Spring MVC-从JSP表中删除记录 [英] Spring MVC - delete record from JSP table
问题描述
我在JSP中获得了表,该表是数据库中表的镜像(显示所有记录和列),并且在每一行旁边都有删除"按钮,该按钮通过ID从数据库中删除行.但是,当我单击删除"按钮时,数据库中没有任何反应,似乎所选行的ID为空,但是在地址栏中显示了所选ID.我在做什么错了?
I got table in JSP, which is table's mirror image from database (all records and columns are displayed), and next to each row I got button "delete" which deletes row from database by ID. But when I click "delete" button then nothing happens in database, it seems like selected row's ID is null, but at address bar selected ID is displayed. What am I doing wrong?
控制器:
@RequestMapping(value="/checkout.html", method = RequestMethod.POST)
public ModelAndView checkOut(Model model, @RequestParam(value = "id", required = false) String id) throws SQLException{
setAppContext();
clinicService.deletePatient(id);
List<Patient> patients = clinicService.getAllpatients();
model.addAttribute("patients", patients);
ModelAndView checkout = new ModelAndView("CheckOut");
return checkout;
}
DAO:
public void deletePatient(String id) throws SQLException {
String query = "delete FROM virtualclinic.patient WHERE idpatient=?";
Connection con = null;
PreparedStatement ps = null;
con = dataSource.getConnection();
ps = con.prepareStatement(query);
ps.setString(1, id);
int out = ps.executeUpdate();
}
服务:
public void deletePatient(String id) throws SQLException {
ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("clinicconfig.xml");
patientDAO = ctx.getBean("patientDAO", PatientDAOImpl.class);
patientDAO.deletePatient(id);
}
JSP文件:
<c:forEach items="${patients}" var="patient">
<tr style="font-size: 10">
<td>${patient.id}</td>
<td>${patient.name}</td>
<td>${patient.lastName}</td>
<td>${patient.gender}</td>
<td>${patient.age}</td>
<td>${patient.phoneNumber}</td>
<td>${patient.address}</td>
<td>${patient.disease}</td>
<td>${patient.condition}</td>
<td>${patient.roomType}</td>
<td>${patient.roomNumber}</td>
<td>${patient.date}</td>
<td><form action="/VirtualClinic/checkout.html?selectedPatient=${patient.id}" method="post"><input type="submit" value="Delete"/></form></td>
</tr>
</c:forEach>
错误(?):
INFO: Mapped "{[/checkout.html],methods=[GET]}" onto public org.springframework.web.servlet.ModelAndView org.damian.controller.CheckOutController.infoPatient(org.springframework.ui.M odel) throws java.sql.SQLException
lut 17, 2016 3:16:57 AM org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMa pping register
INFO: Mapped "{[/checkoutPatient.html],methods=[GET]}" onto public org.springframework.web.servlet.ModelAndView org.damian.controller.CheckOutController.checkOut(org.springframework.ui.Model,java.lang.String) throws java.sql.SQLException
推荐答案
使用和GET而不是POST,因为在url上您使用的是参数selectedPatient
而不是预期的id
-更改"/"或"
Use and GET rather than a POST and because on the url you are using the parameter selectedPatient
rather than your expected id
- change either/or
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