java开发微信公众号

1.接入微信公众号

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
            System.out.println("接口测试开始！！！");
//微信加密签名
            String signature = request.getParameter("signature");
//时间戳
            String timestamp = request.getParameter("timestamp");
//随机数
            String nonce = request.getParameter("nonce");
//随机字符串
            String echostr = request.getParameter("echostr");

            PrintWriter out = response.getWriter();
//通过校验signature对请求进行校验，若校验成功则原样返回echostr，表示接入成功，否则接入失败
if(SignUtil.checkSignature(signature,timestamp,nonce)){
out.print(echostr);
            }
out.close();
out = null;
//            response.encodeRedirectURL("success.jsp");
            

    }
/**
     * 处理微信服务器发来的消息
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
//消息的接受、处理、响应
        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");
//调用核心业务类型接受消息、处理消息
        String respMessage = EastnetService.processRequest(request);

//响应消息
        PrintWriter out = response.getWriter();
out.print(respMessage);
out.close();


    }

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;

/**
 * 请求校验工具类
 * @author pengsong
 * @date 2016.01.19
 */
public class SignUtil {
    //与微信配置中的的Token一致
    private static String token  = "你的token";
    
    public static boolean checkSignature(String signature, String timestamp,
            String nonce) {
        String[] arra = new String[]{token,timestamp,nonce};
        //将signature,timestamp,nonce组成数组进行字典排序
        Arrays.sort(arra);
        StringBuilder sb = new StringBuilder();
        for(int i=0;i<arra.length;i++){
            sb.append(arra[i]);
        }
        MessageDigest md = null;
        String stnStr = null;
        try {
            md = MessageDigest.getInstance("SHA-1");
            byte[] digest = md.digest(sb.toString().getBytes());
            stnStr = byteToStr(digest);
        } catch (NoSuchAlgorithmException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        //释放内存
        sb = null;
        //将sha1加密后的字符串与signature对比，标识该请求来源于微信
        return stnStr!=null?stnStr.equals(signature.toUpperCase()):false;
    }
    /**
     * 将字节数组转换成十六进制字符串
     * @param digestArra
     * @return
     */
    private static String byteToStr(byte[] digestArra) {
        // TODO Auto-generated method stub
        String digestStr = "";
        for(int i=0;i<digestArra.length;i++){
            digestStr += byteToHexStr(digestArra[i]);
        }
        return digestStr;
    }
    /**
     * 将字节转换成为十六进制字符串
     */
    private static String byteToHexStr(byte dByte) {
        // TODO Auto-generated method stub
        char[] Digit = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
        char[] tmpArr = new char[2];
        tmpArr[0] = Digit[(dByte>>>4)&0X0F];
        tmpArr[1] = Digit[dByte&0X0F];
        String s = new String(tmpArr);
        return s;
    }
    
    public static void main(String[] args) {
        /*byte dByte = 'A';
        System.out.println(byteToHexStr(dByte));*/
        Map<String,String> map = new ConcurrentHashMap<String, String>();
        map.put("4", "zhangsan");
        map.put("100", "lisi");
        Set set = map.keySet();
        Iterator iter = set.iterator();
        while(iter.hasNext()){
//            String keyV = (String) iter.next();
            String key =(String)iter.next();
            System.out.println(map.get(key));
//            System.out.println(map.get(iter.next()));
        }
        /*for(int i=0;i<map.size();i++){
            
        }*/
    }

 

2.创建菜单

      2.1获取Access_Token

import java.io.BufferedReader;  
import java.io.InputStream;  
import java.io.InputStreamReader;  
import java.io.OutputStream;  
import java.net.ConnectException;  
import java.net.URL;  

import javax.net.ssl.HttpsURLConnection;  
import javax.net.ssl.SSLContext;  
import javax.net.ssl.SSLSocketFactory;  
import javax.net.ssl.TrustManager;  

import com.eastnet.wechat.pojo.AccessToken;
import com.eastnet.wechat.pojo.Menu;

import net.sf.json.JSONObject;   
public class WeixinUtil {
//    private static Logger log = LoggerFactory.getLogger(WeixinUtil.class);  
// 获取access_token的接口地址（GET） 限200（次/天）  
public final static String access_token_url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET";  
// 菜单创建（POST） 限100（次/天）  
public static String menu_create_url = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token=ACCESS_TOKEN";  
/** 
     * 发起https请求并获取结果 
     *  
     * @param requestUrl 请求地址 
     * @param requestMethod 请求方式（GET、POST） 
     * @param outputStr 提交的数据 
     * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值) 
*/  
public static JSONObject httpRequest(String requestUrl, String requestMethod, String outputStr) {  
        JSONObject jsonObject = null;  
        StringBuffer buffer = new StringBuffer();  
try {  
// 创建SSLContext对象，并使用我们指定的信任管理器初始化  
            TrustManager[] tm = { new MyX509TrustManager() };  
            SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");  
            sslContext.init(null, tm, new java.security.SecureRandom());  
// 从上述SSLContext对象中得到SSLSocketFactory对象  
            SSLSocketFactory ssf = sslContext.getSocketFactory();  

