xfire客户端获取xcf服务端接口解析问题

太过爱你忘了你带给我的痛 2021-09-23 07:48 319阅读 0赞

### 1、java.lang.ClassCastException: org.apache.xerces.dom.DocumentImpl cannot be cast to java.lang.String ###

cfx服务端代码参考[https://blog.csdn.net/zwahut/article/details/100923439][https_blog.csdn.net_zwahut_article_details_100923439]

xfire客户端代码如下：

import org.codehaus.xfire.client.Client;
    import java.net.URL;
    import java.net.URLDecoder;
    
    public class Test {
        private static String WSDL = "";
    
        static{
            WSDL = "http://localhost:8080/userWebService?wsdl";
        }
    
        public static void main(String[] args){
            getAllUsers();
    
        }
    
    
        public static void getAllUsers() {
            String result = "";
    
            try {
                Client client = new Client(new URL(WSDL));
    
                Object[] results = client.invoke("getUserByName", new Object[]{"李四"});
    
                result = URLDecoder.decode((String)results[0],"utf-8");
    
                System.out.println(result);
    
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    
    }

运行报错，错误信息：

java.lang.ClassCastException: org.apache.xerces.dom.DocumentImpl cannot be cast to java.lang.String
    	at com.chinaoly.Test.getAllUsers(Test.java:35)
    	at com.chinaoly.Test.main(Test.java:22)

错误原因是返回结果需要转换成Document对象，修改代码如下：

import org.codehaus.xfire.client.Client;
    import org.w3c.dom.Document;
    
    import javax.xml.transform.OutputKeys;
    import javax.xml.transform.Transformer;
    import javax.xml.transform.TransformerFactory;
    import javax.xml.transform.dom.DOMSource;
    import javax.xml.transform.stream.StreamResult;
    import java.io.StringWriter;
    import java.net.URL;
    import java.net.URLDecoder;
    
    public class Test {
        private static String WSDL = "";
    
        static{
            WSDL = "http://localhost:8080/userWebService?wsdl";
        }
    
        public static void main(String[] args){
            getAllUsers();
    
        }
    
    
        public static void getAllUsers() {
            String result = "";
    
            try {
                Client client = new Client(new URL(WSDL));
    
                Object[] results = client.invoke("getUserByName", new Object[]{"李四"});
    
                Document d = (Document)results[0];
    
                System.out.println(toFormatedXML(d));
    
                System.out.println(result);
    
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    
        public static String toFormatedXML(Document doc) throws Exception {
            TransformerFactory transFactory = TransformerFactory.newInstance();
            Transformer transFormer = transFactory.newTransformer();
            transFormer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
            DOMSource domSource = new DOMSource(doc);
    
            StringWriter sw = new StringWriter();
            StreamResult xmlResult = new StreamResult(sw);
    
            transFormer.transform(domSource, xmlResult);
    
            return sw.toString();
    
        }
    }

运行结果：

<?xml version="1.0" encoding="UTF-8" standalone="no"?><return><id>001</id><name>李四</name></return>

[https_blog.csdn.net_zwahut_article_details_100923439]: https://blog.csdn.net/zwahut/article/details/100923439