项目做了登录改密功能需要验证码的功能.
思路:页面点击获取验证码按钮,发送请求到后台,携带用户名作为参数.后台做一个servlet查询该用户的手机号.生成随机验证码.将验证码(+消息)+tel作为参数+其他接口参数拼成url调用第三方服务(云信).
实现:
1.页面js方法
function get_code_time(){
var uname = $("#uname").val();
if(!uname){
$("#users").html("请先输入您的用户名！");//提示信息
}else{
var data="uname="+uname;
$.get("sendCodes",{uname:uname},function(data){
code_time();//记时方法 //根据servlet返回的json判断短信发送状态
if(data=="0"){
alert("短信验证码发送失败,请重新获取");
}else if(data=="1"){
alert("用户名未注册");
}else if(data=="2"){
alert("用户名无效或手机号未注册");
}else if(data=="3"){
alert("短信发送成功");
}else if(data=="4"){
alert("验证码超时");
}
});
}
} var wait = 60; function code_time(){ // alert(567); if(wait==0){ $("#codes").removeAttr("disabled");//移除获取验证码按钮的disabled属性 $("#codes").val("重新获取验证码"); $("#msgs").val(""); wait =60; }else{ $("#codes").attr("disabled", true);//设置获取验证码按钮为不可触发 $("#codes").val("(" + wait + ")秒后获取验证码"); wait--; setTimeout("code_time()", 1000); } }
2.后台servlet:servlet的路径是上面js方法中的sendCodes
public class SendCodes extends HttpServlet {
@Override
protected void service(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String ret="",uname="",tel = "";
uname=request.getParameter("uname");
//判断用户名是否为空
if(uname==null || "".equals(uname)){
response.getWriter().write("1");
return;
}
//通过用户名找到电话号码
String sql = "select ccu.tel from table_user tu where tu.user_name= ? ";
Session session = new Session(EcConnection.get());//自己封装的获取数据库连接的方法
try{
tel = session.queryForColumn(String.class, sql, uname);
}catch (Exception e) {
e.printStackTrace();
}finally{
session.close();
}//手机号为空2
if (tel==null || "".equals(tel)) {
response.getWriter().write("2");
return;
}
//生成验证码
int Random = (int) ((Math.random()*9+1)*100000);//随机生成的6位数（验证码）
//发送到手机
//SMSTest sms=new SMSTest();
String mes= "您的验证码："+String.valueOf(Random)+",有效时间5分钟" ;
String msg = "";
try {
//由于服务器不能解析调用发送短信接口拼接的url, //发送短信,调另一服务,其实就是一个servlet,访问返回的是调用短信接口的发送状态码,
Map<String, String> paraMap = new HashMap<String, String>();
paraMap.put("mes", mes);
msg = HttpClient.post("http://127.0.0.1:8082/SendSms/semdsms?tel="+tel, paraMap);//自己封装的httpClientpost方法,下面粘代码
System.out.println(msg);
//如果返回的是错误服务错误信息
if("发送短信错误".equals(msg)){
response.getWriter().write("0");
return;
}
}catch (Exception e) {
e.printStackTrace();
response.getWriter().write("0");
return;
}
//新建一个实体类对象，把它做为一个容器来放验证码，帐号和收取验证码时间。服务不关闭，或是30分钟后就登陆无效
SmsMessageBean b = new SmsMessageBean(uname,Random+"",System.currentTimeMillis());
EcContainer.RandomMap.put(uname, b);
response.getWriter().write("3");
}
HttpClient访问的http://127.0.0.1:8082/SendSms/semdsms的servlet:service方法
protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
String tel = req.getParameter("tel");
String mes = req.getParameter("mes");
SMSTest sms = new SMSTest();
PrintWriter pw = resp.getWriter();
try {
String msg = sms.send(mes, tel);
pw.write(msg);
} catch (Exception e) {
e.printStackTrace();
pw.write("发送短信错误");
}
}
第三方短息接口:
public class SMS{
private static final String addr = "http://api.sms.cn/mt/";
//接口服务注册的用户id
private static final String userId = "*****";
/*
* 如uid是：test，登录密码是：123123
pwd=md5(123123test),即
pwd=b9887c5ebb23ebb294acab183ecf0769
线生成地址：http://www.sms.cn/password
*/ //接口注册的密码:经过拼接字符串和md5加密后的结果 private static final String pwd = "-----------------";
private static final String encode = "utf8"; //编码
public String send(String msgContent, String mobile) throws Exception {
//组建请求
String straddr = addr +
"?uid="+userId+
"&pwd="+pwd+
"&mobile="+mobile+ //手机号
"&encode="+encode+
"&content=" +URLEncoder.encode(msgContent, "UTF-8"); //编码格式要对应上，不然就收不到短信
StringBuffer sb = new StringBuffer(straddr);//发送请求
URL url = new URL(sb.toString());
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("POST");
BufferedReader in = new BufferedReader(new InputStreamReader(
url.openStream()));
//返回结果
String inputline = in.readLine();
String msg=inputline.substring(9, 12);
System.out.println("smstest="+msg);
return msg;
}
}
自己封装的httpClient方法: 直接使用即可.
public static String post(String baseUrl, Map<String, String> paramsMap) {
StringBuilder doc = new StringBuilder();
try {
StringBuilder queryString = new StringBuilder();
for (Iterator<String> it = paramsMap.keySet().iterator(); it
.hasNext();) {
String paramName = it.next().toString();
Object paramValue = paramsMap.get(paramName);
if (paramValue == null) {
paramValue = "";
}
queryString
.append(paramName)
.append("=")
.append(URLEncoder.encode(paramValue.toString(), encode))
.append("&");
}
if (queryString.length() > 0) {
queryString.deleteCharAt(queryString.length() - 1);
}
URL url = new URL(baseUrl);
HttpURLConnection uc = (HttpURLConnection) url.openConnection();
uc.setRequestMethod("POST");
// 设置参数--begin
uc.setDoOutput(true);
byte[] b = queryString.toString().getBytes();
uc.getOutputStream().write(b, 0, b.length);
uc.getOutputStream().flush();
uc.getOutputStream().close();
// 参数设置--end
BufferedReader in = new BufferedReader(new InputStreamReader(
uc.getInputStream(), encode));
String line = null;
while ((line = in.readLine()) != null) {
// 处理特殊字符
line = line.replace("&", "&");
doc.append(line);
}
} catch (IOException e) {
e.printStackTrace();
}
return doc.toString();
}
时间： 2024-11-09 15:27:50