SpringMVC 中整合JSON、XML视图一

最后更新于:2022-04-01 14:22:30

SpringMVC中整合了JSON、XML的视图,可以通过这些视图完成Java对象到XML、JSON的转换。转换XML提供了MarshallingView,开发者只需用注入相应的marshaller、和属性配置,即可自动完成Java的Model对象中的数据到XML的编组。 Email:hoojo_@126.com Blog:[http://blog.csdn.net/IBM_hoojo](http://blog.csdn.net/IBM_hoojo) [http://hoojo.cnblogs.com/](http://hoojo.cnblogs.com/) ### 一、准备工作 1、 本次程序会涉及到Jackson、xStream、Jibx、Jaxb2、castor等技术,如果你对这些技术还不是很了解。建议阅读:[http://www.cnblogs.com/hoojo/archive/2011/04/27/2030264.html](http://www.cnblogs.com/hoojo/archive/2011/04/27/2030264.html) 这篇文章中涉及到的内容应该对你有不少帮助。 2、 jar包下载 spring各版本jar下载地址:[http://ebr.springsource.com/repository/app/library/detail?name=org.springframework.spring](http://ebr.springsource.com/repository/app/library/detail?name=org.springframework.spring) 相关的依赖包也可以在这里找到:[http://ebr.springsource.com/repository/app/library](http://ebr.springsource.com/repository/app/library) 3、 至少需要以下jar包 [![clip_image002](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-04-15_57105c492db5e.gif "clip_image002")](http://hi.csdn.net/attachment/201104/29/0_1304048530oJvk.gif) 4、 当前工程的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> <-- 解决工程编码过滤器 --> <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"> <-- 注解探测器 --> <context:component-scan base-package="com.hoo.controller"/> <-- 视图解析器,根据视图的名称new ModelAndView(name),在配置文件查找对应的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> ~~~ 启动后,可以看到index.jsp 没有出现异常或错误。那么当前SpringMVC的配置就成功了。 ### 二、利用Jaxb2编组XML 1、 Jaxb2可以完成XML和Java的相互转换,在WebService中用得较多。前面也介绍过Jaxb2 的用法。 在线博文: For cnblogs:[http://www.cnblogs.com/hoojo/archive/2011/04/26/2029011.html](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](http://blog.csdn.net/IBM_hoojo/archive/2011/04/26/6363491.aspx) 2、 首先在dispatcher.xml中配置Jaxb2的marshaller的视图,配置如下: ~~~ <-- xml视图,Jaxb2Marshaller,需要配置对象和对象添加Annotation xml注解,不需要添加额外的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中已经包含,所以不需要添加额外的jar包。详细信息你可以参考1中的博文。上面的jaxb2MarshallingView视图的class是MarshallingView,它有一个构造器需要传递一个Marshaller。Marshaller主要完成编组,即将Java对象转换成XML的这么一个东东。我们在这个构造器中注入了Jaxb2Marshaller这个类,这个bean有一个classesToBeBound属性,这个属性是一个数组。需要将即将转换成XML的Java对象配置在这里。而且这些对象需要进行Annotation注解。 3、 创建Jaxb2MarshallingViewController,完成Java对象到XML的转换 单个JavaBean的转换,代码如下: ~~~ 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; /** * function:Jaxb2MarshallingView 视图,利用Jaxb2进行Java对象到XML的转换技术 * @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 需要配置转换成xml的java对象的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; } } ~~~ 上面的代码的ModelAndView配置了jaxb2MarshallingView这个视图,就表示结果集会通过这个视图进行编组后显示。上面需要转换的AccountBean和Birthday对象,这些对象需要配置annotation,[前面已经讲到annotation对JavaBean转换XML的作用](http://www.cnblogs.com/hoojo/archive/2011/04/26/2029011.html)。我们来看看AccountBean对象代码: ~~~ 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的相关技术,参考:[http://www.cnblogs.com/hoojo/archive/2011/04/26/2029011.html](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中的一个属性,在AccountBean中已经注解过。这里就不需要进行注解配置。 通过浏览器请求:[http://localhost:8080/SpringMVC4View/jaxb2/view/doXMLJaxb2.do](http://localhost:8080/SpringMVC4View/jaxb2/view/doXMLJaxb2.do) 结果如下: ~~~ <?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、 转换带List属性的JavaEntity ~~~ /** * function:转换带有List属性的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注解过的代码 ~~~ 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; } } ~~~ 通过上面的注解可以看出List中只能存储User、AccountBean对象,关于User对象的代码和AccountBean对象的是一样的,只是类名不同而已。读者可以自己添加。在WebBrowser中请求:[http://localhost:8080/SpringMVC4View/jaxb2/view/doListXMLJaxb2.do](http://localhost:8080/SpringMVC4View/jaxb2/view/doListXMLJaxb2.do) 结果如下: ~~~ <?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、 转换带有Map属性的JavaBean,Jaxb2转换Map有点复杂,先看看代码: ~~~ /** * function:转换带有Map属性的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 map = new HashMap(); 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的代码,代码很简单就一个Map的属性。 ~~~ 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 map; @XmlJavaTypeAdapter(MapAdapter.class) public HashMap getMap() { return map; } public void setMap(HashMap map) { this.map = map; } } ~~~ 上面的代码的getMap方法设置了XmlJavaTypeAdapter这个注解,注解里面的MapAdapter是我们自己实现的,而且还要构建一个MapElements数组元素。主要是继承XmlAdapter重写里面的几个方法完成的。 