Java微信公众平台之获取地理位置

wx.config({ 
 debug: true, // 开启调试模式,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。 
 appId: '', // 必填，公众号的唯一标识 
 timestamp: , // 必填，生成签名的时间戳 
 nonceStr: '', // 必填，生成签名的随机串 
 signature: '',// 必填，签名 
 jsApiList: [] // 必填，需要使用的JS接口列表 
}); 

package com.phil.wechatauth.model.resp; 
 
import com.phil.common.result.ResultState; 
 
/** 
 * jsapi_ticket是公众号用于调用微信JS接口的临时票据 
 * @author phil 
 * @date 2017年8月21日 
 * 
 */ 
public class JsapiTicket extends ResultState { 
 
 /** 
 * 
 */ 
 private static final long serialVersionUID = -357009110782376503L; 
 
 private String ticket; //jsapi_ticket 
 
 private String expires_in; 
 
 public String getTicket() { 
 return ticket; 
 } 
 
 public void setTicket(String ticket) { 
 this.ticket = ticket; 
 } 
 
 public String getExpires_in() { 
 return expires_in; 
 } 
 
 public void setExpires_in(String expires_in) { 
 this.expires_in = expires_in; 
 } 
} 

/** 
 * 获取jsapi_ticket 调用微信JS接口的临时票据 
 * @return 
 */ 
public String getTicket(String accessToken) { 
 JsapiTicket jsapiTicket = null; 
 Map params = new TreeMap(); 
 params.put("access_token",accessToken); 
 params.put("type", "jsapi"); 
 String result = HttpReqUtil.HttpDefaultExecute(HttpReqUtil.GET_METHOD, WechatConfig.GET_TICKET_URL, params,""); 
 if(StringUtils.isNotBlank(result)){ 
 jsapiTicket = JsonUtil.fromJson(result, JsapiTicket.class); 
 } 
 if(jsapiTicket.getErrcode()==0){ 
 return jsapiTicket.getTicket(); 
 } 
 return null; 
} 

package com.phil.wechatauth.model.resp; 
 
/** 
 * JS-SDK的页面配置信息 
 * @author phil 
 * @date 2017年8月22日 
 * 
 */ 
public class JsWechatConfig { 
 
 private String appId; 
 
 private long timestamp; 
 
 private String noncestr; 
 
 private String signature; 
 
 public String getAppId() { 
 return appId; 
 } 
 
 public void setAppId(String appId) { 
 this.appId = appId; 
 } 
 
 public long getTimestamp() { 
 return timestamp; 
 } 
 
 public void setTimestamp(long timestamp) { 
 this.timestamp = timestamp; 
 } 
 
 public String getNoncestr() { 
 return noncestr; 
 } 
 
 public void setNoncestr(String noncestr) { 
 this.noncestr = noncestr; 
 } 
 
 public String getSignature() { 
 return signature; 
 } 
 
 public void setSignature(String signature) { 
 this.signature = signature; 
 } 
} 

/** 
 * 
 */ 
package com.phil.wechatauth.controller; 
 
import java.util.SortedMap; 
import java.util.TreeMap; 
 
import javax.servlet.http.HttpServletRequest; 
 
import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.stereotype.Controller; 
import org.springframework.web.bind.annotation.RequestMapping; 
 
import com.phil.common.config.SystemConfig; 
import com.phil.common.config.WechatConfig; 
import com.phil.common.util.DateTimeUtil; 
import com.phil.common.util.PayUtil; 
import com.phil.common.util.SignatureUtil; 
import com.phil.wechatauth.model.resp.JsWechatConfig; 
import com.phil.wechatauth.service.WechatAuthService; 
 
/** 
 * JS-SDK 
 * @author phil 
 * @date 2017年8月21日 
 * 
 */ 
@Controller 
@RequestMapping("/auth") 
public class WechatAuthController { 
 
 @Autowired 
 private WechatAuthService wechatAuthService; 
 
 /** 
 * 获取地理位置 
 * @param request 
 * @return 
 * @throws Exception 
 */ 
 @RequestMapping("/getLocation") 
 public String getLocation(HttpServletRequest request) throws Exception{ 
 JsWechatConfig jsWechatConfig = new JsWechatConfig(); 
 jsWechatConfig.setAppId(WechatConfig.APP_ID); 
 jsWechatConfig.setTimestamp(DateTimeUtil.currentTime()); 
 jsWechatConfig.setNoncestr(PayUtil.createNonceStr()); 
 SortedMap map = new TreeMap(); 
 map.put("jsapi_ticket", wechatAuthService.getTicket(wechatAuthService.findlastestToken())); 
 map.put("noncestr", jsWechatConfig.getNoncestr()); 
 map.put("timestamp", jsWechatConfig.getTimestamp()); 
 map.put("url", request.getRequestURL().toString()); 
 String signature = SignatureUtil.createSha1Sign(map, null, SystemConfig.CHARACTER_ENCODING); 
 jsWechatConfig.setSignature(signature); 
 request.setAttribute("jsWechatConfig", jsWechatConfig); 
 return "wechatauth/getLocation"; 
 } 
} 

/** 
 * 通过Map中的所有元素参与签名 
 * 
 * @param map 待参与签名的map集合 
 * @params apikey apikey中 如果为空则不参与签名，如果不为空则参与签名 
 * @return 
 */ 
public static String createSha1Sign(SortedMap map, String apiKey, String characterEncoding) { 
 String result = notSignParams(map, apiKey); 
 MessageDigest md = null; 
 try { 
 md = MessageDigest.getInstance("SHA-1"); 
 byte[] digest = md.digest(result.getBytes()); 
 result = byteToStr(digest); 
 } catch (NoSuchAlgorithmException e) { 
 e.printStackTrace(); 
 } 
 return result; 
} 

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