springMVC+mongodb整合(morphia)

spring版本4.1.6+morphia版本0.11

web.xml配置

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"version="3.0"><display-name>Archetype Created Web Application</display-name><context-param><param-name>contextConfigLocation</param-name><param-value>classpath:spring-morphia.xml</param-value></context-param><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><listener><listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class></listener><!-- 当hibernate+spring配合使用的时候，如果设置了lazy=true,那么在读取数据的时候，当读取了父数据后， hibernate会自动关闭session，这样，当要使用子数据的时候，系统会抛出lazyinit的错误， 这时就需要使用spring提供的 OpenSessionInViewFilter,OpenSessionInViewFilter主要是保持Session状态 知道request将全部页面发送到客户端，这样就可以解决延迟加载带来的问题 --><filter><filter-name>openSessionInViewFilter</filter-name><filter-class>org.springframework.orm.hibernate4.support.OpenSessionInViewFilter</filter-class><init-param><param-name>singleSession</param-name><param-value>true</param-value></init-param></filter><filter-mapping><filter-name>openSessionInViewFilter</filter-name><url-pattern>*.do</url-pattern></filter-mapping><filter><filter-name>encodingFilter</filter-name><filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class><async-supported>true</async-supported><init-param><param-name>encoding</param-name><param-value>UTF-8</param-value></init-param><init-param><param-name>forceEncoding</param-name><param-value>true</param-value></init-param></filter><filter-mapping><filter-name>encodingFilter</filter-name><url-pattern>/*</url-pattern></filter-mapping><servlet><servlet-name>SpringMVC</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value>classpath:spring-mvc.xml</param-value></init-param><load-on-startup>1</load-on-startup><async-supported>true</async-supported></servlet><servlet-mapping><servlet-name>SpringMVC</servlet-name><url-pattern>/</url-pattern></servlet-mapping><welcome-file-list><welcome-file>/index.jsp</welcome-file></welcome-file-list></web-app>

log4j.properties 配置

#定义LOG输出级别log4j.rootLogger=INFO,Console,File#定义日志输出目的地为控制台log4j.appender.Console=org.apache.log4j.ConsoleAppenderlog4j.appender.Console.Target=System.out#可以灵活地指定日志输出格式，下面一行是指定具体的格式log4j.appender.Console.layout = org.apache.log4j.PatternLayoutlog4j.appender.Console.layout.ConversionPattern=[%c] - %m%n#文件大小到达指定尺寸的时候产生一个新的文件log4j.appender.File = org.apache.log4j.RollingFileAppender#指定输出目录log4j.appender.File.File = logs/ssm.log#定义文件最大大小log4j.appender.File.MaxFileSize = 10MB# 输出所以日志，如果换成DEBUG表示输出DEBUG以上级别日志log4j.appender.File.Threshold = ALLlog4j.appender.File.layout = org.apache.log4j.PatternLayoutlog4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n

spring-mongo.properties

##mongo configmongo.server.host=localhostmongo.server.port=27017mongo.server.connectionsperHost=20mongo.server.threadsAllowedToBlockForConnectionMultiplier=10mongo.server.dbName=usermongo.server.user=rootmongo.server.pwd=root

