StringEntity(jsonString, "UTF-8");

// post請求是將參數(shù)放在請求體里面?zhèn)鬟^去的;這里將entity放入post請求體中

httpPost.setEntity(entity);

httpPost.setHeader("Content-Type", "application/json;charset=utf8");

}

// 響應模型

CloseableHttpResponse response = null;

try {

// 由客戶端執(zhí)行(發(fā)送)Post請求

response = httpClient.execute(httpPost);

// 從響應模型中獲取響應實體

HttpEntity responseEntity = response.getEntity();

System.out.println("響應狀態(tài)為:" + response.getStatusLine());

if (responseEntity != null) {

System.out.println("響應內(nèi)容長度為:" + responseEntity.getContentLength());

System.out.println("響應內(nèi)容為:" + EntityUtils.toString(responseEntity));

}鄭州婦科醫(yī)院哪家好 https://yiyuan.120ask.com/zzfck/

} catch (ClientProtocolException e) {

e.printStackTrace();

} catch (ParseException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

} finally {

try {

// 釋放資源

if (httpClient != null) {

httpClient.close();

}

if (response != null) {

response.close();

}

} catch (IOException e) {

e.printStackTrace();

}

}

}

}

其中大部分代碼基本不變,只有對url的拼接做了一些處理,可以看到我們注入了一個HttpClientConfigure實例,因為我們需要訪問的路徑情況有很多種,但是我們不可能每次都去改util下的url拼接代碼,所以引入一個HttpClientConfigure,這是我自定義的一個類,用于存儲我們拼接url可能遇到的情況。代碼如下:

package com.test.demo;

import lombok.Data;

import org.springframework.boot.context.properties.ConfigurationProperties;

import org.springframework.stereotype.Component;

import java.util.HashMap;

import java.util.Map;

/**

* ClassName: HttpClientConfigure

* Package: com.test.demo

* Description: 接收配置信息

* Datetime: 2020/1/13 14:41

* Author: zhoukaishun

*/

@Component

@ConfigurationProperties(prefix="httpclientconfigure")

@Data

public class HttpClientConfigure {

private Map mapPath = new HashMap<>();

private String scheme;

private String host;

private Integer port;

}

其中的@ConfigurationProperties注解 前面提到過,在pom中,其中屬性值配置在yml文件中,如下(具體內(nèi)容根據(jù)自己的需求來定):

到這里就可以開始測試了,可以在本地啟動兩個服務(一個服務也行),根據(jù)自己controller里面的訪問路徑配置httpclientconfigure,然后直接調(diào)用自己controller里方法即可。

以我的demo為例,調(diào)用者controller代碼如下:

@GetMapping

@RequestMapping("/doGetHaveNoParam")

public void doGetHaveNoParam(){

httpClientUtil.doGetHttp(null,false);

}

@GetMapping

@RequestMapping("/doGetHaveParam")

public void doGetHaveParam(){

System.out.println("調(diào)用有參Get請求,當前時間:"+System.currentTimeMillis());

List params = new ArrayList<>();

params.add(new BasicNameValuePair("name", "&"));

params.add(new BasicNameValuePair("age", "22"));

httpClientUtil.doGetHttp(params,true);

}

@PostMapping

@RequestMapping("/doPostHaveNoParam")

public void doPostHaveNoParam(){

httpClientUtil.doPostHttp(null,false);

}

@PostMapping

@RequestMapping("/doPostHaveParam")

public void doPostHaveParam(){

httpClientUtil.doPostHttp(new User("name",11),true);

}

被調(diào)用者controller代碼如下:

@RequestMapping("/doGetHaveNoParam")

public String doGetHaveNoParam(){

return "doGetHaveNoParam successful";

}

@RequestMapping("/doGetHaveParam")

public List doGetHaveParam(String name,Integer age){

return getUserByAge(name,age);

}

@PostMapping

@RequestMapping("/doPostHaveNoParam")

public String doPostHaveNoParam(){

return "doPostHaveNoParam successful";

}

@PostMapping

@RequestMapping("/doPostHaveParam")

public String doHttpPostParam(@RequestBody User user){

return "do Post params:name="+user.getName()+",age="+user.getAge();

使用postman測試如下:

請求路徑分別為:

http://localhost:8081/user/doGetHaveNoParam

http://localhost:8081/user/doGetHaveParam

http://localhost:8081/user/doPostHaveNoParam

http://localhost:8081/user/doPostHaveParam

以上就是用spring-boot集成httpClient實現(xiàn)遠程調(diào)用的方法,代碼詳細清楚,如果在日常工作遇到這個問題,希望你能通過這篇文章解決問題。如果想了解更多相關內(nèi)容,歡迎關注創(chuàng)新互聯(lián)行業(yè)資訊頻道!

當前文章:如何用spring-boot集成httpClient實現(xiàn)遠程調(diào)用
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