RestTemplateUtils

import com.alibaba.fastjson.JSONObject;
import com.ruoyi.common.core.constant.Constants;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicHeader;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;
import org.springframework.http.*;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.client.RestTemplate;

import javax.net.ssl.*;
import java.io.*;
import java.net.ConnectException;
import java.net.SocketTimeoutException;
import java.net.URL;
import java.net.URLConnection;
import java.security.cert.X509Certificate;
import java.util.Map;

/**
* @Description: 调用第三方接口通用类
* @Author: liuzhifeng
* @CreateDate: 2020/9/15 9:40
* @UpdateUser: liuzhifeng
* @UpdateDate: 2020/9/15 9:40
* @UpdateRemark: 修改内容
* @Version: 1.0
*/
@Slf4j
public class RestTemplateUtils{
public static final RestTemplate REST_TEMPLATE;
/**
* json
*/
private static final HttpHeaders HEADERSJ;
/**
* form-data
*/
private static final HttpHeaders HEADERSF;


static {
HttpComponentsClientHttpRequestFactory httpRequestFactory =
new HttpComponentsClientHttpRequestFactory(HttpClientBuilder.create()
.setMaxConnTotal(200)
.setMaxConnPerRoute(100)
.build());
httpRequestFactory.setConnectionRequestTimeout(100000);
httpRequestFactory.setConnectTimeout(100000);
httpRequestFactory.setReadTimeout(100000);
REST_TEMPLATE = new RestTemplate(httpRequestFactory);

HEADERSJ = new HttpHeaders();
HEADERSJ.setContentType(MediaType.APPLICATION_JSON_UTF8);

HEADERSF = new HttpHeaders();
HEADERSF.add("Content-Type", MediaType.APPLICATION_FORM_URLENCODED_VALUE);
}

public static String get(String url) {
return REST_TEMPLATE.getForObject(url, String.class);
}

public static String request(String url, HttpMethod method) {
return REST_TEMPLATE.exchange(url,
method,
new HttpEntity<String>(HEADERSJ),
String.class).getBody();
}

/**
* header为：json
*
* @param url
* @param requestParams
* @return
* @throws Exception
*/
public static String postForJSON(String url, Object requestParams) throws Exception {
HttpEntity<Object> formEntity =
new HttpEntity<>(JSONObject.toJSONString(requestParams), HEADERSJ);
String responseJson;
try {
responseJson = REST_TEMPLATE.postForObject(url, formEntity, String.class);
} catch (Exception e) {
throw e;
}
return responseJson;
}

/**
* post表单请求
*
* @param url
* @param map
* @return
*/
public static String postFormData(String url, Map<String, String> map) {
MultiValueMap<String, String> reqMap = new LinkedMultiValueMap<>();
for (Map.Entry<String, String> entry : map.entrySet()) {
reqMap.add(entry.getKey(), entry.getValue());
}
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
String res;
try {
HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<>(reqMap, headers);
ResponseEntity<String> response = REST_TEMPLATE.postForEntity(url, request, String.class);
res = response.getBody();
} catch (Exception e) {
throw e;
}
return res;
}

/**
* header为：form-data
*
* @param url
* @param requestParams
* @return
* @throws Exception
*/
public static JSONObject postForForm(String url, Map<String, ? extends Object> requestParams) throws Exception {
LinkedMultiValueMap body = new LinkedMultiValueMap();
for (String key : requestParams.keySet()) {
body.add(key, requestParams.get(key));
}
HttpEntity<String> entity = new HttpEntity(body, HEADERSF);
JSONObject responseJson;
try {
responseJson = REST_TEMPLATE.postForObject(url, entity, JSONObject.class);
} catch (Exception e) {
throw e;
}
return responseJson;
}


/**
* 发送post请求
* @param url 路径
* @param jsonObject 参数(json类型)
* @param encoding 编码格式
* @return
* @throws IOException
*/
public static String sendjsonPost(String url, JSONObject jsonObject, String encoding) throws Exception, IOException{
String body = "";

//创建httpclient对象
CloseableHttpClient client = HttpClients.createDefault();
//创建post方式请求对象
HttpPost httpPost = new HttpPost(url);

//装填参数
StringEntity s = new StringEntity(jsonObject.toString(), "utf-8");
s.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE,
"application/json"));
//设置参数到请求对象中
httpPost.setEntity(s);
System.out.println("请求地址："+url);
// System.out.println("请求参数："+nvps.toString());

//设置header信息
//指定报文头【Content-type】、【User-Agent】
// httpPost.setHeader("Content-type", "application/x-www-form-urlencoded");
httpPost.setHeader("Content-type", "application/json");
httpPost.setHeader("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");

//执行请求操作，并拿到结果（同步阻塞）
CloseableHttpResponse response = client.execute(httpPost);
//获取结果实体
org.apache.http.HttpEntity entity = response.getEntity();
if (entity != null) {
//按指定编码转换结果实体为String类型
body = EntityUtils.toString(entity, encoding);
}
EntityUtils.consume(entity);
//释放链接
response.close();
return body;
}


/**
* 向指定 URL 发送GET方法的请求
*
* @param url 发送请求的 URL
* @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
* @return 所代表远程资源的响应结果
*/
public static String sendGet(String url, String param)
{
return sendGet(url, param, Constants.UTF8);
}

