这是我的控制器:
package com.tec.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import com.tec.domain.RegisterDetails;
import com.tec.service.RegisterServiceIfc;
@Controller("registerServiceIfc")
public class LoginRegisterController {
private RegisterServiceIfc registerServiceIfc;
@Autowired(required=true)
@RequestMapping("/home.sahu")
public ModelAndView helloWorld() {
return new ModelAndView();
}
@RequestMapping("/registration.sahu")
public ModelAndView LoginPage() {
return new ModelAndView();
}
@RequestMapping("/registerDetails.sahu")
public ModelAndView registerDetails(RegisterDetails perDetails,Model model) {
model.addAttribute("pb",perDetails);
registerServiceIfc.registerPerson(perDetails);// getting exception here.Its showing perDetails object is null
return new ModelAndView();
}
}
这是我的服务班级:
package com.tec.service;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.tec.dao.RegisterDaoIfc;
import com.tec.domain.RegisterDetails;
@Service("registerDaoIfc")
public class RegisterServiceIfcImpl implements RegisterServiceIfc{
private RegisterDaoIfc registerDaoIfc ;
@Autowired(required=true)
@Override
@Transactional
public void registerPerson(RegisterDetails perDetails) {
registerDaoIfc.registerPerson(perDetails);
}
@Override
@Transactional
public List<RegisterDetails> getRegAllDetails() {
return registerDaoIfc.getRegAllDetails();
}
}
这是我的道课:
package com.tec.dao;
import java.util.List;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;
import com.tec.domain.RegisterDetails;
@Repository
public class RegisterDaoIfcImpl implements RegisterDaoIfc{
@Autowired(required=true)
SessionFactory sessionFactory;
@Override
@Transactional
public void registerPerson(RegisterDetails perDetails) {
this.sessionFactory.getCurrentSession().save(perDetails);
}
@Override
@Transactional
public List<RegisterDetails> getRegAllDetails() {
return this.sessionFactory.getCurrentSession().createCriteria(RegisterDetails.class).list();
}
}
This is my POJO class:
package com.tec.domain;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.persistence.Column;
@Entity
@Table(name="registerdetails")
public class RegisterDetails {
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
@Column(name = "pid")
private String pid;
@Column(name = "firstName")
private String firstName;
@Column(name = "lastName")
private String lastName;
@Column(name = "mobileNo")
private String mobileNo;
@Column(name = "email")
private String email;
@Column(name = "address")
private String address;
@Column(name = "landmark")
private String landmark;
@Column(name = "city")
private String city;
@Column(name = "state")
private String state;
@Column(name = "country")
private String country;
@Column(name = "pinno")
private String pinno;
public String getPid() {
return pid;
}
public void setPid(String pid) {
this.pid = pid;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getMobileNo() {
return mobileNo;
}
public void setMobileNo(String mobileNo) {
this.mobileNo = mobileNo;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getLandmark() {
return landmark;
}
public void setLandmark(String landmark) {
this.landmark = landmark;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getState() {
return state;
}
public void setState(String state) {
this.state = state;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
public String getPinno() {
return pinno;
}
public void setPinno(String pinno) {
this.pinno = pinno;
}
}
This is my JSP page:
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!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">
<title>Insert title here</title>
<link href='http://fonts.googleapis.com/css?family=Pacifico' rel='stylesheet' type='text/css'>
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<form action="registerDetails.sahu" class="elegant-aero">
<h1>Registration Form
<span>Please fill all the texts in the fields.</span>
</h1>
<label>
<span>First Name :</span>
<input type="text" name="firstName" id="firstName" value="${pb.firstName}">
</label>
<label>
<span>Last Name :</span>
<input type="text" name="lastName" id="lastName" value="${pb.lastName}">
</label>
<label>
<span>Mobile No :</span>
<input type="text" name="mobileNo" id="mobileNo" value="${pb.mobileNo}">
</label>
<label>
<span>Email :</span>
