JAVA調用返回XML格式數據的WebService，並經過XPath解析XML的應用

時間 2021-01-02

標籤 java node web spring 瀏覽器 dom eclipse ide this 欄目 Java 简体版

原文原文鏈接

1、獲取WSDL定義和endpoit地址java

WSDL定義地址由開發者提供，爲http://10.10.xx.xxx/webservice/Pangus.SCC.OracleEBS.WebService.dll/wsdl/IWebServicenode

經過瀏覽器訪問WSDL地址，能夠看到endpoint地址的說明：web

<service name="IWebServiceservice">spring

<port name="IWebServicePort" binding="tns:IWebServicebinding">瀏覽器

<soap:address location="http://10.10.xx.xxx/webservice/Pangus.SCC.OracleEBS.WebService.dll/soap/IWebService"/>dom

</port>eclipse

</service>ide

2、eclipse生成Java WebService Client代理ui

Eclipse->New->Other->Web Service Client->輸入wsdl地址->Finish。this

生成的類代碼爲（不包含IReelIdService.java和ReelIdServiceImpl.java類）：

3、調用WebService提供的方法

本例調用的是getIMSData方法，經過代理類IWebServicProxy.java調用，返回的數據爲XML，須要解析

/**
* 調用盤古WMS系統的WebService獲取REELID信息
* 返回格式是字符串，須要本身解析
* @param reelId
* @return String
*/
private String getReelIdInfoFromPangusWebService(String reelId) {

if (null == reelId || reelId.equals("")) {
return "";
}
IWebServiceProxy wsProxy = new IWebServiceProxy();
wsProxy.setEndpoint("http://10.10.xx.xxx/webservice/Pangus.SCC.OracleEBS.WebService.dll/soap/IWebService");
StringHolder resultDTOXml = new StringHolder();
StringHolder resultMsg = new StringHolder();
try {
Boolean success = wsProxy.getIMSData("REELID", reelId, resultDTOXml, resultMsg);
if (!success) {
throw new MESException("ERR-0002");
}
} catch (RemoteException e) {
e.printStackTrace();
throw new MESException("ERR-0002");
}
return resultDTOXml.value;
}

4、解析XML

經過XPath解析返回的XML數據，幷包裝成VO。XPath有點相似於JQuery，它對XML解析，而JQuery是對DOM進行解析，XPath的具體知識可參考：http://w3school.com.cn/xpath/

/**
* 解析盤古WMS WebService返回的REELID字符串
* 格式：<DataSet><row><REELID>T905555273842-130706-0008</REELID><DATECODE/><QTY>5000.000</QTY><MTRL_ID>307674</MTRL_ID><STATUS>0</STATUS><CUST_REELID/></row></DataSet>
* @param reelIdInfo REELID字符串
* @return ReelIdVO
*/
private ReelIdVO parseXmlToVO(String reelIdInfo) {
System.out.println(reelIdInfo);
LOG.debug("reelIdInfo = " + reelIdInfo);
try {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = dbf.newDocumentBuilder();
// 增長XML定義
//String data = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" + reelIdInfo;
StringReader sr = new StringReader(reelIdInfo);
InputSource is = new InputSource(sr);
Document doc = builder.parse(is);
//Document doc = builder.parse(new File("C:/test.xml"));
// 經過XPath查找XML節點數據
XPathFactory factory = XPathFactory.newInstance();
XPath xPath = factory.newXPath();
// 根下的DataSet下的第一個row下的REELID元素文本
XPathExpression expr = xPath.compile("/DataSet/row[1]//*");
NodeList nodes = (NodeList) expr.evaluate(doc, XPathConstants.NODESET);
if (null == nodes) {
return null;
}
ReelIdVO reelIdVO = new ReelIdVO();
// 庫存組織
reelIdVO.setOrganizationId(Long.valueOf(getNodeValueByNodeName(nodes, "organizationId")));
// REELID
reelIdVO.setReelId(getNodeValueByNodeName(nodes, "REELID"));
// 剩餘數量
reelIdVO.setRemainQty(Double.valueOf(getNodeValueByNodeName(nodes, "QTY")));
// 原始數量
reelIdVO.setQty(Double.valueOf(reelIdVO.getRemainQty()) + Double.valueOf(getNodeValueByNodeName(nodes, "usedQTY")));
reelIdVO.setStatus(getNodeValueByNodeName(nodes, "STATUS"));
reelIdVO.setManufactory(getNodeValueByNodeName(nodes, "manufactory"));
reelIdVO.setDateCode(getNodeValueByNodeName(nodes, "DATECODE"));
reelIdVO.setLotCode(getNodeValueByNodeName(nodes, "LOTCODE"));
reelIdVO.setInventoryItemId(Long.valueOf(getNodeValueByNodeName(nodes, "MTRL_ID")));
reelIdVO.setCustReelId(getNodeValueByNodeName(nodes, "CUST_REELID"));
return reelIdVO;

} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (XPathExpressionException e) {
e.printStackTrace();
}
return null;
}

