SpringMVC中整合了JSON、XML的視圖，可以通過這些視圖完成Java對象到XML、JSON的轉(zhuǎn)換。轉(zhuǎn)換XML提供了MarshallingView，開發(fā)者只需用注入相應的marshaller、和屬性配置，即可自動完成Java的Model對象中的數(shù)據(jù)到XML的編組。

Email：hoojo_@126.com

Blog：http://blog.csdn.net/IBM_hoojo

http://hoojo.cnblogs.com/

一、?準備工作

1、 本次程序會涉及到Jackson、xStream、Jibx、Jaxb2、castor等技術(shù)，如果你對這些技術(shù)還不是很了解。建議閱讀：http://www.cnblogs.com/hoojo/archive/2011/04/27/2030264.html

這篇文章中涉及到的內(nèi)容應該對你有不少幫助。

2、 jar包下載

spring各版本jar下載地址：http://ebr.springsource.com/repository/app/library/detail?name=org.springframework.spring

相關(guān)的依賴包也可以在這里找到：http://ebr.springsource.com/repository/app/library

3、 至少需要以下jar包

4、 當前工程的web.xml配置

<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <-- 配置Spring核心控制器 --> <servlet> <servlet-name>dispatcher</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/dispatcher.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcher</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> <-- 解決工程編碼過濾器 --> <filter> <filter-name>characterEncodingFilter</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>characterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>

5、 WEB-INF中的dispatcher.xml配置

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:util="http://www.springframework.org/schema/util" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-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/util http://www.springframework.org/schema/util/spring-util-3.0.xsd"> <-- 注解探測器 --> <context:component-scan base-package="com.hoo.controller"/> <-- 視圖解析器，根據(jù)視圖的名稱new ModelAndView(name)，在配置文件查找對應的bean配置 --> <bean class="org.springframework.web.servlet.view.BeanNameViewResolver"> <property name="order" value="1"/> </bean> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/> </bean> </beans>

啟動后，可以看到index.jsp 沒有出現(xiàn)異常或錯誤。那么當前SpringMVC的配置就成功了。

二、?利用Jaxb2編組XML

1、 Jaxb2可以完成XML和Java的相互轉(zhuǎn)換，在WebService中用得較多。前面也介紹過Jaxb2 的用法。

在線博文：

For cnblogs：http://www.cnblogs.com/hoojo/archive/2011/04/26/2029011.html

For csdn：http://blog.csdn.net/IBM_hoojo/archive/2011/04/26/6363491.aspx

2、 首先在dispatcher.xml中配置Jaxb2的marshaller的視圖，配置如下：

<-- xml視圖,Jaxb2Marshaller,需要配置對象和對象添加Annotation xml注解，不需要添加額外的jar包 --> <bean name="jaxb2MarshallingView" class="org.springframework.web.servlet.view.xml.MarshallingView"> <constructor-arg> <bean class="org.springframework.oxm.jaxb.Jaxb2Marshaller"> <property name="classesToBeBound"> <array> <value>com.hoo.entity.User</value> <value>com.hoo.entity.AccountBean</value> <value>com.hoo.entity.MapBean</value> <value>com.hoo.entity.ListBean</value> </array> </property> </bean> </constructor-arg> </bean>

Jaxb2的jar在jdk中已經(jīng)包含，所以不需要添加額外的jar包。詳細信息你可以參考1中的博文。上面的jaxb2MarshallingView視圖的class是MarshallingView，它有一個構(gòu)造器需要傳遞一個Marshaller。Marshaller主要完成編組，即將Java對象轉(zhuǎn)換成XML的這么一個東東。我們在這個構(gòu)造器中注入了Jaxb2Marshaller這個類，這個bean有一個classesToBeBound屬性，這個屬性是一個數(shù)組。需要將即將轉(zhuǎn)換成XML的Java對象配置在這里。而且這些對象需要進行Annotation注解。

