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("");
sendSoapString.append(" ");
sendSoapString.append(" ");
sendSoapString.append(" ");
sendSoapString.append(" * ");
sendSoapString.append(" false ");
sendSoapString.append(" "+arg2+" ");
sendSoapString.append(" [] ");
sendSoapString.append(" "+arg4+" ");
sendSoapString.append(" ");
sendSoapString.append(" ");
sendSoapString.append(" ");
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:
访问成功
true
按节点分级解析的方式,返回Map即可
public static Map XMLtoData(String xml) throws DocumentException {
Map map = new HashMap();
List 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 mzList = root.element("Body").element("getResultResponse").elements("return");
//遍历data集合
for (Element e : mzList) {
List 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 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!