spring-morphia.xml

<?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:context="http://www.springframework.org/schema/context"xmlns:aop="http://www.springframework.org/schema/aop" xmlns:util="http://www.springframework.org/schema/util"xmlns:cache="http://www.springframework.org/schema/cache" xmlns:jee="http://www.springframework.org/schema/jee"xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans                     http://www.springframework.org/schema/beans/spring-beans-4.0.xsd                     http://www.springframework.org/schema/context                     http://www.springframework.org/schema/context/spring-context-4.0.xsd                     http://www.springframework.org/schema/aop                     http://www.springframework.org/schema/aop/spring-aop-4.0.xsd                     http://www.springframework.org/schema/util                     http://www.springframework.org/schema/util/spring-util-4.0.xsd                     http://www.springframework.org/schema/cache                     http://www.springframework.org/schema/cache/spring-cache-4.0.xsd                     http://www.springframework.org/schema/jee                     http://www.springframework.org/schema/jee/spring-jee-4.0.xsd                     http://www.springframework.org/schema/tx                     http://www.springframework.org/schema/tx/spring-tx-4.0.xsd"><!-- ：所有类进行扫描，以完成Bean创建和自动依赖注入的功能 --><context:component-scan base-package="cn.yc" /><!-- ：启动Spring MVC的注解功能，完成请求和注解POJO的映射 --><beanclass="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter" /><!-- 引入配置文件 --><bean id="propertyConfigurer"class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"><property name="location" value="classpath:spring-jdbc.properties" /></bean><!-- <context:property-placeholder location="classpath:spring-mongo.properties" /> --><!-- 使用工厂创建mongo实例 --><bean id="mongoClient" class="cn.yc.comm.config.MongoClientFactoryBean"><!-- 设定服务器列表，默认为localhost:27017 --><property name="serverStrings"><array><value>127.0.0.1:27017</value></array></property></bean><!-- 使用工厂创建morphia实例，同时完成类映射操作 --><bean id="morphia" class="cn.yc.comm.config.MorphiaFactoryBean"><!-- 指定要扫描的POJO包路径 --><property name="mapPackages"><array><value>cn.yc.comm.bean</value></array></property><!-- 指定要映射的类 --><!-- <property name="mapClasses"> <array> <value>me.watchzerg.test.morphia.pojo.Hotel</value> <value>me.watchzerg.test.morphia.pojo.Address</value> </array> </property> --><!-- 扫描包时是否忽略不可用的类，默认为false --><!-- <property name="ignoreInvalidClasses" value="false"/> --></bean><!-- 使用工厂创建datastore，同时完成index和caps的确认操作 --><bean id="datastore" class="cn.yc.comm.config.DatastoreFactoryBean"><property name="morphia" ref="morphia" /><property name="mongoClient" ref="mongoClient" /><!-- collection的名称 --><property name="dbName" value="${mongo.server.dbName}" /><!-- 用户名和密码可以为空 --><property name="username" value="${mongo.server.user" /><property name="password" value="${mongo.server.pwd" /><!-- 是否进行index和caps的确认操作，默认为flase --><property name="toEnsureIndexes" value="true" /><property name="toEnsureCaps" value="true" /></bean><!-- 全局配置 --><bean id="config" class="cn.yicha.config.Config"></bean><!-- ===============以下是具体DAO的实现===================== --><!-- 测试 --><bean id="hotelDao" class="cn.yc.comm.dao.HotelDao"><constructor-arg ref="datastore" /></bean></beans>

spring-mvc.xml 配置

<?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:mvc="http://www.springframework.org/schema/mvc"xsi:schemaLocation="http://www.springframework.org/schema/beans                          http://www.springframework.org/schema/beans/spring-beans-4.0.xsd                          http://www.springframework.org/schema/context                          http://www.springframework.org/schema/context/spring-context-4.0.xsd                          http://www.springframework.org/schema/mvc                          http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"><!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 --><context:component-scan base-package="cn.yc.comm.action" /><!--避免IE执行AJAX时，返回JSON出现下载文件 --> <bean id="mappingJackson2HttpMessageConverter"class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"><property name="supportedMediaTypes"><list><value>text/html;charset=UTF-8</value><value>text/json;charset=UTF-8</value>                  <value>application/json;charset=UTF-8</value>  </list></property></bean><!-- 启动SpringMVC的注解功能，完成请求和注解POJO的映射 --><beanclass="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"><property name="messageConverters"><list><ref bean="mappingJackson2HttpMessageConverter" /><!-- JSON转换器 --></list></property></bean> <!-- String 字符转转码 json 数据配置 --><mvc:annotation-driven><mvc:message-converters register-defaults="true"><bean class="org.springframework.http.converter.StringHttpMessageConverter"><constructor-arg value="UTF-8" /></bean></mvc:message-converters></mvc:annotation-driven><!-- 对静态资源文件的访问 方案一 （二选一） --><mvc:default-servlet-handler /><!-- 对静态资源文件的访问 方案二 （二选一） --><!-- <mvc:resources mapping="/images/**" location="/images/" cache-period="31556926"/> <mvc:resources mapping="/js/**" location="/js/" cache-period="31556926"/> <mvc:resources mapping="/css/**" location="/css/" cache-period="31556926"/> --><!-- 定义跳转的文件的前后缀 ，视图模式配置 --><beanclass="org.springframework.web.servlet.view.InternalResourceViewResolver"><!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀，变成一个 可用的url地址 --><property name="prefix" value="/" /><property name="suffix" value=".jsp" /></bean><!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件中也不必引入上传组件包 --><bean id="multipartResolver"class="org.springframework.web.multipart.commons.CommonsMultipartResolver"><!-- 默认编码 --><property name="defaultEncoding" value="utf-8" /><!-- 文件大小最大值 --><property name="maxUploadSize" value="10485760000" /><!-- 内存中的最大值 --><property name="maxInMemorySize" value="40960" /></bean></beans>

