该例子主要使用SAXReader对XML进行操作，browse.xml是Ango框架里面的XML文件

采用两种方法，第一种的全部是iterator，另外一种采用了部分的for each

代码如下

  1.  private void doBrowse(ServletContextEvent sce) {
  2.     	HashMap<String,BrowseBean1> map1 = new HashMap<String,BrowseBean1>();
  3. 		SAXReader saxReader = new SAXReader();
  4. 		Document document = null;
  5. 		// xml文件位置
  6. 		String path = this.getClass().getResource("/").getPath();
  7. 		//String pString = this.getClass().getResource(pString).getPath();
  8. 		String filePath = path.substring(0, path.length()- "classes/".length())+"browse.xml";
  9. 		//logger.warn(path);
  10. 		//logger.warn(filePath);
  11. 		try {
  12. 			document = saxReader.read(new File(URLDecoder.decode(filePath, "utf-8")));
  13. 		} catch (UnsupportedEncodingException e) {
  14. 			// 路径中文解码错误
  15. 			e.printStackTrace();
  16. 		} catch (DocumentException e) {
  17. 			e.printStackTrace();
  18. 			logger.warn("查询操作的xml文档异常");
  19. 		}
  20. 		List list = document.selectNodes("/BrowseElements/element/@flag");
  21. 		//logger.warn(list);
  22. 		Iterator iter = list.iterator();
  23.  
  24. 		/**
  25. 		 * 自己写的方法，里面没有全部使用迭代器，用的for each 循环  start
  26. 		 */
  27. 		while(iter.hasNext()){
  28. 			Attribute attribute = (Attribute) iter.next();
  29. 			String flag = attribute.getValue();
  30. 			List listTemp1 = document.selectNodes("/BrowseElements/element[@flag='"
  31. 					+ flag + "']/@pageSize");
  32. 			Iterator iterTemp1 = listTemp1.iterator();
  33. 			int pageSize = 0;
  34. 			while (iterTemp1.hasNext()) {
  35. 				Attribute attribute1 = (Attribute) iterTemp1.next();
  36. 				pageSize = Integer.parseInt(attribute1.getValue());
  37. 			}
  38. 			BrowseBean1 browseBean1 = new BrowseBean1();
  39. 			browseBean1.setPageSize(pageSize);
  40. 			List listTemp2 = document.selectNodes("/BrowseElements/element[@flag='"
  41. 					+ flag + "']/sql/@value");
  42. 			LinkedHashMap<String,BrowseBean2> map2 = new LinkedHashMap<String,BrowseBean2>();
  43. 			for(Object ob : listTemp2){
  44. 				//System.out.println(ob);
  45. 				String value = ((Attribute) ob).getValue();
  46. 				//System.out.println(value);
  47. 				BrowseBean2 browseBean2 = new BrowseBean2();
  48. 				List listTemp3 = document.selectNodes("/BrowseElements/element[@flag='"
  49. 						+ flag + "']/sql[@value='"+value+"']/@key");
  50. 				for(Object ob1 : listTemp3){
  51. 					String key = ((Attribute) ob1).getValue();
  52. 					browseBean2.setKey(key);
  53. 					//System.out.println(key);
  54. 				}
  55. 				List listTemp4 = document.selectNodes("/BrowseElements/element[@flag='"
  56. 						+ flag + "']/sql[@value='"+value+"']/struct");
  57. 				ArrayList<StructBean> struct = new ArrayList<StructBean>();
  58. 				for(Object ob2 : listTemp4){
  59. 					StructBean structBean = new StructBean();
  60. 					String structValueString = ((Element) ob2).getText();
  61. 					String sessionString = ((Element) ob2).attributeValue("session");
  62. 					String requestString = ((Element) ob2).attributeValue("request");
  63. 					structBean.setStructValue(structValueString);
  64. 					structBean.setSession(sessionString);
  65. 					structBean.setRequest(requestString);
  66. 					struct.add(structBean);
  67. 				}
  68. 				browseBean2.setStruct(struct);
  69. 				List listTemp5 = document.selectNodes("/BrowseElements/element[@flag='"
  70. 						+ flag + "']/sql[@value='"+value+"']/param");
  71. 				ArrayList<ParamBean> param = new ArrayList<ParamBean>();
  72. 				for(Object ob3 : listTemp5){
