JAVA的WebService创建和使用

搭建环境

开发工具：IntelliJ IDEA 2019.2.4 x64

JDK:1.8.0_202

Tomcat：apache-tomcat-8.5.69

webservice服务端

一、文件-NEW-新建项目

 二、

 要生成wsdl文件（有的版本可以直接java文件右键），我的在tool里

 

webservice客户端

使用http方式进行调用

使用Maven的pom.xml增加以下依赖

        <!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpcore -->
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpcore</artifactId>
            <version>4.4.10</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient -->
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.5.6</version>
        </dependency>

 

    public void GetHttpWebService(String url, String strParams)
    {
        String InterfaceName="UserTransmit";
        String userName = null;
        String userPass=null;
        try {
            userName = AESHelper.encryptAES("admin");
            userPass = AESHelper.encryptAES("pass");
        } catch (Exception e) {
            e.printStackTrace();
        }
        String  name="aaa";

        //soap 参数
        String soapXml ="";
        soapXml += "<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:otms=\"http://otms.efh.com.cn\">";
        soapXml += " <soap:Header>";
        soapXml += " <SoapHeader xmlns=\"http://otms.efh.com.cn/\">";
        soapXml+= " <name>" + userName + "</name>";
        soapXml+= " <password>" + userPass + "</password>";
        soapXml+= " </SoapHeader>";
        soapXml+= " </soap:Header>";
        soapXml+= " <soap:Body>";
        soapXml+= " <otms:" + InterfaceName + ">"; // 接口名称;
        if (strParams != null && strParams.length() > 0)
        {
            soapXml += " <wno>" + strParams + "</wno>"; // 参数加数据
        }
        soapXml += " </otms:" + InterfaceName + ">"; // 接口名称;
        soapXml += "</soap:Body>";
        soapXml += "</soap:Envelope>";


        //获取http构建器对象
        HttpClientBuilder builder = HttpClientBuilder.create();
        CloseableHttpClient httpClient = builder.build();

        //封装httppost请求对象
        HttpPost httpPost = new HttpPost(url);
        httpPost.setConfig(RequestConfig.custom().setSocketTimeout(30000).setConnectTimeout(30000).build());
        try {
            httpPost.setHeader("Content-Type", "text/xml;charset=UTF-8");
            httpPost.setHeader("SOAPAction", "");
            StringEntity data = new StringEntity(soapXml,
                    Charset.forName("UTF-8"));
            httpPost.setEntity(data);  //设置post请求参数实体

            //执行http请求
            CloseableHttpResponse response = httpClient
                    .execute(httpPost);
            HttpEntity httpEntity = response.getEntity();
            if (httpEntity != null) {
                // 打印响应内容
                String retStr = EntityUtils.toString(httpEntity, "UTF-8");
                System.out.println(retStr);
            }
            // 释放资源
            httpClient.close();
        } catch (Exception e) {
//            logger.error("exception in doPostSoap1_1", e);
        }
    }

调用：

String url="http://localhost:8889/PubWebService?wsdl";
GetHttpWebService(url,"helloChenze");

其他

 

public static void GetHttpWebService(String url, String InterfaceName,String strParams)
    {
        String userName = null;
        String userPass=null;
        try {
            userName = AESHelper.encryptAES("admin");
            userPass = AESHelper.encryptAES("pass");
        } catch (Exception e) {
            e.printStackTrace();
        }
        String  name="aaa";

        //soap 参数
        String soapXml ="";
        soapXml += "<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:otms=\"http://otms.efh.com.cn\">";
        soapXml += " <soap:Header>";
        soapXml += " <SoapHeader xmlns=\"http://otms.efh.com.cn/\">";
        soapXml+= " <name>" + userName + "</name>";
        soapXml+= " <password>" + userPass + "</password>";
        soapXml+= " </SoapHeader>";
        soapXml+= " </soap:Header>";
        soapXml+= " <soap:Body>";
        soapXml+= " <otms:" + InterfaceName + ">"; // 接口名称;
        if (strParams != null && strParams.length() > 0)
        {
            soapXml += " <wno>" + strParams + "</wno>"; // 参数加数据
        }
        soapXml += " </otms:" + InterfaceName + ">"; // 接口名称;
        soapXml += "</soap:Body>";
        soapXml += "</soap:Envelope>";


