i'm new with spring MVC and i'm trying to perform my first application. my objective is to have one web form used to take a string as input and another web form where i write the string on a web page.
i created the following files:
the controller:
package com.gipeto.app;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import com.prova.form.Prova;
import com.prova.form.User;
#Controller
public class NewController {
#RequestMapping(value="/secondaPagina", method=RequestMethod.GET)
public ModelAndView goToPage(ModelMap model) {
Prova funziona = new Prova();
funziona.setTest("pippo");
model.addAttribute("prova", funziona);
return new ModelAndView("secondPage","model",model);
}
}
my homepage:
<%# taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%# page session="false" %>
<html>
<head>
<title>Home</title>
</head>
<body>
<h1>
Hello world!
</h1>
<P> The time on the server is ${serverTime}. </P>
<button onclick="window.location.href='secondaPagina'"> entra </button>
</body>
</html>
The second page.jsp
<%# taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%# taglib uri="http://www.springframework.org/tags/form" prefix="form" %>
<%# page session="false" %>
<html>
<head>
<title>Test2</title>
</head>
<body>
<table>
<tr>
<td>nome</td>
<td>sesso</td>
<td>età</td>
</tr>
<tr>
<form:input path="test"/>
</tr>
</table>
<input type=submit value="salva">
</body>
</html>
when i try to run this code i obtain the following error:
HTTP Status 500 – Internal Server Error
Type Exception Report
Message An exception occurred processing JSP page [/WEB-INF/views/secondPage.jsp] at line [17]
Description The server encountered an unexpected condition that prevented it from fulfilling the request.
Exception
org.apache.jasper.JasperException: An exception occurred processing JSP page [/WEB-INF/views/secondPage.jsp] at line [17]
14: </tr>
15: <tr>
16:
17: <form:input path="test"/>
18:
19: </tr>
20: </table>
Can you help me to understand where is the issue?
thanks for your help
I think that happens because you don't actually have the form:form tag. Try it like this.
<form:form method="POST">
<table>
<tr>
<td>nome</td>
<td>sesso</td>
<td>età</td>
</tr>
<tr>
<form:input path="test"/>
</tr>
</table>
<input type=submit value="salva">
</form:form>
Related
HTTP Status 400 – Bad Request Type Status Report
Description The server cannot or will not process the request due to
something that is perceived to be a client error (e.g., malformed
request syntax, invalid request message framing, or deceptive request
routing).
I am new in Spring MVC and learning about #modelattribute annotation and getting above error.Everything else works fine without modelattribute annotaion. I even tried using #RequestParam instead of #modelattribute and everthing worked fine. But I am not able to understand what is wrong with the code below. Please can anyone help?
AdmissionController.java
package Demo.SpringAnnotation;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
#Controller
public class AdmissionController {
#RequestMapping(value="/welcome",method=RequestMethod.GET)
public ModelAndView formLoad() {
ModelAndView mav = new ModelAndView("AdmssionForm");
return mav;
}
#ModelAttribute
public void commonHeaders(Model model1) {
model1.addAttribute("headers", "New College of Engineering");
}
#RequestMapping(value="/admissionsucess",method=RequestMethod.POST)
public ModelAndView submitForm(#ModelAttribute("student1") Student student1) {
ModelAndView mav=new ModelAndView("AmissionSucess");
return mav;
}
}
AdmissionForm.jsp
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Admission Form</title>
</head>
<body>
<h2>${headers }</h2>
<form action="/SpringAnnotation/admissionsucess" method="post">
<table>
<tr>
<td>Name :</td>
<td><input type="text" name="studentName"></td>
</tr>
<tr>
<td>Hobbies:</td>
<td><input type="text" name="studentHobby"></td>
</tr>
<tr>
<td>Mobile:</td>
<td><input type="text" name="studentMobile"></td>
</tr>
<tr>
<td>Date Of birth:</td>
<td><input type="text" name="studentHobby"></td>
