package?com.dmsdbj.library.app.util;

import?com.fasterxml.jackson.databind.objectMapper;
import?org.apache.commons.lang3.StringUtils;

import?java.io.*;
import?java.net.HttpURLConnection;
import?java.net.URL;
import?java.util.ArrayList;
import?java.util.HashMap;
import?java.util.List;
import?java.util.Map;

/**
?*?
RestfulApi請求工具

?*?使用說明
?*?@author?lnk
?*/
?public?class?RestfulHttpClient?{
????/**?全局默認(rèn)請求頭?*/
????private?static?final?Map?defaultHeaders?=?new?HashMap<>（）;
????/**?全局默認(rèn)請求頭?*/
????private?static?List?initializers;
????private?static?final?String?charset?=?“UTF-8“;
????private?static?final?int?readTimeout?=?60000;
????private?static?final?int?connectTimeout?=?60000;

????public?static?final?String?METHOD_GET?=?“GET“;
????public?static?final?String?METHOD_POST?=?“POST“;
????public?static?final?String?METHOD_PUT?=?“PUT“;
????public?static?final?String?METHOD_PATCH?=?“PATCH“;
????public?static?final?String?METHOD_DELETE?=?“DELETE“;

????private?RestfulHttpClient（）{?}

????/**
?????*?發(fā)起請求
?????*?@param?method????????請求方式：GET、POST、PUT、PATCH、DELETE
?????*?@param?url???????????請求url
?????*?@param?body??????????請求體body
?????*?@throws?IOException
?????*/
????public?static?HttpResponse?request（String?method?String?url?object?body）?throws?IOException?{
????????return?request（method?url?body?defaultHeaders）;
????}

????/**
?????*?發(fā)起請求
?????*?@param?method????????請求方式：GET、POST、PUT、PATCH、DELETE
?????*?@param?url???????????請求url
?????*?@param?body??????????請求體body
?????*?@param?headers???????請求頭
?????*?@throws?IOException
?????*/
????public?static?HttpResponse?request（String?method?String?url?object?body?Map?headers）?throws?IOException?{
????????return?getClient（url）.method（method）.body（body）.headers（headers）.request（）;
????}

????/**
?????*?獲取請求客戶端
?????*?@param?url
?????*?@return
?????*/
????public?static?HttpClient?getClient（String?url）{
????????return?new?HttpClient（url）;
????}

????/**
?????*?添加全局請求連接初始化器
?????*?@param?initializer
?????*/
????public?static?void?addInitializer（URLConnectionInitializer?initializer）{
????????if（initializer?==?null）{
????????????throw?new?NullPointerException（“不能添加空的連接初始化器“）;
????????}
????????if（initializers?==?null）{
????????????initializers?=?new?ArrayList<>（）;
????????}
????????initializers.add（initializer）;
????}

????/**
?????*?請求客戶端
?????*/
????public?static?class?HttpClient{
????????private?Map?headers;
????????private?int?readTimeout?=?RestfulHttpClient.readTimeout;
????????private?int?connectTimeout?=?RestfulHttpClient.connectTimeout;
????????private?String?method?=?METHOD_GET;
????????private?String?url;
????????private?Map?pathParams;
????????private?Map?queryParams;
????????private?Map?postParams;
????????priv