java 通过第三方接口生成短链接

浅浅的花香味﹌ 2022-03-18 18:28 568阅读 0赞

## java 通过第三方接口生成短链接 ##

本文介绍通过http://suo.im/api.php第三方接口生成短链接。

package com.my.controller.api;
    
    import com.my.utils.HTTPUtils;
    import com.my.utils.StringUtils;
    import com.my.web.Message;
    import net.sf.json.JSONObject;
    import org.apache.http.NameValuePair;
    import org.apache.http.message.BasicNameValuePair;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    import java.util.ArrayList;
    import java.util.List;
    import java.util.Map;
    
    /** * 生成短连接 */
    @Controller
    @RequestMapping("/api/shortUrl")
    public class ShortUrlController { 
    
       @RequestMapping(method = RequestMethod.GET)
       @ResponseBody
       public Message getShortUrl(String url){ 
       	if(null == url){ 
       		return Message.error("参数为空");
       	}
       	List<NameValuePair> pairs = new ArrayList<>();
       	//设置接口返回格式
       	pairs.add(new BasicNameValuePair("format", "json"));
       	pairs.add(new BasicNameValuePair("url", url));
       	Map<String, String> rst;
       	try { 
       		rst = HTTPUtils.getGetResp("http://suo.im/api.php", pairs, "UTF-8");
       	} catch (Exception e) { 
       		return Message.error("请求错误");
       	}
       	JSONObject json = JSONObject.fromObject(rst.get("responseBody"));
       	if(StringUtils.isEmpty(json.getString("err"))){ 
       		String shortUrl = json.getString("url");
       		if(StringUtils.isEmpty(shortUrl)){ 
       			return Message.error("请求错误");
       		}else{ 
       			return Message.success(shortUrl);
       		}
       	}else{ 
       		return Message.error(json.getString("err"));
       	}
       }
    }

相关HTTPUtils类

package com.my.utils;
    
    import java.io.ByteArrayOutputStream;
    import java.io.PrintStream;
    import java.net.URI;
    import java.nio.charset.Charset;
    import java.util.*;
    
    import org.apache.commons.io.IOUtils;
    import org.apache.http.Header;
    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.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;
    
    /** * Utils - HTTP GET */
    public final class HTTPUtils { 
    
       /** UTF-8字符集编码 */
       public static final String UTF_8 = "UTF-8";
       private HTTPUtils() { 
    
       }
    
       /** * 获取响应信息 * * @param url 请求地址 * @param httpParameters 请求参数 * @return 响应数据 */
       public static Map<String, String> getGetResp(String url, List<NameValuePair> httpParameters) throws Exception { 
    
           Map<String, String> map = new HashMap<String, String>();
    
           CloseableHttpClient httpClient = null;
           ByteArrayOutputStream exceptionOutputStream = null;
           CloseableHttpResponse httpResponse = null;
           PrintStream exceptionPrintStream = null;
    
           try { 
               HttpGet httpGet = new HttpGet(url);
               httpClient = HttpClients.createDefault();
    
               String sendstr = "";
               if (httpParameters != null && !httpParameters.isEmpty()) { 
                   sendstr = EntityUtils.toString(new UrlEncodedFormEntity(httpParameters, UTF_8));
                   httpGet.setURI(new URI(httpGet.getURI().toString() + "?" + sendstr));
               } else { 
                   httpGet.setURI(new URI(httpGet.getURI().toString()));
               }
    
               map.put("requestUrl", url);
               map.put("requestMethod", httpGet.getMethod());
               map.put("requestTime", DateUtils.formatTime(new Date()));
               map.put("requestHeaders", getHeaders(httpGet.getAllHeaders()));
               map.put("requestBody", getBody(httpParameters).toString());
    
               httpResponse = httpClient.execute(httpGet);
    
               int responseStatus = httpResponse.getStatusLine().getStatusCode();
               String responseBody = EntityUtils.toString(httpResponse.getEntity(), "GB2312"/*UTF_8*/);
    
               map.put("responseStatus", String.valueOf(responseStatus));
               map.put("responseBody", responseBody);
               map.put("responseTime", DateUtils.formatTime(new Date()));
               map.put("responseHeaders", getHeaders(httpResponse.getAllHeaders()));
    
