上一篇我们讲到如何找到我们需要调用的API,现在看一下代码实例。
controller层 注意参数
/**
* 参数格式 纬度，经度
* @param origin 33.961656,116.804537
* @param destination 30.539222,117.121283
*/
@RequestMapping(value = "/getDirection", method = RequestMethod.GET)
@ApiOperation(value = "两个地点距离和驾车耗时")
public Map<Object,Object> getDirection(@ApiParam(name = "origin", value = "起源")
@RequestParam(value = "origin", required = false) String origin,
@ApiParam(name = "destination", value = "目的地")
@RequestParam(value = "destination", required = false) String destination) {
return service.getDirection(origin,destination);
}
service层 通过应用AK和API找到的接口url发起请求
//百度地图 应用AK
private static final String ak = "x5oankmSoKM9XEZsbtWPfE7aabnojtI9";
//百度地图 驾车路线规划api
private static final String url = "https://api.map.baidu.com/directionlite/v1/driving?origin=";
@Override
public Map<Object, Object> getDirection(String origin, String destination) {
Map<Object, Object> map = new HashMap<>();
String s = HttpUtil.doGet(url + origin + "&destination=" + destination + "&ak=" + ak);
System.out.println("响应结果为-------------------" + s);
JSONObject json = JSON.parseObject(JSON.parseArray(JSON.parseObject(JSON.parseObject(s).get("result").toString()).get("routes").toString()).get(0).toString());
// 耗时 单位 秒
String duration = json.get("duration").toString();
// 秒转换成分钟
int num = Integer.valueOf(duration) / 60;
// 距离 单位 米
String distance = json.get("distance").toString();
map.put("duration", num + 1); // 避免等于0
map.put("distance", distance);
System.out.println("两点之间距离为: " + distance + "米");
System.out.println("两点之间驾车时间为: " + num + "分钟");
return map;
}
调用的接口及调用结果如下：
奉上工具类
import org.apache.commons.io.IOUtils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
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.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLContextBuilder;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.conn.ssl.X509HostnameVerifier;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;
import java.security.GeneralSecurityException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.ssl.SSLSocketFactory;
/**
* HTTP 请求工具类
*/
public class HttpUtil {
private static PoolingHttpClientConnectionManager connMgr;
private static RequestConfig requestConfig;
private static final int MAX_TIMEOUT = 7000;
public HttpUtil()
{
}
static {
// 设置连接池
connMgr = new PoolingHttpClientConnectionManager();
// 设置连接池大小
connMgr.setMaxTotal(100);
connMgr.setDefaultMaxPerRoute(connMgr.getMaxTotal());
RequestConfig.Builder configBuilder = RequestConfig.custom();
// 设置连接超时
configBuilder.setConnectTimeout(MAX_TIMEOUT);
// 设置读取超时
configBuilder.setSocketTimeout(MAX_TIMEOUT);
// 设置从连接池获取连接实例的超时
configBuilder.setConnectionRequestTimeout(MAX_TIMEOUT);
// 在提交请求之前 测试连接是否可用
configBuilder.setStaleConnectionCheckEnabled(true);
requestConfig = configBuilder.build();
}
/**
* 发送 GET 请求（HTTP），不带输入数据
* @param url
*/
public static String doGet(String url) {
return doGet(url, new HashMap<String, Object>());
}
/**
* 发送 GET 请求（HTTP），K-V形式
* @param url
* @param params
*/
public static String doGet(String url, Map<String, Object> params) {
String apiUrl = url;
StringBuffer param = new StringBuffer();
int i = 0;
for (String key : params.keySet()) {
if (i == 0)
param.append("?");
else
param.append("&");
param.append(key).append("=").append(params.get(key));
i++;
}
apiUrl += param;
String result = null;
HttpClient httpclient = new DefaultHttpClient();
try {
HttpGet httpPost = new HttpGet(apiUrl);
HttpResponse response = httpclient.execute(httpPost);
int statusCode = response.getStatusLine().getStatusCode();
//System.out.println("执行状态码 : " + statusCode);
HttpEntity entity = response.getEntity();
if (entity != null) {
InputStream instream = entity.getContent();
result = IOUtils.toString(instream, "UTF-8");
}
} catch (IOException e) {
e.printStackTrace();
}
return result;
}
/**
* 发送 POST 请求（HTTP），不带输入数据
* @param apiUrl
* @return
*/
public static String doPost(String apiUrl) {
return doPost(apiUrl, new HashMap<String, Object>());
}
/**
* 发送 POST 请求（HTTP），K-V形式