代碼以下：

package cn.com.scc.wms.biz.reelid;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;
import java.rmi.RemoteException;
import java.util.List;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.rpc.holders.StringHolder;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

import cn.com.scc.common.sys.MESException;
import cn.com.scc.wms.vo.ReelIdVO;

/**
 * REELID業務方法
 * @author XUHL
 * @deprecated  從盤古WebService獲取數據
 *
 */
//@Service(value = "reelIdServiceImpl")
public class ReelIdServiceImpl implements IReelIdService {

    private final Logger LOG = LoggerFactory.getLogger(getClass());
    
    @Override
    public ReelIdVO getByReelId(String reelId) {

        String reelIdString = this.getReelIdInfoFromPangusWebService(reelId);
        return this.parseXmlToVO(reelIdString);
    }

    @Override
    public List<ReelIdVO> getAllByInventoryItemNumber(String inventoryItemNumber) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public List<ReelIdVO> getAllByCustReelId(String custReelId) {
        // TODO Auto-generated method stub
        return null;
    }    
    
    /**
     * 調用盤古WMS系統的WebService獲取REELID信息
     * 返回格式是字符串，須要本身解析 
     * @param reelId
     * @return String
     */
    private String getReelIdInfoFromPangusWebService(String reelId) {
        
        if (null == reelId || reelId.equals("")) {
            return "";
        }
        IWebServiceProxy wsProxy = new IWebServiceProxy();
        wsProxy.setEndpoint("http://10.10.1.109/webservice/Pangus.SCC.OracleEBS.WebService.dll/soap/IWebService");
        StringHolder resultDTOXml = new StringHolder();
        StringHolder resultMsg = new StringHolder();
        try {
            Boolean success = wsProxy.getIMSData("REELID", reelId, resultDTOXml, resultMsg);
            if (!success) {
                throw new MESException("ERR-0002");
            }
        } catch (RemoteException e) {
            e.printStackTrace();
            throw new MESException("ERR-0002");
        }
        return resultDTOXml.value;
    }
    
    /**
     * 解析盤古WMS WebService返回的REELID字符串
     * 格式：<DataSet><row><REELID>T905555273842-130706-0008</REELID><DATECODE/><QTY>5000.000</QTY><MTRL_ID>307674</MTRL_ID><STATUS>0</STATUS><CUST_REELID/></row></DataSet>
     * @param reelIdInfo REELID字符串
     * @return ReelIdVO
     */
    private ReelIdVO parseXmlToVO(String reelIdInfo) {
        System.out.println(reelIdInfo);
        LOG.debug("reelIdInfo = " + reelIdInfo);
        try {
            DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
            DocumentBuilder builder = dbf.newDocumentBuilder();
            // 增長XML定義
            //String data = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" + reelIdInfo;
            StringReader sr = new StringReader(reelIdInfo);
            InputSource is = new InputSource(sr);
            Document doc = builder.parse(is);
            //Document doc = builder.parse(new File("C:/test.xml"));
            // 經過XPath查找XML節點數據
            XPathFactory factory = XPathFactory.newInstance();
            XPath xPath = factory.newXPath();
            // 根下的DataSet下的第一個row下的REELID元素文本
            XPathExpression expr = xPath.compile("/DataSet/row[1]//*");
            NodeList nodes = (NodeList) expr.evaluate(doc, XPathConstants.NODESET);
            if (null == nodes) {
                return null;
            }            
            ReelIdVO reelIdVO = new ReelIdVO();
            // 庫存組織
            reelIdVO.setOrganizationId(Long.valueOf(getNodeValueByNodeName(nodes, "organizationId")));
            // REELID
            reelIdVO.setReelId(getNodeValueByNodeName(nodes, "REELID"));
            // 剩餘數量
            reelIdVO.setRemainQty(Double.valueOf(getNodeValueByNodeName(nodes, "QTY")));
            // 原始數量
            reelIdVO.setQty(Double.valueOf(reelIdVO.getRemainQty()) + Double.valueOf(getNodeValueByNodeName(nodes, "usedQTY")));            
            reelIdVO.setStatus(getNodeValueByNodeName(nodes, "STATUS"));
            reelIdVO.setManufactory(getNodeValueByNodeName(nodes, "manufactory"));
            reelIdVO.setDateCode(getNodeValueByNodeName(nodes, "DATECODE"));
            reelIdVO.setLotCode(getNodeValueByNodeName(nodes, "LOTCODE"));
            reelIdVO.setInventoryItemId(Long.valueOf(getNodeValueByNodeName(nodes, "MTRL_ID")));
            reelIdVO.setCustReelId(getNodeValueByNodeName(nodes, "CUST_REELID"));
            return reelIdVO;
            
        } catch (ParserConfigurationException e) {
            e.printStackTrace();
        } catch (SAXException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (XPathExpressionException e) {
            e.printStackTrace();
        }
        return null;
    }
    
    private String getNodeValueByNodeName(NodeList nodes, String nodeName) {
        
        for (int i = 0; i < nodes.getLength(); i++) {
            if (nodes.item(i).getNodeName().equals(nodeName)) {
                return nodes.item(i).getTextContent();
            }
        }
        return "";
    }


}