3、 創(chuàng)建Jaxb2MarshallingViewController，完成Java對象到XML的轉(zhuǎn)換

單個JavaBean的轉(zhuǎn)換，代碼如下：

package com.hoo.controller; ? import java.util.ArrayList; import java.util.Date; import java.util.List; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import com.hoo.entity.AccountBean; import com.hoo.entity.Brithday; import com.hoo.entity.DifferBean; import com.hoo.entity.ListBean; import com.hoo.entity.MoreBean; import com.hoo.entity.User; ? /** * <b>function:</b>Jaxb2MarshallingView 視圖，利用Jaxb2進行Java對象到XML的轉(zhuǎn)換技術(shù) * @author hoojo * @createDate 2011-4-27 下午03:20:23 * @file Jaxb2MarshallingViewController.java * @package com.hoo.controller * @project SpringMVC4View * @blog http://blog.csdn.net/IBM_hoojo * @email hoojo_@126.com * @version 1.0 */ @Controller @RequestMapping("/jaxb2/view") public class Jaxb2MarshallingViewController { /* * MarshallingView Jaxb2Marshaller 需要配置轉(zhuǎn)換成xml的java對象的Annotation */ @RequestMapping("/doXMLJaxb2") public ModelAndView doXMLJaxb2View() { System.out.println("#################ViewController doXMLJaxb2View##################"); ModelAndView mav = new ModelAndView("jaxb2MarshallingView"); AccountBean bean = new AccountBean(); bean.setAddress("address"); bean.setEmail("email"); bean.setId(1); bean.setName("haha"); Brithday day = new Brithday(); day.setBrithday("2010-11-22"); bean.setBrithday(day); mav.addObject(bean); return mav; } }

上面的代碼的ModelAndView配置了jaxb2MarshallingView這個視圖，就表示結(jié)果集會通過這個視圖進行編組后顯示。上面需要轉(zhuǎn)換的AccountBean和Birthday對象，這些對象需要配置annotation，前面已經(jīng)講到annotation對JavaBean轉(zhuǎn)換XML的作用。我們來看看AccountBean對象代碼：

package com.hoo.entity; ? import javax.xml.bind.annotation.XmlElement; import javax.xml.bind.annotation.XmlRootElement; ? @XmlRootElement(name = "account") public class AccountBean { private int id; private String name; private String email; private String address; private Brithday brithday; @XmlElement public Brithday getBrithday() { return brithday; } public void setBrithday(Brithday brithday) { this.brithday = brithday; } @XmlElement public int getId() { return id; } public void setId(int id) { this.id = id; } @XmlElement public String getName() { return name; } public void setName(String name) { this.name = name; } @XmlElement public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } @XmlElement public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } @Override public String toString() { return this.name + "#" + this.id + "#" + this.address + "#" + this.brithday + "#" + this.email; } }

在getter方法都有部分注解，如果你想了解更多的jaxb2的相關(guān)技術(shù)，參考：http://www.cnblogs.com/hoojo/archive/2011/04/26/2029011.html

Brithday

package com.hoo.entity; ? public class Brithday { private String brithday; public Brithday() {} public Brithday(String brithday) { this.brithday = brithday; } public String getBrithday() { return brithday; } ? public void setBrithday(String brithday) { this.brithday = brithday; } }

Brithday是AccountBean中的一個屬性，在AccountBean中已經(jīng)注解過。這里就不需要進行注解配置。

通過瀏覽器請求：http://localhost:8080/SpringMVC4View/jaxb2/view/doXMLJaxb2.do

結(jié)果如下：

<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <account><address>address</address><brithday><brithday>2010-11-22</brithday></brithday> <email>email</email><id>1</id><name>haha</name></account>

4、 轉(zhuǎn)換帶List屬性的JavaEntity

/** * <b>function:</b>轉(zhuǎn)換帶有List屬性的JavaBean * @author hoojo * @createDate 2011-4-27 下午05:32:22 * @return */ @RequestMapping("/doListXMLJaxb2") public ModelAndView doListXMLJaxb2View() { System.out.println("#################ViewController doListXMLJaxb2View##################"); ModelAndView mav = new ModelAndView("jaxb2MarshallingView"); List<Object> beans = new ArrayList<Object>(); for (int i = 0; i < 3; i++) { AccountBean bean = new AccountBean(); bean.setAddress("address#" + i); bean.setEmail("email" + i + "@12" + i + ".com"); bean.setId(1 + i); bean.setName("haha#" + i); Brithday day = new Brithday(); day.setBrithday("2010-11-2" + i); bean.setBrithday(day); beans.add(bean); User user = new User(); user.setAddress("china GuangZhou# " + i); user.setAge(23 + i); user.setBrithday(new Date()); user.setName("jack#" + i); user.setSex(Boolean.parseBoolean(i + "")); beans.add(user); } ListBean list = new ListBean(); list.setList(beans); mav.addObject(list); return mav; }

