使用SAXReader对XML进行操作
Posted 烽火戏诸侯~~~
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了使用SAXReader对XML进行操作相关的知识，希望对你有一定的参考价值。
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
private void doBrowse(ServletContextEvent sce) {
HashMap<String,BrowseBean1> map1 = new HashMap<String,BrowseBean1>();
SAXReader saxReader = new SAXReader();
Document document = null;
// xml文件位置
String path = this.getClass().getResource("/").getPath();
//String pString = this.getClass().getResource(pString).getPath();
String filePath = path.substring(0, path.length()- "classes/".length())+"browse.xml";
//logger.warn(path);
//logger.warn(filePath);
try {
document = saxReader.read(new File(URLDecoder.decode(filePath, "utf-8")));
} catch (UnsupportedEncodingException e) {
// 路径中文解码错误
e.printStackTrace();
} catch (DocumentException e) {
e.printStackTrace();
logger.warn("查询操作的xml文档异常");
}
List list = document.selectNodes("/BrowseElements/element/@flag");
//logger.warn(list);
Iterator iter = list.iterator();
/**
* 自己写的方法，里面没有全部使用迭代器，用的for each 循环 start
*/
while(iter.hasNext()){
Attribute attribute = (Attribute) iter.next();
String flag = attribute.getValue();
List listTemp1 = document.selectNodes("/BrowseElements/element[@flag=\'"
+ flag + "\']/@pageSize");
Iterator iterTemp1 = listTemp1.iterator();
int pageSize = 0;
while (iterTemp1.hasNext()) {
Attribute attribute1 = (Attribute) iterTemp1.next();
pageSize = Integer.parseInt(attribute1.getValue());
}
BrowseBean1 browseBean1 = new BrowseBean1();
browseBean1.setPageSize(pageSize);
List listTemp2 = document.selectNodes("/BrowseElements/element[@flag=\'"
+ flag + "\']/sql/@value");
LinkedHashMap<String,BrowseBean2> map2 = new LinkedHashMap<String,BrowseBean2>();
for(Object ob : listTemp2){
//System.out.println(ob);
String value = ((Attribute) ob).getValue();
//System.out.println(value);
BrowseBean2 browseBean2 = new BrowseBean2();
List listTemp3 = document.selectNodes("/BrowseElements/element[@flag=\'"
+ flag + "\']/sql[@value=\'"+value+"\']/@key");
for(Object ob1 : listTemp3){
String key = ((Attribute) ob1).getValue();
browseBean2.setKey(key);
//System.out.println(key);
}
List listTemp4 = document.selectNodes("/BrowseElements/element[@flag=\'"
+ flag + "\']/sql[@value=\'"+value+"\']/struct");
ArrayList<StructBean> struct = new ArrayList<StructBean>();
for(Object ob2 : listTemp4){
StructBean structBean = new StructBean();
String structValueString = ((Element) ob2).getText();
String sessionString = ((Element) ob2).attributeValue("session");
String requestString = ((Element) ob2).attributeValue("request");
structBean.setStructValue(structValueString);
structBean.setSession(sessionString);
structBean.setRequest(requestString);
struct.add(structBean);
}
browseBean2.setStruct(struct);
List listTemp5 = document.selectNodes("/BrowseElements/element[@flag=\'"
+ flag + "\']/sql[@value=\'"+value+"\']/param");
ArrayList<ParamBean> param = new ArrayList<ParamBean>();
for(Object ob3 : listTemp5){
ParamBean paramBean = new ParamBean();
String paramValue = ((Element) ob3).getText();
String notNull = ((Element) ob3).attributeValue("notNull");
String session = ((Element) ob3).attributeValue("session");
String request = ((Element) ob3).attributeValue("request");
String drop = ((Element) ob3).attributeValue("drop");
String timeStart = ((Element) ob3).attributeValue("timeStart");
String timeEnd = ((Element) ob3).attributeValue("timeEnd");
paramBean.setParamValue(paramValue);
paramBean.setNotNull(notNull);
paramBean.setSession(session);
paramBean.setRequest(request);
paramBean.setDrop(drop);
paramBean.setTimeStart(timeStart);
paramBean.setTimeEnd(timeEnd);
param.add(paramBean);
//System.out.println(paramBean.getDrop());
if(((Element) ob3).getText()==null||"".equals(((Element) ob3).getText())){
System.out.println("该<element>paramBean为空，即不需要参数");
//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
}else{