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"><modelVersion>4.0.0</modelVersion><groupId>cn.yc</groupId><artifactId>mongo</artifactId><packaging>war</packaging><version>0.0.1-SNAPSHOT</version><name>spring-mongo</name><url>http://maven.apache.org</url><!-- 配置文件 --><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><!-- junit版本 --><junit.version>4.11</junit.version><spring.version>4.1.6.RELEASE</spring.version><!-- mongo.driver版本 --><mongo.version>2.12.5</mongo.version><!-- mongodb框架版本 --><morphia.version>0.110</morphia.version><!-- dom4j版本 --><dom4j.version>1.6.1</dom4j.version><!-- jsp版本 --><jsp.version>2.0</jsp.version><!-- servlet版本 --><servlet.version>3.1.0</servlet.version><!-- slf4j版本 --><slf4j.version>1.7.5</slf4j.version><!-- log4j版本 --><log4j.version>1.2.17</log4j.version><!-- freemarker版本 --><freemarker.version>2.3.20</freemarker.version><!-- jackson版本 --><jackson.version>2.5.1</jackson.version></properties><dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>${junit.version}</version><scope>test</scope></dependency><!-- apache-commons start --><dependency><groupId>commons-codec</groupId><artifactId>commons-codec</artifactId><version>1.10</version></dependency><dependency><groupId>org.apache.commons</groupId><artifactId>commons-exec</artifactId><version>1.3</version></dependency><dependency><groupId>commons-fileupload</groupId><artifactId>commons-fileupload</artifactId><version>1.3.1</version></dependency><dependency><groupId>commons-io</groupId><artifactId>commons-io</artifactId><version>2.4</version></dependency><dependency><groupId>org.apache.commons</groupId><artifactId>commons-lang3</artifactId><version>3.3.2</version></dependency><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId><version>4.3.6</version></dependency><dependency><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId><version>1.2</version></dependency><dependency><groupId>org.apache.commons</groupId><artifactId>commons-pool2</artifactId><version>2.3</version></dependency><dependency><groupId>commons-beanutils</groupId><artifactId>commons-beanutils</artifactId><version>1.9.2</version></dependency><!-- apache-commons end --><!-- spring依赖开始 --><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-beans</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-web</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-aop</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-tx</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-orm</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jms</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-expression</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-aspects</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-oxm</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc-portlet</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-instrument</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-messaging</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-instrument-tomcat</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-websocket</artifactId><version>${spring.version}</version></dependency><!-- spring依赖结束 --><dependency><groupId>org.springframework.data</groupId><artifactId>spring-data-mongodb</artifactId><version>1.6.2.RELEASE</version></dependency><dependency><groupId>org.mongodb</groupId><artifactId>mongo-java-driver</artifactId><version>${mongo.version}</version></dependency><dependency><groupId>org.mongodb.morphia</groupId><artifactId>morphia</artifactId><version>${morphia.version}</version></dependency><dependency><groupId>dom4j</groupId><artifactId>dom4j</artifactId><version>${dom4j.version}</version></dependency><dependency><groupId>javax.servlet</groupId><artifactId>jsp-api</artifactId><version>${jsp.version}</version></dependency><dependency><groupId>javax.servlet</groupId><artifactId>javax.servlet-api</artifactId><version>${servlet.version}</version></dependency><!-- lsf4j,log4j依赖开始 --><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>${slf4j.version}</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>${slf4j.version}</version></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>${log4j.version}</version></dependency><!-- lsf4j,log4j依赖结束 --><!-- freemarker依赖开始 --><dependency><groupId>org.freemarker</groupId><artifactId>freemarker</artifactId><version>${freemarker.version}</version></dependency><!-- freemarker依赖结束 --><!-- jackson依赖开始 --><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-databind</artifactId><version>${jackson.version}</version></dependency><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-annotations</artifactId><version>${jackson.version}</version></dependency><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-core</artifactId><version>${jackson.version}</version></dependency><dependency><groupId>com.fasterxml.jackson.dataformat</groupId><artifactId>jackson-dataformat-xml</artifactId><version>${jackson.version}</version></dependency><!-- jackson依赖结束 --></dependencies><build><finalName>mongo</finalName></build></project>

