销售网站建设方案长沙百姓网
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2 代码实现
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2.1后端Java代码
获取参数工具类
import org.json.JSONObject;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Formatter;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
public class SignUtil {
public static String APP_ID="";//在controller中初始化
public static String APP_SECRET="";
public static void main(String[] args) {
String url = "https://www.**.com/share";
System.out.println(getResult(url));
};
public static Map<String, String> getResult(String url){
Map<String, String> ret = sign(getTicket(), url);
ret.put("appId", getAppId());
return ret;
}
private static String getAppId(){
return APP_ID;
}
private static String getToken(){
String accessToken = "";
String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid="+getAppId()+"&secret="+APP_SECRET;
try {
String resultString =HttpUtil.get(url);
if (null != resultString && !"".equals(resultString)) {
System.out.println(resultString);
JSONObject json = new JSONObject(resultString);
accessToken = json.get("access_token").toString();
}else{
System.out.println("返回值为空，请检查请求报文或者请求地址是否正确");
}
} catch (Exception e) {
e.printStackTrace();
}
return accessToken;
}
private static String getTicket(){
String ticket = "";
String url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token="+getToken()+"&type=jsapi";
try {
String resultString =HttpUtil.get(url);
if (null != resultString && !"".equals(resultString)) {
System.out.println(resultString);
JSONObject json = new JSONObject(resultString);
ticket = json.getString("ticket");
}else{
System.out.println("返回值为空，请检查请求报文或者请求地址是否正确");
}
} catch (Exception e) {
e.printStackTrace();
}
return ticket;
}
public static Map<String, String> sign(String jsapi_ticket, String url) {
Map<String, String> ret = new HashMap<String, String>();
String nonce_str = create_nonce_str();
String timestamp = create_timestamp();
String string1;
String signature = "";
//注意这里参数名必须全部小写，且必须有序
string1 = "jsapi_ticket=" + jsapi_ticket +
"&noncestr=" + nonce_str +
"×tamp=" + timestamp +
"&url=" + url;
System.out.println(string1);
try
{
MessageDigest crypt = MessageDigest.getInstance("SHA-1");
crypt.reset();
crypt.update(string1.getBytes("UTF-8"));
signature = byteToHex(crypt.digest());
}
catch (NoSuchAlgorithmException e)
{
e.printStackTrace();
}
catch (UnsupportedEncodingException e)
{
e.printStackTrace();
}
ret.put("url", url);
ret.put("jsapi_ticket", jsapi_ticket);
ret.put("nonceStr", nonce_str);
ret.put("timestamp", timestamp);
ret.put("signature", signature);
return ret;
}
private static String byteToHex(final byte[] hash) {
Formatter formatter = new Formatter();
for (byte b : hash)
{
formatter.format("%02x", b);
}
String result = formatter.toString();
formatter.close();
return result;
}
private static String create_nonce_str() {
return UUID.randomUUID().toString().replace("-","");
}
private static String create_timestamp() {
return Long.toString(System.currentTimeMillis() / 1000);
}
}
controller实现
@Controller
public class ShareController {
@Value("${wx.appid}")
private String appid;
@Value("${wx.appsecret}")
private String appsecret;
@RequestMapping("/index")
public ModelAndView show(){
SignUtil.APP_ID=appid;
SignUtil.APP_SECRET=appsecret;
ModelAndView mv=new ModelAndView();
String url="http://localhost:8080/index";
mv.addObject("share",SignUtil.getResult(url));
mv.setViewName("/index");
return mv;
}
}
2.2前端代码
<%@ page language=“java” import=“java.util.*” pageEncoding=“utf-8”%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+“😕/”+request.getServerName()+“:”+request.getServerPort()+path+“/”;
%>
