我想构建一个表单来保存用户。我有两个表，用户和UserRole，如Spring Security中所述。要保存用户，我需要创建一个包含字段集的用户对象。我想创建一个复选框列表并将它们映射到一组UserRoles，但我不知道如何使用复选框映射它们。我有以下课程：
@Controller
public class UserController {
@Autowired
IUserService userService;
/** Default GET form handler for users, in submission will call saveRegistration */
@RequestMapping(value="/createuser", method=RequestMethod.GET)
public String createUser(Model model) {
// User form will be bind to this User object
model.addAttribute("user", new User());
// Code about adding the user roles to JSP?
// Maybe something like this?:
// User u = new User ("useruser","123456",false);
// Set<UserRole> roles = new HashSet<UserRole>();
// roles.add(new UserRole(u,"ROLE_ADMIN"));
// roles.add(new UserRole(u,"ROLE_USER"));
// model.addAttribute("roles", roles);
return "createuser";
}
/** This method will be called on form submission, handling POST request,
* It also validates the user input */
@RequestMapping(value="/createuser", method=RequestMethod.POST)
public String doCreateUser(Model model, @Valid User user, BindingResult result) {
if(result.hasErrors()) {
return "createuser";
}
userService.createUser(user,user.getUserRole()) //createUser(User user, Set<UserRole> role)
return "success";
}
}
我的JSP：
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="sf" uri="http://www.springframework.org/tags/form"%>
<!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">
<link rel="stylesheet" type="text/css" href="resources/css/createuser.css" />
</head>
<body onload='document.createUserForm.username.focus();'>
<sf:form name="createUserForm" method="post"
action="${pageContext.request.contextPath}/createuser"
commandName="user">
<table class="formtable">
<tr>
<td class="label">Username:</td>
<td><sf:input class="control" path="username" name="username"
type="text" /><br />
<div class="error">
<sf:errors path="username"></sf:errors>
</div></td>
</tr>
<tr>
<td class="label">Role:</td>
<td>
<ul>
<sf:checkboxes element="li" path="userRole" items="${roles}"></sf:checkboxes>
</ul></td>
</tr>
<tr>
<td class="label">Password:</td>
<td><sf:input class="control" path="password" name="password"
type="password" />
<div class="error">
<sf:errors path="password"></sf:errors>
</div></td>
</tr>
<tr>
<td class="label">Confirm Password:</td>
<td><input class="control" name="confirmpass" type="password" />
<div class="error">
<sf:errors path="password"></sf:errors>
</div></td>
</tr>
<tr>
<td class="label"></td>
<td><input class="control" value="Create account" type="submit" /></td>
</tr>
</table>
</sf:form>
用户角色：
public class UserRole {
private Integer userRoleId;
private User user;
private String role;
public UserRole () {
}
public UserRole(User user, String role) {
this.user = user;
this.role = role;
}
@Id
@GeneratedValue(strategy = IDENTITY)
@Column(name = "user_role_id",
unique = true, nullable = false)
public Integer getUserRoleId() {
return userRoleId;
}
public void setUserRoleId(Integer userRoleId) {
this.userRoleId = userRoleId;
}
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "username", nullable = false)
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
@Column(name = "role", nullable = false, length = 45)
public String getRole() {
return role;
}
public void setRole(String role) {
this.role = role;
}
public String toString () {
return role;
}
}
用户：
public class User {
@NotNull
@NotBlank(message="Username cannot be blank.")
@Size(min=4, max=15, message="Username must be between 4 and 15 characters long.")
@Pattern(regexp="^\\w{6,}$", message="Username can only consist of numbers, letters and the underscore character.")
private String username;
@NotBlank(message="Password cannot be blank.")
@Pattern(regexp="^\\S+$", message="Password cannot contain spaces.")
@Size(min=6, message="Username must be longer than 6 characters.")
private String password;
//private String confirmPassword;
private boolean enabled;
private Set<UserRole> userRole = new HashSet<UserRole>(0);
public User() {
}
public User(String username, String password, boolean enabled) {
this.username = username;
this.password = password;
this.enabled = enabled;
}
public User(String username, String password,
boolean enabled, Set<UserRole> userRole) {
this.username = username;
this.password = password;
this.enabled = enabled;
this.userRole = userRole;
}
@Id
@Column(name = "username", unique = true, nullable = false, length = 45)
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
@Column(name = "password", nullable = false, length = 60)
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
@Column(name = "enabled", nullable = false)
public boolean isEnabled() {
return enabled;
}
public void setEnabled(boolean enabled) {
this.enabled = enabled;
}
@OneToMany(fetch = FetchType.EAGER, mappedBy = "user")
public Set<UserRole> getUserRole() {
return userRole;
}
public void setUserRole(Set<UserRole> userRole) {
this.userRole = userRole;
}
/*public String getConfirmPassword() {
return confirmPassword;
}
public void setConfirmPassword(String confirmPassword) {
this.confirmPassword = confirmPassword;
}*/
}
提前致谢。