  73. 					ParamBean paramBean = new ParamBean();
  74. 					String paramValue = ((Element) ob3).getText();
  75. 					String notNull = ((Element) ob3).attributeValue("notNull");
  76. 					String session = ((Element) ob3).attributeValue("session");
  77. 					String request = ((Element) ob3).attributeValue("request");
  78. 					String drop = ((Element) ob3).attributeValue("drop");
  79. 					String timeStart = ((Element) ob3).attributeValue("timeStart");
  80. 					String timeEnd = ((Element) ob3).attributeValue("timeEnd");
  81. 					paramBean.setParamValue(paramValue);
  82. 					paramBean.setNotNull(notNull);
  83. 					paramBean.setSession(session);
  84. 					paramBean.setRequest(request);
  85. 					paramBean.setDrop(drop);
  86. 					paramBean.setTimeStart(timeStart);
  87. 					paramBean.setTimeEnd(timeEnd);
  88. 					param.add(paramBean);
  89. 					//System.out.println(paramBean.getDrop());
  90. 					if(((Element) ob3).getText()==null||"".equals(((Element) ob3).getText())){
  91. 						System.out.println("该<element>paramBean为空，即不需要参数");
  92. 						//节点类似<param></param>,这样空的才行，但是实际上如果不需要传参数的话，根本就不用写<param>这个节点，那这个判断有点问题
  93. 					}else{
  94. 						System.out.println("paramValue为："+paramBean.getParamValue());
  95. 					}
  96. 				}
  97. 				browseBean2.setParam(param);
  98. 				List listTemp6 = document.selectNodes("/BrowseElements/element[@flag='"
  99. 						+ flag + "']/sql[@value='"+value+"']/title");
  100. 				ArrayList<String> title = new ArrayList<String>();
  101. 				for(Object ob4 : listTemp6){
  102. 					String titleString =  ((Element) ob4).getText();
  103. 					title.add(titleString);
  104. 					//System.out.println(titleString);
  105. 					//System.out.println(title);
  106. 				}
  107. 				browseBean2.setTitle(title);
  108. 				List listTemp7 = document.selectNodes("/BrowseElements/element[@flag='"
  109. 						+ flag + "']/sql[@value='"+value+"']/output");
  110. 				ArrayList<String> output = new ArrayList<String>();
  111. 				for(Object ob5 : listTemp7){
  112. 					output.add(((Element) ob5).getText());
  113. 				}
  114. 				browseBean2.setOutput(output);
  115. 				map2.put(value, browseBean2);
  116. 			}
  117. 			browseBean1.setMap(map2);
  118. 			map1.put(flag, browseBean1);
  119. 			System.out.println("遍历完browse.xml中的一个<element></element>");
  120. 		}
  121. 		/**
  122. 		 * 自己写的方法，里面没有全部使用迭代器，用的for each 循环   end
  123. 		 */
  124.  
  125. 		/**
  126. 		 * Ango框架写法，全部使用iterator start
  127. 		 */
  128. 		while (iter.hasNext()) {
  129. 			Attribute attribute = (Attribute) iter.next();
  130. 			String flag = attribute.getValue();
  131.  
  132. 			System.out.println(flag);
  133.  
  134. 			List listTemp1 = document.selectNodes("/BrowseElements/element[@flag='"
  135. 					+ flag + "']/@pageSize");
  136. 			Iterator iterTemp1 = listTemp1.iterator();
  137. 			int pageSize = 0;
  138. 			while (iterTemp1.hasNext()) {
  139. 				Attribute attribute1 = (Attribute) iterTemp1.next();
  140. 				pageSize = Integer.parseInt(attribute1.getValue());
  141. 			}
  142. 			BrowseBean1 browseBean1 = new BrowseBean1();
  143. 			browseBean1.setPageSize(pageSize);
  144. 			List listTemp2 = document.selectNodes("/BrowseElements/element[@flag='"
  145. 					+ flag + "']/sql/@value");
  146. 			Iterator iterTemp2 = listTemp2.iterator();
  147. 			LinkedHashMap<String,BrowseBean2> map2 = new LinkedHashMap<String,BrowseBean2>();
  148. 			while (iterTemp2.hasNext()) {
  149. 				Attribute attribute2 = (Attribute) iterTemp2.next();