           } catch (Exception e) { 
               e.printStackTrace();
               // 获取异常
               exceptionPrintStream = new PrintStream(exceptionOutputStream);
               exceptionOutputStream = new ByteArrayOutputStream();
               map.put("exception", new String(exceptionOutputStream.toByteArray()));
               e.printStackTrace(exceptionPrintStream);
           } finally { 
               IOUtils.closeQuietly(httpResponse);
               IOUtils.closeQuietly(httpClient);
               IOUtils.closeQuietly(exceptionPrintStream);
               IOUtils.closeQuietly(exceptionOutputStream);
           }
    
           return map;
       }
    
       /** * 获取响应信息 * * @param url 请求地址 * @param httpParameters 请求参数 * @return 响应数据 */
       public static Map<String, String> getGetResp(String url, List<NameValuePair> httpParameters,String charset) throws Exception { 
    
           Map<String, String> map = new HashMap<String, String>();
    
           CloseableHttpClient httpClient = null;
           ByteArrayOutputStream exceptionOutputStream = null;
           CloseableHttpResponse httpResponse = null;
           PrintStream exceptionPrintStream = null;
    
           try { 
               HttpGet httpGet = new HttpGet(url);
               httpClient = HttpClients.createDefault();
    
               String sendstr = "";
               if (httpParameters != null && !httpParameters.isEmpty()) { 
                   sendstr = EntityUtils.toString(new UrlEncodedFormEntity(httpParameters, UTF_8));
                   httpGet.setURI(new URI(httpGet.getURI().toString() + "?" + sendstr));
               } else { 
                   httpGet.setURI(new URI(httpGet.getURI().toString()));
               }
    
               map.put("requestUrl", url);
               map.put("requestMethod", httpGet.getMethod());
               map.put("requestTime", DateUtils.formatTime(new Date()));
               map.put("requestHeaders", getHeaders(httpGet.getAllHeaders()));
               map.put("requestBody", getBody(httpParameters).toString());
    
               httpResponse = httpClient.execute(httpGet);
    
               int responseStatus = httpResponse.getStatusLine().getStatusCode();
               String responseBody = EntityUtils.toString(httpResponse.getEntity(), charset);
    
               map.put("responseStatus", String.valueOf(responseStatus));
               map.put("responseBody", responseBody);
               map.put("responseTime", DateUtils.formatTime(new Date()));
               map.put("responseHeaders", getHeaders(httpResponse.getAllHeaders()));
    
           } catch (Exception e) { 
               e.printStackTrace();
               // 获取异常
               exceptionPrintStream = new PrintStream(exceptionOutputStream);
               exceptionOutputStream = new ByteArrayOutputStream();
               map.put("exception", new String(exceptionOutputStream.toByteArray()));
               e.printStackTrace(exceptionPrintStream);
           } finally { 
               IOUtils.closeQuietly(httpResponse);
               IOUtils.closeQuietly(httpClient);
               IOUtils.closeQuietly(exceptionPrintStream);
               IOUtils.closeQuietly(exceptionOutputStream);
           }
    
           return map;
       }
    
       /** * 获取响应信息 * * @param url 请求地址 * @param json 请求参数 * @return 响应数据 */
       public static Map<String, String> getPostResp(String url, String json) throws Exception { 
    
           Map<String, String> map = new HashMap<String, String>();
    
    
           // String response = null;
    
           CloseableHttpClient httpClient = null;
           CloseableHttpResponse httpResponse = null;
           ByteArrayOutputStream exceptionOutputStream = null;
           PrintStream exceptionPrintStream = null;
    
           try { 
               httpClient = HttpClients.createDefault();
               HttpPost httpPost = new HttpPost(url);
               httpPost.addHeader("Content-Type", "application/json");
               map.put("requestParam", json);
               StringEntity httpEntity = new StringEntity(json, Charset.forName("utf-8"));
               httpPost.setEntity(httpEntity);
    
               httpResponse = httpClient.execute(httpPost);
    
               int statusCode = httpResponse.getStatusLine().getStatusCode();
    
               String responseBody = EntityUtils.toString(httpResponse.getEntity(), UTF_8);
    
               map.put("statusCode", String.valueOf(statusCode));
               map.put("info", responseBody);
    
