將資料庫查詢資料封裝到XML檔案中，進行格式化處理，並進行加密操作，和解密操作
阿新 • • 發佈：2018-12-05
1.pom檔案
<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物件依賴的jar包 開始--> <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依賴架包下載結束 --> </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.將查詢資料封裝到XML檔案中，並進行格式化處理
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查詢資料封裝到xml檔案中 */ public class DataToXml { //預設值 private static final String JSON="json"; private static final String XML="xml"; /** * 工具類入口 * @param type 資料型別 json / xml * @return 字串 */ public static void DataToJsonOrXml(Object obj,String type) throws Exception{ //大小寫不影響 String str=""; if(JSON.equalsIgnoreCase(type)&&JSON.equals(type)){ //生成json資料 str=toJsonString(obj); }else if(XML.equalsIgnoreCase(type)&&XML.equals(type)){ //生成xml資料 str=toXml(obj); }else{ //預設使用 json ， 引數錯誤的話 ，預設 為json str=toJsonString(obj); } str = XmlFormatter.format(str); writeToXml(str); } /** * 轉 json 物件 * @param obj 資料 * @return json物件 字串 */ private static String toJsonString(Object obj){ if(obj==null) { obj=""; } Map<String, Object> map=toKeyVal(obj); JSONObject jsonObject=JSONObject.fromObject(map); return jsonObject.toString(); } /** * 轉xml 格式 ：字串拼裝的格式 * @param obj 資料 * @return xml資料 */ 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(); } /** * 用來封裝資料 * @param obj 資料 * @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的話 //遞迴 呼叫 builder.append(mapToxml((JSONObject) object.get(key))); }else if(object.get(key) instanceof JSONArray){ //如果是 JSONArray的話 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{ //專案根路徑 String relativelyPath=System.getProperty("user.dir"); String fileName = relativelyPath+"\\"+new SimpleDateFormat("yyyyMMdd").format(new Date())+".xml"; //1.生成xml檔案 FileWriter fw=new FileWriter(fileName); BufferedWriter bw=new BufferedWriter(fw); bw.write(str); bw.close(); fw.close(); } }
3.XML檔案的格式化操作
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方式加密和解密檔案
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 {
/**
* 檔案加密
*/
public static void encrypt(String fileName) {
try {
String key = "abf894ba2a0e798f";
// 再把我們的字串轉變為位元組陣列，可以用於另一方使用，驗證
byte[] decodeHex = Hex.decodeHex(key.toCharArray());
// 生成金鑰物件
SecretKeySpec secretKeySpec = new SecretKeySpec(decodeHex, "DES");
// 獲取加解密例項
Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
// 初始化加密模式
cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);
// 讀入並加密檔案
try {
// 輸入流
BufferedInputStream in = new BufferedInputStream(
new FileInputStream(fileName));
// 輸出流
//新檔名
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();
}
}
/**
* 檔案解密
* @param fileName
*/
public static void decrypt(String fileName) {
try {
String key = "abf894ba2a0e798f";
// 再把我們的字串轉變為位元組陣列，可以用於另一方使用，驗證
byte[] decodeHex = Hex.decodeHex(key.toCharArray());
// 生成金鑰物件
SecretKeySpec secretKeySpec = new SecretKeySpec(decodeHex, "DES");
// 獲取加解密例項
Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
// 初始化加密模式
cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);
try {
// 輸入流
CipherInputStream in = new CipherInputStream(
new BufferedInputStream(new FileInputStream(fileName)), cipher);
// 輸出流
//新檔名
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();
}
}
/***
* 生成祕鑰字串
*/
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);// 設定金鑰的長度為56位
// 生成一個Key
SecretKey generateKey = keyGenerator.generateKey();
// 轉變為位元組陣列
byte[] encoded = generateKey.getEncoded();
// 生成金鑰字串
String encodeHexString = Hex.encodeHexString(encoded);
System.out.println("Key ： " + encodeHexString);
}
}
5.測試
@Test
public void shouldAnswerWithTrue() throws Exception
{
/* List<Object> list = new ArrayList<>();
Map<String,String> map1 = new HashMap<>();
map1.put("username","張三");
map1.put("password","李四");
Map<String,String> map2 = new HashMap<>();
map2.put("username","張三");
map2.put("password","李四");
list.add(map1);
list.add(map2);*/
//第一步：生成xml檔案
//DataToXml.DataToJsonOrXml(list,"xml");
//加密
//DESCryptoXml.encrypt("F:\\IDEAWorkspaces\\ceshiDataToXml\\20180822.xml");
//解密
//DESCryptoXml.decrypt("F:\\IDEAWorkspaces\\ceshiDataToXml\\20180822Encrypt.xml");
}