<input type="text" name="email" id="email" value="${pb.email}">
</label>
<label>
<span>Address :</span>
<input type="text" name="address" id="address" value="${pb.address}">
</label>
<label>
<span>Landmark :</span>
<input type="text" name="landmark" id="landmark" value="${pb.landmark}">
</label>
<label>
<span>City :</span>
<input type="text" name="city" id="city" value="${pb.city}">
</label>
<label>
<span>State :</span>
<input type="text" name="state" id="state" value="${pb.state}">
</label>
<label>
<span>Country :</span>
<input type="text" name="country" id="country" value="${pb.country}">
</label>
<label>
<span>Pin No :</span>
<input type="text" name="pinno" id="pinno" value="${pb.pinno}">
</label>
<label>
<span>Register :</span>
<input type="submit" value="register" class="button purple" >
</label>
</form>
</body>
</html>
This is my XML configuration file:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<context:component-scan base-package="com.tec.controller." />
<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
<!-- For Hibernate -->
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
p:location="/WEB-INF/jdbc.properties"></bean>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource"
p:driverClassName="${jdbc.driverClassName}"
p:url="${jdbc.databaseurl}" p:username="${jdbc.username}"
p:password="${jdbc.password}"></bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource"/>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.bytecode.use_reflection_optimizer">true</prop>
<prop key="hibernate.cache.provider_class">org.hibernate.cache.HashtableCacheProvider</prop>
<prop key="hibernate.sql_comments">true</prop>
<prop key="hibernate.format_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
<property name="annotatedClasses">
<list>
<value>com.tec.domain.RegisterDetails</value>
<value>com.tec.domain.StudentRegister</value>
</list>
</property>
</bean>
<tx:annotation-driven/>
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
This is my properties file for database:
jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.dialect=org.hibernate.dialect.MySQLDialect
jdbc.databaseurl=jdbc:mysql://localhost:3306/tecnics
jdbc.username=root
jdbc.password=root
This is my web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<display-name>Spring3MVC</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>swikriti</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>swikriti</servlet-name>
<url-pattern>*.sahu</url-pattern>
</servlet-mapping>
</web-app>
我收到以下异常:
严重:路径为[/ SpringTest]的上下文中的Servlet [swikriti]的Servlet.service()抛出异常[请求处理失败;嵌套的异常是java.lang.NullPointerException],其根本原因是com.tec.controller.LoginRegisterController.registerDetails(LoginRegisterController.java:48)处的com.tec.controller.LoginRegisterController.registerDetails(LoginRegisterController.java:48)处,sun.reflect处的本地原因org.springframework.web.bind.annotation.support.HandlerMethodInvoker.doInvokeMethod上的java.lang.reflect.Method.invoke上的.NativeMethodAccessorImpl.invoke(未知源) (HandlerMethodInvoker.java:710)位于org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:167)位于org.springframework.web.servlet.mvc.annotation。
我添加了以下库:
当然perDetails
对象会是null
。你错过了很多东西。
首先,在您的GET
请求中,应在show web form方法中添加以下内容。同样在每个请求映射处理程序中,不仅返回相应的html视图ModelAndView()
@RequestMapping(value= "/registration.sahu",method = RequestMethod.GET)
public ModelAndView LoginPage(Model model) {
RegisterDetails perDetails = new RegisterDetails();
model.addAttribute("perDetailsForm", perDetails);
return new ModelAndview(model,"correspondingHtmlView");
}
其次,您应该更改您的POST
请求,以便它可以处理表单提交。添加Modelattribute
到您的输入参数,它将html表单绑定到perDetails
对象。
@RequestMapping("/registerDetails.sahu")
public ModelAndView registerDetails(@ModelAttribute("perDetailsForm") RegisterDetailsperDetails perDetails) {
registerServiceIfc.registerPerson(perDetails);
return new ModelAndView("viewname");
}
第三个也是最后一个是将您的表单从干净的html更改为spring表单。还添加spring taglibs!
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags"%>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>
<form:form method="post" modelAttribute="perDetailsForm" action="actionUrl">
<form:input path="property" type="text" /> <!-- bind to perDetail.property-->
</form:form>
这是一个很好的教程。
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