ListBean注解過的代碼

package com.hoo.entity; ? import java.util.List; import javax.xml.bind.annotation.XmlElement; import javax.xml.bind.annotation.XmlElements; import javax.xml.bind.annotation.XmlRootElement; ? @SuppressWarnings("unchecked") @XmlRootElement public class ListBean { private String name; private List list; @XmlElements({ @XmlElement(name = "user", type = User.class), @XmlElement(name = "account", type = AccountBean.class), }) public List getList() { return list; } ? public void setList(List list) { this.list = list; } ? public String getName() { return name; } ? public void setName(String name) { this.name = name; } }

通過上面的注解可以看出List中只能存儲User、AccountBean對象，關(guān)于User對象的代碼和AccountBean對象的是一樣的，只是類名不同而已。讀者可以自己添加。在WebBrowser中請求：http://localhost:8080/SpringMVC4View/jaxb2/view/doListXMLJaxb2.do

結(jié)果如下：

<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <listBean> <account><address>address#0</address><brithday><brithday>2010-11-20</brithday></brithday> <email>email0@120.com</email><id>1</id><name>haha#0</name></account> <user><address>china GuangZhou# 0</address><age>23</age> <brithday>2011-04-27T17:02:38.028+08:00</brithday><name>jack#0</name><sex>false</sex></user> <account><address>address#1</address><brithday><brithday>2010-11-21</brithday></brithday> <email>email1@121.com</email><id>2</id><name>haha#1</name></account> <user><address>china GuangZhou# 1</address><age>24</age> <brithday>2011-04-27T17:02:38.028+08:00</brithday><name>jack#1</name><sex>false</sex></user> <account><address>address#2</address><brithday><brithday>2010-11-22</brithday></brithday> <email>email2@122.com</email><id>3</id><name>haha#2</name></account> <user><address>china GuangZhou# 2</address><age>25</age> <brithday>2011-04-27T17:02:38.028+08:00</brithday><name>jack#2</name><sex>false</sex></user> </listBean>

5、 轉(zhuǎn)換帶有Map屬性的JavaBean，Jaxb2轉(zhuǎn)換Map有點復雜，先看看代碼：

/** * <b>function:</b>轉(zhuǎn)換帶有Map屬性的JavaBean * @author hoojo * @createDate 2011-4-27 下午05:32:42 * @return */ @RequestMapping("/doMapXMLJaxb2") public ModelAndView doMapXMLJaxb2View() { System.out.println("#################ViewController doMapXMLJaxb2View##################"); ModelAndView mav = new ModelAndView("jaxb2MarshallingView"); MapBean mapBean = new MapBean(); HashMap<String, AccountBean> map = new HashMap<String, AccountBean>(); AccountBean bean = new AccountBean(); bean.setAddress("北京"); bean.setEmail("email"); bean.setId(1); bean.setName("jack"); Brithday day = new Brithday(); day.setBrithday("2010-11-22"); bean.setBrithday(day); map.put("NO1", bean); bean = new AccountBean(); bean.setAddress("china"); bean.setEmail("tom@125.com"); bean.setId(2); bean.setName("tom"); day = new Brithday("2011-11-22"); bean.setBrithday(day); map.put("NO2", bean); mapBean.setMap(map); mav.addObject(mapBean); return mav; }

首先看看MapBean的代碼，代碼很簡單就一個Map的屬性。

package com.hoo.entity; ? import java.util.HashMap; import javax.xml.bind.annotation.XmlRootElement; import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter; import com.hoo.util.MapAdapter; ? @XmlRootElement public class MapBean { private HashMap<String, AccountBean> map; @XmlJavaTypeAdapter(MapAdapter.class) public HashMap<String, AccountBean> getMap() { return map; } public void setMap(HashMap<String, AccountBean> map) { this.map = map; } }

上面的代碼的getMap方法設(shè)置了XmlJavaTypeAdapter這個注解，注解里面的MapAdapter是我們自己實現(xiàn)的，而且還要構(gòu)建一個MapElements數(shù)組元素。主要是繼承XmlAdapter重寫里面的幾個方法完成的。