System.out.println("paramValue为："+paramBean.getParamValue());
}
}
browseBean2.setParam(param);
List listTemp6 = document.selectNodes("/BrowseElements/element[@flag=\'"
+ flag + "\']/sql[@value=\'"+value+"\']/title");
ArrayList<String> title = new ArrayList<String>();
for(Object ob4 : listTemp6){
String titleString = ((Element) ob4).getText();
title.add(titleString);
//System.out.println(titleString);
//System.out.println(title);
}
browseBean2.setTitle(title);
List listTemp7 = document.selectNodes("/BrowseElements/element[@flag=\'"
+ flag + "\']/sql[@value=\'"+value+"\']/output");
ArrayList<String> output = new ArrayList<String>();
for(Object ob5 : listTemp7){
output.add(((Element) ob5).getText());
}
browseBean2.setOutput(output);
map2.put(value, browseBean2);
}
browseBean1.setMap(map2);
map1.put(flag, browseBean1);
System.out.println("遍历完browse.xml中的一个<element></element>");
}
/**
* 自己写的方法，里面没有全部使用迭代器，用的for each 循环 end
*/
/**
* Ango框架写法，全部使用iterator start
*/
while (iter.hasNext()) {
Attribute attribute = (Attribute) iter.next();
String flag = attribute.getValue();
System.out.println(flag);
List listTemp1 = document.selectNodes("/BrowseElements/element[@flag=\'"
+ flag + "\']/@pageSize");
Iterator iterTemp1 = listTemp1.iterator();
int pageSize = 0;
while (iterTemp1.hasNext()) {
Attribute attribute1 = (Attribute) iterTemp1.next();
pageSize = Integer.parseInt(attribute1.getValue());
}
BrowseBean1 browseBean1 = new BrowseBean1();
browseBean1.setPageSize(pageSize);
List listTemp2 = document.selectNodes("/BrowseElements/element[@flag=\'"
+ flag + "\']/sql/@value");
Iterator iterTemp2 = listTemp2.iterator();
LinkedHashMap<String,BrowseBean2> map2 = new LinkedHashMap<String,BrowseBean2>();
while (iterTemp2.hasNext()) {
Attribute attribute2 = (Attribute) iterTemp2.next();
String value = attribute2.getValue();
BrowseBean2 browseBean2 = new BrowseBean2();
List listTemp3 = document.selectNodes("/BrowseElements/element[@flag=\'"
+ flag + "\']/sql[@value=\'"+value+"\']/@key");
Iterator iterTemp3 = listTemp3.iterator();
while (iterTemp3.hasNext()) {
Attribute attribute3 = (Attribute) iterTemp3.next();
String key = attribute3.getValue();
browseBean2.setKey(key);
}
List listTemp4 = document.selectNodes("/BrowseElements/element[@flag=\'"
+ flag + "\']/sql[@value=\'"+value+"\']/struct");
Iterator iterTemp4 = listTemp4.iterator();
ArrayList<StructBean> struct = new ArrayList<StructBean>();
while (iterTemp4.hasNext()) {
Element element = (Element) iterTemp4.next();
StructBean structBean = new StructBean();
structBean.setStructValue(element.getText());
structBean.setSession(element.attributeValue("session"));
structBean.setRequest(element.attributeValue("request"));
struct.add(structBean);
}
browseBean2.setStruct(struct);
List listTemp5 = document.selectNodes("/BrowseElements/element[@flag=\'"
+ flag + "\']/sql[@value=\'"+value+"\']/param");
Iterator iterTemp5 = listTemp5.iterator();
ArrayList<ParamBean> param = new ArrayList<ParamBean>();
while (iterTemp5.hasNext()) {
Element element = (Element) iterTemp5.next();
ParamBean paramBean = new ParamBean();
paramBean.setParamValue(element.getText());
paramBean.setNotNull(element.attributeValue("notNull"));
paramBean.setSession(element.attributeValue("session"));
paramBean.setRequest(element.attributeValue("request"));
paramBean.setDrop(element.attributeValue("drop"));
paramBean.setTimeStart(element.attributeValue("timeStart"));
paramBean.setTimeEnd(element.attributeValue("timeEnd"));
param.add(paramBean);
}
browseBean2.setParam(param);
List listTemp6 = document.selectNodes("/BrowseElements/element[@flag=\'"
+ flag + "\']/sql[@value=\'"+value+"\']/title");
Iterator iterTemp6 = listTemp6.iterator();
ArrayList<String> title = new ArrayList<String>();
while (iterTemp6.hasNext()) {
Element element = (Element) iterTemp6.next();
title.add(element.getText());
}
browseBean2.setTitle(title);
