关于Webservice接口对接相关总结
Webservice接口对接
Webservice接口对接
因为近期处理了很多关于Webservice的接口对接,所以这篇文章是对近期自己的学习做一个简单的总结。
一:
对于接口对接,建议首先需要了解一下WSDL文件,以及入参的SOAP报文的阅读,各节点的含义。有时候对接的开发直接扔给你一个wsdl服务文件,或者一串soap报文让你调用,这种情况下,如果不了解如何阅读该文件包括相关节点的含义,就会很尴尬;其次,需要问清楚接口提供方,对方的接口有没有访问认证等,如果没有,可以采用自动生成客户端的形式处理,这种方式不再赘述,网上有一大堆的资料。我这里介绍一下我遇到的需要接口认证的方式,废话少说直接看代码:
- //直接AXIS调用
- public class WebserviceUtil {
- public static String getResult(ServiceInfoDto serviceInfoDto, String jsoninfo)
- throws ServiceException, MalformedURLException, RemoteException, SOAPException {
- //调用接口//标识Web Service的具体路径
- String endpoint = serviceInfoDto.getEndpoint();
- String namespace = serviceInfoDto.getNamespace();
- String soapaction = serviceInfoDto.getSoapaction();
- String username = new String("***");
- String password = new String("***");
- String HU_SENDR = new String("***");
- String HU_JSON = jsoninfo;
- String result = "";
- try {
- // 创建 Service实例
- Service service = new Service();
- QName qname = new QName(namespace, serviceInfoDto.getLocalPart());
- // 通过Service实例创建Call的实例
- Call call = (Call) service.createCall(); //为Call设置服务的位置
- call.setTargetEndpointAddress(endpoint);
- call.setOperationName(qname);
- call.setEncodingStyle("UTF-8");
- call.setSOAPActionURI(soapaction);
- call.setUsername(username);
- call.setPassword(password);
- call.addParameter(new QName("HU_JSON"),
- org.apache.axis.encoding.XMLType.XSD_STRING,
- javax.xml.rpc.ParameterMode.IN);
- call.addParameter(new QName("HU_SENDR"),
- org.apache.axis.encoding.XMLType.XSD_STRING,
- javax.xml.rpc.ParameterMode.IN);
- call.setReturnType(XMLType.XSD_STRING); // 返回值类型:String
- Object[] obj = {HU_JSON, HU_SENDR};
- result = (String) call.invoke(obj);// 远程调用
- // System.out.println("result is " + result);
- } catch (Exception e) {
- e.printStackTrace();
- }
- return result;
- }
- }
- public class ServiceInfoDto {
- private String endpoint;
- private String namespace;
- private String soapaction;
- private String localPart;
- public String getEndpoint() {
- return endpoint;
- }
- public void setEndpoint(String endpoint) {
- this.endpoint = endpoint;
- }
- public String getNamespace() {
- return namespace;
- }
- public void setNamespace(String namespace) {
- this.namespace = namespace;
- }
- public String getSoapaction() {
- return soapaction;
- }
- public void setSoapaction(String soapaction) {
- this.soapaction = soapaction;
- }
- public String getLocalPart() {
- return localPart;
- }
- public void setLocalPart(String localPart) {
- this.localPart = localPart;
- }
- }
- 解读一下入参和几个重要的参数:
- ServiceInfoDto对象:是对相关节点入参的汇总,这里的endpoint,namespace,soapaction,localPart在对方提供的wsdl文件中都可查到;
- jsoninfo:接口方要求的入参对象(转成json字符串形式入参)
- String username = new String("***"); 接口方提供的认证登录名(不需要可忽略)
- String password = new String("***"); 接口方提供的认证登录密码(不需要可忽略)
- String HU_SENDR = new String("***"); HU_SENDR需要按对方要求的字段名称处理,入参值接口方提供(不需要可忽略);
- String HU_JSON = jsoninfo;HU_JSON;需要按对方要求的字段名称处理,入参值是前面处理过的json对象;
二:
- 第二种对接是拼接SOAP报文入参,并且解析返回的SOAP报文,获取返回信息;
这种方式必须要清楚的知道对方入参的soap报文格式,相关节点一定要清晰,拿到对方的报文信息进行拼接即可:
soap报文拼接,由于我用到的地方比较多,所以提取的代码块处理
- public class SoapAppendXml {
- public static StringBuffer soapXml(String arg2,String arg4,String method,String id) {
- StringBuffer sendSoapString = new StringBuffer();
- sendSoapString.append("<soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:web=\"http://webservice.**.com/\">");
- sendSoapString.append(" <soapenv:Header/>");
- sendSoapString.append(" <soapenv:Body>");
- sendSoapString.append(" <web:"+method+">");
- sendSoapString.append(" <arg0>*</arg0>");
- sendSoapString.append(" <arg1>false</arg1>");
- sendSoapString.append(" <arg2>"+arg2+"</arg2>");
- sendSoapString.append(" <arg3>[]</arg3>");
- sendSoapString.append(" <arg4>"+arg4+"</arg4>");
- sendSoapString.append(" </web:"+method+">");
