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Java高德地图Api的使用
使用高德经纬度获取地址信息
一些准备用到的常量
/**
* 高德地图请求秘钥
*/
private static final String KEY = "密钥,可以去高德地图免费申请";
/**
* 返回值类型
*/
private static final String OUTPUT = "JSON";
/**
* 根据地名获取高德经纬度Api
*/
private static final String GET_LNG_LAT_URL = "http://restapi.amap.com/v3/geocode/geo";
/**
* 根据高德经纬度获取地名Api
*/
private static final String GET_ADDRESS_URL = http://restapi.amap.com/v3/geocode/regeo;
HttpClientUtils
import com.google.common.base.Function;
import com.google.common.collect.FluentIterable;
import com.google.common.collect.Lists;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.NoHttpResponseException;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.*;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpRequestRetryHandler;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.client.protocol.HttpClientContext;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.config.ConnectionConfig;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.config.SocketConfig;
import org.apache.http.conn.ConnectTimeoutException;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HttpContext;
import org.apache.http.ssl.SSLContexts;
import org.apache.http.util.EntityUtils;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLHandshakeException;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.net.UnknownHostException;
import java.nio.charset.CodingErrorAction;
import java.util.List;
import java.util.Map;
/**
* HttpClient工具类
*/
public class HttpClientUtils {
/**
* 连接池最大连接数
*/
private static final int MAX_TOTAL_CONNECTIONS = 4000;
/**
* 设置每个路由上的默认连接个数
*/
private static final int DEFAULT_MAX_PER_ROUTE = 200;
/**
* 请求的请求超时时间 单位：毫秒
*/
private static final int REQUEST_CONNECTION_TIMEOUT = 8 * 1000;
/**
* 请求的等待数据超时时间 单位：毫秒
*/
private static final int REQUEST_SOCKET_TIMEOUT = 8 * 1000;
/**
* 请求的连接超时时间 单位：毫秒
*/
private static final int REQUEST_CONNECTION_REQUEST_TIMEOUT = 5 * 1000;
/**
* 连接闲置多久后需要重新检测 单位：毫秒
*/
private static final int VALIDATE_AFTER_IN_ACTIVITY = 2 * 1000;
/**
* 关闭Socket时，要么发送完所有数据，要么等待多少秒后，就关闭连接，此时socket.close()是阻塞的 单位秒
*/
private static final int SOCKET_CONFIG_SO_LINGER = 60;
/**
* 接收数据的等待超时时间,即读超时时间，单位ms
*/
private static final int SOCKET_CONFIG_SO_TIMEOUT = 5 * 1000;
/**
* 重试次数
*/
private static int RETRY_COUNT = 5;
/**
* 声明为 static volatile,会迫使线程每次读取时作为一个全局变量读取
*/
private static volatile CloseableHttpClient httpClient = null;
/**
* @param uri
* @return String
* @description get请求方式
* @author: long.he01
*/
public static String doGet(String uri) {
String responseBody;
HttpGet httpGet = new HttpGet(uri);
try {
httpGet.setConfig(getRequestConfig());
responseBody = executeRequest(httpGet);
} catch (IOException e) {
throw new RuntimeException("httpclient doGet方法异常 ", e);
} finally {
httpGet.releaseConnection();
}
return responseBody;
}
/**
* @param uri
* @param params
* @return string
* @description 带map参数get请求, 此方法会将map参数拼接到连接地址上。
*/
public static String doGet(String uri, Map<String, String> params) {
return doGet(getGetUrlFromParams(uri, params));
}
/**
* @param uri
* @param params
* @return String
* @description 根据map参数拼接完整的url地址
*/
private static String getGetUrlFromParams(String uri, Map<String, String> params) {
List<BasicNameValuePair> resultList = FluentIterable.from(params.entrySet()).transform(
new Function<Map.Entry<String, String>, BasicNameValuePair>() {
@Override
public BasicNameValuePair apply(Map.Entry<String, String> innerEntry) {