</tr>
<tr>
<td>Student Skills:</td>
<td><select name="studentSkills" multiple >
<option value="Java Core">Java Core</option>
<option value="Spring Core">Spring Core</option>
<option value="Spring MVC">Spring MVC</option>
</select></td>
</tr>
</table>
<button type="submit">Submit</button>
</form>
</body>
</html>
AdmissionSuccess.jsp
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Admission Sucess</title>
</head>
<body>
<h2>${headers }</h1>
<h4>Congratulation ${student1.studentName }, Your details are below</h4>
<table>
<tr>
<td>Name:</td>
<td>${student1.studentName}</td>
</tr>
<tr>
<td>Hobbies:</td>
<td>${student1.studentHobby}</td>
</tr>
<tr>
<td>Mobile:</td>
<td>${student1.studentMobile}</td>
</tr>
<tr>
<td>Date Of Birth:</td>
<td>${student1.studentDOB}</td>
</tr>
<tr>
<td>Name:</td>
<td>${student1.studentSkills}</td>
</tr>
</table>
</body>
</html>
You may need to annotate your class not as #Controller but as #ControllerAdvice. A useful page providing an example of the use of #ModelAttribute-- http://www.baeldung.com/spring-mvc-and-the-modelattribute-annotation --comments:
It is also important that you annotate the respective class as
#ControllerAdvice. Thus, you can add values in Model which will be
identified as global. This actually means that for every request a
default value exists, for every method in the response part.
Perhaps you are not adding all attributes in your Student class? In any event, perhaps a default object for Student is not available since #ControllerAdvice is not being used. I hope this helps. But regardless, more useful documentation on the subject can be found on that page I referenced above.
I have SQLLite database. Connection for the DB is in SQLite.java class. In ProductPage.jsp I have created an instance of this class.
Mistake is "SQLite cannot be resolved to a type". I use Tomcat server. Screen shot is attached. Could you please help me with this?
SQLite.java
import java.sql.Connection;
import java.sql.DriverManager;
public class SQLite {
Connection con =null;
public static Connection getConnection(){
try{
//Class.forName("org.sqlite.JDBC");
//adjust database path
Connection cn = DriverManager.getConnection("jdbc:sqlite:Lab_4.sqlite");
System.out.println("Connection successful");
return cn;
}catch(Exception e){
System.out.println("Error "+e.getMessage());
return null;
}
}
}
ProductPage.jsp
<%#page import="java.sql.Connection"%>
<%#page import="java.sql.PreparedStatement"%>
<%#page import="java.sql.ResultSet"%>
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Product Table</title>
</head>
<body>
<% Connection cn=new SQLite.getConnection();
String pid, name, price, stock, comments;
String query = ("SELECT * FROM T_PRODUCT");
PreparedStatement pstmt = cn.prepareStatement(query);
//pstmt.setInt(1, 2);
ResultSet rs = pstmt.executeQuery(); %>
<table border="2">
<tr>
<td>Product ID</td>
<td>Product Name</td>
<td>Product Price</td>
<td>Product Stock</td>
<td>Product Comments</td>
</tr>
<%
try
{
while(rs.next())
{%>
<tr><td><%out.println(rs.getInt("Prd_ID")); %></td></tr>
<tr><td><%out.println(rs.getString("Prd _Name")); %></td></tr>
<tr><td><%out.println(rs.getInt("Prd _Price")); %></td></tr>
<tr><td><%out.println(rs.getInt("Prd _Stock")); %></td></tr>
<tr><td><%out.println(rs.getString("Prd _Comments")); %></td></tr>
<%
}
%>
</table>
<%
cn.close();
}
catch(Exception e)
{
e.printStackTrace();
}
%>
</body>
</html>
Screenshot
You could try importing the SQLite.java class via a <page> tag, i.e. add the following to the start of your ProductPage.jsp:
<%# page import="SQLite" %>
If your SQLite.java class actually has a package (which you did not show us), then use this:
<%# page import="package.SQLite" %>
Note that many would consider it bad practice to import into a JSP, it being considered a violation of good MVC principles.
Hi i am trying to select category while adding new category.Category details get from DB and I am trying to fetch it's PK to product command by using <form:select> tag.