MapAdapter代碼

package com.hoo.util; ? import java.util.HashMap; import java.util.Map; import javax.xml.bind.annotation.adapters.XmlAdapter; import com.hoo.entity.AccountBean; ? /** * <b>function:</b>AccountBean 編組、解組的XmlAdapter * @author hoojo * @createDate 2011-4-25 下午05:03:18 * @file MyAdetper.java * @package com.hoo.util * @project WebHttpUtils * @blog http://blog.csdn.net/IBM_hoojo * @email hoojo_@126.com * @version 1.0 */ public class MapAdapter extends XmlAdapter<MapElements[], Map<String, AccountBean>> { public MapElements[] marshal(Map<String, AccountBean> arg0) throws Exception { MapElements[] mapElements = new MapElements[arg0.size()]; ? int i = 0; for (Map.Entry<String, AccountBean> entry : arg0.entrySet()) mapElements[i++] = new MapElements(entry.getKey(), entry.getValue()); ? return mapElements; } ? public Map<String, AccountBean> unmarshal(MapElements[] arg0) throws Exception { Map<String, AccountBean> r = new HashMap<String, AccountBean>(); for (MapElements mapelement : arg0) r.put(mapelement.key, mapelement.value); return r; } }

MapElements代碼

package com.hoo.util; ? import javax.xml.bind.annotation.XmlElement; import com.hoo.entity.AccountBean; ? /** * <b>function:</b> MapElements * @author hoojo * @createDate 2011-4-25 下午05:04:04 * @file MyElements.java * @package com.hoo.util * @project WebHttpUtils * @blog http://blog.csdn.net/IBM_hoojo * @email hoojo_@126.com * @version 1.0 */ public class MapElements { @XmlElement public String key; @XmlElement public AccountBean value; ? @SuppressWarnings("unused") private MapElements() { } // Required by JAXB ? public MapElements(String key, AccountBean value) { this.key = key; this.value = value; } }

在瀏覽器中請求：http://localhost:8080/SpringMVC4View/jaxb2/view/doMapXMLJaxb2.do

結(jié)果如下：

<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <mapBean><map><item><key>NO2</key><value><address>china</address> <brithday><brithday>2011-11-22</brithday></brithday> <email>tom@125.com</email><id>2</id><name>tom</name></value></item> <item><key>NO1</key><value><address>北京</address><brithday><brithday>2010-11-22</brithday></brithday> <email>email</email><id>1</id><name>jack</name></value></item></map> </mapBean>

總結(jié)，如果你想將一些Java的基本類型轉(zhuǎn)換成XML。那么你得創(chuàng)建一個帶getter、setter方法的JavaBean。然后在Bean的getter方法進行相應的Annotation注解即可完成轉(zhuǎn)換。

?

三、?利用xStream轉(zhuǎn)換XML

1、 xStream可以輕易的將Java對象轉(zhuǎn)換成XML、JSON，Spring整合利用xStream轉(zhuǎn)換xml。需要添加xStream相關(guān)的xstream-1.3.1.jar包。 如果你對xStream不上很了解，你可以先閱讀這篇文章：

For csblogs：http://www.cnblogs.com/hoojo/archive/2011/04/22/2025197.html

For csdn：http://blog.csdn.net/IBM_hoojo/archive/2011/04/22/6342386.aspx

2、 然后在dispatcher.xml中添加如下配置

<-- xml視圖，XStreamMarshaller，可以轉(zhuǎn)換任何形式的java對象，需要添加xStream jar包 --> <bean name="xStreamMarshallingView" class="org.springframework.web.servlet.view.xml.MarshallingView"> <property name="marshaller"> <bean class="org.springframework.oxm.xstream.XStreamMarshaller"> <-- 啟用annotation --> <property name="autodetectAnnotations" value="true"/> <-- 類名別名 --> <property name="aliases"> <map> <-- Account這個類的別名就變成了myBeans，那么轉(zhuǎn)換后的xml中就是myBeans --> <entry key="myBeans" value="com.hoo.entity.Account"/> </map> </property> <-- 基本屬性別名 --> <property name="fieldAliases"> <map> <-- Account中的brithday這個屬性 --> <entry key="com.hoo.entity.Account.brithday" value="生日"/> </map> </property> </bean> </property> </bean>

上次配置的參數(shù)有注釋描述，還要沒有配置的參數(shù)。如：annotatedClass、annotatedClasses是當沒有配置啟用annotation的時候，可以用這2個屬性進行配置你指定的class啟用annotation注解。streamDriver是配置驅(qū)動用的，默認可以不要驅(qū)動，你可以配置DomDriver、JSON相關(guān)的驅(qū)動。encoding是設(shè)置編碼，關(guān)于XStreamMarshaller還要更多的參數(shù)配置和上面xStream 的博文中講解的一樣使用，只是通過配置，而博文中是直接在代碼中寫的。當然也可以通過annotation進行注解哦；如果你想了解更多xStream的用法，請你仔細閱讀：http://www.cnblogs.com/hoojo/archive/2011/04/22/2025197.html