MapAdapter代码 ~~~ package com.hoo.util; import java.util.HashMap; import java.util.Map; import javax.xml.bind.annotation.adapters.XmlAdapter; import com.hoo.entity.AccountBean; /** * function:AccountBean 编组、解组的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> { public MapElements[] marshal(Map arg0) throws Exception { MapElements[] mapElements = new MapElements[arg0.size()]; int i = 0; for (Map.Entry entry : arg0.entrySet()) mapElements[i++] = new MapElements(entry.getKey(), entry.getValue()); return mapElements; } public Map unmarshal(MapElements[] arg0) throws Exception { Map r = new HashMap(); for (MapElements mapelement : arg0) r.put(mapelement.key, mapelement.value); return r; } } ~~~ MapElements代码 ~~~ package com.hoo.util; import javax.xml.bind.annotation.XmlElement; import com.hoo.entity.AccountBean; /** * function: 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; } } ~~~ 在浏览器中请求:[http://localhost:8080/SpringMVC4View/jaxb2/view/doMapXMLJaxb2.do](http://localhost:8080/SpringMVC4View/jaxb2/view/doMapXMLJaxb2.do) 结果如下: ~~~ <?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> ~~~ 总结,如果你想将一些Java的基本类型转换成XML。那么你得创建一个带getter、setter方法的JavaBean。然后在Bean的getter方法进行相应的Annotation注解即可完成转换。 ### 三、利用xStream转换XML 1、 xStream可以轻易的将Java对象转换成XML、JSON,Spring整合利用xStream转换xml。需要添加xStream相关的xstream-1.3.1.jar包。 如果你对xStream不上很了解,你可以先阅读这篇文章: For csblogs:[http://www.cnblogs.com/hoojo/archive/2011/04/22/2025197.html](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](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视图,XStreamMarshaller,可以转换任何形式的java对象,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"> <-- 启用annotation --> <property name="autodetectAnnotations" value="true"/> <-- 类名别名 --> <property name="aliases"> <map> <-- Account这个类的别名就变成了myBeans,那么转换后的xml中就是myBeans --> <entry key="myBeans" value="com.hoo.entity.Account"/> </map> </property> <-- 基本属性别名 --> <property name="fieldAliases"> <map> <-- Account中的brithday这个属性 --> <entry key="com.hoo.entity.Account.brithday" value="生日"/> </map> </property> </bean> </property> </bean> ~~~ 上次配置的参数有注释描述,还要没有配置的参数。如:annotatedClass、annotatedClasses是当没有配置启用annotation的时候,可以用这2个属性进行配置你指定的class启用annotation注解。streamDriver是配置驱动用的,默认可以不要驱动,你可以配置DomDriver、JSON相关的驱动。encoding是设置编码,关于XStreamMarshaller还要更多的参数配置和上面xStream 的博文中讲解的一样使用,只是通过配置,而博文中是直接在代码中写的。当然也可以通过annotation进行注解哦;如果你想了解更多xStream的用法,请你仔细阅读:[http://www.cnblogs.com/hoojo/archive/2011/04/22/2025197.html](http://www.cnblogs.com/hoojo/archive/2011/04/22/2025197.html) 3、 普通JavaBean转换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; /** * function:Jaxb2MarshallingView 视图,利用Jaxb2进行Java对象到XML的转换技术 * @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 需要配置转换成xml的java对象的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上面的代码已经给出,这里就不重复了。值得说明的是xStream在ModelAndView中,直接用addObject方法添加时,有时候出现一些不是我们转换的对象的信息,一般是BindingResult的xml信息。解决办法就是设置addObject的key。Key设置为BindingResult.*MODEL_KEY_PREFIX*这样就可以了,代码上面已经给出。 在浏览器中请求:[http://localhost:8080/SpringMVC4View/xStream/view/doXMLXStream.do](http://localhost:8080/SpringMVC4View/xStream/view/doXMLXStream.do) 结果如下: ~~~ <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、 转换对象数组 代码如下: ~~~ /** * function:转换对象数组 * @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中请求[http://localhost:8080/SpringMVC4View/xStream/view/doMoreXMLXStream.do](http://localhost:8080/SpringMVC4View/xStream/view/doMoreXMLXStream.do) 结果如下: ~~~ <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> ~~~ 结果中的myBeans、生日就是在dispatcher配置文件中重命名的对象属性名称。 5、 转换Map集合 ~~~ /** * function:转换Map对象 * @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("广东"); 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 map = new HashMap(); map.put("bean", bean); map.put("user", user); mav.addObject(map); return mav; } ~~~ 在WebBrowser中请求[http://localhost:8080/SpringMVC4View/xStream/view/doDifferXMLXStream.do](http://localhost:8080/SpringMVC4View/xStream/view/doDifferXMLXStream.do) 结果如下: ~~~ <map><entry> <string>bean</string><myBeans><id>1</id><name>haha</name><email>email</email> <address>广东</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、 转换List集合 ~~~ /** * function:转换List对象 * @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 广州# " + 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中请求[http://localhost:8080/SpringMVC4View/xStream/view/doListXMLXStream.do](http://localhost:8080/SpringMVC4View/xStream/view/doListXMLXStream.do) 结果如下: ~~~ <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 广州# 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 广州# 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 广州# 2</address> <brithday>2011-04-27 19:08:40.106 CST</brithday></com.hoo.entity.User></list> ~~~ 总结,xStream相对jaxb2要简单些。而且相对比较灵活,可以轻易的转换Java普通类型。 下次会介绍castor转换XML、jibx转换XML、Jackson转换JSON 以及自定义Jsonlib视图转换Json。
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