But it shows following error.
error
HTTP Status 400 – Bad Request
Type Status Report
Description The server cannot or will not process the request due to something that is perceived to be a client error (e.g., malformed request syntax, invalid request message framing, or deceptive request routing).
My Controller
#RequestMapping(value="productlist/addproduct" , method=RequestMethod.POST)
public String addProdt( #ModelAttribute ("prdt") Product p)
{
pd.addProduct(p);
MultipartFile prodImage=p.getImage();
if(!prodImage.isEmpty()){
Path paths=Paths.get("C:/Users/Dont open/Documents/Eclipse/ClickBuy/src/main/webapp/resources/Images/"+ p.getId()+".png");
try
{
prodImage.transferTo(new File(paths.toString()));
} catch (IllegalStateException e)
{
e.printStackTrace();
} catch (IOException e)
{
e.printStackTrace();
}
}
return "redirect:/allProduct";
}
Jsp
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%# include file="header.jsp"%>
<%#taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%# page isELIgnored="false"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%#taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<%# page isELIgnored="false" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script>
$( function() {
$( "#mfg" ).datepicker();
} );
</script>
</head>
<body>
<br>
<h2 align="center">PRODUCT FORM</h2><hr>
<div class="col-md-2 "></div>
<div align="center"><div class="container"><div class="col-md-8 ">
<form:form method="POST" action="productlist/addproduct" commandName="prdt" enctype="multipart/form-data">
<table class="table table-hover">
<tr>
<td> <form:label path="product_Name"> Enter Product Name</form:label></td>
<td><form:input type="text" path="product_Name" class="form-control"/></td>
</tr>
<tr>
<td> <form:label path="descripction"> Enter Product Descripction</form:label></td>
<td><form:input type="text" path="descripction" class="form-control"/></td>
</tr>
<tr>
<td> <form:label path="category"> Enter Product Category</form:label></td>
<td>
<form:select path="category">
<c:forEach var="x" items="${catg}">
<form:option value="${x.category_id}" label="${x.category_name}" /></c:forEach>
</form:select>
</td>
</tr>
<tr>
<td> <form:label path="price"> Enter Product Price</form:label></td>
<td><form:input type="text" path="price" placeholder=" Enter Product Price" class="form-control"/>
</td></tr>
<tr>
<td> <form:label path="mfg_Date"> Enter Manufacture Date</form:label></td>
<td><form:input type="text" id="mfg" path="mfg_Date" class="form-control"/></td>
</tr>
<tr>
<td> <label> Choose Image</label></td>
<td><form:input type="file" path="image" class="form-control"/></td>
</tr>
</table>
<input type="submit" class="btn btn-primary btn-block" value="Add" class="form-control"/>
</form:form>
</div></div></div></body>
</html>
Thanks in advance!!
This error has nothing to do with <form:select> tag
Still There are few things missing in your code which is resulting this error.
In JSP you are trying to upload file along with form data so you need to have multipartResolver bean defined in spring context from common-fileupload.jar
MultipartResolver Spring
Controller method should be changed like this
#RequestMapping(value="/productlist/addproduct" , method= RequestMethod.POST,consumes = {MediaType.MULTIPART_FORM_DATA_VALUE})
public ModelAndView addProdt(#ModelAttribute("prdt") Product p,BindingResult bindingResult)
This is an old question but In case anyone else experiences the same issue then look how I solved it.
The problem has nothing to do with the post method that was provide. It is thrown by the next page that you are redirecting to ("redirect:/allProduct"). Your ORM could not successfully map the database result to individual objects, this could be caused by not specifying a primary key or having keys that evaluate to null. So visit your database and fix it, make sure you have everything correct in the end.
Error
HTTP Status 400 – Bad Request depctive, malfunction
Type Status Report
Failed to convert value of type 'java.lang.String' to required type 'java.lang.Long'; nested in logs
I have got the same error while redirecting from one handler to another, my handler was handling request but it couldn't redirected to another Page.
return"redirect:/employeeReport";
I tried all methods but that couldn't solve my issue.