            URL url = new URL(requestUrl);  
            HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();  
            httpUrlConn.setSSLSocketFactory(ssf);  

            httpUrlConn.setDoOutput(true);  
            httpUrlConn.setDoInput(true);  
            httpUrlConn.setUseCaches(false);  
// 设置请求方式（GET/POST）  
            httpUrlConn.setRequestMethod(requestMethod);  

if ("GET".equalsIgnoreCase(requestMethod))  
                httpUrlConn.connect();  

// 当有数据需要提交时  
if (null != outputStr) {  
                OutputStream outputStream = httpUrlConn.getOutputStream();  
// 注意编码格式，防止中文乱码  
                outputStream.write(outputStr.getBytes("UTF-8"));  
                outputStream.close();  
            }  

// 将返回的输入流转换成字符串  
            InputStream inputStream = httpUrlConn.getInputStream();  
            InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");  
            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);  

            String str = null;  
while ((str = bufferedReader.readLine()) != null) {  
                buffer.append(str);  
            }  
            bufferedReader.close();  
            inputStreamReader.close();  
// 释放资源  
            inputStream.close();  
            inputStream = null;  
            httpUrlConn.disconnect();  
            System.out.println(buffer.toString());
            jsonObject = JSONObject.fromObject(buffer.toString());  
        } catch (ConnectException ce) {  
            System.out.println("Weixin server connection timed out.");
        } catch (Exception e) {  
            System.err.println("https request error:{}");
//            log.error("https request error:{}", e);  
        }  
return jsonObject;  
    }  
/** 
     * 获取access_token 
     *  
     * @param appid 凭证 
     * @param appsecret 密钥 
     * @return 
*/  
public static AccessToken getAccessToken(String appid, String appsecret) {  
        AccessToken accessToken = null;  

        String requestUrl = access_token_url.replace("APPID", appid).replace("APPSECRET", appsecret);  
        JSONObject jsonObject = httpRequest(requestUrl, "GET", null);  
// 如果请求成功  
if (null != jsonObject) {  
try {  
                accessToken = new AccessToken();  
                accessToken.setToken(jsonObject.getString("access_token"));  
                accessToken.setExpiresIn(jsonObject.getInt("expires_in"));  
            } catch (Exception e) {  
                accessToken = null;  
// 获取token失败  
                System.out.println("获取token失败 errcode:"+jsonObject.getInt("errcode")+"errmsg:"+jsonObject.getString("errmsg"));
//                log.error("获取token失败 errcode:{} errmsg:{}", jsonObject.getInt("errcode"), jsonObject.getString("errmsg"));  
            }  
        }  
return accessToken;  
    }
/** 
     * 创建菜单 
     *  
     * @param menu 菜单实例 
     * @param accessToken 有效的access_token 
     * @return 0表示成功，其他值表示失败 
*/  
public static int createMenu(Menu menu, String accessToken) {  
int result = 0;  

// 拼装创建菜单的url  
        String url = menu_create_url.replace("ACCESS_TOKEN", accessToken);  
// 将菜单对象转换成json字符串  
        String jsonMenu = JSONObject.fromObject(menu).toString();  
// 调用接口创建菜单  
        JSONObject jsonObject = httpRequest(url, "POST", jsonMenu);  

if (null != jsonObject) {  
if (0 != jsonObject.getInt("errcode")) {  
                result = jsonObject.getInt("errcode"); 
                System.out.println("创建菜单失败errcode:"+jsonObject.getInt("errcode")+"errmsg:"+jsonObject.getString("errmsg"));
//                log.error("创建菜单失败 errcode:{} errmsg:{}", jsonObject.getInt("errcode"), jsonObject.getString("errmsg"));  
            }  
        }  

return result;  
    } 
}

public class AccessToken {
// 获取到的凭证  
private String token;  
// 凭证有效时间，单位：秒  
private int expiresIn;  

public String getToken() {  
return token;  
    }  

public void setToken(String token) {  
this.token = token;  
    }  

public int getExpiresIn() {  
return expiresIn;  
    }  

public void setExpiresIn(int expiresIn) {  
this.expiresIn = expiresIn;  
    }  
}

import javax.net.ssl.X509TrustManager;  

/** 
 * 证书信任管理器（用于https请求） 
 *  
 * @author steve 
 * @date 2013-08-08 
*/  
public class MyX509TrustManager implements X509TrustManager{
public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {  
    }  

public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {  
    }  

public X509Certificate[] getAcceptedIssuers() {  
return null;  
    }  
}

 

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.eastnet.wechat.pojo.AccessToken;
import com.eastnet.wechat.pojo.Button;
import com.eastnet.wechat.pojo.CommonButton;
import com.eastnet.wechat.pojo.ComplexButton;
import com.eastnet.wechat.pojo.Menu;
import com.eastnet.wechat.pojo.ViewButton;
import com.eastnet.wechat.utils.WeixinUtil;

public class CreateMenuServlet extends HttpServlet {

/**
     * Constructor of the object.
*/
public CreateMenuServlet() {
        super();
    }