           } catch (Exception e) { 
               e.printStackTrace();
               // 获取异常
               exceptionPrintStream = new PrintStream(exceptionOutputStream);
               exceptionOutputStream = new ByteArrayOutputStream();
               map.put("info", new String(exceptionOutputStream.toByteArray()));
               e.printStackTrace(exceptionPrintStream);
           } finally { 
               IOUtils.closeQuietly(httpResponse);
               IOUtils.closeQuietly(httpClient);
               IOUtils.closeQuietly(exceptionPrintStream);
               IOUtils.closeQuietly(exceptionOutputStream);
           }
    
           return map;
       }
    
       /** * 获取响应信息 * * @param url 请求地址 * @param httpParameters 请求参数 * @return 响应数据 */
       public static Map<String, String> getPostByFormResp(String url, List<NameValuePair> httpParameters) throws Exception { 
    
           Map<String, String> map = new HashMap<String, String>();
    
           CloseableHttpClient httpClient = null;
           CloseableHttpResponse httpResponse = null;
           ByteArrayOutputStream exceptionOutputStream = null;
           PrintStream exceptionPrintStream = null;
    
           try { 
               httpClient = HttpClients.createDefault();
               HttpPost httpPost = new HttpPost(url);
               httpPost.addHeader("Content-Type", "application/x-www-form-urlencoded");
               httpPost.setEntity(new UrlEncodedFormEntity(httpParameters,Charset.forName("utf-8")));
    
               map.put("requestUrl", url);
               map.put("requestMethod", httpPost.getMethod());
               map.put("requestTime", DateUtils.formatTime(new Date()));
               map.put("requestHeaders", getHeaders(httpPost.getAllHeaders()));
               map.put("requestBody", getBody(httpParameters).toString());
    
               httpResponse = httpClient.execute(httpPost);
    
               int responseStatus = httpResponse.getStatusLine().getStatusCode();
               String responseBody = EntityUtils.toString(httpResponse.getEntity(), UTF_8);
    
               map.put("responseStatus", String.valueOf(responseStatus));
               map.put("responseBody", responseBody);
               map.put("responseTime", DateUtils.formatTime(new Date()));
               map.put("responseHeaders", getHeaders(httpResponse.getAllHeaders()));
    
           } catch (Exception e) { 
               // 获取异常
               exceptionOutputStream = new ByteArrayOutputStream();
               exceptionPrintStream = new PrintStream(exceptionOutputStream);
               map.put("exception", new String(exceptionOutputStream.toByteArray()));
               e.printStackTrace(exceptionPrintStream);
           } finally { 
               IOUtils.closeQuietly(httpResponse);
               IOUtils.closeQuietly(httpClient);
               IOUtils.closeQuietly(exceptionPrintStream);
               IOUtils.closeQuietly(exceptionOutputStream);
           }
    
           return map;
       }
    
       /** * 获取通信头部信息 * * @param headers 数组 * @return 响应数据 */
       private  static  String getHeaders(Header... headers){ 
           StringBuffer headerstr = new StringBuffer();
           if (headers != null && headers.length >0){ 
               for (Header header: headers){ 
                   headerstr.append(header.getName());
                   headerstr.append("→");
                   headerstr.append(header.getValue());
                   headerstr.append("|");
               }
           }
           return headerstr.toString();
       }
    
       /** * 获取通信参数信息 * * @param httpParameters 参数列表 * @return 响应数据 */
       private  static  String getBody(List<NameValuePair> httpParameters){ 
           if (httpParameters == null || httpParameters.isEmpty()){ 
               return "";
           }
           StringBuffer requestBody=new StringBuffer();
           Iterator it= httpParameters.iterator();
           while(it.hasNext()) { 
               NameValuePair parameter = (NameValuePair)it.next();
               String encodedName = parameter.getName();
               String encodedValue = parameter.getValue();
               if(requestBody.length() > 0) { 
                   requestBody.append("&");
               }
               requestBody.append(encodedName);
               if(encodedValue != null) { 
                   requestBody.append("=");
                   requestBody.append(encodedValue);
               }
           }
           return  requestBody.toString();
       }
    
    }