微信公众号开发--获取access_token和Ticket
获取access_token官方文档链接
这里来是做的定时任务，服务器启动的时候和每一百分钟获取一次，access_token和Ticket，并存到数据库，后面代码中用到直接在数据库中取值就可以了，access_token是唯一标识，Ticket在后面的微信开发中用的到，这里全部直接获取，有效期都是两小时
主逻辑代码
import system.domain.AccesstokenDO;
import system.service.AccesstokenService;
import util.AuthUtil;
import util.HttpRequest;
import org.activiti.engine.impl.util.json.JSONObject;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
@Component
public class AccessTokenController {
@Autowired
AccesstokenService accesstokenService;
//刷新access_token 100分钟刷新一次,服务器启动的时候刷新一次（access_token有效期是120分钟，我设置的是每100分钟刷新一次）
@Scheduled(initialDelay = 1000, fixedDelay = 100*60*1000)
public void getToken() {
System.out.println("定时任务启动了");
// 微信管理后台获取
String wxspAppid = AuthUtil.APP_ID;
// 微信管理后台获取
String wxspSecret = AuthUtil.APP_SECRET;
//这里直接写死就可以，不用改，用法可以去看api
String grant_type="client_credential";
//封装请求数据
String params = "grant_type=" + grant_type + "&secret=" + wxspSecret + "&appid="+ wxspAppid;
//发送GET请求
String sendGet = HttpRequest.sendGet("https://api.weixin.qq.com/cgi-bin/token", params);
// 解析相应内容（转换成json对象）
JSONObject json = new JSONObject(sendGet);
//拿到accesstoken
String accesstoken = (String) json.get("access_token");
// 拿到accesstoken的有效期
String expiresin = json.get("expires_in").toString();
Long integer = Long.valueOf(expiresin);
Long i = integer * 1000;
//获取当前时间戳-->开始时间-->毫秒
Long begintime = System.currentTimeMillis();
//获取当前时间戳-->结束时间-->毫秒
Long endtime = begintime+i;
// ticket的有效期为7200秒
String ticket = null;
String url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token="+ accesstoken +"&type=jsapi";//这个url链接和参数不能变
try {
URL urlGet = new URL(url);
HttpURLConnection http = (HttpURLConnection) urlGet.openConnection();
http.setRequestMethod("GET"); // 必须是get方式请求
http.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
http.setDoOutput(true);
http.setDoInput(true);
System.setProperty("sun.net.client.defaultConnectTimeout", "30000");// 连接超时30秒
System.setProperty("sun.net.client.defaultReadTimeout", "30000"); // 读取超时30秒
http.connect();
InputStream is = http.getInputStream();
int size = is.available();
byte[] jsonBytes = new byte[size];
is.read(jsonBytes);
String message = new String(jsonBytes, "UTF-8");
net.sf.json.JSONObject demoJson = net.sf.json.JSONObject.fromObject(message);
System.out.println("JSON字符串："+demoJson);
ticket = demoJson.getString("ticket");
is.close();
} catch (Exception e) {
e.printStackTrace();
}
// 获取Ticket
String jsapi_ticket = ticket;
//创建查询条件
Map map= new HashMap();
map.put("appid",wxspAppid);
List<AccesstokenDO> list = accesstokenService.list(map);
// 把获取的数据放到数据库中
AccesstokenDO accesstokenDO = new AccesstokenDO();
accesstokenDO.setAppid(wxspAppid);
accesstokenDO.setBegintime(begintime.toString());
accesstokenDO.setEndtime(endtime.toString());
accesstokenDO.setAccesstoken(accesstoken);
accesstokenDO.setTicket(jsapi_ticket);
if (list.size()==0){
accesstokenService.save(accesstokenDO);
}else{
AccesstokenDO accesstokenDO1 = list.get(0);
Integer id = accesstokenDO1.getId();
accesstokenDO.setId(id);
accesstokenService.update(accesstokenDO);
}
System.out.println("定时任务结束了");
}
}
实体类
public class AccesstokenDO{
private Integer id;
private String accesstoken;
private String begintime;
private String endtime;
private String appid;
private String ticket;
public String getTicket() {
return ticket;
}
public void setTicket(String ticket) {
this.ticket = ticket;
}
public void setId(Integer id) {
this.id = id;
}
public Integer getId() {
return id;
}
public void setAccesstoken(String accesstoken) {
this.accesstoken = accesstoken;
}
public String getAccesstoken() {
return accesstoken;
}
public void setBegintime(String begintime) {
this.begintime = begintime;
}
public String getBegintime() {
return begintime;
}
public void setEndtime(String endtime) {
this.endtime = endtime;
}
public String getEndtime() {
return endtime;
}
public void setAppid(String appid) {
this.appid = appid;
}
public String getAppid() {
return appid;
}
}
工具类
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import net.sf.json.JSONObject;
/**
* 工具类 用来根据接口地址进行网络请求
*/
public class AuthUtil {
public static final String APP_ID = //填写自己的APPID