/**
     * Destruction of the servlet. <br>
*/
public void destroy() {
        super.destroy(); // Just puts "destroy" string in log
// Put your code here
    }

/**
     * The doGet method of the servlet. <br>
     *
     * This method is called when a form has its tag value method equals to get.
     * 
     * @param request the request send by the client to the server
     * @param response the response send by the server to the client
     * @throws ServletException if an error occurred
     * @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

// 第三方用户唯一凭证  
        String appId = "你的appId";  
// 第三方用户唯一凭证密钥  
        String appSecret = "你的appSecret";  

// 调用接口获取access_token  
        AccessToken at = WeixinUtil.getAccessToken(appId, appSecret);  

if (null != at) {  
// 调用接口创建菜单  
int result = WeixinUtil.createMenu(getMenu(), at.getToken());  

// 判断菜单创建结果  
if (0 == result){
                response.setContentType("text/html;charset=UTF-8");  
                PrintWriter pw = response.getWriter();  
                pw.println("菜单创建成功！");  
                pw.flush();     
            }else{
                response.setContentType("text/html;charset=UTF-8");  
                PrintWriter pw = response.getWriter();  
                pw.println("菜单创建失败，错误码：" + result);  
                pw.flush();     
            }   
        }
    }

/**
     * The doPost method of the servlet. <br>
     *
     * This method is called when a form has its tag value method equals to post.
     * 
     * @param request the request send by the client to the server
     * @param response the response send by the server to the client
     * @throws ServletException if an error occurred
     * @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        doGet(request, response);
    }

/**
     * Initialization of the servlet. <br>
     *
     * @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
    }
/** 
     * 组装菜单数据 
     *  
     * @return 
*/  
private static Menu getMenu() {  
        CommonButton btn11 = new CommonButton();  
        btn11.setName("个人信息查看");  
        btn11.setType("click");  
        btn11.setKey("stuInfoView");  

        CommonButton btn12 = new CommonButton();  
        btn12.setName("个人信息修改");  
        btn12.setType("click");  
        btn12.setKey("stuInfoEdit"); 

        CommonButton btn21 = new CommonButton();  
        btn21.setName("行程查看");  
        btn21.setType("click");  
        btn21.setKey("stuTravelView");  

        CommonButton btn22 = new CommonButton();  
        btn22.setName("行程添加");  
        btn22.setType("click");  
        btn22.setKey("stuTravelAdd");  

        CommonButton btn23 = new CommonButton();  
        btn23.setName("行程修改");  
        btn23.setType("click");  
        btn23.setKey("stuTravelEdit");  

        CommonButton btn31 = new CommonButton();  
        btn31.setName("操作说明");  
        btn31.setType("click");  
        btn31.setKey("help");  

        CommonButton btn32 = new CommonButton();  
        btn32.setName("呼叫管理员");  
        btn32.setType("click");  
        btn32.setKey("callAdmin");  

        CommonButton btn33 = new CommonButton();  
        btn33.setName("意见反馈");  
        btn33.setType("click");  
        btn33.setKey("suggestions");  

        ComplexButton mainBtn1 = new ComplexButton();  
        mainBtn1.setName("个人信息");  
        mainBtn1.setSub_button(new Button[] { btn11, btn12});  

        ComplexButton mainBtn2 = new ComplexButton();  
        mainBtn2.setName("行程");  
        mainBtn2.setSub_button(new Button[] { btn21, btn22, btn23});  

        ComplexButton mainBtn3 = new ComplexButton();  
        mainBtn3.setName("帮助");  
        mainBtn3.setSub_button(new Button[] { btn31, btn32, btn33 });  

/** 
         * 这是公众号xiaoqrobot目前的菜单结构，每个一级菜单都有二级菜单项<br> 
         *  
         * 在某个一级菜单下没有二级菜单的情况，menu该如何定义呢？<br> 
         * 比如，第三个一级菜单项不是“更多体验”，而直接是“幽默笑话”，那么menu应该这样定义：<br> 
         * menu.setButton(new Button[] { mainBtn1, mainBtn2, btn33 }); 
*/  
        Menu menu = new Menu();  
        menu.setButton(new Button[] { mainBtn1, mainBtn2, mainBtn3 });  

return menu;  
    }  

public class CommonButton extends Button {
private String type;  
private String key;  

public String getType() {  
return type;  
    }  

public void setType(String type) {  
this.type = type;  
    }  

public String getKey() {  
return key;  
    }  

public void setKey(String key) {  
this.key = key;  
    }  
}

public class ComplexButton extends Button {  
private Button[] sub_button;  

public Button[] getSub_button() {  
return sub_button;  
    }  

public void setSub_button(Button[] sub_button) {  
this.sub_button = sub_button;  
    }  
}  

public class Menu {
private Button[] button;  

public Button[] getButton() {  
return button;  
    }  

public void setButton(Button[] button) {  
this.button = button;  
    }  
}