Then I just found that there was sequence mismatch in Entity property and form Property. Just matched all my Entity property and cleaned my project issue resolved.
Advice: Map all fields of your Entity class properly with your form, clean project and run again. Even if there is no issue in mapping of Entity's field this error comes then simply clean project and rerun might work.
I am trying to create simple application with log in function, using Spring Security. But i can't achieve desired result.
JSTL tag on my .jsp page doesn't pass test, while scriplet code does which i want to avoid in my application.
My JSP page.
<%# taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%# taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<%# page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Log in page</title>
</head>
<body>
<form action="<c:url value="/login"/>" method="POST">
<p>
<label for="username">Username</label>
<input type="text" id="username" name="username"/>
</p>
<p>
<label for="password">Password</label>
<input type="password" id="password" name="password"/>
</p>
<button type="submit" class="btn">Log in</button>
</form>
// This block of code is never executed
<c:if test="${error != null}">
Some test message
</c:if>
// While this one works fine
<%
if (request.getParameter("error") != null) {
out.write("error's value isn't null\n");
}
%>
</body>
</html>
WebSecurityConfigurerAdapter overriden configure method:
#Override
protected void configure(HttpSecurity http) throws Exception {
http.csrf().disable();
http.antMatchers("/product")
.access("hasRole('ROLE_MANAGER')");
http.authorizeRequests().and().formLogin()
.loginPage("/login")
.defaultSuccessUrl("/admin")
.failureUrl("/login?error")
.usernameParameter("username")
.passwordParameter("password")
.and().logout().logoutSuccessUrl("/login?logout");
}
Spring MVC Controller's method for mapping "/login" request.
#RequestMapping(value = "/login", method = RequestMethod.GET)
public String loginPage(Model model,
#RequestParam(value = "error", required = false) String error {
if (error != null) {
model.addAttribute("error", "Username or password is incorrect.");
}
return "login";
}
And this is what I get requesting http://localhost/login?error :
Image
I have changed
<%# page contentType="text/html;charset=UTF-8" language="java"%>
to
<%# page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
As i understood, EL evaluation was deactivated, so i manually activated it.
I am working on spring mvc application, there I have a form where a user can change his password. I am validating this form by using default spring form validation (see validator code below).
JSP Page:
<%# taglib uri="http://www.springframework.strong textorg/tags/form" prefix="spring"%>
<%# taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%# taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%>
<%# page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title> Change password </title>
</head>
<body>
<%#include file="index.jsp" %>
<div class="row">
<div class="container" style=" background-color: #F9FFED; ">
<div>
<h4><label>Change password:</label></h4>
</div>
<div class="col-md-12" >
<spring:form commandName="ChangePassword" action="ChangePassword.do" method="post">
<table>
<tr>
<td><label for="current_pwd" >Current Password</label></td>
<td><spring:input path="current_pwd" type="text" class="form-control" placeholder="Name"/></td>
<td><spring:errors path="current_pwd" type="text" cssStyle="color: red;"></spring:errors></td>
</tr>
<tr>
<td> </td>
</tr>
<tr>
<td><label for="newpassword" >New Password</label></td>
<td><spring:input path="newpassword" type="text" class="form-control" placeholder="Password"/></td>
<td><spring:errors path="newpassword" type="text" cssStyle="color: red;"></spring:errors></td>
</tr>
<tr>
<td> </td>
</tr>
<tr>
<td><label for="confirmPassword" >Confirm Password</label></td>
<td><spring:input path="confirmPassword" type="text" class="form-control" placeholder="Password"/></td>
<td><spring:errors path="confirmPassword" type="text" cssStyle="color: red;"></spring:errors></td>
</tr>
<tr>
<td> </td>
