jfinal 调用sdk接口（get和post）

原创已于 2025-02-06 13:18:56 修改 · 2k 阅读

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#经验分享

于 2019-05-29 16:26:20 首次发布

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本文分享了调用高德地图接口的经验。介绍了get请求，只需将参数拼接在url后。对于post请求，框架自带方法有局限，以删除轨迹接口为例，测试发现参数以x-www-form-urlencoded方式传输可通过，但设置请求头和类型后仍有问题，最后找到能解决问题的方式。

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首先是调用get请求，以查询高德地图轨迹数据为例：

private static final String SEARCH_URL= "https://tsapi.amap.com/v1/track/terminal/trsearch";		// 轨迹查询url
private static final String DELETE_URL = "https://tsapi.amap.com/v1/track/trace/delete";			// 删除轨迹url
private static final String SERVICE_KEY = "xxx";													// 请求服务权限标识
private static final String SERVICE_SID = "xxx";													// 服务的唯一编号

String tid = getPara("tid");
String trid = getPara("trid");
StringBuffer url = new StringBuffer();
url.append(SEARCH_URL)
   .append("?key=").append(SERVICE_KEY)
   .append("&sid=").append(SERVICE_SID)
   .append("&tid=").append(tid)
   .append("&trid=").append(trid);
HttpKit.get(url.toString());

调用get请求时只需要把参数拼接在url后面即可。
然后是post请求，对于post请求框架自带的HttpKit.post(url, data)能应对大部分问题，但仍有一部分情况是不行的，以高德地图删除轨迹为例

Map<String, String> map = new HashMap<String, String>();
map.put("key",SERVICE_KEY);
map.put("sid", SERVICE_SID);
map.put("tid", tid);
map.put("trid", trid);
HttpKit.post(DELETE_URL , JSON.toJSONString(map));

测试结果会提示参数出错，但以相同的参数调用查询轨迹是能够查到数据的，也就是说这种方式是存在问题的，用postman对删除轨迹的接口进行测试，发现参数以x-www-form-urlencoded方式传输，也是能测试通过的，再以上述方式进行调试，能看到有conn.setRequestMethod(method);和conn.setRequestProperty(“Content-Type”,“application/x-www-form-urlencoded”);的设置，也就是设置了请求头和请求类型，但是在查看HttpURLConnection对象时却发现这些值没有设置进去，请求还是get请求（默认为get），request还是为空，挣扎了一番之后还是放弃了，另寻出路，于是搜到如下方式

import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

import org.apache.http.impl.client.DefaultHttpClient;

@SuppressWarnings("deprecation")
public class SSLClient extends DefaultHttpClient {
	public SSLClient() throws Exception{  
	    SSLContext ctx = SSLContext.getInstance("TLS");  
	    X509TrustManager tm = new X509TrustManager() {  
	        @Override 
	        public void checkClientTrusted(X509Certificate[] chain,  
	            String authType) throws CertificateException {  
	        }  
	        @Override 
	        public void checkServerTrusted(X509Certificate[] chain,  
	            String authType) throws CertificateException {  
	        }  
	        @Override 
	        public X509Certificate[] getAcceptedIssuers() {  
	          return null;  
	        }  
	    };  
	    ctx.init(null, new TrustManager[]{tm}, null);  
	}
}

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

public class HttpClientUtil {
	@SuppressWarnings({ "unchecked", "rawtypes" })
	public String doPost(String url,Map<String,String> map,String charset){  
	    HttpClient httpClient = null;  
	    HttpPost httpPost = null;  
	    String result = null;  
	    try{  
	      httpClient = (HttpClient) new SSLClient();  
	      httpPost = new HttpPost(url);  
	      //设置参数  
	      List<NameValuePair> list = new ArrayList<NameValuePair>();  
	      Iterator iterator = map.entrySet().iterator();  
	      while(iterator.hasNext()){  
	        Entry<String,String> elem = (Entry<String, String>) iterator.next();  
	        list.add(new BasicNameValuePair(elem.getKey(),elem.getValue()));  
	      }  
	      if(list.size() > 0){  
	        UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list,charset);  
	        httpPost.setEntity(entity);  
	      }  
	      HttpResponse response = httpClient.execute(httpPost);  
	      if(response != null){  
	        HttpEntity resEntity = response.getEntity();  
	        if(resEntity != null){  
	          result = EntityUtils.toString(resEntity,charset);  
	        }  
	      }  
	    }catch(Exception ex){  
	      ex.printStackTrace();  
	    }  
	    return result;  
	}  
}

虽然这些看不太懂，但是能解决当前问题，只要直接调用就好了，还是很方便的

Map<String, String> map = new HashMap<String, String>();
map.put("key", SERVICE_KEY);
map.put("sid", SERVICE_SID);
map.put("tid", tid);
map.put("trid", trid);
HttpClientUtil util = new HttpClientUtil();
util.doPost(DELETE_URL, map, "utf-8");