* @param apiUrl API接口URL
* @param params 参数map
*/
public static String doPost(String apiUrl, Map<String, Object> params) {
CloseableHttpClient httpClient = HttpClients.createDefault();
String httpStr = null;
HttpPost httpPost = new HttpPost(apiUrl);
CloseableHttpResponse response = null;
try {
httpPost.setConfig(requestConfig);
List<NameValuePair> pairList = new ArrayList<NameValuePair>(params.size());
for (Map.Entry<String, Object> entry : params.entrySet()) {
NameValuePair pair = new BasicNameValuePair(entry.getKey(), entry
.getValue().toString());
pairList.add(pair);
}
httpPost.setEntity(new UrlEncodedFormEntity(pairList, Charset.forName("UTF-8")));
response = httpClient.execute(httpPost);
System.out.println(response.toString());
HttpEntity entity = response.getEntity();
httpStr = EntityUtils.toString(entity, "UTF-8");
} catch (IOException e) {
e.printStackTrace();
} finally {
if (response != null) {
try {
EntityUtils.consume(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
}
}
return httpStr;
}
/**
* 发送 POST 请求（HTTP），JSON形式
* @param apiUrl
* @param json json对象
*/
public static String doPost(String apiUrl, Object json) {
CloseableHttpClient httpClient = HttpClients.createDefault();
String httpStr = null;
HttpPost httpPost = new HttpPost(apiUrl);
CloseableHttpResponse response = null;
try {
httpPost.setConfig(requestConfig);
StringEntity stringEntity = new StringEntity(json.toString(),"UTF-8");//解决中文乱码问题
stringEntity.setContentEncoding("UTF-8");
stringEntity.setContentType("application/json");
httpPost.setEntity(stringEntity);
response = httpClient.execute(httpPost);
HttpEntity entity = response.getEntity();
System.out.println(response.getStatusLine().getStatusCode());
httpStr = EntityUtils.toString(entity, "UTF-8");
} catch (IOException e) {
e.printStackTrace();
} finally {
if (response != null) {
try {
EntityUtils.consume(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
}
}
return httpStr;
}
/**
* 发送 SSL POST 请求（HTTPS），K-V形式
* @param apiUrl API接口URL
* @param params 参数map
*/
public static String doPostSSL(String apiUrl, Map<String, Object> params) {
CloseableHttpClient httpClient = HttpClients.custom().setSSLSocketFactory(createSSLConnSocketFactory()).setConnectionManager(connMgr).setDefaultRequestConfig(requestConfig).build();
HttpPost httpPost = new HttpPost(apiUrl);
CloseableHttpResponse response = null;
String httpStr = null;
try {
httpPost.setConfig(requestConfig);
List<NameValuePair> pairList = new ArrayList<NameValuePair>(params.size());
for (Map.Entry<String, Object> entry : params.entrySet()) {
NameValuePair pair = new BasicNameValuePair(entry.getKey(), entry
.getValue().toString());
pairList.add(pair);
}
httpPost.setEntity(new UrlEncodedFormEntity(pairList, Charset.forName("utf-8")));
response = httpClient.execute(httpPost);
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode != HttpStatus.SC_OK) {
return null;
}
HttpEntity entity = response.getEntity();
if (entity == null) {
return null;
}
httpStr = EntityUtils.toString(entity, "utf-8");
} catch (Exception e) {
e.printStackTrace();
} finally {
if (response != null) {
try {
EntityUtils.consume(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
}
}
return httpStr;
}
/**
* 发送 SSL POST 请求（HTTPS），JSON形式
* @param apiUrl API接口URL
* @param json JSON对象
*/
public static String doPostSSL(String apiUrl, Object json) {
CloseableHttpClient httpClient = HttpClients.custom().setSSLSocketFactory(createSSLConnSocketFactory()).setConnectionManager(connMgr).setDefaultRequestConfig(requestConfig).build();
HttpPost httpPost = new HttpPost(apiUrl);
CloseableHttpResponse response = null;
String httpStr = null;
try {
httpPost.setConfig(requestConfig);
StringEntity stringEntity = new StringEntity(json.toString(),"UTF-8");//解决中文乱码问题
stringEntity.setContentEncoding("UTF-8");
stringEntity.setContentType("application/json");
httpPost.setEntity(stringEntity);
response = httpClient.execute(httpPost);
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode != HttpStatus.SC_OK) {