public static final String APP_SECRET = //填写自己的APPSECRET
public static JSONObject doGetJson(String url) throws Exception{
JSONObject jsonObject=null;
//初始化httpClient
DefaultHttpClient client=new DefaultHttpClient();
//用Get方式进行提交
HttpGet httpGet=new HttpGet(url);
//发送请求
HttpResponse response= client.execute(httpGet);
//获取数据
HttpEntity entity=response.getEntity();
//格式转换
if (entity!=null) {
String result= EntityUtils.toString(entity,"UTF-8");
jsonObject= JSONObject.fromObject(result);
}
//释放链接
httpGet.releaseConnection();
return jsonObject;
}
}
工具类
import com.alibaba.fastjson.JSONObject;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;
public class HttpRequest {
/**
* 向指定URL发送GET方法的请求
*/
public static String sendGet(String url, String param) {
String result = "";
BufferedReader in = null;
try {
String urlNameString = url + "?" + param;
URL realUrl = new URL(urlNameString);
// 打开和URL之间的连接
URLConnection connection = realUrl.openConnection();
// 设置通用的请求属性
connection.setRequestProperty("accept", "*/*");
connection.setRequestProperty("connection", "Keep-Alive");
connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 建立实际的连接
connection.connect();
// 获取所有响应头字段
Map<String, List<String>> map = connection.getHeaderFields();
// 遍历所有的响应头字段
// 定义 BufferedReader输入流来读取URL的响应
in = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
}
// 使用finally块来关闭输入流
finally {
try {
if (in != null) {
in.close();
}
} catch (Exception e2) {
e2.printStackTrace();
}
}
return result;
}
/**
* 单参数数据访问
*/
public static String sendGet(String url) {
String result = "";
BufferedReader in = null;
try {
String urlNameString = url;
URL realUrl = new URL(urlNameString);
// 打开和URL之间的连接
URLConnection connection = realUrl.openConnection();
// 设置通用的请求属性
connection.setRequestProperty("accept", "*/*");
connection.setRequestProperty("connection", "Keep-Alive");
connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 建立实际的连接
connection.connect();
// 获取所有响应头字段
Map<String, List<String>> map = connection.getHeaderFields();
// 遍历所有的响应头字段
// 定义 BufferedReader输入流来读取URL的响应
in = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
System.out.println("发送GET请求出现异常！" + e);
e.printStackTrace();
}
// 使用finally块来关闭输入流
finally {
try {
if (in != null) {
in.close();
}
} catch (Exception e2) {
e2.printStackTrace();
}
}
return result;
}
/**
* 向指定 URL 发送POST方法的请求
*/
public static String sendPost(String url, String param) {
PrintWriter out = null;
BufferedReader in = null;
String result = "";
try {
URL realUrl = new URL(url);
// 打开和URL之间的连接
URLConnection conn = realUrl.openConnection();
// 设置通用的请求属性
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 发送POST请求必须设置如下两行
conn.setDoOutput(true);
conn.setDoInput(true);
// 获取URLConnection对象对应的输出流
out = new PrintWriter(conn.getOutputStream());
// 发送请求参数
out.print(param);
// flush输出流的缓冲
out.flush();
// 定义BufferedReader输入流来读取URL的响应
in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
System.out.println("发送 POST 请求出现异常！" + e);
e.printStackTrace();
}
// 使用finally块来关闭输出流、输入流
finally {
try {
if (out != null) {
out.close();
}
if (in != null) {
in.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
return result;
}
public static String doPost(String postUrl, JSONObject obj) {
String lines = "";
StringBuffer sb = new StringBuffer("");
try {
// 创建连接
URL url = new URL(postUrl);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setRequestMethod("POST");
connection.setUseCaches(false);
connection.setInstanceFollowRedirects(true);
connection.setRequestProperty("Content-Type", "application/json");
connection.connect();
// POST请求
DataOutputStream out = new DataOutputStream(connection.getOutputStream());
// out.writeChars(obj.toString());
// out.write(obj.toString().getBytes("UTF-8"));
out.write(obj.toString().getBytes());
out.flush();
out.close();
// 读取响应
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
while ((lines = reader.readLine()) != null) {
lines = new String(lines.getBytes());
sb.append(lines);
}
reader.close();
// 断开连接
connection.disconnect();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return sb.toString();
}
}
还有就是service层在和sql语句就不粘贴了，每一个人用的东西不一样，喜欢的可以收藏，关注，评论，不喜欢的就当没看见