[英]Access Multiple beans using thymeleaf and springboot MVC
尝试使用 SpringBoot MVC 和 thymeleaf 在 POST 方法中访问多个对象。
这是 controller。
@Controller
public class PatientController {
ObjectMapper Obj = new ObjectMapper();
@GetMapping("/patient")
public static String patientForm(Model model) {
model.addAttribute("patient", new PatientDataModel());
model.addAttribute("patient1", new PatientDataModel1());
return "patient";
}
@RequestMapping(value="/patient", method=RequestMethod.POST, params="action=Send data to MongoDB cluster")
public static String patientSubmit(@ModelAttribute("patient") PatientDataModel patient, @ModelAttribute("patient1") PatientDataModel patient1, Model model, Object obj ) throws JsonProcessingException {
model.addAttribute("patient", patient);
model.addAttribute("patient1", patient1);
return "result";
}
以下是意见:
患者.html
<form action="#" th:action="@{/patient}" th:object="${patient}" method="post">
<div th:object="${patient1}" >
<p>Patient Id: <input type="text" th:value="${patient.id}" /></p>
<p>Patient Name: <input type="text" th:value="${patient.name}" /></p>
<p>Message: <input type="text" th:value="${patient.content}" /></p>
<p>address: <input type="text" th:value="${patient1.address}" /></p>
</div>
<p><input type="submit" name="action" value="Send data to MongoDB cluster" />
<input type="reset" value="Reset" /></p>
</form>
</div>
和结果。html
<div class="starter-template">
<h1>Result</h1>
<p th:text="'id: ' + ${patient.id}" />
<p th:text="'Name: ' + ${patient.name}" />
<p th:text="'content: ' + ${patient.content}" />
<p th:text="'address: ' + ${patient1.address}" />
<a href="/patient">Submit another message</a>
</div>
豆类是: PatientDataModel.java
public class PatientDataModel {
private long id;
private String content;
private String name;
public PatientDataModel()
{
}
public PatientDataModel(long id, String content, String name)
{
this.id = id;
this.content = content;
this.name = name;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
@Override
public String toString()
{
return "Patient [id=" + id + ", firstName=" + name + ", " +
"content=" + content + "]";
}
}
另一个豆子:
public class PatientDataModel1 {
private String address;
@Override
public String toString() {
return "Patient1 [address=" + address + "]";
}
public PatientDataModel1()
{
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
}
现在,问题是,我需要两个 bean 都可以在 GET 和 POST 方法中访问。 当我运行代码时,它正在执行但bean没有值,都是null。 请建议
最容易找到表格中的 1 个 object。 例如,创建一个新的 class PatientFormData
,其中包含来自 2 个对象的所有字段,并在 controller 中的 get 和 post 方法中转换/转换为对象。
例如:
public class PatientFormData {
private long id;
private String content;
private String name;
private String address;
public static PatientFormData from(PatientDataModel model,
PatientDataModel1 model1) {
id = model.getId();
content = model.getContent();
name = model.getName();
address = model.getAddress();
}
public PatientDataModel createPatientDataModel() {
PatientDataModel result = new PatientDataModel();
result.setId(id);
result.setContent(content);
result.setName(name);
return result;
}
// getters and setters here
}
在 controller 中使用它:
@Controller
public class PatientController {
ObjectMapper Obj = new ObjectMapper();
@GetMapping("/patient")
public static String patientForm(Model model) {
PatientFormData formData = PatientFormData.from(new PatientDataModel(), new PatientDataModel1());
model.addAttribute("patientFormData", formData);
return "patient";
}
@RequestMapping(value="/patient", method=RequestMethod.POST, params="action=Send data to MongoDB cluster")
public static String patientSubmit(@ModelAttribute("patientFormData") PatientFormData formData, Model model, Object obj ) throws JsonProcessingException {
PatientDataModel model = formData.createPatientDataModel();
PatientDataModel1 model1 = formData.createPatientDataModel1();
// Do more processing with objects
return "result";
}
还要确保使用*{..}
正确使用字段绑定:
<form action="#" th:action="@{/patient}" th:object="${patientFormData}" method="post">
<p>Patient Id: <input type="text" th:value="*{id}" /></p>
<p>Patient Name: <input type="text" th:value="*{name}" /></p>
<p>Message: <input type="text" th:value="*{content}" /></p>
<p>address: <input type="text" th:value="*{address}" /></p>
</div>
<p><input type="submit" name="action" value="Send data to MongoDB cluster" />
<input type="reset" value="Reset" /></p>
</form>
</div>
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