春季提交表单时获取HTTP状态400错误mvc

Question

我有两个网页。一个是“user.jsp”和“person.jsp”。当我点击“注册”按钮时，它会转到“user.jsp”当我点击提交按钮其显示“Http状态400”。

PersonController.java

@Controller 
public class PersonController { 

    private PersonService personService; 
    private UserService userService; 

    @Autowired(required=true) 
    @Qualifier(value="personService") 
    public void setPersonService(PersonService ps){ 
     this.personService = ps; 
    } 


    @RequestMapping(value = "/persons", method = RequestMethod.GET) 
    public String listPersons(Model model) { 
     model.addAttribute("person", new Person()); 
     model.addAttribute("listPersons", this.personService.listPersons()); 
     return "person"; 
    } 

    //For add and update person both 
     @RequestMapping(value= "/person/add", method = RequestMethod.POST) 
     public String addPerson(@ModelAttribute("person") Person p,@ModelAttribute("user") User u){ 
      String name = p.getName(); 
      System.out.println("name is :"+name); 

      if(name == null || name == "") { 
       System.out.println("user is"+name); 
       return "user"; 
      } 

      else{ 
       //new person, add it 
       this.personService.addPerson(p); 
      } 

      return "redirect:/persons"; 

     } 
     @RequestMapping(value = "/user/add", method = RequestMethod.POST) 
     public String addUser(@ModelAttribute("user") User user) { 


       // new user, add to DB 
       this.userService.addUser(user); 

      return "redirect:/persons"; 

     } 

PersonDAOImpl.java

@Repository 
public class PersonDAOImpl implements PersonDAO { 

    private static final Logger logger = LoggerFactory.getLogger(PersonDAOImpl.class); 

    private SessionFactory sessionFactory; 

    public void setSessionFactory(SessionFactory sf){ 
     this.sessionFactory = sf; 
    } 

    @Override 
    public void addPerson(Person p) { 
     Session session = this.sessionFactory.getCurrentSession(); 
     session.persist(p); 
     logger.info("Person saved successfully, Person Details="+p); 
    } 

    @Override 
    public void updatePerson(Person p) { 
     Session session = this.sessionFactory.getCurrentSession(); 
     session.update(p); 
     logger.info("Person updated successfully, Person Details="+p); 
    } 

    @SuppressWarnings("unchecked") 
    @Override 
    public List<Person> listPersons() { 
     Session session = this.sessionFactory.getCurrentSession(); 
     List<Person> personsList = session.createQuery("from Person").list(); 
     for(Person p : personsList){ 
      logger.info("Person List::"+p); 
     } 
     return personsList; 
    } 

@Override 
    public Person getPersonByName(String name) { 
     Session session = this.sessionFactory.getCurrentSession(); 
     List<Person> usersList = session.createQuery(
       "from Person ").list(); 
     if (usersList.size() == 0) 
      return null; 
     Person usrObj1 = usersList.get(0); 
     return usrObj1; 
    } 

UserDAOImpl.java

@Repository 
public class UserDAOImpl implements UserDAO { 

    private static final Logger logger = LoggerFactory 
      .getLogger(UserDAOImpl.class); 

    private SessionFactory sessionFactory; 

    public void setSessionFactory(SessionFactory sf) { 
     this.sessionFactory = sf; 
    } 

    @Override 
    public void addUser(User user) { 
     Session session = this.sessionFactory.getCurrentSession(); 
     session.persist(user); 
     logger.info("User saved successfully, User Details=" + user); 
    } 

    @Override 
    public void updateUser(User user) { 
    Session session = this.sessionFactory.getCurrentSession(); 
     session.update(user); 
     logger.info("User updated successfully, User Details=" + user); 
    } 

