javaweb高速公路模拟ETC收费系统的设计与实现.rar(项目源码+毕业设计+数据库文件)sprin boot mysql

package com.demo.road.util; import org.dom4j.Document; import org.dom4j.DocumentHelper; import org.dom4j.Element; import org.dom4j.io.OutputFormat; import org.dom4j.io.SAXReader; import org.dom4j.io.XMLWriter; import javax.servlet.http.HttpServletRequest; import java.io.*; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Set; public class XMLUtil { public static Map<String,String> reqMsg2Map(HttpServletRequest request){ String mxlstr=regXml2String(request); Map<String,String> map=new HashMap<>(); try { Document document= DocumentHelper.parseText(mxlstr); Element root=document.getRootElement(); List<Element> eles=root.elements(); for(Element e:eles){ map.put(e.getName(),e.getTextTrim()); } return map; } catch (Exception e) { e.printStackTrace(); return null; } } /** * 解析request中的xml为string * @param request * @return */ public static String regXml2String(HttpServletRequest request){ try { BufferedReader bufferedReader=new BufferedReader(new InputStreamReader(request.getInputStream())); String str=null; StringBuilder stringBuilder=new StringBuilder(); while ((str=bufferedReader.readLine())!=null){ stringBuilder.append(str); } return stringBuilder.toString(); } catch (IOException e) { e.printStackTrace(); return e.getMessage(); } } /** * map转换xml * @param paramMap * @return */ public static String map2Xml(Map<String,Object>paramMap){ Document document=DocumentHelper.createDocument(); Element root=document.addElement("xml"); Set<String>keys=paramMap.keySet(); for(String key:keys){ root.addElement(key).addText((String) paramMap.get(key)); } StringWriter stringWriter=new StringWriter(); try { document.write(stringWriter); return stringWriter.toString(); } catch (IOException e) { e.printStackTrace(); return null; } } /** * (多层)map转换为xml格式字符串 * * @param map 需要转换为xml的map * @param isCDATA 是否加入CDATA标识符 true:加入 false:不加入 * @return xml字符串 */ public static String multilayerMapToXml(Map<String, Object> map, boolean isCDATA){ String parentName = "xml"; Document doc = DocumentHelper.createDocument(); doc.addElement(parentName); String xml = recursionMapToXml(doc.getRootElement(), parentName, map, isCDATA); return formatXML(xml); } /** * multilayerMapToXml核心方法，递归调用 * * @param element 节点元素 * @param parentName 根元素属性名 * @param map 需要转换为xml的map * @param isCDATA 是否加入CDATA标识符 true:加入 false:不加入 * @return xml字符串 */ @SuppressWarnings("unchecked") private static String recursionMapToXml(Element element, String parentName, Map<String, Object> map, boolean isCDATA) { Element xmlElement = element.addElement(parentName); map.keySet().forEach(key -> { Object obj = map.get(key); if (obj instanceof Map) { recursionMapToXml(xmlElement, key, (Map<String, Object>)obj, isCDATA); } else { String value = obj == null ? "" : obj.toString(); if (isCDATA) { xmlElement.addElement(key).addCDATA(value); } else { xmlElement.addElement(key).addText(value); } } }); return xmlElement.asXML(); } /** * 格式化xml,显示为容易看的XML格式 * * @param xml 需要格式化的xml字符串 * @return */ public static String formatXML(String xml) { String requestXML = null; try { // 拿取解析器 SAXReader reader = new SAXReader(); Document document = reader.read(new StringReader(xml)); if (null != document) { StringWriter stringWriter = new StringWriter(); // 格式化,每一级前的空格 OutputFormat format = new OutputFormat(" ", true); // xml声明与内容是否添加空行 format.setNewLineAfterDeclaration(false); // 是否设置xml声明头部 format.setSuppressDeclaration(false); // 是否分行 format.setNewlines(true); XMLWriter writer = new XMLWriter(stringWriter, format); writer.write(document); writer.flush(); writer.close(); requestXML = stringWriter.getBuffer().toString(); } return requestXML; } catch (Exception e) { System.out.println("格式化失败"); return null; } } }