3、 普通JavaBean轉(zhuǎn)換XML

package com.hoo.controller; ? import java.util.ArrayList; import java.util.Date; import java.util.HashMap; import java.util.List; import java.util.Map; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import com.hoo.entity.Account; import com.hoo.entity.AccountArray; import com.hoo.entity.AccountBean; import com.hoo.entity.Brithday; import com.hoo.entity.DifferBean; import com.hoo.entity.ListBean; import com.hoo.entity.MapBean; import com.hoo.entity.MoreBean; import com.hoo.entity.User; ? /** * <b>function:</b>Jaxb2MarshallingView 視圖，利用Jaxb2進行Java對象到XML的轉(zhuǎn)換技術(shù) * @author hoojo * @createDate 2011-4-27 下午03:20:23 * @file Jaxb2MarshallingViewController.java * @package com.hoo.controller * @project SpringMVC4View * @blog http://blog.csdn.net/IBM_hoojo * @email hoojo_@126.com * @version 1.0 */ @Controller @RequestMapping("/jaxb2/view") public class Jaxb2MarshallingViewController { /* * MarshallingView Jaxb2Marshaller 需要配置轉(zhuǎn)換成xml的java對象的Annotation */ @RequestMapping("/doXMLJaxb2") public ModelAndView doXMLJaxb2View() { System.out.println("#################ViewController doXMLJaxb2View##################"); ModelAndView mav = new ModelAndView("jaxb2MarshallingView"); AccountBean bean = new AccountBean(); bean.setAddress("address"); bean.setEmail("email"); bean.setId(1); bean.setName("haha"); Brithday day = new Brithday(); day.setBrithday("2010-11-22"); bean.setBrithday(day); mav.addObject(bean); return mav; } }

AccountBean上面的代碼已經(jīng)給出，這里就不重復了。值得說明的是xStream在ModelAndView中，直接用addObject方法添加時，有時候出現(xiàn)一些不是我們轉(zhuǎn)換的對象的信息，一般是BindingResult的xml信息。解決辦法就是設(shè)置addObject的key。Key設(shè)置為BindingResult.MODEL_KEY_PREFIX這樣就可以了，代碼上面已經(jīng)給出。

在瀏覽器中請求：http://localhost:8080/SpringMVC4View/xStream/view/doXMLXStream.do

結(jié)果如下：

<com.hoo.entity.AccountBean><id>1</id><name>haha</name><email>email</email><address>北京</address> <brithday><brithday>2010-11-22</brithday></brithday></com.hoo.entity.AccountBean>

4、 轉(zhuǎn)換對象數(shù)組

代碼如下：

/** * <b>function:</b>轉(zhuǎn)換對象數(shù)組 * @author hoojo * @createDate 2011-4-27 下午06:19:40 * @return */ @RequestMapping("/doMoreXMLXStream") public ModelAndView doMoreXMLXStreamView() { System.out.println("#################ViewController doMoreXMLXStreamView##################"); ModelAndView mav = new ModelAndView("xStreamMarshallingView"); Account[] accs = new Account[2]; Account bean = new Account(); bean.setAddress("北京"); bean.setEmail("email"); bean.setId(1); bean.setName("haha"); Brithday day = new Brithday(); day.setBrithday("2010-11-22"); bean.setBrithday(day); accs[0] = bean; bean = new Account(); bean.setAddress("上海"); bean.setEmail("email"); bean.setId(1); bean.setName("haha"); day = new Brithday(); day.setBrithday("2010-11-22"); bean.setBrithday(day); accs[1] = bean; mav.addObject(accs); return mav; }

在WebBrowser中請求http://localhost:8080/SpringMVC4View/xStream/view/doMoreXMLXStream.do

結(jié)果如下：

<myBeans-array><myBeans><id>1</id><name>haha</name><email>email</email> <address>北京</address><生日><brithday>2010-11-22</brithday></生日></myBeans> <myBeans><id>1</id><name>haha</name><email>email</email><address>上海</address> <生日><brithday>2010-11-22</brithday></生日></myBeans></myBeans-array>

