Trying to get hold of <spring:bind> tag. I am trying to print a String value. The code looks something like:
mySimpleBean myBean = presentStudent.getSubjects().getTeacherName();
String firstName = myBean.getTeacherFirstName()
Where I get "myBean" from another bean "presentStudent". On jsp I am trying:
<spring:bind path="presentStudent.subjects.teacherName.teacherFirstName">
<input type="text" name="${status.expression}" value="${status.value}">
But it doesnt print anything.
Also "presentStudent" is commandObject for this form:
<form:form id="stuTeachForm" name="stuTeachForm" method="post" commandName="presentStudent"
action="getStuTeachData.html">
You can use the sping input tag instead of the bind tag
<form:form id="stuTeachForm" name="stuTeachForm" method="post" commandName="presentStudent" action="getStuTeachData.html">
<form:input type="text" path="subjects.teacherName.teacherFirstName"/>
Might also be worth outputting the desired value to check your bean has been properly populated
First name is ${presentStudent.subjects.teacherName.teacherFirstName}
Related
I'm working on a Projekt where you can add workers to projects with their ids.I am using springboot, thymeleaf and a database means you give a project and a worker Id and the programm adds the worker to the project.workerlist. The Problem ist that I get this error:
Required request parameter 'projektId' for method parameter type String is not present
My HTML Form looks like this
<form action="#" th:action="#{neuenMitarbeiterzuProjektHinzufuegen}" method="post">
Projekt ID: <input type="text" th:value="*{projektId}" required/><br>
Mitarbeiter ID: <input type="text" th:value="*{mitarbeiterId}" required/><br>
<br>
<input type="submit" value="Mitarbeiter hinzufügen"/>
<input type="reset" value="Clear"/>
</form>
My Post Route Handler Method looks like this
#PostMapping(value="/neuenMitarbeiterzuProjektHinzufuegen")
public String neuenMitarbeiterzuProjektHinzufuegen(#RequestAttribute(value = "projektId") String projektID, #RequestAttribute(value = "mitarbeiterId") String mitarbeiterID,Model m)
{
Optional<Projekt> projekt = projektRepository.findById(Long.parseLong(projektID));
projektRepository.findById(Long.parseLong(projektID)).get().mitarbeiterHinzufuegen(mitarbeiterRepository.findById(Long.parseLong(mitarbeiterID)).get());
return "redirect:Projekte";
}
Looking at your code example I think you should be using #RequestParam not #RequestAttribute. Param is for things posted from the user (web) side and attribute you can set on the server side.
This blog has some explanation on the difference of #RequestAttribute https://www.logicbig.com/tutorials/spring-framework/spring-web-mvc/request-attribute.html
Suppose, I have the following Spring form
<form:form id="mainForm" name="mainForm"
method="post" action="Temp.htm" commandName="tempBean">
<form:hidden path="stringValue" />
</form:form>
The hidden field is mapped with the command bean - TempBean. What if, I need to pass a default value which is dynamic to this hidden field and dependent upon some other operations?
HTML context:
<c:set var="someVariable" value="${someValue}"/>
<input type="hidden"
id="stringValue"
name="stringValue"
value="${someVariable}"/>
The tags like <form:input> and <form:hidden> don't have a value attribute. So, how to pass a default value to a command object in this scenario?
I'm using Spring 3.2.0.
You can set the default value to the bean you are using in common name
#RequestMapping(value="/someView.html", method=RequestMethod.GET)
public String someView(ModelMap modelMap){
TempBean tempBean = new TempBean();
tempBean.setStringValue(somevalue);
modelMap.addAttribute(tempBean );
return "something";
}
How to declare multiple commandName in JSP? Normal example (one command name):
<form:form method="post" action="saveContact.do" commandName="newContact">
I want:
<form:form method="post" action="saveContact.do" commandName="newContact" commandName="newAdress">
It is allowed to have only one object per form, you can create another class with fields newContact and newAdress.
I suggest you to make a Pojo with newContact which contains newAdress.
public class Contact{
Address adress;
getAddress(){
return address
}
setAddress(Address address){
this.address=address;
}
Fix the form to work in this way and all work well.
<form:form method="post" action="saveContact.do" commandName="newContact">
<form:input name="address.street" />
</form:form>
I have a simple contact form in my spring project, which is meant to access a backing object, but I get this error
"Neither BindingResult nor plain target object for bean name 'indexBacking' available as request attribute"
My form looks like this:
<form:form action="index.htm" enctype="multipart/form-data" method="post" commandName="indexBacking" accept-charset="UTF-8">
<form:label path="personName">Name</form:label>
<form:input id="personName" path="personName" autocomplete="false" /><br />
<form:label path="personEmail">Email</form:label>
<form:input id="personEmail" path="personEmail" autocomplete="false" /><br />
<form:label path="personComments">Your Comments</form:label>
<form:input id="personComments" path="personComments" autocomplete="false" /><br />
<input type="submit" alt="Submit"/>
</form:form>
Which is meant to access my controller and save the fields "personName", "personEmail" and "personComments" into my backing object called "indexBacking".
My controller method that I am trying to access is here:
#RequestMapping(value = PAGE_NAME, method = RequestMethod.POST)
public String handleContactForm(ModelMap map, HttpServletRequest request, #ModelAttribute("indexBacking") IndexBacking bo, BindingResult result) {
return MODEL_NAME;
}
But I am not sure hot it links with the backing object. Any ideas what I am doing wrong?
Thanks
Jon
Try using modelAttribute="indexBacking" on form:form instead of commandName="indexBacking".
Also, take a look at this answer; it might have useful information for your case.
The problem was very simple, I was just being an idiot. I saw a colleague of mine working on a form and assumed a few of his classes were part of Spring as default. All I had to do was handle the received data at the other end properly (by calling the appropriate methods in the controller) and it worked fine.
Thanks for your help chaps - credit to #nobeh for pointing me in the right direction.
The problem is in your controller!
The following may help you much for your request Check This
I have the following class that I am attempting to use as a command object
public class Member {
private String datePeriod;
private String status;
private ArrayList <Project> projectList;
}
On the JSP, I would like the form to prefill with a pre-existing values.
<c:forEach items="${member.projectList}" var="project">
<tr>
<td><form:input path="**<var???>**" value="${project.projectEntry.projectDesc}" /></td>
</tr>
</c:forEach>
I am making an error with path which is causing an error in jsp. Does anyone know the proper syntax with regards to each iteration? Thanks.
My Spring MVC is bit rusty but if I remember correctly, path gets translated as the input name property in HTML eventually. So you can put any Label value in there and that should work.
<form:input path="ProjectDescription" value="${project.projectEntry.projectDesc}" type="text" />
This should get translated to:
<input name="ProjectDescription" type="text" value="<whatever_you_have_in_backing_bean>"/>
Do you want to look up name from a backing bean instead? If so you should be able to do something like below. Without knowing your data structure I am assuming it to be status.
<form:input path="member.status" value="${project.projectEntry.projectDesc}" type="text" />
More on the form tag here.