/**
* 向指定 URL 发送GET方法的请求
*
* @param url 发送请求的 URL
* @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
* @param contentType 编码类型
* @return 所代表远程资源的响应结果
*/
public static String sendGet(String url, String param, String contentType)
{
StringBuilder result = new StringBuilder();
BufferedReader in = null;
try
{
String urlNameString = url + "?" + param;
log.info("sendGet - {}", urlNameString);
URL realUrl = new URL(urlNameString);
URLConnection connection = realUrl.openConnection();
connection.setRequestProperty("accept", "*/*");
connection.setRequestProperty("connection", "Keep-Alive");
connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
connection.connect();
in = new BufferedReader(new InputStreamReader(connection.getInputStream(), contentType));
String line;
while ((line = in.readLine()) != null)
{
result.append(line);
}
log.info("recv - {}", result);
}
catch (ConnectException e)
{
log.error("调用HttpUtils.sendGet ConnectException, url=" + url + ",param=" + param, e);
}
catch (SocketTimeoutException e)
{
log.error("调用HttpUtils.sendGet SocketTimeoutException, url=" + url + ",param=" + param, e);
}
catch (IOException e)
{
log.error("调用HttpUtils.sendGet IOException, url=" + url + ",param=" + param, e);
}
catch (Exception e)
{
log.error("调用HttpsUtil.sendGet Exception, url=" + url + ",param=" + param, e);
}
finally
{
try
{
if (in != null)
{
in.close();
}
}
catch (Exception ex)
{
log.error("调用in.close Exception, url=" + url + ",param=" + param, ex);
}
}
return result.toString();
}

/**
* 向指定 URL 发送POST方法的请求
*
* @param url 发送请求的 URL
* @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
* @return 所代表远程资源的响应结果
*/
public static String sendPost(String url, String param)
{
PrintWriter out = null;
BufferedReader in = null;
StringBuilder result = new StringBuilder();
try
{
String urlNameString = url;
log.info("sendPost - {}", urlNameString);
URL realUrl = new URL(urlNameString);
URLConnection conn = realUrl.openConnection();
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
conn.setRequestProperty("Accept-Charset", "utf-8");
conn.setRequestProperty("contentType", "utf-8");
conn.setDoOutput(true);
conn.setDoInput(true);
out = new PrintWriter(conn.getOutputStream());
out.print(param);
out.flush();
in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8"));
String line;
while ((line = in.readLine()) != null)
{
result.append(line);
}
log.info("recv - {}", result);
}
catch (ConnectException e)
{
log.error("调用HttpUtils.sendPost ConnectException, url=" + url + ",param=" + param, e);
}
catch (SocketTimeoutException e)
{
log.error("调用HttpUtils.sendPost SocketTimeoutException, url=" + url + ",param=" + param, e);
}
catch (IOException e)
{
log.error("调用HttpUtils.sendPost IOException, url=" + url + ",param=" + param, e);
}
catch (Exception e)
{
log.error("调用HttpsUtil.sendPost Exception, url=" + url + ",param=" + param, e);
}
finally
{
try
{
if (out != null)
{
out.close();
}
if (in != null)
{
in.close();
}
}
catch (IOException ex)
{
log.error("调用in.close Exception, url=" + url + ",param=" + param, ex);
}
}
return result.toString();
}

public static String sendSSLPost(String url, String param)
{
StringBuilder result = new StringBuilder();
String urlNameString = url + "?" + param;
try
{
log.info("sendSSLPost - {}", urlNameString);
SSLContext sc = SSLContext.getInstance("SSL");
sc.init(null, new TrustManager[] { new TrustAnyTrustManager() }, new java.security.SecureRandom());
URL console = new URL(urlNameString);
HttpsURLConnection conn = (HttpsURLConnection) console.openConnection();
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
conn.setRequestProperty("Accept-Charset", "utf-8");
conn.setRequestProperty("contentType", "utf-8");
conn.setDoOutput(true);
conn.setDoInput(true);

conn.setSSLSocketFactory(sc.getSocketFactory());
conn.setHostnameVerifier(new TrustAnyHostnameVerifier());
conn.connect();
InputStream is = conn.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String ret = "";
while ((ret = br.readLine()) != null)
{
if (ret != null && !ret.trim().equals(""))
{
result.append(new String(ret.getBytes("ISO-8859-1"), "utf-8"));
}
}
log.info("recv - {}", result);
conn.disconnect();
br.close();
}
catch (ConnectException e)
{
log.error("调用HttpUtils.sendSSLPost ConnectException, url=" + url + ",param=" + param, e);
}
catch (SocketTimeoutException e)
{
log.error("调用HttpUtils.sendSSLPost SocketTimeoutException, url=" + url + ",param=" + param, e);
}
catch (IOException e)
{
log.error("调用HttpUtils.sendSSLPost IOException, url=" + url + ",param=" + param, e);
}
catch (Exception e)
{
log.error("调用HttpsUtil.sendSSLPost Exception, url=" + url + ",param=" + param, e);
}
return result.toString();
}

private static class TrustAnyTrustManager implements X509TrustManager
{
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType)
{
}

@Override
public void checkServerTrusted(X509Certificate[] chain, String authType)
{
}

@Override
public X509Certificate[] getAcceptedIssuers()
{
return new X509Certificate[] {};
}
}

private static class TrustAnyHostnameVerifier implements HostnameVerifier
{
@Override
public boolean verify(String hostname, SSLSession session)
{
return true;
}
}

}