package com.stylefeng.guns.modular.system.util;
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import com.alibaba.fastjson.JSON;
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import org.apache.http.NameValuePair;
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import org.apache.http.client.config.RequestConfig;
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import org.apache.http.client.entity.UrlEncodedFormEntity;
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import org.apache.http.client.methods.CloseableHttpResponse;
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import org.apache.http.client.methods.HttpGet;
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import org.apache.http.client.methods.HttpPost;
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import org.apache.http.entity.ContentType;
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import org.apache.http.entity.EntityTemplate;
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import org.apache.http.entity.StringEntity;
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import org.apache.http.impl.client.CloseableHttpClient;
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import org.apache.http.impl.client.HttpClients;
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import org.apache.http.message.BasicNameValuePair;
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import org.apache.http.util.EntityUtils;
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import org.springframework.stereotype.Component;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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/**
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* http工具类
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*/
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@Component
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public class HttpClientUtil {
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private CloseableHttpClient httpClient;
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private CloseableHttpResponse httpResponse;
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private RequestConfig requestConfig;
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/**
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* 创建一个httpClient对象
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*/
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private void getHttpCline(){
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this.httpClient = HttpClients.createDefault();
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}
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private void setRequestConfig(){
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}
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/**
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* 创建一个POST请求实例
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* @param url 请求地址
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* @param params 请求参数
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*/
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private void setPostHttpRequset(String url, Map<String, Object> params, Map<String, String> header, String contentType){
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HttpPost httpPost = new HttpPost(url);
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if(null != header){
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for(String key : header.keySet()){
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httpPost.setHeader(key, header.get(key));
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}
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}
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List<NameValuePair> list = new ArrayList<>();
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if(null != params){
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Set<String> keys = params.keySet();
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for(String key : keys){
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list.add(new BasicNameValuePair(key, params.get(key).toString()));
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}
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}
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try {
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switch (contentType){
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case "form":
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httpPost.setEntity(new UrlEncodedFormEntity(list));
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break;
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case "json":
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String s = JSON.toJSONString(params);
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System.err.println(s);
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httpPost.setEntity(new StringEntity(s, ContentType.APPLICATION_JSON));
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break;
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}
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this.getHttpCline();
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httpResponse = this.httpClient.execute(httpPost);
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} catch (IOException e) {
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e.printStackTrace();
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this.close();
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}
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}
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/**
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* 获取get请求实例
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* @param url 请求地址
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* @param params 请求参数
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*/
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private void setGetHttpRequset(String url, Map<String, Object> params, Map<String, String> header){
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StringBuffer sb = new StringBuffer();
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String p = "";
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if(null != params){
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Set<String> keys = params.keySet();
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for(String key : keys){
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sb.append(key + "=" + params.get(key) + "&");
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}
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p = "?" + sb.substring(0, sb.length() - 1);
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}
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HttpGet httpGet = new HttpGet(url + p);
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if(null != header){
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for(String key : header.keySet()){
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httpGet.setHeader(key, header.get(key));
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}
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}
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this.getHttpCline();
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try {
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httpResponse = this.httpClient.execute(httpGet);
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} catch (IOException e) {
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e.printStackTrace();
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this.close();
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}
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}
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/**
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* 发送http请求
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* @param mothed "GET、POST、PUT、HEAD、DELETE、HEAD、OPTIONS"
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* @param url 请求地址
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* @param params 请求参数
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* @param header 请求头
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* @param contentType 参数请求方式form/json
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* @return
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*/
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public String pushHttpRequset(String mothed, String url, Map<String, Object> params, Map<String, String> header, String contentType){
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String content = null;
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switch (mothed){
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case "GET":
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this.setGetHttpRequset(url, params, header);
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break;
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case "POST":
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this.setPostHttpRequset(url, params, header, contentType);
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break;
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}
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if(httpResponse.getStatusLine().getStatusCode() == 200){
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try {
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content = EntityUtils.toString(httpResponse.getEntity());
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} catch (IOException e) {
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e.printStackTrace();
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this.close();
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}
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}else{
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try {
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content = "返回状态码：" + httpResponse.getStatusLine() + "。" + EntityUtils.toString(httpResponse.getEntity());
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} catch (IOException e) {
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e.printStackTrace();
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this.close();
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}
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}
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this.close();
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return content;
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}
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/**
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* 发送XML请求
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* @param url 请求地址
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* @param xml XML数据
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* @param header 自定义请求头
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* @return
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*/
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public String pushHttpRequsetXml(String url, String xml, Map<String, String> header){
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HttpPost httpPost = new HttpPost(url);
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for(String key : header.keySet()){
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httpPost.setHeader(key, header.get(key));
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}
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httpPost.setHeader("Content-Type", "application/xml");
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try {
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httpPost.setEntity(new StringEntity(xml, "UTF-8"));
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this.getHttpCline();
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httpResponse = this.httpClient.execute(httpPost);
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String content = null;
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if(httpResponse.getStatusLine().getStatusCode() == 200){
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try {
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content = EntityUtils.toString(httpResponse.getEntity(), "UTF-8");
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} catch (IOException e) {
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e.printStackTrace();
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this.close();
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}
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}else{
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try {
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content = "返回状态码：" + httpResponse.getStatusLine() + "。" + EntityUtils.toString(httpResponse.getEntity());
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} catch (IOException e) {
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e.printStackTrace();
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this.close();
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}
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}
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this.close();
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return content;
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} catch (IOException e) {
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e.printStackTrace();
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this.close();
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}
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return null;
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}
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/**
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* 关闭资源
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*/
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private void close(){
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try {
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httpClient.close();
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httpResponse.close();
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} catch (IOException e) {
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e.printStackTrace();
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}finally {
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try {
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if(null != httpClient){
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httpClient.close();
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}
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if(null != httpResponse){
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httpResponse.close();
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}
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}catch (Exception e){
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e.printStackTrace();
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}
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}
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}
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}
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