为什么不工作这个简单的SOAP客户端（org.apache.http）？(Why is this s

2019-08-01 08:36发布

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我想送一个XML文件作为SOAP服务器的请求。 下面是代码我有：（从改性发送HTTP POST请求使用SOAP动作org.apache.http ） 

import org.apache.http.client.*;
import org.apache.http.client.methods.*;
import org.apache.http.impl.client.*;
import org.apache.http.entity.StringEntity;
import org.apache.http.protocol.HTTP;
import org.apache.http.HttpResponse;
import java.net.URI;

public static void req()   {
        try {
            HttpClient httpclient = new DefaultHttpClient();
            String body="xml here";
            String bodyLength=new Integer(body.length()).toString();

            URI uri=new URI("http://1.1.1.1:100/Service");
            HttpPost httpPost = new HttpPost(uri);
            httpPost.setHeader( "SOAPAction", "MonitoringService" );
            httpPost.setHeader("Content-Type", "text/xml;charset=UTF-8");


            StringEntity entity = new StringEntity(body, "text/xml",HTTP.DEFAULT_CONTENT_CHARSET);
            httpPost.setEntity(entity);

            RequestWrapper requestWrapper=new RequestWrapper(httpPost);
            requestWrapper.setMethod("POST");


            requestWrapper.setHeader("Content-Length",bodyLength);
            HttpResponse response = httpclient.execute(requestWrapper);
            System.out.println(response);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

在此之前，我从服务器获取错误“HTTP 500”（内部服务器错误），但我现在没有得到任何答复的。 我知道服务器运行正常。因为与其他客户端是没有问题的。

谢谢。

Answer 1:

org.apache.http API不是SOAP / Web服务感知，所以你在做一个非标准的方式棘手的工作。 该代码是不是很Java友好的或柔性的，因为它不能自动“绑定”（转换）java对象数据到SOAP请求和流出SOAP响应的。 这是一个有点冗长，棘手的调试和获得工作，而脆 - 你处理的全SOAP协议，包括故障处理等？

我可以建议使用JAX-WS标准，这是内置到JVM：

1.保存WSDL文件到本地磁盘
例如<app path>/META-INF/wsdl/abc.com/calculator/Calculator.wsdl
如果您没有WSDL，你可以输入到浏览器和结果页面保存到磁盘：
http://abc.com/calculator/Calculator?wsdl

2.使用的wsimport命令转换WSDL到Java类文件
对于JDK，工具处于<jdkdir>\bin\wsimport.exe (or .sh)
为应用服务器，将会像<app_server_root>\bin\wsimport.exe (or .sh)

<filepath>\wsimport -keep -verbose <wsdlpath>\Calculator.wsdl

或者如果你的WSDL通过预先存在的web服务可用

<filepath>\wsimport -keep -verbose http://abc.com/calculator/Calculator?wsdl

（也可以包括“-p com.abc.calculator”来设置生成的类的封装）

像下面的生成文件 - 包括在你的Java项目中的这些源文件： 

com\abc\calculator\ObjectFactory.java       
com\abc\calculator\package-info.java       
com\abc\calculator\Calculator.java       ............................name = `<wsdl:portType>` name attribute      
com\abc\calculator\CalculatorService.java     ................name = `<wsdl:service>` name attribute    
com\abc\calculator\CalculatorRequestType.java  .......name = schema type used in input message    
com\abc\calculator\CalculatorResultType.java ..........name = schema type used in output message

2.创建一个JAX-WS SOAP Web服务客户端 

package com.abc.calculator.client;

import javax.xml.ws.WebServiceRef;
import com.abc.calculator.CalculatorService;
import com.abc.calculator.Calculator;

public class CalculatorClient {

    @WebServiceRef(wsdlLocation="META-INF/wsdl/abc.com/calculator/Calculator.wsdl")
    // or @WebServiceRef(wsdlLocation="http://abc.com/calculator/Calculator?wsdl")
    public static CalculatorService calculatorService;

    public CalculatorResponseType testCalculation() {
        try {
            CalculatorRequestType request = new CalculatorRequest();
            request.setSomeParameter("abc");
            request.setOtherParameter(3);
            Calculator calculator = calculatorService.getCalculatorPort();
            // automatically generate SOAP XML message, send via HTTP, 
            // receive & marshal response to java object 
            String response = calculator.doCalculation(response);
        } catch(Exception e) {
            e.printStackTrace();
        }
    }
}


