本文主要是介绍xstream运用,JAVA对象转xml,xml转JAVA对象,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
目录
xstream
优点:
缺点:
XStream的应用场景
用到的依赖
代码实现
xml标签对应的实体类
Header
Package
Request
Response
TradeInfo
工具类
XmlUtils
执行结果
xstream
XStream是一个Java类库,主要用于将对象序列化为XML(或JSON)或将XML(或JSON)反序列化为对象。XStream使用Java反射机制对要进行序列化的对象树的结构进行探索,无需对对象进行修改。它可以序列化内部字段,包括私有(private)和最终(final)字段,并支持非公开类以及内部类。在缺省情况下,XStream不需要配置映射关系,对象和字段将映射为同名XML元素。
优点:
- 易用性:XStream不需要额外的辅助类或映射文件,使得XML序列化不再繁琐。
- 灵活性:支持多种数据类型转换,包括用户自定义的类型转换器。
- 可读性:输出通常比其他工具更清晰和易于阅读。
缺点:
- 效率:相对于某些工具(如XMLEncoder),XStream在处理大型数据集时可能会较慢,因为它需要在每个对象实例上运行解析器。
- 内存使用:XStream使用流操作可能导致较高的内存使用,特别是在处理大型数据集时。
XStream的应用场景
XStream的常见用途包括对象传输、持久化、配置以及单元测试等。它在许多项目中,特别是在支付API对接时,被用于实现Java对象和XML文档的互转。
用到的依赖
<!--XML解析--><dependency><groupId>com.thoughtworks.xstream</groupId><artifactId>xstream</artifactId><version>1.4.20</version></dependency><dependency><groupId>dom4j</groupId><artifactId>dom4j</artifactId><version>1.6.1</version></dependency>
代码实现
<!--xml报文-->
<?xml version='1.0' encoding='UTF-8'?>
<Package><Header><RequestType>131</RequestType><SystemNo>001</SystemNo><SendTime>2024-06-05 09:53:38</SendTime><Status>100</Status><ErrorMessage /></Header><Sign>NgJzJyhoeXYd/TJvJitByhUR1UVMJ+FjuMl4WVBjP0CsOM6owyX9nCn1c/IL+OpVeSYkl4k60Du8nLa13wRB1oqFA8I2zel9+Xiq7lAL0otIcdww4F9i5uULk2wpq8ApXcghO5suL54FPOutc+2gWNUUmdP6fb2/L2RFKOlcBig=</Sign><Response><DepartmentCode>5</DepartmentCode><TransSourceCode>0</TransSourceCode><PayNo /><PayAmount>100</PayAmount><RealPayAmount>100</RealPayAmount><PaymentTime>2024-06-05 09:50:49</PaymentTime><DealTime>2024-06-05 09:50:49</DealTime><PayType>1</PayType><PlatformCode>35</PlatformCode><PlatformName /><OrderId>1000000001678451</OrderId><OrderStatus>2</OrderStatus><PageUrl>https://blog.csdn.net/weixin_59383491?type=blog</PageUrl><NotifyUrl>https://blog.csdn.net/weixin_59383491?type=blog</NotifyUrl><AutoErrMsg /><BusinessTypeDetail /><BusinessType /><TradeList><TradeIfo><ProductId /><ApplyPolicyNo /><PersonnelName /><PlanCode /><ProductName>一百减一是零</ProductName><BatchDetailNo>1010000202400000065</BatchDetailNo><ProductType>7</ProductType><BatchPolicyNo /><TradeDetailNo /><TradeAmt>100</TradeAmt><OriginCode /><OriginTradeNo /></TradeIfo></TradeList></Response>
</Package>
xml标签对应的实体类
Header
package com.yun.greedy.modules.util.xstream;import com.thoughtworks.xstream.annotations.XStreamAlias;
import lombok.Data;@XStreamAlias("Header")
@Data
public class Header {@XStreamAlias("RequestType")private String requestType;@XStreamAlias("SystemNo")private String systemNo;@XStreamAlias("SendTime")private String sendTime;@XStreamAlias("Status")private String status;@XStreamAlias("ErrorMessage")private String errorMessage;
}
Package
package com.yun.greedy.modules.util.xstream;import com.thoughtworks.xstream.annotations.XStreamAlias;
import lombok.Data;@XStreamAlias("Package")
@Data
public class Package {@XStreamAlias("Header")private Header head;@XStreamAlias("Sign")private String sign;@XStreamAlias("Request")private Request request;@XStreamAlias("Response")private Response response;
}
Request
package com.yun.greedy.modules.util.xstream;import com.thoughtworks.xstream.annotations.XStreamAlias;
import lombok.Data;import java.util.List;@Data
@XStreamAlias("Request")
public class Request {@XStreamAlias("DepartmentCode")private String departmentCode;@XStreamAlias("TransSourceCode")private String transSourceCode;@XStreamAlias("PayType")private String payType;@XStreamAlias("PlatformCode")private String platformCode;@XStreamAlias("BankType")private String bankType;@XStreamAlias("PayAmount")private String payAmount;@XStreamAlias("PageUrl")private String pageUrl;@XStreamAlias("NotifyUrl")private String notifyUrl;@XStreamAlias("TradeNo")private String tradeNo;@XStreamAlias("TradeList")private List<TradeInfo> tradeList;
