WebService学习(七)——通过URLConnection调用webService接口，解析wsdl

这篇文章主要利用URLconnection调用webService接口，并利用dom4解析返回的数据

1.wsdl数据（访问http://localhost:8081/ERPDEMO/service/users?wsdl）

<wsdl:definitions xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:tns="http://impl.service.demo.com/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:ns2="http://schemas.xmlsoap.org/soap/http" xmlns:ns1="http://service.demo.com/" name="UserServiceImplService" targetNamespace="http://impl.service.demo.com/">
<wsdl:import location="http://localhost:8081/ERPDEMO/service/users?wsdl=UserService.wsdl" namespace="http://service.demo.com/"></wsdl:import>
<wsdl:binding name="UserServiceImplServiceSoapBinding" type="ns1:UserService">
<soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
<wsdl:operation name="getPermissions">
<soap:operation soapAction="" style="document"/>
<wsdl:input name="getPermissions">
<soap:body use="literal"/>
</wsdl:input>
<wsdl:output name="getPermissionsResponse">
<soap:body use="literal"/>
</wsdl:output>
</wsdl:operation>
<wsdl:operation name="selectByUserName">
<soap:operation soapAction="" style="document"/>
<wsdl:input name="selectByUserName">
<soap:body use="literal"/>
</wsdl:input>
<wsdl:output name="selectByUserNameResponse">
<soap:body use="literal"/>
</wsdl:output>
</wsdl:operation>
<wsdl:operation name="login">
<soap:operation soapAction="" style="document"/>
<wsdl:input name="login">
<soap:body use="literal"/>
</wsdl:input>
<wsdl:output name="loginResponse">
<soap:body use="literal"/>
</wsdl:output>
</wsdl:operation>
<wsdl:operation name="insert">
<soap:operation soapAction="" style="document"/>
<wsdl:input name="insert">
<soap:body use="literal"/>
</wsdl:input>
<wsdl:output name="insertResponse">
<soap:body use="literal"/>
</wsdl:output>
</wsdl:operation>
<wsdl:operation name="getRoles">
<soap:operation soapAction="" style="document"/>
<wsdl:input name="getRoles">
<soap:body use="literal"/>
</wsdl:input>
<wsdl:output name="getRolesResponse">
<soap:body use="literal"/>
</wsdl:output>
</wsdl:operation>
<wsdl:operation name="getUserById">
<soap:operation soapAction="" style="document"/>
<wsdl:input name="getUserById">
<soap:body use="literal"/>
</wsdl:input>
<wsdl:output name="getUserByIdResponse">
<soap:body use="literal"/>
</wsdl:output>
</wsdl:operation>
</wsdl:binding>
<wsdl:service name="UserServiceImplService">
<wsdl:port binding="tns:UserServiceImplServiceSoapBinding" name="UserServiceImplPort">
<soap:address location="http://localhost:8081/ERPDEMO/service/users"/>
</wsdl:port>
</wsdl:service>
</wsdl:definitions>

2.利用soapui获得你所有方法的soap格式数据

3.开始写方法，我将调用方法和dom4j解析方法写在一起，后期再分开吧

	public static void main(String[] args) throws Exception {
		// WebService服务的地址
		URL url = new URL("http://localhost:8081/ERPDEMO/service/users?wsdl");
		HttpURLConnection conn = (HttpURLConnection) url.openConnection();
		// 是否具有输入参数
		conn.setDoInput(true);
		// 是否输出输入参数
		conn.setDoOutput(true);
		// 发POST请求
		conn.setRequestMethod("POST");
		// 设置请求头（注意一定是xml格式）
		conn.setRequestProperty("content-type", "text/xml;charset=utf-8");
		String username = "csdn1";
		// 构造请求体，符合SOAP规范（最重要的）
		String requestBody = "<soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:ser=\"http://service.demo.com/\" "
				+ "xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\">"
				+ " <soapenv:Header/>"
				+ " <soapenv:Body>"
 
				+ "<ser:selectByUserName>"
				+ "<userName>"
				+ username
				+ "</userName>"
				+ "</ser:selectByUserName>"
 
				+ " </soapenv:Header/>"
				+ "</soapenv:Body>"
				+ "</soapenv:Envelope>";
 
		// 获得一个输出流
		OutputStream out = conn.getOutputStream();
		out.write(requestBody.getBytes());
 
		// 获得服务端响应状态码
		int code = conn.getResponseCode();
		StringBuffer sb = new StringBuffer();
		if (code == 200) {
			// 获得一个输入流，读取服务端响应的数据
			InputStream is = conn.getInputStream();
			byte[] b = new byte[1024];
			int len = 0;
 
			while ((len = is.read(b)) != -1) {
				String s = new String(b, 0, len, "utf-8");
				sb.append(s);
			}
			is.close();
		}
 
		out.close();
		System.out.println("服务端响应数据为：" + sb.toString());
 
		// 初始化报文，调用parse方法，获得结果map，然后按照需求取得字段，或者转化为其他格式
		Map map = new test01().parse(sb.toString());
		// 获得字段的值;
		String email = map.get("email").toString();
		String id = map.get("id").toString();
		String password = map.get("password").toString();
		String roleid = map.get("roleid").toString();
		String username1 = map.get("username").toString();
		System.out.println("email==" + email);
		System.out.println("id==" + id);
		System.out.println("password==" + password);
		System.out.println("roleid==" + roleid);
		System.out.println("username1==" + username1);
 
	}

dom4j解析方法

public Map<String, Object> map = new HashMap<String, Object>();
 
	/**
	 * 解析soap
	 * 
	 * @param soap
	 * @return
	 * @throws DocumentException
	 */
	public Map parse(String soap) throws DocumentException {
		Document doc = DocumentHelper.parseText(soap);// 报文转成doc对象
		Element root = doc.getRootElement();// 获取根元素，准备递归解析这个XML树
		getCode(root);
		return map;
	}
 
	/**
	 * 遍历
	 * 
	 * @param root
	 */
	public void getCode(Element root) {
		if (root.elements() != null) {
			List<Element> list = root.elements();// 如果当前跟节点有子节点，找到子节点
			for (Element e : list) {// 遍历每个节点
				if (e.elements().size() > 0) {
					getCode(e);// 当前节点不为空的话，递归遍历子节点；
				}
				if (e.elements().size() == 0) {
					map.put(e.getName(), e.getTextTrim());
				}// 如果为叶子节点，那么直接把名字和值放入map
			}
		}
 
	}

下面是返回的数据

1.soap返回的数据格式

服务端响应数据为：<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body>
<ns1:selectByUserNameResponse xmlns:ns1="http://service.demo.com/"><return>
<email>111qq.com</email>
<id>1</id>
<password>123</password><roleid>1</roleid><username>csdn1</username>
</return>
</ns1:selectByUserNameResponse></soap:Body>
</soap:Envelope>

2.dom4j解析后的结果

email==111qq.com
id==1
password==123
roleid==1
username1==csdn1