如何使用apache camel从soap响应中获取值？答案

【问题标题】：How to get the value value from soap response using apache camel?如何使用apache camel从soap响应中获取值？
【发布时间】：2019-02-08 03:44:21
【问题描述】：

我想从下面的肥皂响应中获取 AddResult 的值，即 100：

<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body><AddResponse xmlns="http://tempuri.org/"><AddResult>100</AddResult></AddResponse></soap:Body></soap:Envelope>

下面是java代码：

package com.learncamel.routes.xmlxstream;

import java.util.HashMap;
import java.util.Map;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.dataformat.xstream.XStreamDataFormat;

import com.learncamel.domain.AddResponse;

public class XmlResponseToObject extends RouteBuilder{

    @Override
    public void configure() throws Exception {
        // TODO Auto-generated method stub
        Map<String, String> reference = new HashMap<String, String>();
        reference.put("AddResponse ", AddResponse.class.getName());

        XStreamDataFormat xstreamDataFormat = new XStreamDataFormat();
        xstreamDataFormat.setAliases(reference);
        xstreamDataFormat.setPermissions(AddResponse.class.getName());

        try { 
            from("direct:xmlinput")
            .log("Received Message before unmarshal is ${body} and Headers are ${headers}")
            .unmarshal(xstreamDataFormat)
            .log("Received Message after unmarshal is ${body} and Headers are ${headers}")
            .to("log:?level=INFO&showBody=true");
       } catch(Exception e) {
            e.printStackTrace();
       }       
    }
}

下面是junit代码：

package com.learncamel.routes.xmlxstream;

import org.apache.camel.RoutesBuilder;
import org.apache.camel.test.junit4.CamelTestSupport;
import org.junit.Test;

public class XmlResponseToObjectTest extends CamelTestSupport {

    @Override
    public RoutesBuilder createRouteBuilder() throws Exception {
        return new XmlResponseToObject();       
    }   

    @Test
    public void unMarshalTest() throws InterruptedException{
        //AddResponse addresponse=new AddResponse();
        String input="<?xml version=\"1.0\" encoding=\"utf-8\"?><soap:Envelope xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\"><soap:Body><AddResponse xmlns=\"http://tempuri.org/\"><AddResult>100</AddResult></AddResponse></soap:Body></soap:Envelope>";
        template.sendBody("direct:xmlinput",input);
    }
}

下面是 POJO：

package com.learncamel.domain;



public class AddResponse {

    private String AddResult;

    public String getAddResult() {
        return AddResult;
    }

    public void setAddResult(String addResult) {
        AddResult = addResult;
    }
}