return null;
}
HttpEntity entity = response.getEntity();
if (entity == null) {
return null;
}
httpStr = EntityUtils.toString(entity, "utf-8");
} catch (Exception e) {
e.printStackTrace();
} finally {
if (response != null) {
try {
EntityUtils.consume(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
}
}
return httpStr;
}
/**
* 创建SSL安全连接
*/
private static SSLConnectionSocketFactory createSSLConnSocketFactory() {
SSLConnectionSocketFactory sslsf = null;
try {
SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {
public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException {
return true;
}
}).build();
sslsf = new SSLConnectionSocketFactory(sslContext, new X509HostnameVerifier() {
@Override
public boolean verify(String arg0, SSLSession arg1) {
return true;
}
@Override
public void verify(String host, SSLSocket ssl) throws IOException {
}
@Override
public void verify(String host, X509Certificate cert) throws SSLException {
}
@Override
public void verify(String host, String[] cns, String[] subjectAlts) throws SSLException {
}
});
} catch (GeneralSecurityException e) {
e.printStackTrace();
}
return sslsf;
}
/**
* post form调用阿里云短信服务接口
*
* @param host
* @param path
* @param method
* @param headers
* @param querys
* @param bodys
*/
public static HttpResponse doPost(String host, String path, String method,
Map<String, String> headers,
Map<String, String> querys,
Map<String, String> bodys)
throws Exception {
HttpClient httpClient = wrapClient(host);
HttpPost request = new HttpPost(buildUrl(host, path, querys));
for (Map.Entry<String, String> e : headers.entrySet()) {
request.addHeader(e.getKey(), e.getValue());
}
if (bodys != null) {
List<NameValuePair> nameValuePairList = new ArrayList<NameValuePair>();
for (String key : bodys.keySet()) {
nameValuePairList.add(new BasicNameValuePair(key, bodys.get(key)));
}
UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(nameValuePairList, "utf-8");
formEntity.setContentType("application/x-www-form-urlencoded; charset=UTF-8");
request.setEntity(formEntity);
}
return httpClient.execute(request);
}
private static String buildUrl(String host, String path, Map<String, String> querys) throws UnsupportedEncodingException {
StringBuilder sbUrl = new StringBuilder();
sbUrl.append(host);
if (!StringUtils.isBlank(path)) {
sbUrl.append(path);
}
if (null != querys) {
StringBuilder sbQuery = new StringBuilder();
for (Map.Entry<String, String> query : querys.entrySet()) {
if (0 < sbQuery.length()) {
sbQuery.append("&");
}
if (StringUtils.isBlank(query.getKey()) && !StringUtils.isBlank(query.getValue())) {
sbQuery.append(query.getValue());
}
if (!StringUtils.isBlank(query.getKey())) {
sbQuery.append(query.getKey());
if (!StringUtils.isBlank(query.getValue())) {
sbQuery.append("=");
sbQuery.append(URLEncoder.encode(query.getValue(), "utf-8"));
}
}
}
if (0 < sbQuery.length()) {
sbUrl.append("?").append(sbQuery);
}
}
return sbUrl.toString();
}
private static HttpClient wrapClient(String host) {
HttpClient httpClient = new DefaultHttpClient();
if (host.startsWith("https://")) {
sslClient(httpClient);
}
return httpClient;
}
private static void sslClient(HttpClient httpClient) {
try {
SSLContext ctx = SSLContext.getInstance("TLS");
X509TrustManager tm = new X509TrustManager() {
public X509Certificate[] getAcceptedIssuers() {
return null;
}
public void checkClientTrusted(X509Certificate[] xcs, String str) {
}
public void checkServerTrusted(X509Certificate[] xcs, String str) {
}
};
ctx.init(null, new TrustManager[] { tm }, null);
SSLSocketFactory ssf = new SSLSocketFactory(ctx);
ssf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
ClientConnectionManager ccm = httpClient.getConnectionManager();
SchemeRegistry registry = ccm.getSchemeRegistry();
registry.register(new Scheme("https", 443, ssf));
} catch (KeyManagementException ex) {
throw new RuntimeException(ex);
} catch (NoSuchAlgorithmException ex) {
throw new RuntimeException(ex);
}
}
}
我话讲完！谁赞成？谁反对？
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