</tr>
<tr>
<td>
<button type="submit" class="btn btn-success"> SAVE </button>
Cancel
</td>
</tr>
</table>
</spring:form>
</div>
</div>
</div>
</body>
</html>
Controller get and post methods:
#RequestMapping(value="/ChangePassword",method=RequestMethod.GET)
public String changePassword(ChangePassword chPaswd,BindingResult result,ModelMap model){
chPaswd=new ChangePassword();
model.addAttribute("ChangePassword",chPaswd);
return "ChangePassword";
}
#RequestMapping(value="/ChangePassword",method=RequestMethod.POST)
public String changePasswordPost(ChangePassword chpwd,BindingResult result,ModelMap model,HttpSession session){
String message="";
changepwdValidator.validate(chpwd, result);
chpwd=new ChangePassword();
if(result.hasFieldErrors()){
System.out.println("Has errors");
model.addAttribute("ChangePassword",chpwd);
return "ChangePassword";
}else{
System.out.println("chnage pwd values :"+chpwd.getNewpassword()+","+"current pwd:"+chpwd.getCurrent_pwd());
try{
// some other operations
model.addAttribute("ChangePassword",chpwd);
}catch(Exception e){
message="Failed to process the request, please re-verify the values!";
model.addAttribute("message", message);
}
return "ChangePassword";
}
}
Validator class:
import org.springframework.validation.Errors;
import org.springframework.validation.ValidationUtils;
import org.springframework.validation.Validator;
import com.knot.pirautomation.models.ChangePassword;
public class ChangePasswordValidator implements Validator{
ChangePassword chngepwd;
public boolean supports(Class clazz) {
return ChangePassword.class.equals(clazz);
}
public void validate(Object target, Errors errors) {
if(target instanceof ChangePassword){
chngepwd=(ChangePassword) target;
System.out.println("----------");
System.out.println("Old pwd:"+chngepwd.getCurrent_pwd());
System.out.println("new pwd:"+chngepwd.getNewpassword());
System.out.println("confirm pwd:"+chngepwd.getConfirmPassword());
System.out.println("----------");
ValidationUtils.rejectIfEmptyOrWhitespace(errors, "newpassword", "NewPassword.required");
ValidationUtils.rejectIfEmptyOrWhitespace(errors, "confirmPassword", "ConfirmPassword.required");
ValidationUtils.rejectIfEmptyOrWhitespace(errors, "current_pwd", "Oldpassword.required");
if( !(chngepwd.getNewpassword().equals(chngepwd.getConfirmPassword()))){
errors.rejectValue("newpassword", "NewPassword.match");
}
if((chngepwd.getNewpassword().length()<8)){
errors.rejectValue("newpassword", "NewPasswordlength.match" );
}
if((chngepwd.getConfirmPassword().length()<8)){
errors.rejectValue("confirmPassword", "ConfirmPasswordlength.match" );
}
String blackListChars = "!'=();<> \"";
char blackListArr[] = blackListChars.toCharArray();
for(int i=0;i<blackListArr.length;i++) {
if(chngepwd.getNewpassword().contains("" + blackListArr[i])) {
errors.rejectValue("newpassword","NewPassword.invalidChars");
break;
}
}
for(int i=0;i<blackListArr.length;i++) {
if(chngepwd.getConfirmPassword().contains("" + blackListArr[i])) {
errors.rejectValue("confirmPassword","ConfirmPassword.invalidChars");
break;
}
}
}
}
}
error.properties file:
Oldpassword.required= Old password is required
NewPassword.required= New password is required
ConfirmPassword.required= Confirm password should be required
NewPassword.match= Confirmation passwords should match
NewPasswordlength.match= New Password should be at least 8 characters
ConfirmPasswordlength.match= Confirm Password should be at least 8 characters
NewPassword.invalidChars=New Password has special characters which are not allowed
ConfirmPassword.invalidChars= Confirm Password has special characters which are not allowed
You can see that when the form has errors, I am returning control back to the same JSP.
My problem is that I am unable to trace the bug/error where my spring form validation is working fine, but when I am trying to display the errors which are defined in my properties file.
You should not explicitly invoke validator. Use this validation method instead:
#Valid #ModelAttribute("forName") FormName formName,
BindingResult bindingResult, Model model,
RedirectAttributes redirectAttributes, HttpSession session