堆栈跟踪

com.thoughtworks.xstream.mapper.CannotResolveClassException：信封在 com.thoughtworks.xstream.mapper.DefaultMapper.realClass（DefaultMapper.java:81）在 com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:125) 在 com.thoughtworks.xstream.mapper.DynamicProxyMapper.realClass(DynamicProxyMapper.java:55) 在 com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:125) 在 com.thoughtworks.xstream.mapper.PackageAliasingMapper.realClass(PackageAliasingMapper.java:88) 在 com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:125) 在 com.thoughtworks.xstream.mapper.ClassAliasingMapper.realClass(ClassAliasingMapper.java:79) 在 com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:125) 在 com.thoughtworks.xstream.mapper.ArrayMapper.realClass(ArrayMapper.java:74) 在 com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:125) 在 com.thoughtworks.xstream.mapper.SecurityMapper.realClass(SecurityMapper.java:71) 在 com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:125) 在 com.thoughtworks.xstream.mapper.CachingMapper.realClass(CachingMapper.java:47) 在 com.thoughtworks.xstream.core.util.HierarchicalStreams.readClassType(HierarchicalStreams.java:29) 在 com.thoughtworks.xstream.core.TreeUnmarshaller.start（TreeUnmarshaller.java:133）在 com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:32) 在 com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1486) 在 com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1454) 在 org.apache.camel.dataformat.xstream.AbstractXStreamWrapper.unmarshal(AbstractXStreamWrapper.java:374) 在 org.apache.camel.processor.UnmarshalProcessor.process（UnmarshalProcessor.java:69）在 org.apache.camel.processor.RedeliveryErrorHandler.process（RedeliveryErrorHandler.java:548）在 org.apache.camel.processor.CamelInternalProcessor.process（CamelInternalProcessor.java:201）在 org.apache.camel.processor.Pipeline.process(Pipeline.java:138) 在 org.apache.camel.processor.Pipeline.process(Pipeline.java:101) 在 org.apache.camel.processor.CamelInternalProcessor.process（CamelInternalProcessor.java:201）在 org.apache.camel.component.direct.DirectProducer.process(DirectProducer.java:62) 在 org.apache.camel.processor.SharedCamelInternalProcessor.process（SharedCamelInternalProcessor.java:186）在 org.apache.camel.processor.SharedCamelInternalProcessor.process(SharedCamelInternalProcessor.java:86) 在 org.apache.camel.impl.ProducerCache$1.doInProducer(ProducerCache.java:541) 在 org.apache.camel.impl.ProducerCache$1.doInProducer(ProducerCache.java:506) 在 org.apache.camel.impl.ProducerCache.doInProducer(ProducerCache.java:369) 在 org.apache.camel.impl.ProducerCache.sendExchange(ProducerCache.java:506) 在 org.apache.camel.impl.ProducerCache.send(ProducerCache.java:229) 在 org.apache.camel.impl.DefaultProducerTemplate.send(DefaultProducerTemplate.java:144) 在 org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:161) 在 org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:168) 在 com.learncamel.routes.xmlxstream.XmlResponseToObjectTest.unMarshalTest(XmlResponseToObjectTest.java:25) 在 sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 在 sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 在 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 在 java.lang.reflect.Method.invoke(Method.java:498) 在 org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) 在 org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) 在 org.junit.runners.model.FrameworkMethod.invokeExplosively（FrameworkMethod.java:47）在 org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) 在 org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) 在 org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) 在 org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55) 在 org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55) 在 org.junit.rules.RunRules.evaluate(RunRules.java:20) 在 org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) 在 org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) 在 org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) 在 org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) 在 org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) 在 org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) 在 org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) 在 org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) 在 org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) 在 org.junit.runners.ParentRunner.run(ParentRunner.java:363) 在 org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) 在 org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) 在 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:538) 在 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:760) 在 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:460) 在 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:206)

【问题讨论】：

标签： java xml web-services soap apache-camel

【解决方案1】：

您可以尝试使用 xpath 从 xml 中提取值，例如：

 .convertBodyTo(org.w3c.dom.Document.class)
 .setProperty("needValue",xpath("*//AddResult/text()",String.class))
  //use extracted value

如果需要将输入的 xml 转换为另一个寻找 xslt 组件。

更新：如果你真的需要使用对象来删除你的异常，你需要提取映射的主体 AddResponse 因为你映射了它。您的输入字符串从未映射的肥皂元素“信封”开始。如果您在 .unmarshall() 之前有 CxfPayload，只需将其转换为 Document 或 String。要成功测试，只需删除肥皂元素。

【讨论】：

【解决方案2】：

public static Document loadXMLString(String response) throws Exception
{
    DocumentBuilderFactory dbf =DocumentBuilderFactory.newInstance();
    DocumentBuilder db = dbf.newDocumentBuilder();
    InputSource is = new InputSource(new StringReader(response));

    return db.parse(is);
}

public static List<String> getFullNameFromXml(String response, String tagName) throws Exception {
    Document xmlDoc = loadXMLString(response);
    NodeList nodeList = xmlDoc.getElementsByTagName(tagName);
    List<String> ids = new ArrayList<String>(nodeList.getLength());
    for(int i=0;i<nodeList.getLength(); i++) {
        Node x = nodeList.item(i);
        ids.add(x.getFirstChild().getNodeValue());             
        System.out.println(nodeList.item(i).getFirstChild().getNodeValue());
    }
    return ids;
}

public static void main(String arg[]) throws Exception
{

    String res="<?xml version=\"1.0\" encoding=\"utf-8\"?><soap:Envelope xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\"><soap:Body><SubtractResponse xmlns=\"http://tempuri.org/\"><SubtractResult>150</SubtractResult></SubtractResponse></soap:Body></soap:Envelope>";
    List<String> output = XmlResponseToObject.getFullNameFromXml(res, "SubtractResult");
    String[] strarray = new String[output.size()];
    output.toArray(strarray);
    String x = output.get(0);
    System.out.println(x);
}

【讨论】：