带hibernate注释的Spring MVC一对一CRUD
我不熟悉Spring和hibernate框架。我需要使用SpringMVC和hibernate插入员工详细信息。我需要从resightrationemployee.jsp获取员工和地址的详细信息,并需要使用Bean类保存到数据库中。但当我从Employee bean中获取地址时,会出现空指针异常。我还怀疑我需要使用哪个Bean来插入数据。我的方法如下 AppController.java带hibernate注释的Spring MVC一对一CRUD,spring,hibernate,spring-mvc,Spring,Hibernate,Spring Mvc,我不熟悉Spring和hibernate框架。我需要使用SpringMVC和hibernate插入员工详细信息。我需要从resightrationemployee.jsp获取员工和地址的详细信息,并需要使用Bean类保存到数据库中。但当我从Employee bean中获取地址时,会出现空指针异常。我还怀疑我需要使用哪个Bean来插入数据。我的方法如下 AppController.java @Controller @RequestMapping("/") @SessionAttributes("r
@Controller
@RequestMapping("/")
@SessionAttributes("roles")
public class AppController {
@Autowired
UserService userService;
@Autowired
EmployeeService employeeService;
@Autowired
UserProfileService userProfileService;
@Autowired
MessageSource messageSource;
@Autowired
PersistentTokenBasedRememberMeServices persistentTokenBasedRememberMeServices;
@Autowired
AuthenticationTrustResolver authenticationTrustResolver;
/*@RequestMapping(value = { "/", "/list" }, method = RequestMethod.GET)
public String listUsers(ModelMap model) {
List<User> users = userService.findAllUsers();
model.addAttribute("users", users);
model.addAttribute("loggedinuser", getPrincipal());
return "userslist";
}*/
@RequestMapping(value = { "/", "/list" }, method = RequestMethod.GET)
public String listUsers(ModelMap model) {
List<User> users = userService.findAllUsers();
List<Employee> employees=employeeService.findAllEmployees();
model.addAttribute("users", users);
model.addAttribute("employees", employees);
model.addAttribute("loggedinuser", getPrincipal());
return "home";
}
@RequestMapping(value = { "/newuser" }, method = RequestMethod.GET)
public String newUser(ModelMap model) {
User user = new User();
model.addAttribute("user", user);
model.addAttribute("edit", false);
model.addAttribute("loggedinuser", getPrincipal());
return "registration";
}
@RequestMapping(value = { "/newuser" }, method = RequestMethod.POST)
public String saveUser(@Valid User user, BindingResult result,
ModelMap model) {
if (result.hasErrors()) {
return "registration";
}
if(!userService.isUserSSOUnique(user.getId(), user.getSsoId())){
FieldError ssoError =new FieldError("user","ssoId",messageSource.getMessage("non.unique.ssoId", new String[]{user.getSsoId()}, Locale.getDefault()));
result.addError(ssoError);
return "registration";
}
userService.saveUser(user);
model.addAttribute("success", "User " + user.getFirstName() + " "+ user.getLastName() + " registered successfully");
model.addAttribute("loggedinuser", getPrincipal());
return "registrationsuccess";
}
@RequestMapping(value = { "/newemployee" }, method = RequestMethod.GET)
public String addEmployee(ModelMap model) {
Employee employee = new Employee();
model.addAttribute("employee", employee);
model.addAttribute("edit", false);
model.addAttribute("loggedinuser", getPrincipal());
return "registrationemployee";
}
@RequestMapping(value = { "/newemployee" }, method = RequestMethod.POST)
public String saveEmployee(@Valid Employee employee, BindingResult result,
ModelMap model) {
System.out.println("Employee name:"+employee.getEmployeeReferenceId());
System.out.println("Address of Employee is:"+employee.getAddress().getPlace());
if (result.hasErrors()) {
return "registrationemployee";
}
if(!employeeService.isEmployeeReferenceIdUnique(employee.getEmployeeId(), employee.getEmployeeReferenceId())){
FieldError referenceIdError =new FieldError("employee","employeeReferenceId",messageSource.getMessage("non.unique.employeeReferenceId", new String[]{employee.getEmployeeReferenceId()}, Locale.getDefault()));
result.addError(referenceIdError);
return "registrationemployee";
}
employeeService.saveEmployee(employee);
model.addAttribute("success", "Employee " + employee.getEmployeeName() + " registered successfully");
model.addAttribute("loggedinuser", getPrincipal());
return "registrationsuccess";
}
@RequestMapping(value = { "/edit-user-{ssoId}" }, method = RequestMethod.GET)
public String editUser(@PathVariable String ssoId, ModelMap model) {
User user = userService.findBySSO(ssoId);
model.addAttribute("user", user);
model.addAttribute("edit", true);
model.addAttribute("loggedinuser", getPrincipal());
return "registration";
}
@RequestMapping(value = { "/edit-user-{ssoId}" }, method = RequestMethod.POST)
public String updateUser(@Valid User user, BindingResult result,
ModelMap model, @PathVariable String ssoId) {
if (result.hasErrors()) {
return "registration";
}
userService.updateUser(user);
model.addAttribute("success", "User " + user.getFirstName() + " "+ user.getLastName() + " updated successfully");
model.addAttribute("loggedinuser", getPrincipal());
return "registrationsuccess";
}
@RequestMapping(value = { "/delete-user-{ssoId}" }, method = RequestMethod.GET)
public String deleteUser(@PathVariable String ssoId) {
userService.deleteUserBySSO(ssoId);
return "redirect:/list";
}
@ModelAttribute("roles")
public List<UserProfile> initializeProfiles() {
return userProfileService.findAll();
}
@RequestMapping(value = "/Access_Denied", method = RequestMethod.GET)
public String accessDeniedPage(ModelMap model) {
model.addAttribute("loggedinuser", getPrincipal());
return "accessDenied";
}
@RequestMapping(value = "/login", method = RequestMethod.GET)
public String loginPage() {
if (isCurrentAuthenticationAnonymous()) {
return "login";
} else {
return "redirect:/list";
}
}
@RequestMapping(value="/logout", method = RequestMethod.GET)
public String logoutPage (HttpServletRequest request, HttpServletResponse response){