        //获取http构建器对象
        HttpClientBuilder builder = HttpClientBuilder.create();
        CloseableHttpClient httpClient = builder.build();

        //封装httppost请求对象
        HttpPost httpPost = new HttpPost(url);
        httpPost.setConfig(RequestConfig.custom().setSocketTimeout(30000).setConnectTimeout(30000).build());
        try {
            httpPost.setHeader("Content-Type", "text/xml;charset=UTF-8");
            httpPost.setHeader("SOAPAction", "");
            StringEntity data = new StringEntity(soapXml,
                    Charset.forName("UTF-8"));
            httpPost.setEntity(data);  //设置post请求参数实体

            //执行http请求
            CloseableHttpResponse response = httpClient
                    .execute(httpPost);
            HttpEntity httpEntity = response.getEntity();
            if (httpEntity != null) {
                // 打印响应内容
                String retStr = EntityUtils.toString(httpEntity, "UTF-8");
                System.out.println(retStr);
            }
            // 释放资源
            httpClient.close();
        } catch (Exception e) {
//            logger.error("exception in doPostSoap1_1", e);
        }
    }




        GetHttpWebService("http://localhost:8888/PubWebService?wsdl","GetFactoryInfo","{\"componentType\":\"ws\"}");

 

其他借鉴 ：https://www.cnblogs.com/furenjian/p/16145823.html

 

public String getOnline(String url){
        int errCode=0;
        JSONObject resultJson=new JSONObject();
        String result="";
        Service service = new Service();
        Call call;
        try {
            call=(Call) service.createCall();
            QName opAddEntry = new QName("urn:demo", "GetOnlineInfo"); //设置命名空间和需要调用的方法名
            call.setTargetEndpointAddress(url); //设置请求路径
            call.setOperationName("GetNcgOnlineInfo"); //调用的方法名
            call.setTimeout(Integer.valueOf(2000));     //设置请求超时            
            call.setReturnType(org.apache.axis.encoding.XMLType.XSD_STRING);//设置返回类型 
            result= (String) call.invoke(opAddEntry,new Object[]{});
             
        } catch (ServiceException e) {
            // TODO Auto-generated catch block
            System.out.println("查询在线状态1:"+e.getMessage());
            errCode=1;
        } catch (RemoteException e) {
            // TODO Auto-generated catch block
                        System.out.println("查询在线状态2:"+e.getMessage());
            errCode=2;
        }
        resultJson.put("errCode", errCode);
        resultJson.put("data", result);
  
        return resultJson.toString();
    }

里面注释比较全。还有些别的设置也比较简单，自己琢磨就知道了。例如编码方式、解析时间等。

说说这种方式的问题吧。我在使用的时候遇到的是：和我对接的人编写了两个WebService。但是由于这两个中有许多部分是相同的，他就把这两个合并了，同时提供了两个命名空间（具体怎么操作的我也不清楚），那么问题了，这其中有一个命名空间的所有方法我都能成功调用，但是都无法收到返回值。当时我就方了，开始还是好好的，怎么就突然不行了，于是我继续执行，查看报错消息，同时抓包查看报文内容。终于给我发现了问题。

下图是返回结果报的错，大体意识就是说我设置的命名空间和对方的命名空间不匹配。然后RPC解析就失败了。

 然后我利用Wireshark抓包，得到一下结果。可以看看出，我请求的是命名空间是 ns1="urn:ncg"(其余的都是wsdl默认自带的)。可是我收到的返回报文就变了。变成了这样的  xmlns:dag="http://tempuri.org/dag.xsd" xmlns:dag="urn:dag" xmlns:ncg="urn:ncg"  足足有三个啊。RPC按照默认设置的 ns1="urn:ncg" 去解析，那肯定什么都解析不了的。所以只有自己去解析了。这种情况可以利用第三种或者第四种方式进行调用。