Answer 2:

尝试发送这样的请求。 这是我做的最后一次： 

try
        {
            StringBuffer strBuffer = new StringBuffer();
            HttpURLConnection connection = connectToEndPoint(endpoint);
            OutputStream outputStream = generateXMLOutput(connection, yourvalue, strDate);

            InputStream inputStream = connection.getInputStream();

            int i;
            while ((i = inputStream.read()) != -1) {
                Writer writer = new StringWriter();
                writer.write(i);
                strBuffer.append(writer.toString());

            String status = xmlOutputParse(strBuffer);

而且使用的功能： 

private static HttpURLConnection connectToEndPoint(String wsEndPoint) throws MalformedURLException, IOException {
    URL urlEndPoint = new URL(wsEndPoint);
    URLConnection urlEndPointConnection = urlEndPoint.openConnection();
    HttpURLConnection httpUrlconnection = (HttpURLConnection) urlEndPointConnection;
    httpUrlconnection.setDoOutput(true);
    httpUrlconnection.setDoInput(true);
    httpUrlconnection.setRequestMethod("POST");
    httpUrlconnection.setRequestProperty("content-type", "application/soap+xml;charset=UTF-8");
    // set connection time out to 2 seconds
    System.setProperty("sun.net.client.defaultConnectTimeout", String.valueOf(2 * 1000));
    // httpUrlconnection.setConnectTimeout(2*1000);
    // set input stream read timeout to 2 seconds
    System.setProperty("sun.net.client.defaultReadTimeout", String.valueOf(2 * 1000));
    // httpUrlconnection.setReadTimeout(2*1000);
    return httpUrlconnection;
}

当您手动创建XML（修改您的需要）： 

private static OutputStream generateXMLOutput(HttpURLConnection conn, String msisdn, String strDate) throws IOException {
    OutputStream outputStream = conn.getOutputStream();

    StringBuffer buf = new StringBuffer();

    buf.append("<soap:Envelope xmlns:soap=\"http://www.w3.org/2003/05/soap-envelope\" xmlns:ins=\"http://yournamespace">\r\n");
    buf.append("<soap:Header xmlns:wsa=\"http://www.w3.org/2005/08/addressing\">\r\n");

    //..... append all your lines .......       

    OutputStreamWriter outputStreamWriter = new OutputStreamWriter(outputStream, "UTF-8");

    outputStreamWriter.write("<soap:Envelope xmlns:soap=\"http://www.w3.org/2003/05/soap-envelope\" xmlns:ins=\"http://yournamespace\">\r\n");
    outputStreamWriter.write("<soap:Header xmlns:wsa=\"http://www.w3.org/2005/08/addressing\">\r\n");
    //..... write all your lines .......    

    outputStreamWriter.flush();

    outputStream.close();
    return outputStream;
}

和回放功能的WS回答： 

private static String xmlOutputParse(StringBuffer xmlInputParam) throws IOException, ParserConfigurationException, SAXException {
    String status = null;
    DocumentBuilderFactory docBuilderfFactory = DocumentBuilderFactory.newInstance();
    DocumentBuilder documentBuilder = docBuilderfFactory.newDocumentBuilder();
    InputSource inputSource = new InputSource();
    inputSource.setCharacterStream(new StringReader(xmlInputParam.toString()));
    Document document = documentBuilder.parse(inputSource);
    NodeList nodeList = document.getElementsByTagName("ResponseHeader");
    Element element = (Element) nodeList.item(0);
    if (element == null) {
        return null;
    }
    NodeList name = element.getElementsByTagName("Status");
    Element line = (Element) name.item(0);
    if (line == null) {
        return null;
    }
    if (line.getFirstChild() instanceof CharacterData) {
        CharacterData cd = (CharacterData) line.getFirstChild();
        status = cd.getData().trim();
    }
    return status;
}

我认为，这个解决方案（即使是长）适用于大多数情况下。 我希望你能使其适应您的需求。

最好的祝福 ！



文章来源: Why is this simple SOAP client not working (org.apache.http)?
标签： java http post soap apache-commons-httpclient
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