Authentication auth = SecurityContextHolder.getContext().getAuthentication();
if (auth != null){
persistentTokenBasedRememberMeServices.logout(request, response, auth);
SecurityContextHolder.getContext().setAuthentication(null);
}
return "redirect:/login?logout";
}
private String getPrincipal(){
String userName = null;
Object principal = SecurityContextHolder.getContext().getAuthentication().getPrincipal();
if (principal instanceof UserDetails) {
userName = ((UserDetails)principal).getUsername();
} else {
userName = principal.toString();
}
return userName;
}
private boolean isCurrentAuthenticationAnonymous() {
final Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
return authenticationTrustResolver.isAnonymous(authentication);
}
}
Address.java
@Entity
@Table(name="address")
public class Address implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
@Column(name="employee_address_id")
private int employeeAddressId=0;
public void setEmployeeAddressId(int employeeAddressId) {
this.employeeAddressId = employeeAddressId;
}
@Column(name="address",length=255)
private String place=null;
@OneToOne(targetEntity=Employee.class,fetch=FetchType.EAGER , cascade=CascadeType.ALL, orphanRemoval=true)
@JoinColumn(name="employee_id",referencedColumnName="employee_id")
private Employee parent;
public String getPlace() {
return place;
}
public void setPlace(String place) {
this.place = place;
}
public Employee getParent() {
return parent;
}
public void setParent(Employee parent) {
this.parent = parent;
}
public int getEmployeeAddressId() {
return employeeAddressId;
}
}
EmployeeService.java
public interface EmployeeService {
Employee findById(int id);
Employee findByReferenceId(String employeeRefernceId);
void saveEmployee(Employee employee);
void updateEmployee(Employee employee);
void deleteEmployeeByReferenceId(String employeeRefernceId);
List<Employee> findAllEmployees();
boolean isEmployeeReferenceIdUnique(Integer id, String employeeRefernceId);
}
我真的觉得我在这件事上错过了什么。纠正我的错误您需要检查如何在jsp表单中绑定员工模型 示例代码应如下所示:-
<form:form action="${pageContext.request.contextPath}/register"
method="post" commandName="employee">
<div>
<label for="name">Name</label>
<form:errors path="employeeName" cssStyle="color: #ff0000" />
<form:input path="employeeName" id="employeeName" class="form-Control" />
</div>
<div>
<label for="address.placeName">Street Name</label>
<form:input path="address.placeName" id="placeName" class="form-Control" />
</div>
</form:form>
名称
街道名称
希望这能解决您的问题。回答以下问题:- 这就是我的地址表没有值。但是员工的详细信息被记录下来了 插入。我是否应该保留address对象而不是Employee 对象来实现这一点(通过关系映射) 对于两个表上的数据持久化,您需要使用双向关系映射,示例如下:-
<form:form action="${pageContext.request.contextPath}/register"
method="post" commandName="employee">
<div>
<label for="name">Name</label>
<form:errors path="employeeName" cssStyle="color: #ff0000" />
<form:input path="employeeName" id="employeeName" class="form-Control" />
</div>
<div>
<label for="address.placeName">Street Name</label>
<form:input path="address.placeName" id="placeName" class="form-Control" />
</div>
</form:form>
雇员阶级
@OneToOne
@JoinColumn(name = "addressId")
private Address address;
//getter setter
地址类
@OneToOne
private Customer customer;
//getter setter
然后在您的控制器中,您可以调用服务instant以仅持久化员工数据,然后当员工数据持久化时,地址数据也持久化。What's on line(AppController.java:118)?只需先初始化place Kowalski的值即可。System.out.println(“员工地址为:”+Employee.getAddress().getPlace());这就是我所缺少的。您的员工地址似乎为空。。你应该填在Yes Kowalski里。我不知道如何填写这个值。这是一个POST请求。。客户端必须组装该对象..谢谢soewin。这对我有用。但还有一个问题。这就是我的地址表没有值。但是员工的详细信息被插入了。我是否应该保留address对象而不是Employee对象来实现这一点(通过关系映射)
SEVERE: Servlet.service() for servlet [dispatcher] in context with path [/SpringMVCWithSpringSecurity] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause
java.lang.NullPointerException
at com.sprongmvc.controller.AppController.saveEmployee(AppController.java:118)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:817)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:731)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:968)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:870)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:316)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:122)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:157)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:169)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:48)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:205)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:120)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:120)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:64)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:91)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:53)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:213)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:176)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:522)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1095)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
<form:form action="${pageContext.request.contextPath}/register"
method="post" commandName="employee">
<div>
<label for="name">Name</label>
<form:errors path="employeeName" cssStyle="color: #ff0000" />
<form:input path="employeeName" id="employeeName" class="form-Control" />
</div>
<div>
<label for="address.placeName">Street Name</label>
<form:input path="address.placeName" id="placeName" class="form-Control" />
</div>
</form:form>
@OneToOne
@JoinColumn(name = "addressId")
private Address address;
//getter setter
@OneToOne
private Customer customer;
//getter setter