百度的地图api中Geocoding故障解决案例以及思路，百度禁止了Geocoding的httpget获取方式

 

错误描述

给以企业做的app中内嵌了通过gps地址信息转换为实际的地址的功能，使用了百度地图的Geocoding 功能，从上周三开始，陆续有用户反馈，使用定位出现无法获取地址信息的错误，一开始小范围，还以为是用户自己的问题，没有在意，但是到了周四的时候，就开始大面积的爆发了；

解决方法

查找下是不是百度api发生变更

因为近期android app没有做任何更新，所以怀疑是不是baidu的api发生了修改，但是看了下文档，也没有发生变更，而且按照baidu之前的习惯应该是可以向下兼容的；

看下是不是key过期了

登陆百度map的api管理控制台，看了下key没有过期，并且通过代码也是可以访问的；

更换了key之后，调用后，问题依旧；

检查android代码

1、检查了下调用的代码，发现是使用httpget方式进行获取，就考虑换个post方法看看是不是能够解决问题；

2、替换为httppost方式之后，问题得到解决，可以确认是baidu修改了该api的获取方式，拒绝了get方式活着拒绝了android代码里面httpget方式；

public static String getUrlData(String url)
throws Exception {
int returnCode = 0;
url = checkURL(url);
HttpGet get = new HttpGet(url);
String strResult = “”;
HttpParams httpParams = new BasicHttpParams();
ConnManagerParams.setTimeout(httpParams, 3000);

get.setHeader(“text/html;charset”, “utf-8″);

ConnManagerParams.setTimeout(httpParams, 3000);

HttpConnectionParams.setConnectionTimeout(httpParams, 4000);

HttpConnectionParams.setSoTimeout(httpParams, 8000);
SchemeRegistry schReg = new SchemeRegistry();
schReg.register(new Scheme(“http”, PlainSocketFactory
.getSocketFactory(), 80));

/* ʹ���̰߳�ȫ�����ӹ���������HttpClient */
ClientConnectionManager conMgr = new ThreadSafeClientConnManager(
httpParams, schReg);
HttpClient httpClient = new DefaultHttpClient(conMgr, httpParams);

//HttpClient httpClient =new DefaultHttpClient();
try{
HttpResponse response = httpClient.execute(get);
//HttpResponse response = new DefaultHttpClient().execute(get);
returnCode = response.getStatusLine().getStatusCode();
if(returnCode == 200){
strResult =EntityUtils.toString(response.getEntity(),”UTF-8″);

//String result = EntityUtils.toString(response.getEntity(),”UTF-8″);
KonkaLog.i(response.getAllHeaders().toString());
for(int i=0;i<response.getAllHeaders().length;i++){
KonkaLog.i(response.getAllHeaders()[i].getName(),response.getAllHeaders()[i].getValue());
}
com.easybiz.util.KonkaLog.i(“postUrlData”, strResult );

return strResult;

}else{
com.easybiz.util.KonkaLog.i(“postUrlData”, returnCode + “”);
return “”+returnCode;
}
}catch(Exception e){
return “发生未知错误”;
}
}

 

public static String postUrlData(String url)
throws Exception {
int returnCode = 0;
url = checkURL(url);
HttpPost post = new HttpPost(url);
String strResult = “”;
HttpClient httpClient = new DefaultHttpClient();

HttpResponse response = httpClient.execute(post);
returnCode = response.getStatusLine().getStatusCode();
if(returnCode == 200){
strResult =EntityUtils.toString(response.getEntity());
com.easybiz.util.KonkaLog.i(“postUrlData”, strResult );
ErrorCode = 200;
return strResult;

}else{
com.easybiz.util.KonkaLog.i(“postUrlData”, returnCode + “”);
ErrorDescript = returnCode+”";
return “”+returnCode;
}

}

 

/**
* httppost的公用类
* @param url 地址
* @param params 参数
* @return 返回string类型
* @throws Exception
*/
public static String postUrlData(String url, ArrayList<NameValuePair> params)
throws Exception {
int returnCode = 0;
url = checkURL(url);
HttpPost post = new HttpPost(url);

String strResult = “”;

com.easybiz.util.KonkaLog.i(“postUrlData”, params.toString() );
post.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));
HttpParams httpParams = new BasicHttpParams();

ConnManagerParams.setTimeout(httpParams, 3000);

ConnManagerParams.setTimeout(httpParams, 3000);

HttpConnectionParams.setConnectionTimeout(httpParams, 120000);

HttpConnectionParams.setSoTimeout(httpParams, 120000);
SchemeRegistry schReg = new SchemeRegistry();
schReg.register(new Scheme(“http”, PlainSocketFactory.getSocketFactory(), 80));
ClientConnectionManager conMgr = new ThreadSafeClientConnManager(
httpParams, schReg);
HttpClient httpClient = new DefaultHttpClient(conMgr, httpParams);

//HttpClient httpClient =new DefaultHttpClient();
try{

HttpResponse response = httpClient.execute(post);

returnCode = response.getStatusLine().getStatusCode();
strResult =EntityUtils.toString(response.getEntity());
if(returnCode == 200){

com.easybiz.util.KonkaLog.i(“postUrlData”, strResult );
return strResult;

}else{
com.easybiz.util.KonkaLog.i(“postUrlData”, returnCode + “”);
ErrorDescript = “登录失败”;
return “”+returnCode;
}
}catch(Exception e){
com.easybiz.util.KonkaLog.i(“postUrlData”, strResult );
e.printStackTrace();
ErrorDescript = “网络连接失败，请检查WIFI或数据连接是否正常”;
return “网络连接失败，请检查WIFI或数据连接是否正常”;
}
}

 

 

method_url = method_url +”?output=json” + “&ak=Dlwp0PmEQQKyFBBntHGSLljM” + “&location=” + loc.getLatitude()+”,”+loc.getLongitude();
strresult = HttpComm.getUrlData(method_url));//公用方法调用见上面

将此处修改为

strresult = HttpComm.postUrlData(method_url));//公用方法调用见上面

 

 

3、但是修改为post方法后，发现会出现10次调用，有3次会出现失败，再次检查代码，发现还是实用得得httppost的方式不对，换成标准方式，问题得到解决；

method_url = method_url +”?output=json” + “&ak=Dlwp0PmEQQKyFBBntHGSLljM” + “&location=” + loc.getLatitude()+”,”+loc.getLongitude();
strresult = HttpComm.postUrlData(method_url));//公用方法调用见上面

将此处修改为

ArrayList<NameValuePair> params = new ArrayList<NameValuePair>();

BasicNameValuePair baseValuePair = new BasicNameValuePair(“output”,”json”);

params.add(baseValuePair);

baseValuePair = new BasicNameValuePair(“location”,loc.getLatitude()+”,”+loc.getLongitude());

params.add(baseValuePair);
baseValuePair = new BasicNameValuePair(“ak”,”Dlwp0PmEQQKyFBBntHGSLljM”);
params.add(baseValuePair);

strresult = HttpComm.postUrlData(method_url,params );

 

 

 

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