List listTemp7 = document.selectNodes("/BrowseElements/element[@flag=\'"
+ flag + "\']/sql[@value=\'"+value+"\']/output");
Iterator iterTemp7 = listTemp7.iterator();
ArrayList<String> output = new ArrayList<String>();
while (iterTemp7.hasNext()) {
Element element = (Element) iterTemp7.next();
output.add(element.getText());
}
browseBean2.setOutput(output);
map2.put(value, browseBean2);
}
browseBean1.setMap(map2);
map1.put(flag, browseBean1);
}
/**
* Ango框架写法，全部使用iterator end
*/
ServletContext sc = sce.getServletContext();
sc.setAttribute("adubBrowse", map1);
logger.info("====================browse.xml已更新完毕====================");
}
XML结构如下：
<?xml version="1.0" encoding="UTF-8"?> <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" --> <element flag="browse_code" pageSize="100" description="获取代码表"> <!-- sql语句必须保证正确 --> <sql value="select * from code where `table` = ?"> <param>table</param> <title>代码编号</title> <title>代码内容</title> <title>权重1</title> <title>权重2</title> <title>备注</title> <output>id</output> <output>content</output> <output>weight1</output> <output>weight2</output> <output>note</output> <output>column</output> <output>table</output> </sql> </element> <element flag="browse_teacherInformation" pageSize="10" description="对教师进行查询"> <!-- sql语句必须保证正确 --> <sql value="select * from teacher_info where id like ? and name like ? and college=? " description="浏览教师"> <param>id</param> <param>name</param> <param drop="true1" session="true">college</param> <title>职工号</title> <title>教师姓名</title> <title>性别</title> <title>所属单位</title> <title>来校日期</title> <output>id</output> <output>name</output> <output>sex</output> <output>college</output> <output>arrive_time</output> </sql> </element> <element flag="browse_adminTeacherInformation" pageSize="10" description="对所有教师进行查询"> <!-- sql语句必须保证正确 --> <sql value="select * from teacher_info where id like ? and name like ? and college like ? " description="浏览教师"> <param>id</param> <param>name</param> <param>college</param> <title>序号</title> <title>职工号</title> <title>教师姓名</title> <title>性别</title> <title>所属单位</title> <title>来校日期</title> <output>id</output> <output>name</output> <output>sex</output> <output>college</output> <output>arrive_time</output> </sql> </element> <element flag="browse_teacherPassword" pageSize="10" description="对教师密码进行模糊查询"> <!-- sql语句必须保证正确 --> <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"> <param>id</param> <param>name</param> <param session="true" drop="true">userName</param> <param session="true" drop="true">college</param> <title>教师姓名</title> <title>职工号</title> <title>性别</title> <title>密码</title> <output>name</output> <output>id</output> <output>sex</output> <output>password</output> </sql> </element> <element flag="browse_administrator_teacherPassword" pageSize="10" description="对所有教师密码进行模糊查询"> <!-- sql语句必须保证正确 --> <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"> <param>college</param> <param>id</param> <param>name</param> <param session="true" drop="true">userName</param> <title>教师姓名</title> <title>职工号</title> <title>性别</title> <title>密码</title> <title>所属单位</title> <output>name</output> <output>id</output> <output>sex</output> <output>password</output> <output>college</output> </sql> </element> <element flag="browseNews" pageSize="10" description="对信息进行模糊查询"> <!-- sql语句必须保证正确 --> <sql value="select * from news" description="信息查询"> <param></param> <title>标题</title> <title>发布时间</title> <title>审核状态</title> <output>title</output> <output>publishTime</output> <output>status</output> <output>id</output> </sql> </element> <element flag="getNews" pageSize="10" description="对信息进行模糊查询"> <!-- sql语句必须保证正确 --> <sql value="select * from news where status = 1 limit 5" description="信息查询"> <output>id</output> <output>title</output> <output>publishTime</output> </sql> </element> </BrowseElements>
各类javaBean属性如下:
以上是关于使用SAXReader对XML进行操作的主要内容，如果未能解决你的问题，请参考以下文章