1.pom文件

<properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><maven.compiler.source>1.7</maven.compiler.source><maven.compiler.target>1.7</maven.compiler.target></properties><dependencies><!-- https://mvnrepository.com/artifact/xerces/xercesImpl --><dependency><groupId>xerces</groupId><artifactId>xercesImpl</artifactId><version>2.9.1</version></dependency><!-- JSONObject对象依赖的jar包 开始--><dependency><groupId>commons-beanutils</groupId><artifactId>commons-beanutils</artifactId><version>1.9.3</version></dependency><dependency><groupId>commons-collections</groupId><artifactId>commons-collections</artifactId><version>3.2.1</version></dependency><dependency><groupId>commons-lang</groupId><artifactId>commons-lang</artifactId><version>2.6</version></dependency><dependency><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId><version>1.1.1</version></dependency><dependency><groupId>net.sf.ezmorph</groupId><artifactId>ezmorph</artifactId><version>1.0.6</version></dependency><dependency><groupId>net.sf.json-lib</groupId><artifactId>json-lib</artifactId><version>2.2.3</version><classifier>jdk15</classifier><!-- jdk版本 --></dependency><!-- Json依赖架包下载结束 --></dependencies><build><pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) --><plugins><plugin><artifactId>maven-clean-plugin</artifactId><version>3.0.0</version></plugin><!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging --><plugin><artifactId>maven-resources-plugin</artifactId><version>3.0.2</version></plugin><plugin><artifactId>maven-compiler-plugin</artifactId><version>3.7.0</version></plugin><plugin><artifactId>maven-surefire-plugin</artifactId><version>2.20.1</version></plugin><plugin><artifactId>maven-jar-plugin</artifactId><version>3.0.2</version></plugin><plugin><artifactId>maven-install-plugin</artifactId><version>2.5.2</version></plugin><plugin><artifactId>maven-deploy-plugin</artifactId><version>2.8.2</version></plugin><plugin><artifactId>maven-assembly-plugin</artifactId><configuration><descriptorRefs><descriptorRef>jar-with-dependencies</descriptorRef></descriptorRefs></configuration></plugin></plugins></pluginManagement></build>

2.将查询数据封装到XML文件中，并进行格式化处理

package com.zcl.util;import net.sf.json.JSONArray;
import net.sf.json.JSONObject;import java.io.BufferedWriter;
import java.io.FileWriter;
import java.text.SimpleDateFormat;
import java.util.*;/*** sql查询数据封装到xml文件中*/
public class DataToXml {//默认值private static final String JSON="json";private static final String XML="xml";/***  工具类入口* @param type 数据类型   json / xml* @return  字符串*/public static void DataToJsonOrXml(Object obj,String type) throws Exception{//大小写不影响String str="";if(JSON.equalsIgnoreCase(type)&&JSON.equals(type)){//生成json数据str=toJsonString(obj);}else if(XML.equalsIgnoreCase(type)&&XML.equals(type)){//生成xml数据str=toXml(obj);}else{//默认使用 json ， 参数错误的话 ，默认 为jsonstr=toJsonString(obj);}str = XmlFormatter.format(str);writeToXml(str);}/*** 转 json 对象* @param obj  数据* @return json对象 字符串*/private static String toJsonString(Object obj){if(obj==null) {obj="";}Map<String, Object> map=toKeyVal(obj);JSONObject jsonObject=JSONObject.fromObject(map);return jsonObject.toString();}/***  转xml 格式 ：字符串拼装的格式* @param obj  数据* @return xml数据*/private static String toXml(Object obj){if(obj==null) {obj="";}Map<String,Object> map=toKeyVal(obj);JSONObject object=JSONObject.fromObject(map);StringBuilder builder=new StringBuilder("<?xml version='1.0' encoding='UTF-8'?>");builder.append("<root>");builder.append(mapToxml(object));builder.append("</root>");return builder.toString();}/*** 用来封装数据* @param obj 数据* @return*/private static Map<String, Object> toKeyVal(Object obj){Map<String,Object> map=new HashMap<String, Object>();map.put("data", obj);return map;}/*** 生成 xml* @param object* @return*/private static String mapToxml(JSONObject object){StringBuilder builder=new StringBuilder();@SuppressWarnings("unchecked")Iterator<String> iterator=object.keys();while(iterator.hasNext()){String key=iterator.next();builder.append("<"+key+">");if(object.get(key) instanceof JSONObject){//如果是 JSONObject的话//递归 调用builder.append(mapToxml((JSONObject) object.get(key)));}else if(object.get(key) instanceof JSONArray){//如果是 JSONArray的话StringBuilder builder2=new StringBuilder();JSONArray array=(JSONArray) object.get(key);if(array.isArray()){int i=0;for(Object obj : array) {JSONObject objitem=(JSONObject) obj;String attr="num='"+i+"'";builder2.append("<item "+attr+">");builder2.append(mapToxml(objitem));builder2.append("</item>");i++;}}builder.append(builder2.toString());}else{builder.append(object.get(key));}builder.append("</"+key+">");}return builder.toString();}private static void writeToXml(String str) throws  Exception{//项目根路径String relativelyPath=System.getProperty("user.dir");String fileName = relativelyPath+"\\"+new SimpleDateFormat("yyyyMMdd").format(new Date())+".xml";//1.生成xml文件FileWriter fw=new FileWriter(fileName);BufferedWriter bw=new BufferedWriter(fw);bw.write(str);bw.close();fw.close();}}

