http访问接口post和get方法类
远程访问接口get和post方法。
引用的包
org.apache.httpcomponents
httpclient
4.5.2
org.apache.httpcomponents
httpmime
4.5.2
代码
package com.bingo.common.utils;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import org.apache.http.HttpResponse;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.HttpGet;
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.HttpClients;
import org.apache.http.util.EntityUtils;
import org.apache.tomcat.util.http.fileupload.FileItem;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.*;
import java.net.ConnectException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Map;
/**
* HTTP接口工具类
* {@link HttpUtils}
*
* DONE : 调用http接口工具类
*
* @author shenlu
*/
public class HttpUtils {
private static Logger log = LoggerFactory.getLogger(HttpUtils.class);
/**
* httpget调用http接口
* @param url
* @param jsonStr
* @param t
* @param
* @return
* @throws IOException
* @throws IllegalAccessException
* @throws InstantiationException
*/
public static T httpGet(String url, String jsonStr,Class t)throws IOException, IllegalAccessException, InstantiationException {
HttpResponse response = null;
JSONObject jsonObject = null;
T instance = t.newInstance();
String result="";
try {
if(url==null||"".equals(url)){
throw new Exception("接口调用接口方法不能为空!");
}
//创建httpClient实例
CloseableHttpClient httpClient = HttpClients.createDefault();
//创建实例方法
HttpGet httpget = new HttpGet(url);
httpget.addHeader("Content-Type", "text/plain;charset=UTF-8");
response = httpClient.execute(httpget);
if(response.getStatusLine().getStatusCode()==200){//如果状态码为200,就是正常返回
result=EntityUtils.toString(response.getEntity(),"UTF-8");
}
jsonObject =JSON.parseObject(result);
if(instance instanceof JSONObject) {
return (T) jsonObject;
}
T resultBean = (T) JSONObject.parseObject(jsonObject.toString(), t);
return resultBean;
} catch (ConnectException ce) {
log.error(url+"接口 --server connection timed out:{}",ce);
ce.printStackTrace();
} catch (Exception e) {
log.error(url+"--接口异常--",e);
e.printStackTrace();
}
return t.newInstance();
}
/**
*
* @param url
* @param jsonStr
* @param t
* @param
* @throws IOException
*/
public static T httpPost(String url, String jsonStr,Class t) throws IOException, IllegalAccessException, InstantiationException {
JSONObject jsonObject = null;
HttpResponse response = null;
//创建httpClient实例
CloseableHttpClient httpClient = HttpClients.createDefault();
T instance = t.newInstance();
try {
if(url==null||"".equals(url)){
throw new Exception("接口调用接口方法不能为空!");
}
//创建实例方法
HttpPost httppost = new HttpPost(url);
httppost.addHeader("Content-Type", "application/json;charset=UTF-8");
//设置连接超时时间和数据获取超时时间--单位：ms
RequestConfig requestConfig = RequestConfig.custom()
.setConnectTimeout(5000).setConnectionRequestTimeout(5000)
.setSocketTimeout(5000).build();
httppost.setConfig(requestConfig);
//设置http request body请求体
if (null != jsonStr) {
//解决中文乱码问题
StringEntity myEntity = new StringEntity(jsonStr, "UTF-8");
httppost.setEntity(myEntity);
}
response = httpClient.execute(httppost);
String result=EntityUtils.toString(response.getEntity(),"UTF-8");
log.info("返回结果:"+result);
//得到返回的字符串
jsonObject =JSON.parseObject(result);
if(instance instanceof JSONObject) {
return (T) jsonObject;
}
T resultBean = (T) JSONObject.parseObject(jsonObject.toString(), t);
return resultBean;
} catch (ConnectException ce) {
log.error(url+"接口 --server connection timed out:{}",ce);
ce.printStackTrace();
} catch (Exception e) {
log.error(url+"--接口异常--",e);
e.printStackTrace();
}finally{
httpClient.close();
}
return t.newInstance();
}
/**
*
* @param urlStr
* @param map
* @param t
* @param
* @return
* @throws IOException
* @throws IllegalAccessException
* @throws InstantiationException
*/
public static T httpFormDataPost(String urlStr, Map map, Class t) throws IllegalAccessException, InstantiationException {
JSONObject jsonObject = null;
T instance = t.newInstance();
String result="";
// 每个post参数之间的分隔。随意设定，只要不会和其他的字符串重复即可。
String BOUNDARY = "----------HV2ymHFg03ehbqgZCaKO6jyH";
HttpURLConnection conn = null;
try {
if(urlStr==null||"".equals(urlStr)){
throw new Exception("接口调用接口方法不能为空!");
}
URL url=new URL(urlStr);
conn = (HttpURLConnection)url.openConnection();
