Добрый день при возврате элемента коллекции происходит ошибка. Как правильно сделать возврат элемента внутри цикла коллекции? В гугле ничего не нашел.
Есть таблица куда добавляется коллекция
<!--/*@thymesVar id="users" type="ru.test.database.entity.User"*/-->
<!--/*@thymesVar id="user" type="ru.test.database.entity.User"*/-->
<tr th:each="user : ${users}">
<td th:text="${user.id}" ></td>
<td th:text="${user.email}" ></td>
<td th:text="${user.firstName}" ></td>
<td th:text="${user.lastName}" ></td>
<td th:text="${user.level}" ></td>
<td th:text="${user.exp}" ></td>
<td th:text="${user.coins}" ></td>
<td><img th:src="${user.avatarPath}" /></td>
<td><form method="POST" enctype="multipart/form-data" action="#" th:action="@{/web-admin/deleteUser}" th:object="${user}"><button class="btn btn-danger">DELETE</button></form></td>
</tr>
Контроллер
@GetMapping("/users")
public String userForm(Model model){
model.addAttribute("userAttr", new UserAttr());
model.addAttribute("users", accountService.getAllUsers());
return "users";
}
@PostMapping("/users")
public String userList(@ModelAttribute("userAttr") UserAttr user, Model model){
try {
accountService.addUser(user.getEmail(), user.getFirstName(), user.getLastName(), user.getAvatar(), user.getLevel(), user.getExp(), user.getCoins());
} catch (Exception ex) {
model.addAttribute("error", ex);
}
model.addAttribute("users", accountService.getAllUsers());
return "users";
}
@PostMapping("/deleteUser")
public String deleteUser(@ModelAttribute("user") User user, Model model){
try {
accountService.deleteUser(user.getId());
} catch (Exception ex) {
model.addAttribute("error", ex);
}
model.addAttribute("users", accountService.getAllUsers());
return "users";
}
Обьект
@Entity
@Table(name = "users")
public class User{
@Id
@GeneratedValue(generator = "increment")
@GenericGenerator(name = "increment", strategy = "increment")
private long id;
@Column(name = "email")
private String email;
@Column(name = "first_name")
private String firstName;
@Column(name = "last_name")
private String lastName;
@Column(name = "level")
private int level;
@Column(name = "exp")
private long exp;
@Column(name = "coins")
private long coins;
@Column(name = "avatar_path")
private String avatarPath;
public User() {
}
public User(String email, String firstName, String lastName, int level, long exp, long coins, String avatarPath) {
this.email = email;
this.firstName = firstName;
this.lastName = lastName;
this.level = level;
this.exp = exp;
this.coins = coins;
this.avatarPath = avatarPath;
}
public long getId() {
return id;
}
public String getEmail() {
return email;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
public int getLevel() {
return level;
}
public long getExp() {
return exp;
}
public long getCoins() {
return coins;
}
public String getAvatarPath() {
return avatarPath;
}
public void setId(long id) {
this.id = id;
}
public void setEmail(String email) {
this.email = email;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public void setLevel(int level) {
this.level = level;
}
public void setExp(long exp) {
this.exp = exp;
}
public void setCoins(long coins) {
this.coins = coins;
}
public void setAvatarPath(String avatarPath) {
this.avatarPath = avatarPath;
}
}
Ошибка
2017-09-14 09:31:18.660 ERROR 1172 --- [io-2308-exec-10] org.thymeleaf.TemplateEngine : [THYMELEAF][http-nio-2308-exec-10] Exception processing template "achievements": Error during execution of processor 'org.thymeleaf.spring4.processor.attr.SpringInputGeneralFieldAttrProcessor' (achievements:41)
2017-09-14 09:31:18.671 ERROR 1172 --- [io-2308-exec-10] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateProcessingException: Error during execution of processor 'org.thymeleaf.spring4.processor.attr.SpringInputGeneralFieldAttrProcessor' (achievements:41)] with root cause
java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'achievementAttr' available as request attribute
at org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:144) ~[spring-webmvc-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at org.thymeleaf.spring4.util.FieldUtils.getBindStatusFromParsedExpression(FieldUtils.java:401) ~[thymeleaf-spring4-2.1.5.RELEASE.jar:2.1.5.RELEASE]
at org.thymeleaf.spring4.util.FieldUtils.getBindStatus(FieldUtils.java:328) ~[thymeleaf-spring4-2.1.5.RELEASE.jar:2.1.5.RELEASE]
at org.thymeleaf.spring4.util.FieldUtils.getBindStatus(FieldUtils.java:294) ~[thymeleaf-spring4-2.1.5.RELEASE.jar:2.1.5.RELEASE]
at org.thymeleaf.spring4.processor.attr.AbstractSpringFieldAttrProcessor.processAttribute(AbstractSpringFieldAttrProcessor.java:98) ~[thymeleaf-spring4-2.1.5.RELEASE.jar:2.1.5.RELEASE]
at org.thymeleaf.processor.attr.AbstractAttrProcessor.doProcess(AbstractAttrProcessor.java:87) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]
at org.thymeleaf.processor.AbstractProcessor.process(AbstractProcessor.java:212) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]
at org.thymeleaf.dom.Node.applyNextProcessor(Node.java:1017) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]
Сложный
Простой