結(jié)果中的myBeans、生日就是在dispatcher配置文件中重命名的對象屬性名稱。

5、 轉(zhuǎn)換Map集合

/** * <b>function:</b>轉(zhuǎn)換Map對象 * @author hoojo * @createDate 2011-4-27 下午06:19:48 * @return */ @RequestMapping("/doDifferXMLXStream") public ModelAndView doDifferXMLXStreamView() { System.out.println("#################ViewController doDifferXMLXStreamView##################"); ModelAndView mav = new ModelAndView("xStreamMarshallingView"); Account bean = new Account(); bean.setAddress("廣東"); bean.setEmail("email"); bean.setId(1); bean.setName("haha"); Brithday day = new Brithday(); day.setBrithday("2010-11-22"); bean.setBrithday(day); User user = new User(); user.setAddress("china GuangZhou"); user.setAge(23); user.setBrithday(new Date()); user.setName("jack"); user.setSex(true); Map<String, Object> map = new HashMap<String, Object>(); map.put("bean", bean); map.put("user", user); mav.addObject(map); return mav; }

在WebBrowser中請求http://localhost:8080/SpringMVC4View/xStream/view/doDifferXMLXStream.do

結(jié)果如下：

<map><entry> <string>bean</string><myBeans><id>1</id><name>haha</name><email>email</email> <address>廣東</address><生日><brithday>2010-11-22</brithday></生日></myBeans> </entry><entry><string>user</string><com.hoo.entity.User><name>jack</name><age>23</age><sex>true</sex> <address>china GuangZhou</address><brithday>2011-04-27 19:02:13.747 CST</brithday></com.hoo.entity.User> </entry></map>

6、 轉(zhuǎn)換List集合

/** * <b>function:</b>轉(zhuǎn)換List對象 * @author hoojo * @createDate 2011-4-27 下午06:20:02 * @return */ @RequestMapping("/doListXMLXStream") public ModelAndView doListXMLXStreamView() { System.out.println("#################ViewController doListXMLXStreamView##################"); ModelAndView mav = new ModelAndView("xStreamMarshallingView"); List<Object> beans = new ArrayList<Object>(); for (int i = 0; i < 3; i++) { Account bean = new Account(); bean.setAddress("北京#" + i); bean.setEmail("email" + i + "@12" + i + ".com"); bean.setId(1 + i); bean.setName("haha#" + i); Brithday day = new Brithday(); day.setBrithday("2010-11-2" + i); bean.setBrithday(day); beans.add(bean); User user = new User(); user.setAddress("china GuangZhou 廣州# " + i); user.setAge(23 + i); user.setBrithday(new Date()); user.setName("jack#" + i); user.setSex(Boolean.parseBoolean(i + "")); beans.add(user); } mav.addObject(beans); return mav; }

在WebBrowser中請求http://localhost:8080/SpringMVC4View/xStream/view/doListXMLXStream.do

結(jié)果如下：

<list> <myBeans><id>1</id><name>haha#0</name><email>email0@120.com</email><address>北京#0</address><生日> <brithday>2010-11-20</brithday></生日></myBeans> <com.hoo.entity.User><name>jack#0</name><age>23</age><sex>false</sex><address>china GuangZhou 廣州# 0</address> <brithday>2011-04-27 19:08:40.106 CST</brithday></com.hoo.entity.User> <myBeans><id>2</id><name>haha#1</name><email>email1@121.com</email><address>北京#1</address><生日> <brithday>2010-11-21</brithday></生日></myBeans> <com.hoo.entity.User><name>jack#1</name><age>24</age><sex>false</sex><address>china GuangZhou 廣州# 1</address> <brithday>2011-04-27 19:08:40.106 CST</brithday></com.hoo.entity.User> <myBeans><id>3</id><name>haha#2</name><email>email2@122.com</email><address>北京#2</address><生日> <brithday>2010-11-22</brithday></生日></myBeans> <com.hoo.entity.User><name>jack#2</name><age>25</age><sex>false</sex><address>china GuangZhou 廣州# 2</address> <brithday>2011-04-27 19:08:40.106 CST</brithday></com.hoo.entity.User></list>

總結(jié)，xStream相對jaxb2要簡單些。而且相對比較靈活，可以輕易的轉(zhuǎn)換Java普通類型。

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下次會介紹castor轉(zhuǎn)換XML、jibx轉(zhuǎn)換XML、Jackson轉(zhuǎn)換JSON 以及自定義Jsonlib視圖轉(zhuǎn)換Json。

本文轉(zhuǎn)自hoojo博客園博客，原文鏈接：http://www.cnblogs.com/hoojo/archive/2011/04/29/2032571.html，如需轉(zhuǎn)載請自行聯(lián)系原作者

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