xml与实体互相转换

我们在请求国家系统经常会遇到webservice 接口他们一般传输使用xml 所以使用xml就会遇到和实体接互相转换以及实体与xml
不对应怎么处理。接下来提供一种解决方案他可以处理xml 和实体随意转换！

建立实体（模拟发票实体）

package com.dairuijie.test.bean;import java.util.List;import com.thoughtworks.xstream.annotations.XStreamAlias;
import com.thoughtworks.xstream.annotations.XStreamImplicit;/*** * @ClassName: InvoiceBean* @Description:TODO(这里用一句话描述这个类的作用)* @author: drj* @date: 2019年8月11日 下午5:36:39* * @Copyright: 2019**/
@XStreamAlias("invoice")
public class InvoiceBean {/*** 发票id*/@XStreamAlias("invoiceId")private Long invoiceId;/*** 发票号码*/@XStreamAlias("invoiceNum")private String invoiceNum;/*** 发票代码*/@XStreamAlias("invoiceCode")private String invoiceCode;/*** 商品名称*/@XStreamImplicit(itemFieldName="invoiceDetail")private List<InvoiceDetail> invoiceDetail;public Long getInvoiceId() {return invoiceId;}public void setInvoiceId(Long invoiceId) {this.invoiceId = invoiceId;}public String getInvoiceNum() {return invoiceNum;}public void setInvoiceNum(String invoiceNum) {this.invoiceNum = invoiceNum;}public String getInvoiceCode() {return invoiceCode;}public void setInvoiceCode(String invoiceCode) {this.invoiceCode = invoiceCode;}public List<InvoiceDetail> getInvoiceDetail() {return invoiceDetail;}public void setInvoiceDetail(List<InvoiceDetail> invoiceDetail) {this.invoiceDetail = invoiceDetail;}@Overridepublic String toString() {return "InvoiceBean [invoiceId=" + invoiceId + ", invoiceNum=" + invoiceNum + ", invoiceCode=" + invoiceCode+ ", invoiceDetail=" + invoiceDetail + "]";}}
package com.dairuijie.test.bean;import java.math.BigDecimal;import com.thoughtworks.xstream.annotations.XStreamAlias;/*** * @ClassName:  InvoiceDetail   * @Description:TODO(这里用一句话描述这个类的作用)   * @author: drj * @date:   2019年8月11日 下午8:14:50   *     * @Copyright: 2019 **/
@XStreamAlias("invoiceDetail")
public class InvoiceDetail {/*** 货物名称*/@XStreamAlias("goodsName")private String goodsName;/*** 单位*/@XStreamAlias("unit")private String unit;/*** 单价*/@XStreamAlias("price")private BigDecimal price;public String getGoodsName() {return goodsName;}public void setGoodsName(String goodsName) {this.goodsName = goodsName;}public String getUnit() {return unit;}public void setUnit(String unit) {this.unit = unit;}public BigDecimal getPrice() {return price;}public void setPrice(BigDecimal price) {this.price = price;}@Overridepublic String toString() {return "InvoiceDetail [goodsName=" + goodsName + ", unit=" + unit + ", price=" + price + "]";} }

