HttpClientUtil

迷南。 2022-05-13 16:26 128阅读 0赞

import java.io.BufferedReader;  
import java.io.IOException;  
import java.io.InputStream;  
import java.io.InputStreamReader;  
import java.io.UnsupportedEncodingException;  
import java.util.ArrayList;  
import java.util.List;

import org.apache.commons.httpclient.HttpClient;  
import org.apache.commons.httpclient.methods.PostMethod;  
import org.apache.commons.httpclient.methods.StringRequestEntity;  
import org.apache.http.HttpEntity;  
import org.apache.http.NameValuePair;  
import org.apache.http.client.entity.UrlEncodedFormEntity;  
import org.apache.http.client.methods.CloseableHttpResponse;  
import org.apache.http.client.methods.HttpPost;  
import org.apache.http.impl.client.CloseableHttpClient;  
import org.apache.http.impl.client.HttpClients;  
import org.apache.http.message.BasicNameValuePair;  
import org.apache.http.util.EntityUtils;  
import org.json.JSONObject;  
import org.slf4j.Logger;  
import org.slf4j.LoggerFactory;

public class HttpClientUtil \{  
    private final static Logger log = LoggerFactory.getLogger(HttpClientUtil.class);

public static CloseableHttpClient getHttpClient() \{  
        return HttpClients.createDefault();  
    \}

public static void closeHttpClient(CloseableHttpClient client) throws IOException \{  
        if (client != null) \{  
            client.close();  
        \}  
    \}  
      
    public static String postString(String url, String json) \{  
        HttpClient httpclient = new HttpClient();  
        PostMethod post = new PostMethod(url);  
        String response = null;  
        try \{  
            post.setRequestEntity(new StringRequestEntity(json, "application/json", "UTF-8"));  
            httpclient.executeMethod(post);  
            InputStream inputStream = post.getResponseBodyAsStream();  
            BufferedReader br = new BufferedReader(new InputStreamReader(inputStream));  
            StringBuffer stringBuffer = new StringBuffer();  
            String str = "";  
            while ((str = br.readLine()) != null) \{  
                stringBuffer.append(str.replace("\\\\", ""));  
            \}  
            response = stringBuffer.toString();  
        \} catch (Exception e) \{  
            e.printStackTrace();  
        \} finally \{  
            post.releaseConnection();  
            httpclient.getHttpConnectionManager().closeIdleConnections(0);  
        \}  
        return response;  
    \}  
      
      
    public static String postXml(String url, String xml) \{  
        HttpClient httpclient = new HttpClient();  
        PostMethod post = new PostMethod(url);  
        String response = null;  
        try \{  
            post.setRequestEntity(new StringRequestEntity(xml, "text/xml", "GBK"));  
            httpclient.executeMethod(post);  
            InputStream inputStream = post.getResponseBodyAsStream();  
            BufferedReader br = new BufferedReader(new InputStreamReader(inputStream, "GBK"));  
            StringBuffer stringBuffer = new StringBuffer();  
            String str = "";  
            while ((str = br.readLine()) != null) \{  
                stringBuffer.append(str.replace("\\\\", ""));  
            \}  
            response = stringBuffer.toString();  
        \} catch (Exception e) \{  
            e.printStackTrace();  
        \} finally \{  
            post.releaseConnection();  
            httpclient.getHttpConnectionManager().closeIdleConnections(0);  
        \}  
        return response;  
    \}

/\*\*  
     \* POST方式发起http请求  
     \*/  
    public void requestByPostMethod() \{  
        CloseableHttpClient httpClient = getHttpClient();  
        try \{  
            HttpPost post = new HttpPost("http://www.baidu.com"); // 这里用上本机的某个工程做测试  
            // 创建参数列表  
            List<NameValuePair> list = new ArrayList<NameValuePair>();  
            list.add(new BasicNameValuePair("j\_username", "admin"));  
            list.add(new BasicNameValuePair("j\_password", "admin"));  
            // url格式编码  
            UrlEncodedFormEntity uefEntity = new UrlEncodedFormEntity(list, "UTF-8");  
            post.setEntity(uefEntity);  
            System.out.println("POST 请求...." + post.getURI());  
            // 执行请求  
            CloseableHttpResponse httpResponse = httpClient.execute(post);  
            try \{  
                HttpEntity entity = httpResponse.getEntity();  
                if (null != entity) \{  
                    System.out.println("-------------------------------------------------------");  
                    System.out.println(EntityUtils.toString(entity, "UTF-8"));  
                    System.out.println("-------------------------------------------------------");  
                \}  
            \} finally \{  
                httpResponse.close();  
            \}

\} catch (UnsupportedEncodingException e) \{  
            e.printStackTrace();  
        \} catch (IOException e) \{  
            e.printStackTrace();  
        \} finally \{  
            try \{  
                closeHttpClient(httpClient);  
            \} catch (Exception e) \{  
                e.printStackTrace();  
            \}  
        \}  
    \}  
    /\*\*  
     \* post请求,参数json  
     \*  
     \* @param url  
     \* @param json  
     \* @return  
     \*/  
    public static String postJson(String url, net.sf.json.JSONObject json) \{

HttpClient httpclient = new HttpClient();  
        PostMethod post = new PostMethod(url);  
        String response = null;  
        InputStream inputStream = null;  
        BufferedReader br = null;  
        try \{  
            post.setRequestEntity(new StringRequestEntity(json.toString(), "application/json", "UTF-8"));  
            httpclient.executeMethod(post);  
            inputStream = post.getResponseBodyAsStream();  
            br = new BufferedReader(new InputStreamReader(inputStream));  
            StringBuffer stringBuffer = new StringBuffer();  
            String str;  
            while ((str = br.readLine()) != null) \{  
                stringBuffer.append(str.replace("\\\\", ""));  
            \}  
            response = stringBuffer.toString();  
        \} catch (Exception e) \{  
            e.printStackTrace();  
            log.info("微信公众号推送异常打印", "");  
        \} finally \{  
            try \{  
                if (inputStream != null) inputStream.close();  
                if (br != null) inputStream.close();  
            \} catch (IOException e) \{  
                e.printStackTrace();  
            \}  
            post.releaseConnection();  
            httpclient.getHttpConnectionManager().closeIdleConnections(0);  
        \}  
        return response;  
      
    \}

/\*\*  
     \* post请求,参数json  
     \*  
     \* @param url  
     \* @param json  
     \* @return  
     \*/

public static String postJson(String url, JSONObject json) \{  
        HttpClient httpclient = new HttpClient();  
        PostMethod post = new PostMethod(url);  
        String response = null;  
        InputStream inputStream = null;  
        BufferedReader br = null;  
        try \{  
            post.setRequestEntity(new StringRequestEntity(json.toString(), "application/json", "UTF-8"));  
            httpclient.executeMethod(post);  
            inputStream = post.getResponseBodyAsStream();  
            br = new BufferedReader(new InputStreamReader(inputStream));  
            StringBuffer stringBuffer = new StringBuffer();  
            String str = "";  
            while ((str = br.readLine()) != null) \{  
                stringBuffer.append(str.replace("\\\\", ""));  
            \}  
            response = stringBuffer.toString();  
            if (inputStream != null) inputStream.close();  
            if (br != null) inputStream.close();  
        \} catch (Exception e) \{  
            e.printStackTrace();  
        \} finally \{  
            post.releaseConnection();  
            httpclient.getHttpConnectionManager().closeIdleConnections(0);  
        \}  
        return response;  
    \}