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在spring MVC框架中显示xml视图


  举一个很简单的例子,用户在登陆窗口中输入用户名和密码,提交以后以xml的方式显示你填写的内容,
  
  具体步骤如下:
  
  1.配置web.xml文件
  <servlet>
  <servlet-name>login</servlet-name>
  <servlet-class>
  org.springframework.web.servlet.DispatcherServlet
  </servlet-class>
  <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
  <servlet-name>login</servlet-name>
  <url-pattern>*.htm</url-pattern>
  </servlet-mapping>
  
  2.配置login.xml文件
  <bean id="viewResolver"
  
  class="org.springframework.web.servlet.view.ResourceBundleViewResolver">
  <property name="basename">
  <value>views</value>
  </property>
  </bean>
  
  <!--Request Mapping -->
  <bean id="urlMapping"
  class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
  <property name="mappings">
  <props>
  <prop key="/login.htm">LoginAction</prop>
  
  </props>
  </property>
  </bean>
  
  <!---Action Definition-->
  <bean id="LoginAction"
  class="LoginAction">
  <property name="commandClass">
  <value>LoginInfo</value>
  </property>
  <property name="fail_view">
  <value>loginfail</value>
  </property>
  <property name="success_view">
  <value>main</value>
  </property>
  </bean>
  
  3.定义控制类loginAction.java和commandClass-->LoginInfo.java
  <---------------------LoginAction---------------------------->
  public class LoginAction extends SimpleFormController {
  
  
  protected ModelAndView onSubmit(Object cmd, BindException ex)
  throws Exception {
  LoginInfo loginInfo = (LoginInfo) cmd;
  
  Map model = new HashMap();
  List list = new ArrayList();
  list.add(loginInfo);
  model.put("loginInfos", list);
  
  return new ModelAndView("login", model);
  
  }
  <---------------------LoginAction---------------------------->
  <---------------------LoginInfo---------------------------->
  public class LoginInfo {
  private String username;
  private String password;
  
  public String getPassword() {
  return password;
  }
  
  public void setPassword(String password) {
  this.password = password;
  }
  
  public String getUsername() {
  return username;
  }
  
  public void setUsername(String username) {
  this.username = username;
  }
  }
  <---------------------LoginInfo---------------------------->
  
  4.定义自己的viewResolver--->LoginView
  <---------------------LoginView---------------------------->
  public class LoginView extends AbstractXsltView {
  protected Node createDomNode(Map model, String rootName,
  HttpServletRequest request, HttpServletResponse response)
  throws Exception {
  
  Document doc = DocumentHelper.createDocument();
  Element root = doc.addElement(rootName);
  doc.setRootElement(root);
  List loginInfos = (List) model.get("loginInfos");
  for (Iterator it = loginInfos.iterator(); it.hasNext();) {
  LoginInfo info = (LoginInfo) it.next();
  Element a = root.addElement("loginInfo");
  a.addElement("username").addText(info.getUsername());
  a.addElement("password").addText(info.getPassword());
  
  }
  response.setContentType("text/xml");
  return new DOMWriter().write(doc);
  }
  
  }
  <---------------------LoginView---------------------------->
  
  5.定义views.properties文件
  login.class=LoginView
  
  login.stylesheetLocation=/WEB-INF/xsl/loginInfo.xsl
  
  login.root=loginInfos
  
  6.定义loginInfo.xsl文件
  <?xml version="1.0" encoding="GBK"?>
  <xsl:stylesheet
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
  <xsl:output method="xml" omit-xml-declaration="no"/>
  <xsl:template match="/">
  <loginInfos>
  <xsl:for-each select="loginInfos/loginInfo">
  <loginInfo>
  <username>
  <xsl:value-of select="username"/>
  </username>
  <password>
  <xsl:value-of select="password"/>
  </password>
  </loginInfo>
  </xsl:for-each>
  </loginInfos>
  </xsl:template>
  </xsl:stylesheet>
  
  7.定义index.html文件
  <html>
  <body>
  <form method="POST" action="login.htm">
  <p align="left">登录</p>
  <br>
  用户名:
  <input type="text" name="username" >
  <br>
  密 码 :
  <input type="password" name="password" >
  <br>
  <p>
  <input type="submit" value="提交" name="B1">
  <input type="reset" value="重置" name="B2">
  </p>
  </form>
  </body>
  </html>
  
  8.运行tomcat 预览:http://localhost:8080/xml/index.html
  
  注:
  
  views.properties放在classes文件夹。loginInfo.xsl放在/WEB-INF/xsl/文件夹。
  
  index.html放在根目录下,xml文件放在/WEB-INF/下,其他的.class文件放在/WEB-INF/classes/下
  
  需要的dom4j-1.6.jar、spring.jar放到/WEB-INF/lib下。
  
  做完这一切,你就可以在浏览器里面测试结果了~!~
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