return new BasicNameValuePair(innerEntry.getKey(), innerEntry.getValue());
}
}).toList();
String paramSectionOfUrl = URLEncodedUtils.format(resultList, Consts.UTF_8);
StringBuffer resultUrl = new StringBuffer(uri);
if (StringUtils.isEmpty(uri)) {
return uri;
} else {
if (!StringUtils.isEmpty(paramSectionOfUrl)) {
if (uri.endsWith("?")) {
resultUrl.append(paramSectionOfUrl);
} else {
resultUrl.append("?").append(paramSectionOfUrl);
}
}
return resultUrl.toString();
}
}
/**
* @param uri
* @param params
* @return String
* @description 带map参数的post请求方法
*/
public static String doPost(String uri, Map<String, String> params) {
String responseBody;
HttpPost httpPost = new HttpPost(uri);
try {
List<NameValuePair> nvps = Lists.newArrayList();
for (Map.Entry<String, String> entry : params.entrySet()) {
String key = entry.getKey();
String value = entry.getValue();
nvps.add(new BasicNameValuePair(key, value));
}
httpPost.setEntity(new UrlEncodedFormEntity(nvps, Consts.UTF_8));
httpPost.setConfig(getRequestConfig());
responseBody = executeRequest(httpPost);
} catch (Exception e) {
throw new RuntimeException("httpclient doPost方法异常 ", e);
} finally {
httpPost.releaseConnection();
}
return responseBody;
}
/**
* @param uri
* @param param
* @param contentType 根据具体请求情况指定,比如json可以是 ContentType.APPLICATION_JSON
* @return String
* @description 带单string参数执行post方法
*/
public static String doPost(String uri, String param, ContentType contentType) {
String responseBody;
HttpPost httpPost = new HttpPost(uri);
try {
StringEntity reqEntity = new StringEntity(param, contentType);
httpPost.setEntity(reqEntity);
httpPost.setConfig(getRequestConfig());
responseBody = executeRequest(httpPost);
} catch (IOException e) {
throw new RuntimeException("httpclient doPost方法异常 ", e);
} finally {
httpPost.releaseConnection();
}
return responseBody;
}
/**
* @return RequestConfig
* @description: 获得请求配置信息
*/
private static RequestConfig getRequestConfig() {
RequestConfig defaultRequestConfig = RequestConfig.custom()
//.setCookieSpec(CookieSpecs.DEFAULT)
.setExpectContinueEnabled(true)
//.setTargetPreferredAuthSchemes(Arrays.asList(AuthSchemes.NTLM, AuthSchemes.DIGEST))
//.setProxyPreferredAuthSchemes(Arrays.asList(AuthSchemes.BASIC))
.build();
return RequestConfig.copy(defaultRequestConfig)
.setSocketTimeout(REQUEST_CONNECTION_TIMEOUT)
.setConnectTimeout(REQUEST_SOCKET_TIMEOUT)
.setConnectionRequestTimeout(REQUEST_CONNECTION_REQUEST_TIMEOUT)
.build();
}
/**
* @param method
* @return String
* @throws IOException
* @description 通用执行请求方法
*/
private static String executeRequest(HttpUriRequest method) throws IOException {
ResponseHandler<String> responseHandler = new ResponseHandler<String>() {
@Override
public String handleResponse(final HttpResponse response) throws IOException {
int status = response.getStatusLine().getStatusCode();
String result;
if (status >= HttpStatus.SC_OK && status < HttpStatus.SC_MULTIPLE_CHOICES) {
HttpEntity entity = response.getEntity();
result = entity != null ? EntityUtils.toString(entity) : null;
EntityUtils.consume(entity);
return result;
} else {
throw new ClientProtocolException("Unexpected response status: " + status);
}
}
};
String result = getHttpClientInstance().execute(method, responseHandler);
return result;
}
/**
* @return CloseableHttpClient
* @description 单例获取httpclient实例
*/
private static CloseableHttpClient getHttpClientInstance() {
if (httpClient == null) {
synchronized (CloseableHttpClient.class) {
