OKHttp3工具类

Java发送http请求，与RestTemplate功能相同RestTemplate方式发送http请求。

1.maven

  <dependency>
    <groupId>com.squareup.okhttp3</groupId>
    <artifactId>okhttp</artifactId>
    <version>3.6.0</version>
  </dependency>
  

2.HttpUtil

package com.infoview.base.util;

import okhttp3.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 发送Http请求
 */

public class HttpUtil {
   
   

    private static final Logger log = LoggerFactory.getLogger(HttpUtil.class);
    public static final MediaType JSON = MediaType.parse("application/json; charset=utf-8");
    public static final MediaType XWWWFORMURLENCODED = MediaType
            .parse("application/x-www-form-urlencoded; charset=utf-8");

    /**
     * 发送post请求
     *
     * @param url
     * @param body
     * @return
     */
    public static String postBody(String url, RequestBody body) {
   
   
        OkHttpClient httpClient = new OkHttpClient();
        Request request = new Request.Builder().url(url).post(body).build();
        try {
   
   
            return httpClient.newCall(request).execute().body().string();
        } catch (IOException e) {
   
   
            log.error("HttpUtil postBody error", e);
        }
        return null;
    }

    /**
     * 发送需求检查响应成功的post
     */
    public static String post(String url, Object params) {
   
   
        return post(url, params, true);
    }

    /**
     * 发送Post 请求
     *
     * @param url
     * @param params
     * @param checkSuc 是否响检查应成功
     * @return
     */
    public static String post(String url, Object params, boolean checkSuc) {
   
   
        OkHttpClient okHttpClient = new OkHttpClient();
        String str = JsonUtil.objToJsonStr(params);
        log.info("postJsonParams:" + str);
        RequestBody requestBody = RequestBody.create(JSON, str);