MongoClient 工厂类

public class MongoClientFactoryBean  extends AbstractFactoryBean<Mongo>{ // 表示服务器列表(主从复制或者分片)的字符串数组     private String[] serverStrings;     // mongoDB配置对象 使用默认配置     private MongoClientOptions mongoClientOptions=new MongoClientOptions.Builder().build();     @Override     public Class<?> getObjectType() {         return Mongo.class;     }      public String[] getServerStrings() {return serverStrings;}public void setServerStrings(String[] serverStrings) {this.serverStrings = serverStrings;}@Override     protected MongoClient createInstance() throws Exception {     MongoClient mongoClient =null;     if (null!=mongoClientOptions) {      mongoClient = new MongoClient(getServerList(), mongoClientOptions);}else { mongoClient = new MongoClient(getServerList());}         return mongoClient;     }                   /**      * 根据服务器字符串列表，解析出服务器对象列表      * @Title: getServerList      *       * @return      * @throws Exception      */     private List<ServerAddress> getServerList() throws Exception {         List<ServerAddress> serverList = new ArrayList<ServerAddress>();         try {             for (String serverString : serverStrings) {                String[] temp = serverString.split(":");                String host = temp[0];                if (temp.length > 2) {                     throw new IllegalArgumentException(                             "Invalid server address string: " + serverString);                 }                 if (temp.length == 2) {                     serverList.add(new ServerAddress(host, Integer                             .parseInt(temp[1])));                 } else {                     serverList.add(new ServerAddress(host));                 }             }             return serverList;         } catch (Exception e) {            throw new Exception(                    "Error while converting serverString to ServerAddressList",                     e);         }    } }

MorphiaFactoryBean  返回 morphia实例

public class MorphiaFactoryBean extends AbstractFactoryBean<Morphia>{/** * 3 * 要扫描并映射的包 4 */private String[] mapPackages;/** * 要映射的类 */private String[] mapClasses;/** * 扫描包时，是否忽略不映射的类 这里按照Morphia的原始定义，默认设为false */private boolean ignoreInvalidClasses;@Override     protected Morphia createInstance() throws Exception {         Morphia m = new Morphia();         if (mapPackages != null) {             for (String packageName : mapPackages) {                 m.mapPackage(packageName, ignoreInvalidClasses);             }         }         if (mapClasses != null) {               for (String entityClass : mapClasses) {                 m.map(Class.forName(entityClass));             }         }         return m;     }      public String[] getMapPackages() {return mapPackages;}public void setMapPackages(String[] mapPackages) {this.mapPackages = mapPackages;}public String[] getMapClasses() {return mapClasses;}public void setMapClasses(String[] mapClasses) {this.mapClasses = mapClasses;}public boolean isIgnoreInvalidClasses() {return ignoreInvalidClasses;}public void setIgnoreInvalidClasses(boolean ignoreInvalidClasses) {this.ignoreInvalidClasses = ignoreInvalidClasses;}@Override     public Class<?> getObjectType() {         return Morphia.class;     }}