3.XML文件的格式化操作

package com.zcl.util;import org.apache.xml.serialize.OutputFormat;
import org.apache.xml.serialize.XMLSerializer;
import org.w3c.dom.Document;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.Writer;/*** 格式化xml*/
public class XmlFormatter {public static String format(String unformattedXml) {try {final Document document = parseXmlFile(unformattedXml);OutputFormat format = new OutputFormat(document);format.setLineWidth(65);format.setIndenting(true);format.setIndent(2);Writer out = new StringWriter();XMLSerializer serializer = new XMLSerializer(out, format);serializer.serialize(document);return out.toString();} catch (IOException e) {throw new RuntimeException(e);}}private static Document parseXmlFile(String in) {try {DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();DocumentBuilder db = dbf.newDocumentBuilder();InputSource is = new InputSource(new StringReader(in));return db.parse(is);} catch (ParserConfigurationException e) {throw new RuntimeException(e);} catch (SAXException e) {throw new RuntimeException(e);} catch (IOException e) {throw new RuntimeException(e);}}}

4.DES方式加密和解密文件

package com.zcl.util;import org.apache.commons.codec.binary.Hex;import javax.crypto.*;
import javax.crypto.spec.SecretKeySpec;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;public class DESCryptoXml {/*** 文件加密*/public static void encrypt(String fileName) {try {String key = "abf894ba2a0e798f";// 再把我们的字符串转变为字节数组，可以用于另一方使用，验证byte[] decodeHex = Hex.decodeHex(key.toCharArray());// 生成密钥对象SecretKeySpec secretKeySpec = new SecretKeySpec(decodeHex, "DES");// 获取加解密实例Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");// 初始化加密模式cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);// 读入并加密文件try {// 输入流BufferedInputStream in = new BufferedInputStream(new FileInputStream(fileName));// 输出流//新文件名String fileNewName = fileName.substring(0,fileName.indexOf("."))+"Encrypt"+fileName.substring(fileName.indexOf("."));CipherOutputStream out = new CipherOutputStream(new BufferedOutputStream(new FileOutputStream(fileNewName)), cipher);int i;do {i = in.read();if (i != -1)out.write(i);} while (i != -1);in.close();out.close();System.out.println("success when encrypt the file");} catch (Exception ey5) {System.out.println("error when encrypt the file");}} catch (Exception e) {e.printStackTrace();}}/*** 文件解密* @param fileName*/public static void decrypt(String fileName) {try {String key = "abf894ba2a0e798f";// 再把我们的字符串转变为字节数组，可以用于另一方使用，验证byte[] decodeHex = Hex.decodeHex(key.toCharArray());// 生成密钥对象SecretKeySpec secretKeySpec = new SecretKeySpec(decodeHex, "DES");// 获取加解密实例Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");// 初始化加密模式cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);try {// 输入流CipherInputStream in = new CipherInputStream(new BufferedInputStream(new FileInputStream(fileName)), cipher);// 输出流//新文件名String fileNewName = fileName.substring(0,fileName.indexOf("."))+"Decrypt"+fileName.substring(fileName.indexOf("."));BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(fileNewName));int i;do {i = in.read();if (i != -1)out.write(i);} while (i != -1);in.close();out.close();System.out.println("success when decrypt the file");} catch (Exception ey5) {System.out.println("error when decrypt the file");}}catch (Exception e){e.printStackTrace();}}/**** 生成秘钥字符串*/public static void main(String[] args) throws Exception{// 以DES的方式初始化Key生成器KeyGenerator keyGenerator = KeyGenerator.getInstance("DES");keyGenerator.init(56);// 设置密钥的长度为56位// 生成一个KeySecretKey generateKey = keyGenerator.generateKey();// 转变为字节数组byte[] encoded = generateKey.getEncoded();// 生成密钥字符串String encodeHexString = Hex.encodeHexString(encoded);System.out.println("Key ： " + encodeHexString);}
}

5.测试

 @Testpublic void shouldAnswerWithTrue() throws Exception{/* List<Object> list = new ArrayList<>();Map<String,String> map1 = new HashMap<>();map1.put("username","张三");map1.put("password","李四");Map<String,String> map2 = new HashMap<>();map2.put("username","张三");map2.put("password","李四");list.add(map1);list.add(map2);*///第一步：生成xml文件//DataToXml.DataToJsonOrXml(list,"xml");//加密//DESCryptoXml.encrypt("F:\\IDEAWorkspaces\\ceshiDataToXml\\20180822.xml");//解密//DESCryptoXml.decrypt("F:\\IDEAWorkspaces\\ceshiDataToXml\\20180822Encrypt.xml");}