- sendSoapString.append(" </soapenv:Body>");
- sendSoapString.append("</soapenv:Envelope>");
- return sendSoapString;
- }
- }
入参可根据实际接口的需要进行修改,各节点可查看接口的soap入参要求,动态处理或者写死都行;
由于我的调用服务只有一个,并且有多个方法,所以入参method需要动态处理;
下面是接口调用:
- public class SoapUtil {
- public static String getWebServiceAndSoap(String url,String isClass,String isMethod,StringBuffer sendSoapString) throws IOException {
- String result = "";
- String soap = sendSoapString.toString();
- if (soap == null) {
- return null;
- }
- URL soapUrl = new URL(url);
- URLConnection conn = soapUrl.openConnection();
- conn.setUseCaches(false);
- conn.setDoInput(true);
- conn.setDoOutput(true);
- conn.setRequestProperty("Content-Length",
- Integer.toString(soap.length()));
- conn.setRequestProperty("Content-Type", "text/xml; charset=utf-8");
- // 调用的接口方法是
- conn.setRequestProperty(isClass,isMethod);
- OutputStream os = conn.getOutputStream();
- OutputStreamWriter osw = new OutputStreamWriter(os, "utf-8");
- osw.write(soap);
- osw.flush();
- osw.close();
- // 获取webserivce返回的流
- InputStream is = conn.getInputStream();
- if (is!=null) {
- byte[] bytes = new byte[0];
- bytes = new byte[is.available()];
- is.read(bytes);
- String str = new String(bytes);
- return str;
- }else {
- return null;
- }
- }
}
- 解读一下上面的工具类:
- url:是对接服务地址,以"?wsdl"结尾的地址;
- isClass:接口类名,在对方提供的wsdl文件中可以查到,我这里的是"LvYunkangWebservice";
- isMethod:调用方法名
- sendSoapString:拼接好的soap报文
该工具类在实际测试中,发现最终返回的报文,会出现乱码现象,查阅得知,应该是跟InputStream按字节解析有关。所以,对上述工具类进行简单的修改,也就是对返回结果部分做一下修改(标红的部分)
- public class SoapUtil {
public static String getWebServiceAndSoap(String url,String isClass,String isMethod,StringBuffer sendSoapString) throws IOException {
String result = "";
String soap = sendSoapString.toString();
if (soap == null) {
return null;
}
URL soapUrl = new URL(url);
URLConnection conn = soapUrl.openConnection();
conn.setUseCaches(false);
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setRequestProperty("Content-Length",
Integer.toString(soap.length()));
conn.setRequestProperty("Content-Type", "text/xml; charset=utf-8");
// 调用的接口方法是
conn.setRequestProperty(isClass,isMethod);
OutputStream os = conn.getOutputStream();
OutputStreamWriter osw = new OutputStreamWriter(os, "utf-8");
osw.write(soap);
osw.flush();
osw.close();
// 获取webserivce返回的流
InputStream is = conn.getInputStream();
if (is != null) {
InputStreamReader isr = new InputStreamReader(is, "UTF-8");
BufferedReader br = new BufferedReader(isr);
StringBuilder sb = new StringBuilder();
String temp = null;
while(null != (temp = br.readLine())) {
sb.append(temp);
}
result = sb.toString();
is.close();
isr.close();
br.close();
}
return result;
}
}
解析返回的报文:
这里先给大家看一下,我的拿到的报文返回示例:
- <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
- <soap:Body>
- <ns2:getResultResponse xmlns:ns2="http://webservice.taikang.com/">
- <return>
- <message>访问成功</message>
- <result>true</result>
</return>
</ns2:getResultResponse >
</soap:Body>
</soap:Envelope>
按节点分级解析的方式,返回Map即可
- public static Map<String,String> XMLtoData(String xml) throws DocumentException {
- Map map = new HashMap();
- List<Data> dataList = new ArrayList<>();
- Document doc = DocumentHelper.parseText(xml);
- //获取根元素,准备递归解析这个XML树
- Element root = doc.getRootElement();
- //获取到data的集合
- List<Element> mzList = root.element("Body").element("getResultResponse").elements("return");
- //遍历data集合
- for (Element e : mzList) {
- List<Element> elements = e.elements();
- //遍历将元素中的key和value存到map中
- for (Element item : elements) {
- if (!StringUtils.isEmpty(item.getText())) {
- map.put(item.getName(), item.getText());
- }
- }
- }
- return map;
- }
注意:
- List<Element> mzList = root.element("Body").element("getResultResponse").elements("return");
节点可以按需求获取,即:root.element("**").element("**")................elements("**")
- 上述是两种工具类调用Webservice接口的方式,请多指教!