Java-OkHttpUtil扩展工具类
先把基于OkHttp的使用进行工具化，形成公共类
配置引入
<dependency>
<groupId>com.squareup.okhttp3</groupId>
<artifactId>okhttp</artifactId>
<version>3.14.4</version>
</dependency>
扩展工具
import lombok.extern.slf4j.Slf4j; import okhttp3.*; import org.apache.commons.codec.binary.Base64; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; import java.util.Map; import java.util.concurrent.TimeUnit; /** * OkHttpUtil */ @Slf4j public class TyOkHttpUtil { private static final OkHttpClient client = new OkHttpClient.Builder() .readTimeout(5, TimeUnit.SECONDS) // 设置超时时间 .build(); public static final MediaType MEDIA_TYPE_JSON = MediaType.get("application/json; charset=utf-8"); /** * 发起Get请求 * * @param url url * @param params 参数 * @return 响应结果 */ public static String doGet(String url, Map<String, Object> params) { Call call = createGetCall(url, params); return execute(call); } /** * 发起Get请求,返回请求流，用于文件下载 * * @param url url * @param params 参数 * @return 响应结果 */ public static InputStream doGetFileStream(String url, Map<String, Object> params) { Call call = createGetCall(url, params); return executeAndReturnStream(call); } /** * 发起 Post请求, 使用form表单参数 * * @param url url * @param params 参数 * @return 响应结果 */ public static String doPost(String url, Map<String, Object> params) { Call call = createPostCall(url, params); return execute(call); } /** * 发起 post请求, 使用json参数 * * @param url url * @param json json参数 * @return resp */ public static String doPost(String url, String json) { Call call = createPostJsonCall(url, json); return execute(call); } /** * [异步] 发起Get请求 * * @param url url * @param params 参数 * @param callback 回调方法 */ public static void doGetAsync(String url, Map<String, Object> params, Callback callback) { Call call = createGetCall(url, params); call.enqueue(callback); } /** * [异步] 发起 Post请求 * * @param url url * @param params 参数 */ public static void doPostAsync(String url, Map<String, Object> params, Callback callback) { Call call = createPostCall(url, params); call.enqueue(callback); } /** * [异步] 发起 post请求, 使用json参数 * * @param url url * @param json json参数 */ public static void doPostAsync(String url, String json, Callback callback) { Call call = createPostJsonCall(url, json); call.enqueue(callback); } /** * Get请求, 构造 Call对象 * * @param url 请求url * @param params 请求参数 * @return Call */ private static Call createGetCall(String url, Map<String, Object> params) { Request.Builder builder = new Request.Builder(); Request request = builder.url(url).build(); // 设置参数 HttpUrl httpUrl = createHttpUrl(request, params); builder.url(httpUrl).build(); return client.newCall(builder.build()); } /** * Post请求, 构造 Call对象 * * @param url 请求url * @param params 请求参数 * @return Call */ private static Call createPostCall(String url, Map<String, Object> params) { Request request = new Request.Builder() .post(createFormBody(params)) .url(url) .build(); return client.newCall(request); } /** * Post请求, 构造 Call对象 * * @param url 请求url * @param json 请求参数 * @return Call */ private static Call createPostJsonCall(String url, String json) { Request request = new Request.Builder() .post(RequestBody.create(MEDIA_TYPE_JSON, json)) .url(url) .build(); return client.newCall(request); } /** * 为 get请求设置参数 * * @param request request对象 * @param params 请求参数 * @return 设置了参数的 HttpUrl对象 */ private static HttpUrl createHttpUrl(Request request, Map<String, Object> params) { HttpUrl.Builder urlBuilder = request.url().newBuilder(); if (params != null && params.size() > 0) { for (Map.Entry<String, Object> entry : params.entrySet()) { urlBuilder.addQueryParameter(entry.getKey(), String.valueOf(entry.getValue())); } } return urlBuilder.build(); } /** * 为 post请求设置参数 * * @param params 请求参数 * @return FormBody */ private static FormBody createFormBody(Map<String, Object> params) { FormBody.Builder builder = new FormBody.Builder(); if (params != null && params.size() > 0) { for (Map.Entry<String, Object> entry : params.entrySet()) { builder.add(entry.getKey(), String.valueOf(entry.getValue())); } } return builder.build(); } /** * 同步执行 http请求 * * @param call call对象 * @return 响应结果 */ public static String execute(Call call) { String respStr = ""; try { ResponseBody body = call.execute().body(); if (body != null) { respStr = body.string(); } } catch (IOException e) { e.printStackTrace(); } return respStr; } /** * 同步执行 http请求 * * @param call call对象 * @return 响应结果 */ public static InputStream executeAndReturnStream(Call call) { InputStream respStr = null; try { ResponseBody body = call.execute().body(); if (body != null) { return body.byteStream(); } } catch (IOException e) { e.printStackTrace(); } return respStr; } /** * 将inputstream转为Base64 * * @param is * @return * @throws Exception */ public static String inputStreamToBase64(InputStream is) throws Exception { byte[] data = null; try { ByteArrayOutputStream swapStream = new ByteArrayOutputStream(); byte[] buff = new byte[100]; int rc = 0; while ((rc = is.read(buff, 0, 100)) > 0) { swapStream.write(buff, 0, rc); } data = swapStream.toByteArray(); } catch (IOException e) { e.printStackTrace(); } finally { if (is != null) { try { is.close(); } catch (IOException e) { throw new Exception("输入流关闭异常"); } } } return Base64.encodeBase64String(data); } }
使用示例
//拼接参数 String tgFullUrl="http://xxx.com/abc"; String objRet=""; String xbUserToken="test";
String xbAppToken="test"; Map<String, Object> listKv=new HashMap<>();
try { listKv.put("xbUserToken",xbUserToken); listKv.put("xbAppToken",XbAppToken); listKv.put("current","1"); listKv.put("limit","10"); listKv.put("pageSize","10"); listKv.put("filters","leiXing eq xw"); listKv.put("orderBy","update_time desc"); queryData=TyOkHttpUtil.doGet(tgFullUrl,listKv); if(StringUtils.isEmpty(queryData)){ return objRet; } } catch (Exception ex){ log.error(ex.getMessage(),ex); return objRet; }
文件下载测试
try { //基础路径 String tgFullUrl=tgRootUrl+URL_NEWS_IMAGE_PATH+picId; inputStream=TyOkHttpUtil.doGetFileStream(tgFullUrl,listKv); if(ObjectUtil.isEmpty(inputStream)) { objRet.setMsg("二期新闻图片接口获取失败."); return objRet; } } catch (Exception ex){ log.error(ex.getMessage(),ex); objRet.setMsg("二期新闻图片接口获取失败."); return objRet; } try { String fileBase64=TyOkHttpUtil.inputStreamToBase64(inputStream); objRet.setSuccess(true); objRet.setData(fileBase64); objRet.setMsg("文件下载完成"); } catch (Exception ex){ log.error(ex.getMessage(),ex); objRet.setSuccess(false); objRet.setMsg("文件下载失败"); } return objRet;
测试Ok