  150. 				String value = attribute2.getValue();
  151. 				BrowseBean2 browseBean2 = new BrowseBean2();
  152. 				List listTemp3 = document.selectNodes("/BrowseElements/element[@flag='"
  153. 						+ flag + "']/sql[@value='"+value+"']/@key");
  154. 				Iterator iterTemp3 = listTemp3.iterator();
  155. 				while (iterTemp3.hasNext()) {
  156. 					Attribute attribute3 = (Attribute) iterTemp3.next();
  157. 					String key = attribute3.getValue();
  158. 					browseBean2.setKey(key);
  159. 				}
  160. 				List listTemp4 = document.selectNodes("/BrowseElements/element[@flag='"
  161. 						+ flag + "']/sql[@value='"+value+"']/struct");
  162. 				Iterator iterTemp4 = listTemp4.iterator();
  163. 				ArrayList<StructBean> struct = new ArrayList<StructBean>();
  164. 				while (iterTemp4.hasNext()) {
  165. 					Element element = (Element) iterTemp4.next();
  166. 					StructBean structBean = new StructBean();
  167. 					structBean.setStructValue(element.getText());
  168. 					structBean.setSession(element.attributeValue("session"));
  169. 					structBean.setRequest(element.attributeValue("request"));
  170. 					struct.add(structBean);
  171. 				}
  172. 				browseBean2.setStruct(struct);
  173. 				List listTemp5 = document.selectNodes("/BrowseElements/element[@flag='"
  174. 						+ flag + "']/sql[@value='"+value+"']/param");
  175. 				Iterator iterTemp5 = listTemp5.iterator();
  176. 				ArrayList<ParamBean> param = new ArrayList<ParamBean>();
  177. 				while (iterTemp5.hasNext()) {
  178. 					Element element = (Element) iterTemp5.next();
  179. 					ParamBean paramBean = new ParamBean();
  180. 					paramBean.setParamValue(element.getText());
  181. 					paramBean.setNotNull(element.attributeValue("notNull"));
  182. 					paramBean.setSession(element.attributeValue("session"));
  183. 					paramBean.setRequest(element.attributeValue("request"));
  184. 					paramBean.setDrop(element.attributeValue("drop"));
  185. 					paramBean.setTimeStart(element.attributeValue("timeStart"));
  186. 					paramBean.setTimeEnd(element.attributeValue("timeEnd"));
  187. 					param.add(paramBean);
  188. 				}
  189. 				browseBean2.setParam(param);
  190. 				List listTemp6 = document.selectNodes("/BrowseElements/element[@flag='"
  191. 						+ flag + "']/sql[@value='"+value+"']/title");
  192. 				Iterator iterTemp6 = listTemp6.iterator();
  193. 				ArrayList<String> title = new ArrayList<String>();
  194. 				while (iterTemp6.hasNext()) {
  195. 					Element element = (Element) iterTemp6.next();
  196. 					title.add(element.getText());
  197. 				}
  198. 				browseBean2.setTitle(title);
  199. 				List listTemp7 = document.selectNodes("/BrowseElements/element[@flag='"
  200. 						+ flag + "']/sql[@value='"+value+"']/output");
  201. 				Iterator iterTemp7 = listTemp7.iterator();
  202. 				ArrayList<String> output = new ArrayList<String>();
  203. 				while (iterTemp7.hasNext()) {
  204. 					Element element = (Element) iterTemp7.next();
  205. 					output.add(element.getText());
  206. 				}
  207. 				browseBean2.setOutput(output);
  208. 				map2.put(value, browseBean2);
  209. 			}
  210. 			browseBean1.setMap(map2);
  211. 			map1.put(flag, browseBean1);
  212. 		}
  213. 		/**
  214. 		 * Ango框架写法，全部使用iterator end
  215. 		 */
  216.  
  217. 		ServletContext sc = sce.getServletContext();
  218. 		sc.setAttribute("adubBrowse", map1);
  219. 		logger.info("====================browse.xml已更新完毕====================");
  220.  
  221. 	}