    @SuppressWarnings("unchecked") 
    @Override 
    public List<User> listUsers() { 
     Session session = this.sessionFactory.getCurrentSession(); 
     List<User> usersList = session.createQuery("from User").list(); 
     for (User user : usersList) { 
      logger.info("User List::" + user); 
     } 
     return usersList; 
    } 
@SuppressWarnings("unchecked") 
    @Override 
    public User getUserByName(String fullName) { 
     Session session = this.sessionFactory.getCurrentSession(); 
     List<User> usersList = session.createQuery(
       "from User ").list(); 
     if (usersList.size() == 0) 
      return null; 
     User usrObj1 = usersList.get(0); 
     return usrObj1; 
    } 

Person.java

@Entity 
@Table(name="PERSON") 
public class Person { 

    @Id 
    @Column(name="id") 
    @GeneratedValue(strategy=GenerationType.IDENTITY) 
    private int id; 

    private String name; 

    private String country; 

    public int getId() { 
     return id; 
    } 

    public void setId(int id) { 
     this.id = id; 
    } 

    public String getName() { 
     return name; 
    } 

    public void setName(String name) { 
     this.name = name; 
    } 

    public String getCountry() { 
     return country; 
    } 

    public void setCountry(String country) { 
     this.country = country; 
    } 

    @Override 
    public String toString(){ 
     return "id="+id+", name="+name+", country="+country; 
    } 
} 

User.java

@Entity 
@Table(name = "user") 
@XmlRootElement(name = "User") 
public class User { 

    @Id 
    @Column(name = "id") 
    @GeneratedValue(strategy = GenerationType.IDENTITY) 
    private int id; 

    @Column(name = "fullname") 
    private String fullName; 



    @Column(name = "password") 
    private String password; 

    @Column(name = "email") 
    private String email; 

    @Column(name = "phone") 
    private Integer phone; 

    @XmlElement(name = "Id") 
    public int getId() { 
     return id; 
    } 

    public void setId(int id) { 
     this.id = id; 
    } 

    @XmlElement(name = "FullName") 
    public String getFullName() { 
     return fullName; 
    } 

    public void setFullName(String fullName) { 
     this.fullName = fullName; 
    } 



    @XmlElement(name = "Password") 
    public String getPassword() { 
     return password; 
    } 

    public void setPassword(String password) { 
     this.password = password; 
    } 

    @XmlElement(name = "EmailId") 
    public String getEmail() { 
     return email; 
    } 

    public void setEmail(String email) { 
     this.email = email; 
    } 

    @XmlElement(name = "PhoneNo") 
    public Integer getPhone() { 
     return phone; 
    } 

    public void setPhone(Integer phone) { 
     this.phone = phone; 
    } 

PersonServiceImpl.java

@Service 
public class PersonServiceImpl implements PersonService { 

    private PersonDAO personDAO; 

    public void setPersonDAO(PersonDAO personDAO) { 
     this.personDAO = personDAO; 
    } 

    @Override 
    @Transactional 
    public void addPerson(Person p) { 
     this.personDAO.addPerson(p); 
    } 

    @Override 
    @Transactional 
    public void updatePerson(Person p) { 
     this.personDAO.updatePerson(p); 
    } 

    @Override 
    @Transactional 
    public List<Person> listPersons() { 
     return this.personDAO.listPersons(); 
    } 

    @Override 
    @Transactional 
    public Person getPersonById(int id) { 
     return this.personDAO.getPersonById(id); 
    } 

    @Override 
    @Transactional 
    public Person getPersonByName(String name) { 
     return this.personDAO.getPersonByName(name); 
    } 

    @Override 
    @Transactional 
    public void removePerson(int id) { 
     this.personDAO.removePerson(id); 
    } 

UserServiceImpl.java

@Service 
    public class UserServiceImpl implements UserService { 

     private UserDAO userDAO; 

     public void setUserDAO(UserDAO userDAO) { 
      this.userDAO = userDAO; 
     } 

     @Override 
     @Transactional 
     public void addUser(User user) { 
      this.userDAO.addUser(user); 
     } 

     @Override 
     @Transactional 
     public void updateUser(User user) { 
      this.userDAO.updateUser(user); 
     } 

     @Override 
     @Transactional 
     public List<User> listUsers() { 
      return this.userDAO.listUsers(); 
     } 