conn.setConnectTimeout(5000);
conn.setReadTimeout(30000);
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.6)");
conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);
// 头
String boundary = BOUNDARY;
// 传输内容
StringBuffer contentBody = new StringBuffer("--" + BOUNDARY);
// 尾
String endBoundary = "\r\n--" + boundary + "--\r\n";
OutputStream out = conn.getOutputStream();
// 1. 处理文字形式的POST请求
for (Map.Entry entry : map.entrySet()) {
contentBody.append("\r\n")
.append("Content-Disposition: form-data; name=\"")
.append(entry.getKey() + "\"")
.append("\r\n")
.append("\r\n")
.append(entry.getValue())
.append("\r\n")
.append("--")
.append(boundary);
}
String boundaryMessage1 = contentBody.toString();
out.write(boundaryMessage1.getBytes("utf-8"));
out.write("------------HV2ymHFg03ehbqgZCaKO6jyH--\r\n"
.getBytes("UTF-8"));
// 3. 写结尾
out.write(endBoundary.getBytes("utf-8"));
out.flush();
out.close();
// 读取返回数据
StringBuffer strBuf = new StringBuffer();
BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line = null;
while ((line = reader.readLine()) != null) {
strBuf.append(line).append("\n");
}
result = strBuf.toString();
log.info("返回结果:"+result);
reader.close();
reader = null;
jsonObject =JSON.parseObject(result);
if(instance instanceof JSONObject) {
return (T) jsonObject;
}
T resultBean = (T) JSONObject.parseObject(jsonObject.toString(), t);
return resultBean;
} catch (ConnectException ce) {
log.error(urlStr+"接口 --server connection timed out:{}",ce);
ce.printStackTrace();
} catch (Exception e) {
log.error(urlStr+"--接口异常--",e);
e.printStackTrace();
} finally {
if (conn != null) {
conn.disconnect();
conn = null;
}
}
return t.newInstance();
}
/**
* 上传多媒体
* @param urlStr
* @param file
* @param fileitem
* @param t
* @param
* @return
* @throws IllegalAccessException
* @throws InstantiationException
*/
public static T postformUpload(String urlStr, File file, FileItem fileitem,Class t) throws IllegalAccessException, InstantiationException{
JSONObject jsonObject = null;
T instance = t.newInstance();
String result="";
HttpURLConnection conn = null;
String BOUNDARY = "---------------------------123821742118716"; //boundary就是request头和上传文件内容的分隔符
try {
URL url=new URL(urlStr);
conn = (HttpURLConnection)url.openConnection();
conn.setConnectTimeout(5000);
conn.setReadTimeout(30000);
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.6)");
conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);
OutputStream out = new DataOutputStream(conn.getOutputStream());
if (fileitem != null|| file!=null) {
String fileName = null;
if(fileitem != null)
fileName = fileitem.getName();
if(file != null)
fileName = file.getName();
String contentType = "multipart/form-data";//match.getMimeType();
StringBuffer strBuf = new StringBuffer();
strBuf.append("\r\n").append("--").append(BOUNDARY).append("\r\n");
strBuf.append("Content-Disposition: form-data; name=\"media\"; filename=\"" + fileName + "\"\r\n");
strBuf.append("Content-Type:" + contentType + "\r\n\r\n");
DataInputStream in = null;
out.write(strBuf.toString().getBytes());
if(fileitem != null)
in = new DataInputStream(fileitem.getInputStream());
if(file != null)
in = new DataInputStream(new FileInputStream(file));
int bytes = 0;
byte[] bufferOut = new byte[1024];
while ((bytes = in.read(bufferOut)) != -1) {
out.write(bufferOut, 0, bytes);
}
in.close();
}
byte[] endData = ("\r\n--" + BOUNDARY + "--\r\n").getBytes();
out.write(endData);
out.flush();
out.close();
// 读取返回数据
StringBuffer strBuf = new StringBuffer();
BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line = null;
while ((line = reader.readLine()) != null) {
strBuf.append(line).append("\n");
}
result = strBuf.toString();
reader.close();
reader = null;
jsonObject =JSON.parseObject(result);
if(instance instanceof JSONObject) {
return (T) jsonObject;
}
T resultBean = (T) JSONObject.parseObject(jsonObject.toString(), t);
return resultBean;
} catch (ConnectException ce) {
log.error(urlStr+"接口 --server connection timed out:{}",ce);
ce.printStackTrace();
} catch (Exception e) {
log.error(urlStr+"--接口异常--",e);
e.printStackTrace();
} finally {
if (conn != null) {
conn.disconnect();
conn = null;
}
}
return t.newInstance();
}
}