XStreamConvertor xml工具类

package com.dairuijie.test.utils;import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;import org.springframework.oxm.xstream.XStreamMarshaller;import com.dairuijie.test.bean.InvoiceBean;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.XmlFriendlyNameCoder;
import com.thoughtworks.xstream.io.xml.XppDriver;
import com.zl.vtax.base.BusinessException;
/*** * @ClassName:  XStreamConvertor   * @Description:TODO(xml 工具类)   * @author: drj * @date:   2019年8月11日 下午10:35:52   *   * @param <T>  * @Copyright: 2019 **/
public class XStreamConvertor<T> {private static XStreamConvertor<?> instance = null;//单例模式private static Map<String, XStreamMarshaller> xstreamCache = new ConcurrentHashMap<String, XStreamMarshaller>();private static final String XML_TAG = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>";private static final String GBK = "UTF-8";static {instance = new XStreamConvertor<>();}public String toXml(T pojo) throws BusinessException {String clzName = pojo.getClass().getName();XStreamMarshaller xstreamMarshaller = xstreamCache.get(clzName);if (xstreamMarshaller == null) {xstreamMarshaller = new XStreamMarshaller();xstreamMarshaller.setEncoding(GBK);xstreamMarshaller.setStreamDriver(new XppDriver(new XmlFriendlyNameCoder("_-", "_")));xstreamCache.put(clzName, xstreamMarshaller);}XStream xStream = xstreamMarshaller.getXStream();XStream.setupDefaultSecurity(xStream);//防止出現 xStream:Security framework of XStream not initialized, XStream is probably vulnerable.xStream.allowTypes(new Class[]{InvoiceBean.class});//允许转换对象xStream.processAnnotations(pojo.getClass());return XML_TAG + xStream.toXML(pojo).replaceAll("<tiripPackage>", "").replaceAll("&quot;", "\"");}@SuppressWarnings("unchecked")public T fromXml(Class<T> clz, String xml) {String clzName = clz.getName();XStreamMarshaller xstreamMarshaller = xstreamCache.get(clzName);if (xstreamMarshaller == null) {xstreamMarshaller = new XStreamMarshaller();xstreamMarshaller.setEncoding(GBK);xstreamMarshaller.setStreamDriver(new XppDriver(new XmlFriendlyNameCoder("_-", "_")));xstreamCache.put(clzName, xstreamMarshaller);}XStream xStream = xstreamMarshaller.getXStream();xStream.setClassLoader(clz.getClassLoader());xStream.processAnnotations(clz);return (T) xStream.fromXML(xml);}@SuppressWarnings("unchecked")public static XStreamConvertor<Object> getInstance() {return (XStreamConvertor<Object>) instance;}
}

测试类

package com.dairuijie.test.utils;import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.List;import com.dairuijie.test.bean.InvoiceBean;
import com.dairuijie.test.bean.InvoiceDetail;/*** * @ClassName: XmlBeanUtils* @Description:TODO(这里用一句话描述这个类的作用)* @author: drj* @date: 2019年8月11日 下午9:01:31* * @Copyright: 2019**/
public class XmlBeanUtils {public static void main(String[] args) {List<InvoiceDetail> list = new ArrayList<InvoiceDetail>();InvoiceDetail detail = new InvoiceDetail();detail.setGoodsName("牛肉");detail.setPrice(new BigDecimal("99"));detail.setUnit("元");list.add(detail);InvoiceBean bean = new InvoiceBean();bean.setInvoiceCode("99999");bean.setInvoiceId(999L);bean.setInvoiceNum("99999");bean.setInvoiceDetail(list);@SuppressWarnings("rawtypes")XStreamConvertor xmlUtils = XStreamConvertor.getInstance();@SuppressWarnings("unchecked")String xmlstr = xmlUtils.toXml(bean);System.out.println("实体转xml:" + xmlstr);@SuppressWarnings("unchecked")InvoiceBean invoiceBean = (InvoiceBean) xmlUtils.fromXml(InvoiceBean.class, xmlstr);System.out.println("xml转实体: " + invoiceBean);}
}

结果

实体转xml:<?xml version="1.0" encoding="UTF-8"?><invoice><invoiceId>999</invoiceId><invoiceNum>99999</invoiceNum><invoiceCode>99999</invoiceCode><invoiceDetail><goodsName>牛肉</goodsName><unit>元</unit><price>99</price></invoiceDetail>
</invoice>
xml转实体: InvoiceBean [invoiceId=999, invoiceNum=99999, invoiceCode=99999, invoiceDetail=[InvoiceDetail [goodsName=牛肉, unit=元, price=99]]]

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