DatastoreFactoryBean

public class DatastoreFactoryBean extends AbstractFactoryBean<Datastore> {private Morphia morphia; // morphia实例，最好是单例private MongoClient mongoClient; // mongoClient实例，最好是单例private String dbName; // 数据库名private String username; // 用户名，可为空private String password; // 密码，可为空private boolean toEnsureIndexes = false; // 是否确认索引存在，默认falseprivate boolean toEnsureCaps = false; // 是否确认caps存在，默认false   @Override        protected Datastore createInstance() throws Exception {           DB db = mongoClient.getDB(dbName);      /*     if (db.isAuthenticated()) {db.authenticate(username, password.toCharArray());}*/           Datastore  ds = morphia.createDatastore(mongoClient, dbName);            if(toEnsureIndexes){                ds.ensureIndexes();            }            if(toEnsureCaps){                ds.ensureCaps();            }            return ds;        }            public Morphia getMorphia() {return morphia;}public void setMorphia(Morphia morphia) {this.morphia = morphia;}public MongoClient getMongoClient() {return mongoClient;}public void setMongoClient(MongoClient mongoClient) {this.mongoClient = mongoClient;}public String getDbName() {return dbName;}public void setDbName(String dbName) {this.dbName = dbName;}public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public boolean isToEnsureIndexes() {return toEnsureIndexes;}public void setToEnsureIndexes(boolean toEnsureIndexes) {this.toEnsureIndexes = toEnsureIndexes;}public boolean isToEnsureCaps() {return toEnsureCaps;}public void setToEnsureCaps(boolean toEnsureCaps) {this.toEnsureCaps = toEnsureCaps;}@Override        public Class<?> getObjectType() {            return Datastore.class;        }            @Override        public void afterPropertiesSet() throws Exception {            super.afterPropertiesSet();            if (mongoClient == null) {                throw new IllegalStateException("mongoClient is not set");            }            if (morphia == null) {                throw new IllegalStateException("morphia is not set");            }        }}

简单测试

po对象

@Entity(value="hotel",noClassnameStored=true)@Indexes( @Index("name, stars") )  public class Hotel {@Id @JsonIgnoreprivate ObjectId id;    private String name;     private int stars;          @Embedded     private Address address;            public ObjectId getId() {return id;}public void setId(ObjectId id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public int getStars() {return stars;}public void setStars(int stars) {this.stars = stars;}public Address getAddress() {return address;}public void setAddress(Address address) {this.address = address;} }

@Embedded public class Address {     private String street;    private String city;     private String postCode;     private String country;public String getStreet() {return street;}public void setStreet(String street) {this.street = street;}public String getCity() {return city;}public void setCity(String city) {this.city = city;}public String getPostCode() {return postCode;}public void setPostCode(String postCode) {this.postCode = postCode;}public String getCountry() {return country;}public void setCountry(String country) {this.country = country;} }

dao层 在xml重配置注入Datastore 

public class HotelDao extends BasicDAO<Hotel, ObjectId>  {protected HotelDao(Datastore ds) {super(ds);}}

service层

@Servicepublic class HotelService {@Autowiredprivate HotelDao hotelDao;public int save(Hotel hotel) {Key<Hotel> key = hotelDao.save(hotel);if (null != key) {return 1;}return 0;}public List<Hotel> getHotels() {Query<Hotel> query = this.hotelDao.createQuery().filter("address.city", "北京"); List<Hotel> hotels = this.hotelDao.find(query).asList();return hotels;}}

controller

@Controller@RequestMapping("/hotel")@Scope("prototype")public class HotelAction {@Autowiredprivate HotelService hotelService;@RequestMapping(value = "/save", method = RequestMethod.POST)@ResponseBodypublic Map<String, Object> save(Hotel hotel) {Map<String, Object> result = new HashMap<String, Object>();int save = hotelService.save(hotel);result.put("status", save);return result;}@RequestMapping(value = "/getHotels", method = RequestMethod.GET)@ResponseBodypublic List<Hotel> getHotels() {Map<String, Object> result = new HashMap<String, Object>(); List<Hotel> hotels = hotelService.getHotels();result.put("data", hotels);return hotels;}}