if (httpClient == null) {
httpClient = HttpClients.custom().setConnectionManager(initConfig()).setRetryHandler(getRetryHandler()).build();
}
}
}
return httpClient;
}
/**
* @return HttpRequestRetryHandler
* @description :获取重试handler
*/
private static HttpRequestRetryHandler getRetryHandler() {
// 请求重试处理
return new HttpRequestRetryHandler() {
@Override
public boolean retryRequest(IOException exception,
int executionCount, HttpContext context) {
if (executionCount >= RETRY_COUNT) {
// 假设已经重试了5次，就放弃
return false;
}
if (exception instanceof NoHttpResponseException) {
// 假设server丢掉了连接。那么就重试
return true;
}
if (exception instanceof SSLHandshakeException) {
// 不要重试SSL握手异常
return false;
}
if (exception instanceof InterruptedIOException) {
// 超时
return false;
}
if (exception instanceof UnknownHostException) {
// 目标server不可达
return false;
}
if (exception instanceof ConnectTimeoutException) {
// 连接被拒绝
return false;
}
if (exception instanceof SSLException) {
// SSL握手异常
return false;
}
HttpRequest request = HttpClientContext.adapt(context).getRequest();
// 假设请求是幂等的，就再次尝试
return !(request instanceof HttpEntityEnclosingRequest);
}
};
}
/**
* @return PoolingHttpClientConnectionManager
* @description 初始化连接池等配置信息
*/
private static PoolingHttpClientConnectionManager initConfig() {
Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
.register("http", PlainConnectionSocketFactory.INSTANCE)
.register("https", new SSLConnectionSocketFactory(SSLContexts.createSystemDefault()))
.build();
PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager(socketFactoryRegistry);
/**
* 以下参数设置含义分别为:
* 1 是否立即发送数据，设置为true会关闭Socket缓冲，默认为false
* 2 是否可以在一个进程关闭Socket后，即使它还没有释放端口，其它进程还可以立即重用端口
* 3 接收数据的等待超时时间，单位ms
* 4 关闭Socket时，要么发送完所有数据，要么等待多少秒后，就关闭连接，此时socket.close()是阻塞的
* 5 开启监视TCP连接是否有效
* 其中setTcpNoDelay(true)设置是否启用Nagle算法，设置true后禁用Nagle算法，默认为false（即默认启用Nagle算法）。
* Nagle算法试图通过减少分片的数量来节省带宽。当应用程序希望降低网络延迟并提高性能时，
* 它们可以关闭Nagle算法，这样数据将会更早地发 送，但是增加了网络消耗。 单位为：毫秒
*/
SocketConfig socketConfig = SocketConfig.custom()
.setTcpNoDelay(true)
.setSoReuseAddress(true)
.setSoTimeout(SOCKET_CONFIG_SO_TIMEOUT)
//.setSoLinger(SOCKET_CONFIG_SO_LINGER)
//.setSoKeepAlive(true)
.build();
connManager.setDefaultSocketConfig(socketConfig);
connManager.setValidateAfterInactivity(VALIDATE_AFTER_IN_ACTIVITY);
ConnectionConfig connectionConfig = ConnectionConfig.custom()
.setMalformedInputAction(CodingErrorAction.IGNORE)
.setUnmappableInputAction(CodingErrorAction.IGNORE)
.setCharset(Consts.UTF_8)
.build();
connManager.setDefaultConnectionConfig(connectionConfig);
connManager.setDefaultMaxPerRoute(DEFAULT_MAX_PER_ROUTE);
connManager.setMaxTotal(MAX_TOTAL_CONNECTIONS);
return connManager;
}
}GaoDeMapUtils
import java.io.IOException;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
public class GaoDeMapUtils {
/**
* 高德地图请求秘钥
*/
private static final String KEY = "密钥,可以去高德地图免费申请";
/**
* 返回值类型
*/
private static final String OUTPUT = "JSON";
/**
* 根据地名获取高德经纬度
*/
private static final String GET_LNG_LAT_URL = "http://restapi.amap.com/v3/geocode/geo";
/**
* 根据高德经纬度获取地名
*/
private static final String GET_ADDRESS_URL = "http://restapi.amap.com/v3/geocode/regeo";
/**
* 根据高德经纬度获取地址信息
*
* @param gdLon 高德地图经度
* @param gdLat 高德地图纬度
* @return
*/
public static String getAddressByLonLat(double gdLon, double gdLat) {
String location = gdLon + "," + gdLat;
Map<String, String> params = new HashMap<>();
params.put("location", location);
// Map<String, String> result = new HashMap<>();
try {
// 拼装url
