调用WebService接口返回字符串

 Service service = new Service();
             Call call = (Call) service.createCall();
             call.setTargetEndpointAddress(this.endPoint);
             call.setOperationName(new QName(this.defaultNameSpace,this.interfaceMethodName));
             call.setSOAPActionURI(this.defaultNameSpace + "/"+ this.interfaceMethodName);

             if (this.methodParameter.contains(",")) {
                 String[] paramter = this.methodParameter.split(",");
                 for (int i = 0; i < paramter.length; i++) {
                     // 接口的参数
                     call.addParameter(new QName(this.defaultNameSpace,paramter[i]), Constants.XSD_STRING,javax.xml.rpc.ParameterMode.IN);
                 }
             } else {
                 // 接口的参数
                 call.addParameter(new QName(this.defaultNameSpace,this.methodParameter), Constants.XSD_STRING,javax.xml.rpc.ParameterMode.IN);
             }
             // 设置返回类型
             call.setReturnType(Constants.XSD_STRING);

             Object[] strs = new Object[] { strDate, hour };
             String returnVal = (String) call.invoke(strs);
             // 给方法传递参数，并且调用方法
             System.out.println("returnVal is " + returnVal);