}
Response
package com.yun.greedy.modules.util.xstream;import com.thoughtworks.xstream.annotations.XStreamAlias;
import lombok.Data;import java.util.List;@Data
@XStreamAlias("Response")
public class Response {@XStreamAlias("DepartmentCode")private String departmentCode;@XStreamAlias("TransSourceCode")private String transSourceCode;@XStreamAlias("PayAmount")private String payAmount;@XStreamAlias("RealPayAmount")private String realPayAmount;@XStreamAlias("PaymentTime")private String paymentTime;@XStreamAlias("PayType")private String payType;@XStreamAlias("PlatformCode")private String platformCode;@XStreamAlias("PlatformName")private String platformName;@XStreamAlias("TradeNo")private String tradeNo;@XStreamAlias("OrderId")private String orderId;@XStreamAlias("OrderStatus")private String orderStatus;@XStreamAlias("PageUrl")private String pageUrl;@XStreamAlias("NotifyUrl")private String notifyUrl;@XStreamAlias("AutoErrMsg")private String autoErrMsg;@XStreamAlias("DealTime")private String dealTime;@XStreamAlias("PayNo")private String payNo;@XStreamAlias("BusinessTypeDetail")private String businessTypeDetail;@XStreamAlias("BusinessType")private String businessType;@XStreamAlias("TradeList")private List<TradeInfo> tradeList;
}
TradeInfo
package com.yun.greedy.modules.util.xstream;import com.thoughtworks.xstream.annotations.XStreamAlias;
import lombok.Data;@Data
@XStreamAlias("TradeIfo")
public class TradeInfo {@XStreamAlias("ProductId")private String productId;@XStreamAlias("ApplyPolicyNo")private String applyPolicyNo;@XStreamAlias("PlanCode")private String planCode;@XStreamAlias("BatchPolicyNo")private String batchPolicyNo;@XStreamAlias("BatchDetailNo")private String batchDetailNo;@XStreamAlias("TradeDetailNo")private String tradeDetailNo;@XStreamAlias("PersonnelName")private String personnelName;@XStreamAlias("CertificateNo")private String certificateNo;@XStreamAlias("MobileTelephone")private String mobileTelephone;@XStreamAlias("TradeAmt")private String tradeAmt;@XStreamAlias("ProductType")private String productType;@XStreamAlias("ProductName")private String productName;@XStreamAlias("ViewProductUrl")private String viewProductUrl;@XStreamAlias("TradeCount")private String tradeCount;@XStreamAlias("InsuranceBeginTime")private String insuranceBeginTime;@XStreamAlias("OriginCode")private String originCode;@XStreamAlias("OriginTradeNo")private String originTradeNo;
}
工具类
XmlUtils
package com.yun.greedy.modules.util;import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.Dom4JDriver;
import com.thoughtworks.xstream.security.AnyTypePermission;
import com.yun.greedy.modules.util.xstream.Package;
import com.yun.greedy.modules.util.xstream.*;
import org.dom4j.DocumentFactory;
import org.dom4j.io.OutputFormat;import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.List;public class XmlUtils {/** 将XML报文转化为java对象*/public static Object makeObjectFromXml(String docStr, Class[] classList) {XStream xstream = new XStream(new Dom4JDriver());//由于对象默认开启安全防护,尽量限制最低权限xstream.addPermission(AnyTypePermission.ANY);xstream.processAnnotations(classList);return xstream.fromXML(docStr);}/*** 将对象转化为xml报文** @param object* @param b 是否显示为空的节点* @return*/public static String objectToXml(Object object, boolean b) {if (b) {replaceNullValue(object);}OutputFormat outputFormat = new OutputFormat();outputFormat.setEncoding("UTF-8");outputFormat.setNewLineAfterDeclaration(false);//对象名称是否显示路径
