XStream 工具类 [ XmlUtil ]

pom.xml



&lt;dependency&gt;

    &lt;groupId&gt;com.thoughtworks.xstream&lt;/groupId&gt;

    &lt;artifactId&gt;xstream&lt;/artifactId&gt;

    &lt;version&gt;1.4.10&lt;/version&gt;

&lt;/dependency&gt;

XmlUtil.java



package com.app.core.util;

import com.thoughtworks.xstream.XStream;

import com.thoughtworks.xstream.core.util.QuickWriter;

import com.thoughtworks.xstream.io.HierarchicalStreamWriter;

import com.thoughtworks.xstream.io.naming.NoNameCoder;

import com.thoughtworks.xstream.io.xml.CompactWriter;

import com.thoughtworks.xstream.io.xml.DomDriver;

import com.thoughtworks.xstream.io.xml.PrettyPrintWriter;

import com.thoughtworks.xstream.io.xml.XppDriver;

import java.io.StringWriter;

import java.io.Writer;

import java.nio.charset.StandardCharsets;

public class XmlUtil {

    /**

     * 转换不带CDDATA的XML

     *

     * @return

     * @

     */

    private static XStream getXStream() {

        // 实例化XStream基本对象

        XStream xstream = new XStream(new DomDriver(StandardCharsets.UTF_8.name(), new NoNameCoder() {

            // 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”

            public String encodeNode(String name) {

                return name;

            }

        }));

        // 忽视XML与JAVABEAN转换时，XML中的字段在JAVABEAN中不存在的部分

        xstream.ignoreUnknownElements();

        return xstream;

    }

    /**

     * 转换带CDDATA的XML

     *

     * @return

     * @

     */

    private static XStream getXStreamWithCData() {

        // 实例化XStream扩展对象

        XStream xstream = new XStream(new XppDriver() {

            // 扩展xstream，使其支持CDATA块

            public HierarchicalStreamWriter createWriter(Writer out) {

                return new PrettyPrintWriter(out) {

                    // 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”

                    public String encodeNode(String name) {

                        return name;

                    }

                    // 对所有xml节点的转换都增加CDATA标记

                    protected void writeText(QuickWriter writer, String text) {

                        writer.write("&lt;![CDATA[");

                        writer.write(text);

                        writer.write("]]&gt;");

                    }

                };

            }

        });

        // 忽视XML与JAVABEAN转换时，XML中的字段在JAVABEAN中不存在的部分

        xstream.ignoreUnknownElements();

        return xstream;

    }

    /**

     * 以压缩的方式输出XML

     *

     * @param obj

     * @return

     */

    public static String toCompressXml(Object obj) {

        XStream xstream = getXStream();

        StringWriter sw = new StringWriter();

        // 识别obj类中的注解

        xstream.processAnnotations(obj.getClass());

        // 设置JavaBean的类别名

        xstream.aliasType("xml", obj.getClass());

        xstream.marshal(obj, new CompactWriter(sw));

        return sw.toString();

    }

    /**

     * 以格式化的方式输出XML

     *

     * @param obj

     * @return

     */

    public static String toXml(Object obj) {

        XStream xstream = getXStream();

        // 识别obj类中的注解

        xstream.processAnnotations(obj.getClass());

        // 设置JavaBean的类别名

        xstream.aliasType("xml", obj.getClass());

        return xstream.toXML(obj);

    }

    /**

     * 转换成JavaBean

     *

     * @param xmlStr

     * @param cls

     * @return

     */

    @SuppressWarnings("unchecked")

    public static &lt;T&gt; T toBean(String xmlStr, Class&lt;T&gt; cls) {

        XStream xstream = getXStream();

        // 识别cls类中的注解

        xstream.processAnnotations(cls);

        // 设置JavaBean的类别名

        xstream.aliasType("xml", cls);

        T t = (T) xstream.fromXML(xmlStr);

        return t;

    }

    /**

     * 以格式化的方式输出XML

     *

     * @param obj

     * @return

     */

    public static String toXmlWithCData(Object obj) {

        XStream xstream = getXStreamWithCData();

        // 识别obj类中的注解

        xstream.processAnnotations(obj.getClass());

        // 设置JavaBean的类别名

        xstream.aliasType("xml", obj.getClass());

        return xstream.toXML(obj);

    }

    /**

     * 转换成JavaBean

     *

     * @param xmlStr

     * @param cls

     * @return

     */

    @SuppressWarnings("unchecked")

    public static &lt;T&gt; T toBeanWithCData(String xmlStr, Class&lt;T&gt; cls) {

        XStream xstream = getXStreamWithCData();

        // 识别cls类中的注解

        xstream.processAnnotations(cls);

        // 设置JavaBean的类别名

        xstream.alias("xml", cls);

        T t = (T) xstream.fromXML(xmlStr);

        return t;

    }

}

巴特西

XStream 工具类 [ XmlUtil ]

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