SpringBoot 集成 Okhttp3

导入okhttp3的依赖

<dependency>
    <groupId>io.freefair.okhttp-spring-boot</groupId>
    <artifactId>okhttp3-spring-boot-starter</artifactId>
    <version>2.4.0-rc1</version>
</dependency>

创建OkHttpConfiguration配置类

package com.ysh.config;

import okhttp3.ConnectionPool;
import okhttp3.OkHttpClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.concurrent.TimeUnit;

@Configuration
public class OkHttpConfiguration {
    @Bean
    public X509TrustManager x509TrustManager(){
        return new X509TrustManager() {
            @Override
            public void checkClientTrusted(X509Certificate[] x509Certificates, String s) throws CertificateException {
            }
            @Override
            public void checkServerTrusted(X509Certificate[] x509Certificates, String s) throws CertificateException {
            }
            @Override
            public X509Certificate[] getAcceptedIssuers() {
                return new X509Certificate[0];
            }
        };

    }
    @Bean
    public SSLSocketFactory sslSocketFactory() {
        try {
            //信任任何链接
            SSLContext sslContext = SSLContext.getInstance("TLS");
            sslContext.init(null, new TrustManager[]{x509TrustManager()}, new SecureRandom());
            return sslContext.getSocketFactory();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (KeyManagementException e) {
            e.printStackTrace();
        }
        return null;
    }
    /**
     * Create a new connection pool with tuning parameters appropriate for a single-user application.
     * The tuning parameters in this pool are subject to change in future OkHttp releases. Currently
     */
    @Bean
    public ConnectionPool pool() {
        return new ConnectionPool(200, 5, TimeUnit.MINUTES);
    }
    @Bean
    public OkHttpClient okHttpClient() {
        return new OkHttpClient.Builder()
                .sslSocketFactory(sslSocketFactory(), x509TrustManager())
                .retryOnConnectionFailure(false)//是否开启缓存
                .connectionPool(pool())//连接池
                .connectTimeout(10L, TimeUnit.SECONDS)
                .readTimeout(10L, TimeUnit.SECONDS)
                .build();
    }
}

创建OkHttpUtil工具类

package com.ysh.utils;

import okhttp3.*;
import org.apache.commons.lang3.exception.ExceptionUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;
import java.io.File;
import java.util.Iterator;
import java.util.Map;

@Component
public class OkHttpUtil {
    private static final Logger logger = LoggerFactory.getLogger(OkHttpUtil.class);
    @Resource
    private OkHttpClient okHttpClient;
    /**
     * get
     *
     * @param url     请求的url
     * @param queries 请求的参数，在浏览器？后面的数据，没有可以传null
     * @return
     */
    public String get(String url, Map<String, String> queries) {
        String responseBody = "";
        StringBuffer sb = new StringBuffer(url);
        if (queries != null && queries.keySet().size() > 0) {
            boolean firstFlag = true;
            Iterator iterator = queries.entrySet().iterator();
            while (iterator.hasNext()) {
                Map.Entry entry = (Map.Entry<String, String>) iterator.next();
                if (firstFlag) {
                    sb.append("?" + entry.getKey() + "=" + entry.getValue());
                    firstFlag = false;
                } else {
                    sb.append("&" + entry.getKey() + "=" + entry.getValue());
                }
            }
        }
        Request request = new Request
                .Builder()
                .url(sb.toString())
                .build();
        Response response = null;
        try {
            response = okHttpClient.newCall(request).execute();
            int status = response.code();
            if (status == 200) {
                return response.body().string();
            }
        } catch (Exception e) {
            logger.error("okhttp put error >> ex = {}", ExceptionUtils.getStackTrace(e));
        } finally {
            if (response != null) {
                response.close();
            }
        }
        return responseBody;
    }
    /**
     * post
     *
     * @param url    请求的url
     * @param params post form 提交的参数
     * @return
     */
    public String post(String url, Map<String, String> params) {
        String responseBody = "";
        FormBody.Builder builder = new FormBody.Builder();
        //添加参数
        if (params != null && params.keySet().size() > 0) {
            for (String key : params.keySet()) {
                builder.add(key, params.get(key));
            }
        }
        Request request = new Request
                .Builder()
                .url(url)
                .post(builder.build())
                .build();
        Response response = null;
        try {
            response = okHttpClient.newCall(request).execute();
            int status = response.code();
            if (status == 200) {
                return response.body().string();
            }
        } catch (Exception e) {
            logger.error("okhttp post error >> ex = {}", ExceptionUtils.getStackTrace(e));
        } finally {
            if (response != null) {
                response.close();
            }
        }
        return responseBody;
    }
    /**
     * post 上传文件
     *
     * @param url
     * @param params
     * @param fileType
     * @return
     */
    public String postFile(String url, Map<String, Object> params, String fileType) {
        String responseBody = "";
        MultipartBody.Builder builder = new MultipartBody.Builder();
        //添加参数
        if (params != null && params.keySet().size() > 0) {
            for (String key : params.keySet()) {
                if (params.get(key) instanceof File) {
                    File file = (File) params.get(key);
                    builder.addFormDataPart(key, file.getName(), RequestBody.create(MediaType.parse(fileType), file));
                    continue;
                }
                builder.addFormDataPart(key, params.get(key).toString());
            }
        }
        Request request = new Request
                .Builder()
                .url(url)
                .post(builder.build())
                .build();
        Response response = null;
        try {
            response = okHttpClient.newCall(request).execute();
            int status = response.code();
            if (status == 200) {
                return response.body().string();
            }
        } catch (Exception e) {
            logger.error("okhttp postFile error >> ex = {}", ExceptionUtils.getStackTrace(e));
        } finally {
            if (response != null) {
                response.close();
            }
        }
        return responseBody;
    }
}

发布项目

就是启动这个项目

在测试类通过工具类来访问接口

package com.ysh;

import com.ysh.entity.User;
import com.ysh.service.UserService;
import com.ysh.utils.OkHttpUtil;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

import javax.annotation.Resource;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

@SpringBootTest
class SpringbootMybatisApplicationTests {
    @Resource
    private OkHttpUtil okHttpUtil;
    @Test
    void contextLoads() {
        Map<String,String> map = new HashMap<>();
        map.put("name","lixusheng");
        map.put("sex","1");
        map.put("age","18");
        String post = okHttpUtil.post("http://localhost:8080/add", map);
        System.out.println(post);
    }

}

成功

SpringBoot 集成 Okhttp3

原文：https://www.cnblogs.com/lxs1204/p/14276072.html