// outputFormat.setIndent(" ");outputFormat.setNewlines(true);//XML节点换行XStream xstream = new XStream(new Dom4JDriver(new DocumentFactory(), outputFormat));xstream.autodetectAnnotations(true);return xstream.toXML(object);}/*** changeFiledValue(替换字符串为null值的情况)** @param obj* @return void*/private static void replaceNullValue(Object obj) {if (obj == null) {return;}Field[] fields = obj.getClass().getDeclaredFields();for (Field field : fields) {try {String type = field.getType().getName();field.setAccessible(true);Object value = field.get(obj);if ("java.lang.String".equals(type)) {String genericStr = field.toGenericString();if (!genericStr.contains("final")) {field.set(obj, (value == null ? "" : value));}} else if ("java.util.List".equals(type)) {List list = (List) value;if (list != null && list.size() > 0) {for (int i = 0; i < list.size(); i++) {Object subObj = list.get(i);replaceNullValue(subObj);}}} else {replaceNullValue(value);}} catch (IllegalArgumentException e) {e.printStackTrace();System.out.println("返回报文对象替换null值出错:" + e.getMessage());} catch (IllegalAccessException e) {e.printStackTrace();System.out.println("返回报文对象替换null值出错:" + e.getMessage());}}}public static void main(String[] args) {String strXML = "<?xml version='1.0' encoding='UTF-8'?>\n" +"<Package>\n" +" <Header>\n" +" <RequestType>131</RequestType>\n" +" <SystemNo>001</SystemNo>\n" +" <SendTime>2024-06-05 09:53:38</SendTime>\n" +" <Status>100</Status>\n" +" <ErrorMessage />\n" +" </Header>\n" +" <Sign>NgJzJyhoeXYd/TJvJitByhUR1UVMJ+FjuMl4WVBjP0CsOM6owyX9nCn1c/IL+OpVeSYkl4k60Du8nLa13wRB1oqFA8I2zel9+Xiq7lAL0otIcdww4F9i5uULk2wpq8ApXcghO5suL54FPOutc+2gWNUUmdP6fb2/L2RFKOlcBig=</Sign>\n" +" <Response>\n" +" <DepartmentCode>5</DepartmentCode>\n" +" <TransSourceCode>0</TransSourceCode>\n" +" <PayNo />\n" +" <PayAmount>100</PayAmount>\n" +" <RealPayAmount>100</RealPayAmount>\n" +" <PaymentTime>2024-06-05 09:50:49</PaymentTime>\n" +" <DealTime>2024-06-05 09:50:49</DealTime>\n" +" <PayType>1</PayType>\n" +" <PlatformCode>35</PlatformCode>\n" +" <PlatformName />\n" +" <OrderId>1000000001678451</OrderId>\n" +" <OrderStatus>2</OrderStatus>\n" +" <PageUrl>https://blog.csdn.net/weixin_59383491?type=blog</PageUrl>\n" +" <NotifyUrl>https://blog.csdn.net/weixin_59383491?type=blog</NotifyUrl>\n" +" <AutoErrMsg />\n" +" <BusinessTypeDetail />\n" +" <BusinessType />\n" +" <TradeList>\n" +" <TradeIfo>\n" +" <ProductId />\n" +" <ApplyPolicyNo />\n" +" <PersonnelName />\n" +" <PlanCode />\n" +" <ProductName>一百减一是零</ProductName>\n" +" <BatchDetailNo>1010000202400000065</BatchDetailNo>\n" +" <ProductType>7</ProductType>\n" +" <BatchPolicyNo />\n" +" <TradeDetailNo />\n" +" <TradeAmt>100</TradeAmt>\n" +" <OriginCode />\n" +" <OriginTradeNo />\n" +" </TradeIfo>\n" +" </TradeList>\n" +" </Response>\n" +"</Package>";Class[] classes = {Package.class, Header.class, Response.class, TradeInfo.class};Package packageObj = (Package) XmlUtils.makeObjectFromXml(strXML, classes);String str = null != packageObj ?"XML解析成功!" + packageObj.toString() : "报文解析失败!";System.out.println("========XML转对象========");System.out.println(str);Request re = new Request();re.setDepartmentCode("123");re.setTransSourceCode("TS");re.setBankType("CS");re.setPageUrl("https://blog.csdn.net/weixin_59383491?type=blog");TradeInfo tradeInfo = new TradeInfo();tradeInfo.setPersonnelName("一百减一是零");tradeInfo.setViewProductUrl("https://blog.csdn.net/weixin_59383491?type=blog");TradeInfo tradeInfo2 = new TradeInfo();tradeInfo2.setPersonnelName("一百减一是零");tradeInfo2.setViewProductUrl("https://blog.csdn.net/weixin_59383491?type=blog");List<TradeInfo> tradeInfoList = new ArrayList<>();tradeInfoList.add(tradeInfo);tradeInfoList.add(tradeInfo2);re.setTradeList(tradeInfoList);System.out.println("========对象转XML========");String s = XmlUtils.objectToXml(re, false);System.out.println(s);}
}
执行结果
这篇关于xstream运用,JAVA对象转xml,xml转JAVA对象的文章就介绍到这儿,希望我们推荐的文章对编程师们有所帮助!