forked from rongchao/epmet-cloud-rizhao
zxc
5 years ago
4 changed files with 237 additions and 41 deletions
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package com.epmet.util; |
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import com.google.common.collect.Lists; |
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import com.thoughtworks.xstream.XStream; |
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import com.thoughtworks.xstream.core.util.QuickWriter; |
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import com.thoughtworks.xstream.io.HierarchicalStreamWriter; |
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import com.thoughtworks.xstream.io.naming.NoNameCoder; |
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import com.thoughtworks.xstream.io.xml.CompactWriter; |
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import com.thoughtworks.xstream.io.xml.DomDriver; |
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import com.thoughtworks.xstream.io.xml.PrettyPrintWriter; |
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import com.thoughtworks.xstream.io.xml.XppDriver; |
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import java.io.StringWriter; |
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import java.io.Writer; |
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import java.nio.charset.StandardCharsets; |
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import java.util.List; |
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public class XmlUtil { |
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/** |
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* 转换不带CDDATA的XML |
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* |
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* @return |
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* @ |
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*/ |
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private static XStream getXStream() { |
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// 实例化XStream基本对象
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XStream xstream = new XStream(new DomDriver(StandardCharsets.UTF_8.name(), new NoNameCoder() { |
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// 不对特殊字符进行转换，避免出现重命名字段时的“双下划线”
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@Override |
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public String encodeNode(String name) { |
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return name; |
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} |
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})); |
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// 忽视XML与JAVABEAN转换时，XML中的字段在JAVABEAN中不存在的部分
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xstream.ignoreUnknownElements(); |
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return xstream; |
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} |
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/** |
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* 转换带CDDATA的XML |
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* |
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* @return |
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* @ |
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*/ |
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private static XStream getXStreamWithCData(List<String> ignoreCDATA) { |
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// 实例化XStream扩展对象
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XStream xstream = new XStream(new XppDriver() { |
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// 扩展xstream，使其支持CDATA块
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@Override |
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public HierarchicalStreamWriter createWriter(Writer out) { |
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return new PrettyPrintWriter(out) { |
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boolean cdata = true; |
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// 不对特殊字符进行转换，避免出现重命名字段时的“双下划线”
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@Override |
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public String encodeNode(String name) { |
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if(!ignoreCDATA.isEmpty()){ |
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for(String str:ignoreCDATA){ |
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if(str.equals(name)){ |
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cdata=false; |
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return name; |
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} |
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} |
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} |
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cdata=true; |
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return name; |
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} |
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// 对xml节点的转换都增加CDATA标记
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@Override |
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protected void writeText(QuickWriter writer, String text) { |
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if (cdata) { |
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writer.write("<![CDATA["); |
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writer.write(text); |
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writer.write("]]>"); |
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} else { |
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writer.write(text); |
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} |
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} |
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}; |
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} |
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}); |
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// 忽视XML与JAVABEAN转换时，XML中的字段在JAVABEAN中不存在的部分
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xstream.ignoreUnknownElements(); |
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return xstream; |
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} |
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/** |
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* 以压缩的方式输出XML |
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* |
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* @param obj |
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* @return |
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*/ |
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public static String toCompressXml(Object obj) { |
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XStream xstream = getXStream(); |
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StringWriter sw = new StringWriter(); |
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// 识别obj类中的注解
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xstream.processAnnotations(obj.getClass()); |
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// 设置JavaBean的类别名
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xstream.aliasType("xml", obj.getClass()); |
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xstream.marshal(obj, new CompactWriter(sw)); |
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return sw.toString(); |
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} |
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/** |
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* 以格式化的方式输出XML |
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* |
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* @param obj |
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* @return |
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*/ |
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public static String toXml(Object obj) { |
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XStream xstream = getXStream(); |
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// 识别obj类中的注解
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xstream.processAnnotations(obj.getClass()); |
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// 设置JavaBean的类别名
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xstream.aliasType("xml", obj.getClass()); |
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return xstream.toXML(obj); |
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} |
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/** |
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* 转换成JavaBean |
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* |
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* @param xmlStr |
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* @param cls |
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* @return |
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*/ |
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@SuppressWarnings("unchecked") |
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public static <T> T toBean(String xmlStr, Class<T> cls) { |
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XStream xstream = getXStream(); |
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// 识别cls类中的注解
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xstream.processAnnotations(cls); |
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// 设置JavaBean的类别名
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xstream.aliasType("xml", cls); |
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T t = (T) xstream.fromXML(xmlStr); |
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return t; |
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} |
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/** |
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* 以格式化的方式输出XML |
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* |
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* @param obj |
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* @return |
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*/ |
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public static String toXmlWithCData(Object obj,List<String> ignoreCDAA) { |
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XStream xstream = getXStreamWithCData(ignoreCDAA); |
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// 识别obj类中的注解
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xstream.processAnnotations(obj.getClass()); |
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// 设置JavaBean的类别名
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xstream.aliasType("xml", obj.getClass()); |
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return xstream.toXML(obj); |
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} |
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/** |
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* 转换成JavaBean |
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* |
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* @param xmlStr |
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* @param cls |
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* @return |
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*/ |
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@SuppressWarnings("unchecked") |
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public static <T> T toBeanWithCData(String xmlStr, Class<T> cls) { |
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XStream xstream = getXStreamWithCData(null); |
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// 识别cls类中的注解
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xstream.processAnnotations(cls); |
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// 设置JavaBean的类别名
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xstream.alias("xml", cls); |
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T t = (T) xstream.fromXML(xmlStr); |
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return t; |
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} |
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} |
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