　　XML结构如下：

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <BrowseElements><!-- xmlns="http://www.w3school.com.cn" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.w3school.com.cn browse.xsd" -->
  3. 	<element flag="browse_code" pageSize="100" description="获取代码表">
  4. 	    <!-- sql语句必须保证正确 -->
  5. 		<sql value="select * from code where `table` = ?">
  6. 			<param>table</param>
  7. 			<title>代码编号</title>
  8. 			<title>代码内容</title>
  9. 			<title>权重1</title>
  10. 			<title>权重2</title>
  11. 			<title>备注</title>
  12. 			<output>id</output>
  13. 			<output>content</output>
  14. 			<output>weight1</output>
  15. 			<output>weight2</output>
  16. 			<output>note</output>
  17. 			<output>column</output>
  18. 			<output>table</output>
  19. 		</sql>
  20. 	</element>
  21. 	<element flag="browse_teacherInformation" pageSize="10" description="对教师进行查询">
  22. 	    <!-- sql语句必须保证正确 -->
  23. 		<sql value="select * from teacher_info where id like ? and name like ?  and college=? " description="浏览教师">
  24. 		 	<param>id</param>
  25. 		 	<param>name</param>
  26. 		 	<param drop="true1" session="true">college</param>
  27. 			<title>职工号</title>
  28. 			<title>教师姓名</title>
  29. 			<title>性别</title>
  30. 			<title>所属单位</title>
  31. 			<title>来校日期</title>
  32. 			<output>id</output>
  33. 			<output>name</output>
  34. 			<output>sex</output>
  35. 			<output>college</output>
  36. 			<output>arrive_time</output>
  37. 		</sql>
  38. 	</element>
  39.  
  40. 	<element flag="browse_adminTeacherInformation" pageSize="10" description="对所有教师进行查询">
  41. 	    <!-- sql语句必须保证正确 -->
  42. 		<sql value="select * from teacher_info where id like ? and name like ?  and college like ? " description="浏览教师">
  43. 		 	<param>id</param>
  44. 		 	<param>name</param>
  45. 		 	<param>college</param>
  46. 		 	<title>序号</title>
  47. 			<title>职工号</title>
  48. 			<title>教师姓名</title>
  49. 			<title>性别</title>
  50. 			<title>所属单位</title>
  51. 			<title>来校日期</title>
  52. 			<output>id</output>
  53. 			<output>name</output>
  54. 			<output>sex</output>
  55. 			<output>college</output>
  56. 			<output>arrive_time</output>
  57. 		</sql>
  58. 	</element>
  59.  
  60. 	<element flag="browse_teacherPassword" pageSize="10" description="对教师密码进行模糊查询">
  61. 	    <!-- sql语句必须保证正确 -->
  62. 		<sql value="select teacher_info.*,teacher_login.* from teacher_info ,teacher_login,admin_login where teacher_info.id=teacher_login.username and teacher_info.id  like ? and teacher_info.name like ? and admin_login.username=? and teacher_info.college=? ORDER BY id DESC" description="查询教师密码">
  63. 		 	<param>id</param>
  64. 		 	<param>name</param>
  65. 		 	<param session="true" drop="true">userName</param>
  66. 		 	<param session="true" drop="true">college</param>
  67. 			<title>教师姓名</title>
  68. 			<title>职工号</title>
  69. 			<title>性别</title>
  70. 			<title>密码</title>
  71. 			<output>name</output>
  72. 			<output>id</output>
  73. 			<output>sex</output>
  74. 			<output>password</output>
  75. 		</sql>
  76. 	</element>
  77. 	<element flag="browse_administrator_teacherPassword" pageSize="10" description="对所有教师密码进行模糊查询">
  78. 	    <!-- sql语句必须保证正确 -->
  79. 		<sql value="select teacher_info.*,teacher_login.* from teacher_info ,teacher_login,admin_login where teacher_info.college like ? and teacher_info.id=teacher_login.username and teacher_info.id  like ? and teacher_info.name like ? and admin_login.username=?  ORDER BY id DESC" description="查询所有教师密码">
  80. 		 	<param>college</param>
  81. 		 	<param>id</param>
  82. 		 	<param>name</param>
  83. 		 	<param session="true" drop="true">userName</param>
  84. 			<title>教师姓名</title>
  85. 			<title>职工号</title>
  86. 			<title>性别</title>
  87. 			<title>密码</title>
  88. 			<title>所属单位</title>
  89. 			<output>name</output>
  90. 			<output>id</output>
  91. 			<output>sex</output>
  92. 			<output>password</output>
  93. 			<output>college</output>
  94. 		</sql>
  95. 	</element>
  96. <element flag="browseNews" pageSize="10" description="对信息进行模糊查询">
  97. 	    <!-- sql语句必须保证正确 -->
  98. 		<sql value="select * from news" description="信息查询">
  99. 			<param></param>
  100. 			<title>标题</title>
  101. 			<title>发布时间</title>
  102. 			<title>审核状态</title>
  103. 			<output>title</output>
  104. 			<output>publishTime</output>
  105. 			<output>status</output>
  106. 			<output>id</output>
  107. 		</sql>
  108. 	</element>
  109. 	<element flag="getNews" pageSize="10" description="对信息进行模糊查询">
  110. 	    <!-- sql语句必须保证正确 -->
  111. 		<sql value="select * from news where status = 1 limit 5" description="信息查询">
  112. 			<output>id</output>
  113. 			<output>title</output>
  114. 			<output>publishTime</output>
  115. 		</sql>
  116. 	</element>
  117. </BrowseElements>
  118. 　　

　　各类javaBean属性如下:

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