String url = jointUrl(params, OUTPUT, KEY, GET_ADDRESS_URL);
// 调用高德SDK
return HttpClientUtils.doPost(url, params);
// 解析Json字符串,获取城市名称
// JSONObject jsonObject = JSON.parseObject(jsonResult);
// String regeocode = jsonObject.getString("regeocode");
// JSONObject regeocodeObj = JSON.parseObject(regeocode);
// String address = regeocodeObj.getString("formatted_address");
// 组装结果
// result.put(location, address);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* 根据地址信息获取高德经纬度
*
* @param address 地址信息
* @return
*/
public static String getLonLarByAddress(String address) {
Map<String, String> params = new HashMap<>();
params.put("address", address);
// Map<String, String> result = new HashMap<>();
try {
// 拼装url
String url = jointUrl(params, OUTPUT, KEY, GET_LNG_LAT_URL);
// 调用高德地图SDK
return HttpClientUtils.doPost(url, params);
// 解析JSON字符串,取到高德经纬度
// JSONObject jsonObject = JSON.parseObject(jsonResult);
// JSONArray geocodes = jsonObject.getJSONArray("geocodes");
// String geocode = JSON.toJSONString(geocodes.get(0));
// JSONObject geocodeObj = JSON.parseObject(geocode);
// String lonAndLat = geocodeObj.getString("location");
// 组装结果
// result.put(address, lonAndLat);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* 拼接请求字符串
*
* @param params
* @param output
* @param key
* @param url
* @return
* @throws IOException
*/
private static String jointUrl(Map<String, String> params, String output, String key, String url) throws IOException {
StringBuilder baseUrl = new StringBuilder();
baseUrl.append(url);
int index = 0;
Set<Map.Entry<String, String>> entrys = params.entrySet();
for (Map.Entry<String, String> param : entrys) {
// 判断是否是第一个参数
if (index == 0) {
baseUrl.append("?");
} else {
baseUrl.append("&");
}
baseUrl.append(param.getKey()).append("=").append(URLEncoder.encode(param.getValue(), "utf-8"));
index++;
}
baseUrl.append("&output=").append(output).append("&key=").append(key);
return baseUrl.toString();
}
}返回结果
// 这是根据高德经纬度获取的返回报文
{"status":"1","info":"OK","infocode":"10000","regeocode":{"formatted_address":"北京市东城区东华门街道天安门","addressComponent":{"country":"中国","province":"北京市","city":[],"citycode":"010","district":"东城区","adcode":"110101","township":"东华门街道","towncode":"110101001000","neighborhood":{"name":[],"type":[]},"building":{"name":"天安门","type":"风景名胜;风景名胜相关;旅游景点"},"streetNumber":{"street":"广场东侧路","number":"44号","location":"116.39795,39.9097239","direction":"北","distance":"113.709"},"businessAreas":[{"location":"116.3998109423077,39.90717459615385","name":"天安门","id":"110101"},{"location":"116.39981058278138,39.92383706953642","name":"景山","id":"110101"},{"location":"116.4118112683418,39.91461494422115","name":"王府井","id":"110101"}]}}}
// 这是根据地址名称获取的返回报文
{"status":"1","info":"OK","infocode":"10000","count":"1","geocodes":[{"formatted_address":"北京市东城区天安门","province":"北京市","citycode":"010","city":"北京市","district":"东城区","township":[],"neighborhood":{"name":[],"type":[]},"building":{"name":[],"type":[]},"adcode":"110101","street":[],"number":[],"location":"116.397573,39.908743","level":"兴趣点"}]}
Java调用高德Api获取经纬度
1.第一步使用高德api需要先注册高德账号申请Key
高德开放平台:https://lbs.amap.com/
2.第二步详细阅读高德api开发指南
指南地址:https://lbs.amap.com/api/webservice/guide/api/georegeo/#geo
3.编写业务代码
首先这里需要判断成功把值返回失败默认赋值
其次笔者是使用的map形式返回值大家也可以尝试其他方法返回得到的值
对于最终得到的值因为是六位小数这里是用的双精度型存储然后转换为数据库存储值的类型按自己数据库的类型为准
4.编写用作调用经纬度的类
将调用得到的json格式的数据进行处理得到所需要的经纬度的值封装入定义好的map参数中
关于“Java环境中高德地图Api怎么用”这篇文章就分享到这里了，希望以上内容可以对大家有一定的帮助，使各位可以学到更多知识，如果觉得文章不错，请把它分享出去让更多的人看到。