各种形式的JAVA网络请求工具类POST/GET/PUT
各种形式的JAVA网络请求工具类POST/GET/PUT
package com.utils;
import lombok.extern.slf4j.Slf4j;
import okhttp3.*;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.BasicResponseHandler;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
@Slf4j
public class HttpRequest {
/**
* 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) {
LogUtils.debug("url:" + url);
LogUtils.debug("param:" + param);
PrintWriter out = null;
BufferedReader in = null;
StringBuilder sb = new StringBuilder();
try {
URL realUrl = new URL(url);
// 打开和URL之间的连接
URLConnection conn = realUrl.openConnection();
// 设置通用的请求属性
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 发送POST请求必须设置如下两行
conn.setDoOutput(true);
conn.setDoInput(true);
// 获取URLConnection对象对应的输出流
out = new PrintWriter(conn.getOutputStream());
// 发送请求参数
out.print(param);
// flush输出流的缓冲
out.flush();
// 定义BufferedReader输入流来读取URL的响应
in = new BufferedReader(
new InputStreamReader(conn.getInputStream(), "UTF-8"));
String line;
while ((line = in.readLine()) != null) {
sb.append(line);
}
} catch (Exception e) {
e.printStackTrace();
CommonMail.sendException("http post", "参数:"+param +"/n"+DealString.getFromException(e), 1);
}
// 使用finally块来关闭输出流、输入流
finally {
try {
if (out != null) {
out.close();
}
if (in != null) {
in.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
return sb.toString();
}
/**
* 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 URL 所代表远程资源的响应结果
*/
public static String sendGet(String url, Map param) {
StringBuilder sb = new StringBuilder();
BufferedReader in = null;
try {
String urlNameString = url + "?" + getParam(param);
URL realUrl = new URL(urlNameString);
// 打开和URL之间的连接
URLConnection connection = realUrl.openConnection();
// 设置通用的请求属性
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.setRequestProperty("Content-Type", "application/x-www-form-urlencoded; UTF-8");
// 建立实际的连接
connection.connect();
// 获取所有响应头字段
Map> map = connection.getHeaderFields();
// 遍历所有的响应头字段
map.forEach((k,v)->{
log.info("{}--->{}",k,v);
});
// 定义 BufferedReader输入流来读取URL的响应
in = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
String line;
while ((line = in.readLine()) != null) {
sb.append(line);
}
} catch (Exception e) {
LogUtils.debug("发送GET请求出现异常！" + e);
e.printStackTrace();
}
// 使用finally块来关闭输入流
finally {
try {
if (in != null) {
in.close();
}
} catch (Exception e2) {
e2.printStackTrace();
}
}
return sb.toString();
}
/**
* 向指定URL发送GET方法的请求 application/json
*
* @param url
* @param json
* @return
*/
public static String sendPostWithJson(String url, String json) {
String returnValue = "接口调用失败";
CloseableHttpClient httpClient = HttpClients.createDefault();
ResponseHandler responseHandler = new BasicResponseHandler();
try {
//第一步：创建HttpClient对象
httpClient = HttpClients.createDefault();
//第二步：创建httpPost对象
HttpPost httpPost = new HttpPost(url);
//第三步：给httpPost设置JSON格式的参数
StringEntity requestEntity = new StringEntity(json, "utf-8");
requestEntity.setContentEncoding("UTF-8");
httpPost.setHeader("Content-type", "application/json");
httpPost.setEntity(requestEntity);
//第四步：发送HttpPost请求，获取返回值
returnValue = httpClient.execute(httpPost, responseHandler);
} catch (Exception e) {
e.printStackTrace();
CommonMail.sendException("sendPostWithJson请求失败!", "url=" + url + "\r\njson=" + json + "\r\n" + DealString.getFromException(e), 1);
} finally {
try {
httpClient.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
//第五步：处理返回值
return returnValue;
}
/**
* 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Map的形式,请在key为参数，value为值。
* @return 所代表远程资源的响应结果
* @throws Exception
*/
public static String sendPost(String url, Map param) throws Exception {
PrintWriter out = null;
BufferedReader in = null;
StringBuffer result = new StringBuffer();
try {
URL realUrl = new URL(url);
// 打开和URL之间的连接
URLConnection conn = realUrl.openConnection();
HttpURLConnection httpUrlConn = (HttpURLConnection) conn;
// 设置通用的请求属性
httpUrlConn.setRequestProperty("accept", "*/*");
httpUrlConn.setRequestProperty("connection", "Keep-Alive");
httpUrlConn.setRequestProperty("user-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 发送POST请求必须设置如下两行
httpUrlConn.setDoOutput(true);
httpUrlConn.setDoInput(true);
httpUrlConn.setRequestMethod("POST");
httpUrlConn.setReadTimeout(5000);
httpUrlConn.setConnectTimeout(5000);
// 获取URLConnection对象对应的输出流
out = new PrintWriter(httpUrlConn.getOutputStream());
