XML工具类(Java)

2022-07-15 80酷酷网 80kuku.com

　　xml

XML工具类
package com.company.cpc.offlinelog.dao;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.Writer;
import java.util.List;
//需要引用castor.jar文件
import org.exolab.castor.mapping.Mapping;
import org.exolab.castor.mapping.MappingException;
import org.exolab.castor.xml.MarshalException;
import org.exolab.castor.xml.Marshaller;
import org.exolab.castor.xml.Unmarshaller;
import org.exolab.castor.xml.ValidationException;
import org.xml.sax.InputSource;
import com.zte.ecc.util.tracer.Debug;
/**
* 类名称:XmlFileManager
* 内容摘要：该类是XML工具类
*/
public class XmlFileManager {
/**
* 方法名称：objectListToXMLString
* 内容摘要：把对象编组成XML
* param mappingXMLString 映射的XML串
* param containerClass   编组类
* return String 返回XML
* throws IOException
* throws MappingException
* throws MarshalException
* throws ValidationException
*/
public static String objectListToXMLString(
String mappingXMLString,
Object containerClass)
throws IOException, MappingException, MarshalException, ValidationException {
if (containerClass == null) {
   Debug.println("containerClass is NULL!!!!!");
   return "";
}
//准备Mapping
Mapping mapping = new Mapping();
Reader reader = new StringReader(mappingXMLString);
InputSource is = new InputSource(reader);
mapping.loadMapping(is);
//准备Writer
StringWriter writer = new StringWriter();
Marshaller marshaller = new Marshaller(writer);
//开始编组
marshaller.setMapping(mapping);
marshaller.setEncoding("gb2312");
marshaller.marshal(containerClass);
StringBuffer bf = writer.getBuffer();
writer.close();
return bf.toString();
}
/**
*
* 方法名称：XmlToObjectList
* 内容摘要：把XML解组成对象
* param mappingXMLString 映射的XML串
* param xmlString 描述数据的XML串
* return Object
* throws IOException
* throws MappingException
* throws MarshalException
* throws ValidationException
*/
public static Object XmlToObjectList(
String mappingXMLString,
String xmlString)
throws IOException, MappingException, MarshalException, ValidationException {
//准备Mapping
StringReader mapingReader = new StringReader(mappingXMLString);
InputSource is = new InputSource(mapingReader);
Mapping mapping = new Mapping();
mapping.loadMapping(is);
//准备Reader
Reader reader = new StringReader(xmlString);
//开始解组
Unmarshaller unmarshaller = new Unmarshaller(mapping);
Object containerClass = unmarshaller.unmarshal(reader);
reader.close();
return containerClass;
}
/**
*
* 方法名称：saveToXMLFile
* 内容摘要：把对象编组成XML文件
* param xmlFileName 文件名
* param mappingFileName 映射文件名
* param containerClass
* throws IOException
* throws MappingException
* throws MarshalException
* throws ValidationException
*/
public static void saveToXMLFile(
String xmlFileName,
String mappingFileName,
Object containerClass)
throws IOException, MappingException, MarshalException, ValidationException {
if (containerClass == null) {
   Systen.out.println("containerClass is NULL!!!!!");
   return;
}
//准备Mapping
Mapping mapping = new Mapping();
mapping.loadMapping(mappingFileName);
//准备Writer
File file = new File(xmlFileName);
Writer writer = new FileWriter(file);
Marshaller marshaller = new Marshaller(writer);
//开始编组
marshaller.setMapping(mapping);
marshaller.setEncoding("gb2312");
marshaller.marshal(containerClass);
writer.close();
}
/**
*
* 方法名称：loadFromXMLFile
* 内容摘要：把XML文件解组成对象
* param xmlFileName
* param mappingFileName
* return
* throws IOException
* throws MappingException
* throws MarshalException
* throws ValidationException
*/
public static Object loadFromXMLFile(
String xmlFileName,
String mappingFileName)
throws IOException, MappingException, MarshalException, ValidationException {
//准备Mapping
Mapping mapping = new Mapping();
mapping.loadMapping(mappingFileName);
//准备Reader
Reader reader = new FileReader(xmlFileName);
//开始解组
Unmarshaller unmarshaller = new Unmarshaller(mapping);
Object containerClass = unmarshaller.unmarshal(reader);
reader.close();
return containerClass;
}
/**
*
* 方法名称：readerToString
* 内容摘要：把Reader流中的数据变为字符串
* param reader
* param bfferSize
* return
*/
public static String readerToString(Reader reader, int bfferSize) {
StringBuffer sb = new StringBuffer();
char[] b = new char[bfferSize];
int n = 0;
try {
   while ((n = reader.read(b)) > 0) {
    System.out.println("read:" + n);
    sb.append(b, 0, n);
   }
} catch (IOException e) {
   // TODO 自动生成 catch 块
   e.printStackTrace();
}
return sb.toString();
}
/**
* 方法名称：objectListToXMLString
* 内容摘要：把对象编组成XML
* param mappingFileName 映射文件名
* param containerClass   编组类
* return String 返回XML
* throws IOException
* throws MappingException
* throws MarshalException
* throws ValidationException
*/
public static String objectListToXMLStr(
String mappingFileName,
Object containerClass)
throws IOException, MappingException, MarshalException, ValidationException {
if (containerClass == null) {
   Debug.println("containerClass is NULL!!!!!");
   return "";
}

//准备Mapping
Mapping mapping = new Mapping();
mapping.loadMapping(mappingFileName);
//准备Writer
StringWriter writer = new StringWriter();
Marshaller marshaller = new Marshaller(writer);

//开始编组
marshaller.setMapping(mapping);
marshaller.setEncoding("gb2312");
marshaller.marshal(containerClass);
StringBuffer bf = writer.getBuffer();
writer.close();

return bf.toString();
}
/**
*
* 方法名称：XmlToObjectList
* 内容摘要：把XML解组成对象
* param mappingFileName 映射文件名
* param xmlString 描述数据的XML串
* return
* throws IOException
* throws MappingException
* throws MarshalException
* throws ValidationException
*/
public static Object XmlStrToObjectList(
String mappingFileName,
String xmlString)
throws IOException, MappingException, MarshalException, ValidationException {
//准备Mapping
Mapping mapping = new Mapping();
mapping.loadMapping(mappingFileName);
//准备Reader
Reader reader = new StringReader(xmlString);
//开始解组
Unmarshaller unmarshaller = new Unmarshaller(mapping);
Object containerClass = unmarshaller.unmarshal(reader);
reader.close();
return containerClass;
}
/**
* 方法名称：XmlToObjectList
* 内容摘要：得到资源文件的绝对路径文件名
* param sResourceName 资源名称
* return String
*/
public static String getResourceFilePath(String sResourceName) {
if (!sResourceName.startsWith("/")) {
   sResourceName = "/" + sResourceName;
}
java.net.URL classUrl = XmlFileManager.class.getResource(sResourceName);
if (classUrl == null) {
   System.out.println(
    "\nResource '"
     + sResourceName
     + "' not found in \n'"
     + System.getProperty("java.class.path")
     + "'");
   return null;
} else {
   System.out.println(
    "\nResource '"
     + sResourceName
     + "' found in \n'"
     + classUrl.getFile()
     + "'");
   return classUrl.getFile();
}
}
}