微信小程序签到考勤后端代码分享

/**

* Servlet implementation class Login

*/@WebServlet("/Login")public class Login extends HttpServlet {

private static final long serialVersionUID = 1L;

private static final String APPID="xxxxxxxxxx";

private static final String SECRET="xxxxxxxxxxxxxxxxxxxxxxxxxx";

/**

* Default constructor.

*/

public Login() {

// TODO Auto-generated constructor stub

}

/**

* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)

*/

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

//éè-??ó±à??

request.setCharacterEncoding("utf-8");

response.setContentType("text/html;charset=utf-8");

/* éè-ìó|í·?êDíajax??óò·??ê */

response.setHeader("Access-Control-Allow-Origin", "*");

/* D?o?±íê??ùóDμ?òìóò-ó-éò??óêü￡? */

response.setHeader("Access-Control-Allow-Methods", "GET,POST");

String flag=request.getParameter("flag");

//   System.out.println(flag);

if("login".equals(flag)) {

String code=request.getParameter("js_code");

String url = "https://api.weixin.qq.com/sns/jscode2session?appid="+APPID+

"&secret="+SECRET+"&js_code="+ code +"&grant_type=authorization_code";

JSONObject sjson=CommonUtil.httpsRequest(url, "GET", null);

/*String openid="";

String session_key="";

if (sjson != null) {

try {

openid = sjson.getString("openid");

session_key=sjson.getString("session_key");

} catch (Exception e) {

System.out.println("òμ??2ù×÷ê-°ü");

e.printStackTrace();

}

} else {

System.out.println("code?TD-");

}

System.out.println(session_key+"  "+openid);*/

/*Map<String, Object> result = new HashMap<String, Object>();

result.put("res", "test");

result.put("msg", "oóì¨ò?ê?μ?");*/

//   String json = new Gson().toJson(sjson);

// System.out.println(json);

Writer out=response.getWriter();

out.write(sjson.toString());

out.flush();

}

if("init".equals(flag)) {

StudentDAO studentDAO=new StudentDAO();

String userid=request.getParameter("userid");

boolean res=true;

try {

res=studentDAO.findCheck(userid);

} catch (Exception e) {

e.printStackTrace();

}

Map<String, Object> result = new HashMap<String, Object>();

result.put("res", res);

result.put("msg", "oóì¨ò?ê?μ?");

String json = new Gson().toJson(result);

//·μ-μ-￠D?D?3ìDò

Writer out = response.getWriter();

out.write(json);

out.flush();

}

if("student".equals(flag)) {

StudentDAO studentDAO=new StudentDAO();

String userid=request.getParameter("userid");

String studentName=request.getParameter("sname");

String studentNum=request.getParameter("snum");

Student student=new Student(userid, studentName, studentNum,new Date());

try {

int a=studentDAO.create(student);

if(a!=0) {

System.out.println("2?è?3é1|");

}

} catch (Exception e) {

e.printStackTrace();

}

}

if("teacher".equals(flag)) {

TeacherDAO teacherDAO=new TeacherDAO();

String userid=request.getParameter("userid");

String teacherName=request.getParameter("tname");

String teacherID=request.getParameter("tnum");

Teacher tea=new Teacher(userid, teacherID, teacherName,new Date());

try {

int a=teacherDAO.create(tea);

if(a!=0) {

System.out.println("2?è?3é1|");

}

} catch (Exception e) {

e.printStackTrace();

}

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