Go调用webservice

Go调用webservice

最近写项目，切换在java,go,python之间……不过也好，同时对三种语言进行了对比，给我的感觉就是基础原理最重要，只要明白了原理，编程语言只不过是工具罢了。从速度和编码量来说，go无疑是最好的选择，无奈项目中使用oracle数据库较多，只得做备选；java毋庸置疑还是首选，毕竟与项目贴合；python主要是用于做一些快速类的数据分析，以满足业务对报表需要。下面就是用go调用webservice的例子，如果要插入数据库进行保存，返回的数据库连接根据自身情况编写即可。

下面展示一些 内联代码片。

// go and webservice
maple

// An highlighted block
/*
程序目的：查询起飞城市到目的城市的航班信息
程序版本：go1.14
程序编写：枫叶
编写时间：2020年3月15日
 */
package main

import (
	"GoAlgorithm/AirlineSchedule"
	"fmt"
)

const(
	airUrl = "http://ws.webxml.com.cn/webservices/DomesticAirline.asmx?wsdl"
	contentType = "application/soap+xml; charset=utf-8"
)

func main(){
	//定义起飞城市，抵达城市，查询时间
	startCity := "桂林"
	lastCity := "厦门"
	theDate := "2020-3-18"
	userID := ""
	fmt.Println("----------航班查询系统---------")
	AirlineSchedule.ReceiveParam(airUrl,contentType,startCity,lastCity,theDate,userID)
}

/*
程序目的：设置请求报文
程序版本：go1.14
程序编写：枫叶
编写时间：2020年3月15日
 */
package AirlineSchedule

import (
	"fmt"
	"io/ioutil"
	"net/http"
	"strings"
	"time"
)

//对外接口函数
func ReceiveParam(url string,contentType string,startCity string,lastCity string,theDate string,userID string){
	fmt.Println("-------正在查询",startCity,"到",lastCity,"航班信息-------")
	buildRequest(url,contentType,startCity,lastCity,theDate,userID)
}

//soap1.2
func buildRequest(url string,contentType string,startCity string,lastCity string,theDate string,userID string){
	req := `
	
	
	
	`+startCity+`
	`+lastCity+`
	`+theDate+`
	`+userID+``
	res,err := http.Post(url,contentType,strings.NewReader(req))
	if err != nil{
		fmt.Println("http post err:", err)
		return
	}
	defer res.Body.Close()
	if http.StatusOK != res.StatusCode{
		fmt.Println("WebService soap1.2 request fail, status: %s\n", res.StatusCode)
		return
	}
	response,err := ioutil.ReadAll(res.Body)
	if err!=nil{
		fmt.Println("ioutil ReadAll err:", err)
		return
	}
	fmt.Println("----------",startCity,"到",lastCity,"航班信息一览----------")
	currentTime := time.Now()
	resData := string(response)
	fmt.Println(currentTime.Format("2006-01-02 15:04:05"),"   response:")
	fmt.Println(resData)
	startFlag := strings.Index(resData,") //字符串起始位置，int型
	endFlag := strings.Index(resData,"") //字符串结束位置,int型
	//position := strings.Index(resData[comma:],"")
	//fmt.Println(resData[startFlag:endFlag])
	ReceivXml(resData[startFlag:endFlag],startCity,lastCity,theDate) //同目录下函数引用不需要前缀
}

/*
程序目的：解析从webservice服务端返回的xml，同时将记录保存到数据库
程序版本：go1.14
程序编写：枫叶
编写时间：2020年3月15日
*/
package AirlineSchedule

