Spring+MongoDB实现登录注册功能

 <beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xmlns:context="http://www.springframework.org/schema/context"    xmlns:mongo="http://www.springframework.org/schema/data/mongo"    xsi:schemaLocation="http://www.springframework.org/schema/context     http://www.springframework.org/schema/context/spring-context-3.0.xsd     http://www.springframework.org/schema/data/mongo     http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd     http://www.springframework.org/schema/beans     http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">    <!-- 开启自动注入，进行包扫描 -->  <context:component-scan base-package="com" />  <mongo:mongo host="127.0.0.1" port="27017"/>     <!-- 配置MongoTemplate-->  <bean id="mongoTemplate" class="org.springframework.data.document.mongodb.MongoTemplate">    <constructor-arg ref="mongo"/>   <!-- 指定数据库名字-->   <constructor-arg name="databaseName" value="data1"/>    </bean>     <!-- 映射转换器，扫描back-package目录下的文件，根据注释，把它们作为mongodb的一个collection的映射 -->   <mongo:mapping-converter base-package="com.model" />     <!--普通注入-->   <bean id="userDaoImpl" class="com.userdaoimpl.UserDaoImpl">    <property name="mongoTemplate" ref="mongoTemplate"></property>   </bean>      <context:annotation-config />     <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" /> <!-- 配置视图解析器，将ModelAndView及字符串解析为具体的页面 --> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/" /> <property name="suffix" value=".jsp" /> </bean>   </beans> 

<?xml version="1.0" encoding="UTF-8"?><web-app 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></display-name>  <welcome-file-list> <welcome-file>login.jsp</welcome-file> </welcome-file-list>  <servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- 统一字符编码 --> <filter> <filter-name>encoding</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> </filter>  <filter-mapping> <filter-name>encoding</filter-name> <url-pattern>*.do</url-pattern> </filter-mapping></web-app> 

package com.model;import org.springframework.data.annotation.Id;import org.springframework.data.document.mongodb.mapping.Document;@Document(collection = "p3") public class User { @Id String name; String password; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; }   } 

 package com.userdao;import com.model.User;public interface UserDao { public void insert(User user); public boolean find(String name,String password); public void save(User user);  } 

package com.userdaoimpl;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.data.document.mongodb.MongoTemplate;import org.springframework.data.document.mongodb.query.Criteria;import org.springframework.data.document.mongodb.query.Query;import com.model.User;import com.userdao.UserDao;public class UserDaoImpl implements UserDao{  @Autowired MongoTemplate mongoTemplate;  @Override public void insert(User user) { getMongoTemplate().insert(user);  }    @Override public boolean find(String name, String password) { Criteria criteria=Criteria.where("name").is(name).and("password").in(password); User user = getMongoTemplate().findOne(new Query(criteria), User.class); if (user==null) { return false; } return true; } @Override public void save(User user) { getMongoTemplate().save(user);  } public MongoTemplate getMongoTemplate() { return mongoTemplate; } public void setMongoTemplate(MongoTemplate mongoTemplate) { this.mongoTemplate = mongoTemplate; }   } 

package com.controller;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;import com.userdaoimpl.UserDaoImpl;@Controllerpublic class LoginController { @Autowired UserDaoImpl userDaoImpl;   @RequestMapping("/login") public String login(String name,String password,Model model) { boolean rs = userDaoImpl.find(name, password); if (rs==true) { return "index"; } return "erro";  } public UserDaoImpl getUserDaoImpl() { return userDaoImpl; } public void setUserDaoImpl(UserDaoImpl userDaoImpl) { this.userDaoImpl = userDaoImpl; }} 

package com.controller;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;import com.model.User;import com.userdaoimpl.UserDaoImpl;@Controllerpublic class RegisterController { @Autowired  UserDaoImpl userDaoImpl; @RequestMapping("/register") public String register(String name,String password,Model model) { User user = new User(); user.setName(name); user.setPassword(password); userDaoImpl.save(user); return "login"; } public UserDaoImpl getUserDaoImpl() { return userDaoImpl; } public void setUserDaoImpl(UserDaoImpl userDaoImpl) { this.userDaoImpl = userDaoImpl; }   }