     @Override 
     @Transactional 
     public User getUserById(int id) { 
      return this.userDAO.getUserById(id); 
     } 

     @Override 
     @Transactional 
     public void removeUser(int id) { 
      this.userDAO.removeUser(id); 
     } 

     @Override 
     @Transactional 
     public User getUserByName(String fullName) { 
      return this.userDAO.getUserByName(fullName); 
     } 

    } 

person.jsp

<c:url var="addAction" value="/person/add" ></c:url> 

<form:form action="${addAction}" commandName="person"> 
<table> 
    <c:if test="${!empty person.name}"> 
    <tr> 
     <td> 
      <form:label path="id"> 
       <spring:message text="ID"/> 
      </form:label> 
     </td> 
     <td> 
      <form:input path="id" readonly="true" size="8" disabled="true" /> 
      <form:hidden path="id" /> 
     </td> 
    </tr> 
    </c:if> 
    <tr> 
     <td> 
      <form:label path="name"> 
       <spring:message text="Name"/> 
      </form:label> 
     </td> 
     <td> 
      <form:input path="name" /> 
     </td> 
    </tr> 
    <tr> 
     <td> 
      <form:label path="country"> 
       <spring:message text="Country"/> 
      </form:label> 
     </td> 
     <td> 
      <form:input path="country" /> 
     </td> 
    </tr> 
    <tr> 
     <td colspan="2"> 


       <input type="submit" 
        value="<spring:message text="Add Person"/>" /> 


      <input type="submit" 
        value="<spring:message text="Register"/>" /> 

     </td> 
    </tr> 
</table>  
</form:form> 

user.jsp

<c:url var="addAction" value="/user/add"></c:url> 

      <form:form action="${addAction}" commandName="user"> 
       <table width="400px" height="150px"> 
        <c:if test="${!empty user.email}"> 
         <tr> 
          <td><form:label path="id"> 
            <spring:message text="ID" /> 
           </form:label></td> 
          <td><form:input path="id" readonly="true" size="8" 
            disabled="true" /> <form:hidden path="id" /></td> 
         </tr> 
        </c:if> 
        <c:if test="${!empty user.email}"> 



       </c:if> 
        <tr> 
         <td><form:label path="fullName"> 
           <spring:message text="Full Name" /> 
          </form:label></td> 
         <td><form:input path="fullName" /></td> 
        </tr> 


        <tr> 
         <td><form:label path="password"> 
           <spring:message text="Password" /> 
          </form:label></td> 
         <td><form:input type="password" path="password" /></td> 
        </tr> 
        <tr> 
         <td><form:label path="email"> 
           <spring:message text="Email" /> 
          </form:label></td> 
         <td><form:input path="email" /></td> 
        </tr> 
        <tr> 
         <td><form:label path="phone"> 
           <spring:message text="Phone" /> 
          </form:label></td> 
         <td><form:input path="phone" /></td> 
        </tr> 


        <tr> 
         <td colspan="2"><c:if test="${!empty user.email}"> 
           <input type="submit" 
            value="<spring:message text="Update Details"/>" /> 
          </c:if> <c:if test="${empty user.email}"> 
           <input type="submit" value="<spring:message text="Submit"/>" /> 
          </c:if></td> 
        </tr> 
       </table> 
      </form:form> 

在这个任何建议或意见这将是对我有帮助 感谢你

Answer 1

我希望这有助于！

https://en.wikipedia.org/wiki/List_of_HTTP_status_codes

400错误的请求 服务器不能或不会对请求处理由于表观客户端错误（例如，恶意请求语法，过大尺寸的，无效请求消息成帧或欺骗性请求路由）。

Answer 2

您还没有定义表单的HTTP方法属性：

<form:form action="${addAction}" commandName="user"> 

然后，默认方法为GET，因此它不会永远不会找到一个控制器，因为你的控制器/user/add预计RequestMethod.POST

如果添加方法属性，它将起作用：

<form:form action="${addAction}" commandName="user" method="POST">