import (
	"GoAlgorithm/UseMariadb"
	"encoding/xml"
	"fmt"
	"time"
	_ "github.com/go-sql-driver/mysql"
)
//_ "github.com/go-sql-driver/mysql" 操作数据库一定要引用该包，否则会报invalid memory address or nil pointer dereference错误
//内部属性都要大写字母开头，属性节点的名称变量名固定为XMLName
//定义航空信息struct
type airlinestime struct{
	Company string `xml:"Company"`
	AirlineCode string `xml:"AirlineCode"`
	StartDrome string `xml:"StartDrome"`
	ArriveDrome string `xml:"ArriveDrome"`
	StartTime string `xml:"StartTime"`
	ArriveTime string `xml:"ArriveTime"`
	Mode string `xml:"Mode"`
	AirlineStop string `xml:"AirlineStop"`
	Cycle string `xml:"Week"`
}
//定义xml的struct
type xmlInfo struct{
	XMLName xml.Name `xml:"Airlines"`//定义要解析内容的最外层标签
	AirlineTime []airlinestime `xml:"AirlinesTime"`
}

func ReceivXml(xmlStr string,startCity string,lastCity string,theDate string) {
	//fmt.Println(xmlStr)
	analyzeXml(xmlStr,startCity,lastCity,theDate)
}

//解析xml
func analyzeXml(xmlStr string,startCity string,lastCity string,theDate string) {
	//fmt.Println("test:",startCity,lastCity,theDate)
	airlineData := xmlInfo{}
	err := xml.Unmarshal([]byte(xmlStr), &airlineData)
	if err != nil {
		fmt.Printf("error: %v", err)
		return
	}
	//fmt.Println(airlineData)
	//fmt.Println("company:",airlineData.AirlineTime[0].Company)
	//建立数据连接
	db,err := UseMariadb.ConDatabase()
	if err != nil{
		fmt.Println("error:%v",err)
		return
	}
	//insertSql,err := db.Prepare("insert into airline set company=?,airlinecode=?,startdrome=?,arrivedrome=?,starttime=?,arrivetime=?,airmode=?,airlinestop=?,cycle=?,querydate=?,startcity=?,arrivecity=?,platform=?")
	insertSql,err := db.Prepare("insert into airline(company,airlinecode,startdrome,arrivedrome,starttime,arrivetime,airmode,airlinestop,cycle,querydate,startcity,arrivecity,platform) values (?,?,?,?,?,?,?,?,?,?,?,?,?)")
	if err != nil {
		fmt.Println("error:%v",err)
	}
	a := 0 //请求报文返回记录
	b := 0 //插入数据库的记录
	currentTime := time.Now()
	fmt.Println(currentTime.Format("2006-01-02 15:04:05"))
	for i:=0;i< len(airlineData.AirlineTime);i++{
		res,_ := insertSql.Exec(airlineData.AirlineTime[i].Company,airlineData.AirlineTime[i].AirlineCode,airlineData.AirlineTime[i].StartDrome,airlineData.AirlineTime[i].ArriveDrome,airlineData.AirlineTime[i].StartTime,airlineData.AirlineTime[i].ArriveTime,airlineData.AirlineTime[i].Mode,airlineData.AirlineTime[i].AirlineStop,airlineData.AirlineTime[i].Cycle,theDate,startCity,lastCity,"Go")
		lastId,_ := res.LastInsertId()
		if lastId == 0{
			b++
		}
		fmt.Println("航空公司:",airlineData.AirlineTime[i].Company)
		fmt.Println("航空编号:",airlineData.AirlineTime[i].AirlineCode)
		fmt.Println("起飞机场:",airlineData.AirlineTime[i].StartDrome)
		fmt.Println("抵达机场:",airlineData.AirlineTime[i].ArriveDrome)
		fmt.Println("起飞时间:",airlineData.AirlineTime[i].StartTime)
		fmt.Println("抵达时间:",airlineData.AirlineTime[i].ArriveTime)
		fmt.Println("机型:",airlineData.AirlineTime[i].Mode)
		fmt.Println("经停:",airlineData.AirlineTime[i].AirlineStop)
		fmt.Println("飞行周期:",airlineData.AirlineTime[i].Cycle)
		fmt.Println("起飞城市:",startCity)
		fmt.Println("抵达城市:",lastCity)
		fmt.Println("查询时间:",theDate)
		fmt.Println("操作平台:Go")
		fmt.Println("---------------------------------------------------")
		a++
	}
	insertSql.Close()
	UseMariadb.CloseDb(db)
	fmt.Println("共返回",a,"条记录，插入数据库",b,"条...")
}