// 发送请求参数
out.print(getParam(param));
// flush输出流的缓冲
out.flush();
// 定义BufferedReader输入流来读取URL的响应
in = new BufferedReader(
new InputStreamReader(httpUrlConn.getInputStream(),"UTF-8"));
String line;
while ((line = in.readLine()) != null) {
result.append(line);
}
} catch (Exception e) {
LogUtils.debug("发送 POST 请求出现异常！"+e);
e.printStackTrace();
throw new Exception("发送 POST 请求出现异常！",e);
}
//使用finally块来关闭输出流、输入流
finally{
try{
if(out!=null){
out.close();
}
if(in!=null){
in.close();
}
}
catch(IOException ex){
ex.printStackTrace();
}
}
return result.toString();
}
/**
* 向指定 URL 发送PUT方法的请求
* @param url
* @param json
* @return
*/
public static String sendPutWithJson(String url, String json) {
String returnValue = "";
CloseableHttpClient httpClient = HttpClients.createDefault();
ResponseHandler responseHandler = new BasicResponseHandler();
try {
//第一步：创建HttpClient对象
httpClient = HttpClients.createDefault();
//第二步：创建httpPost对象
HttpPut httpPost = new HttpPut(url);
//第三步：给httpPost设置JSON格式的参数
StringEntity requestEntity = new StringEntity(json, "utf-8");
requestEntity.setContentEncoding("UTF-8");
httpPost.setHeader("Content-type", "application/json");
httpPost.setEntity(requestEntity);
//第四步：发送HttpPost请求，获取返回值
returnValue = httpClient.execute(httpPost, responseHandler);
} catch (Exception e) {
e.printStackTrace();
CommonMail.sendException("sendPostWithJson请求失败!", "url=" + url + "\r\njson=" + json + "\r\n" + DealString.getFromException(e), 1);
} finally {
try {
httpClient.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
//第五步：处理返回值
return returnValue;
}
public static String sendXiMaPost(String url, Map paramMap) {
String param = getParam(paramMap);
return sendXiMaPost(url, param);
}
/**
* 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 sendXiMaPost(String url, String param) {
PrintWriter out = null;
BufferedReader in = null;
String result = "";
try {
URL realUrl = new URL(url);
// 打开和URL之间的连接
HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection();
// 设置通用的请求属性
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 发送POST请求必须设置如下两行
conn.setDoOutput(true);
conn.setDoInput(true);
// 获取URLConnection对象对应的输出流
out = new PrintWriter(new OutputStreamWriter(conn.getOutputStream(), "utf-8"));
// 发送请求参数
out.print(param);
// flush输出流的缓冲
out.flush();
//判断返回码
if (conn.getResponseCode() == 401 || conn.getResponseCode() == 400) {
// return "";
in = new BufferedReader(new InputStreamReader(conn.getErrorStream(), "UTF-8"));
} else {
// 定义BufferedReader输入流来读取URL的响应
in = new BufferedReader(
new InputStreamReader(conn.getInputStream(), "UTF-8"));
}
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
e.printStackTrace();
CommonMail.sendException("http post", "参数:" + param + "/n" + DealString.getFromException(e), 1);
}
// 使用finally块来关闭输出流、输入流
finally {
try {
if (out != null) {
out.close();
}
if (in != null) {
in.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
return result;
}
/**
* 构建请求参数
* @param params
* @return
*/
public static String getParam(Map params) {
StringBuffer sb = new StringBuffer();
String str = "";
if(params!=null){
for (Map.Entry e : params.entrySet()) {
sb.append(e.getKey());
sb.append("=");
sb.append(e.getValue());
sb.append("&");
}
str = sb.substring(0, sb.length() - 1);
}
return str;
}
public static String encodeURL(String url){
return url.replace("%", "%25").replace("+", "%2B").replace(" ", "%20").replace("/", "%2F")
.replace("?", "%3F").replace("#", "%23").replace("&", "%26").replace("=", "%3D")
.replace(":", "%3A");
}
public static String sendPostJSON(String url, String param) throws Exception {
OkHttpClient client = new OkHttpClient.Builder()
.connectTimeout(10, TimeUnit.SECONDS)
.retryOnConnectionFailure(Boolean.FALSE)
.readTimeout(10, TimeUnit.SECONDS)
.writeTimeout(50, TimeUnit.SECONDS)
.build();
RequestBody body = RequestBody.create(MediaType.parse("application/json"), param);
Request.Builder request = new Request.Builder().post(body).url(url);
Response response = client.newCall(request.build()).execute();
InputStream is = response.body().byteStream();
String s = new String(readInputStream(is));
LogUtils.debug(s);
return s;
}
private static byte[] readInputStream(InputStream inStream) throws Exception {
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len;
while ((len = inStream.read(buffer)) != -1) {
outStream.write(buffer, 0, len);
}
inStream.close();
return outStream.toByteArray();
}
}